#
# 2024-11-05T07:58:16.342799
#
# make KBUILD_BUILD_USER=KernelCI LD=riscv64-linux-gnu-ld LLVM_IAS=1 ARCH=riscv LLVM=1 CROSS_COMPILE=riscv64-linux-gnu- CC="ccache clang" O=/tmp/kci/linux/build -C/tmp/kci/linux -j4
#
make: Entering directory '/tmp/kci/linux'
make[1]: Entering directory '/tmp/kci/linux/build'
  SYNC    include/config/auto.conf.cmd
  GEN     Makefile
  GEN     Makefile
  WRAP    arch/riscv/include/generated/uapi/asm/errno.h
  WRAP    arch/riscv/include/generated/uapi/asm/fcntl.h
  WRAP    arch/riscv/include/generated/uapi/asm/ioctl.h
  WRAP    arch/riscv/include/generated/uapi/asm/ioctls.h
  WRAP    arch/riscv/include/generated/uapi/asm/ipcbuf.h
  WRAP    arch/riscv/include/generated/uapi/asm/mman.h
  UPD     include/generated/uapi/linux/version.h
  WRAP    arch/riscv/include/generated/uapi/asm/msgbuf.h
  WRAP    arch/riscv/include/generated/uapi/asm/param.h
  WRAP    arch/riscv/include/generated/uapi/asm/poll.h
  WRAP    arch/riscv/include/generated/uapi/asm/posix_types.h
  WRAP    arch/riscv/include/generated/uapi/asm/resource.h
  WRAP    arch/riscv/include/generated/uapi/asm/sembuf.h
  WRAP    arch/riscv/include/generated/uapi/asm/shmbuf.h
  UPD     include/generated/compile.h
  WRAP    arch/riscv/include/generated/uapi/asm/siginfo.h
  HOSTCC  scripts/dtc/dtc.o
  WRAP    arch/riscv/include/generated/uapi/asm/signal.h
  WRAP    arch/riscv/include/generated/uapi/asm/socket.h
  UPD     include/config/kernel.release
  WRAP    arch/riscv/include/generated/uapi/asm/sockios.h
  HOSTCC  scripts/dtc/flattree.o
  WRAP    arch/riscv/include/generated/uapi/asm/stat.h
  WRAP    arch/riscv/include/generated/uapi/asm/statfs.h
  HOSTCC  scripts/dtc/fstree.o
  WRAP    arch/riscv/include/generated/uapi/asm/swab.h
  WRAP    arch/riscv/include/generated/uapi/asm/termbits.h
  WRAP    arch/riscv/include/generated/uapi/asm/termios.h
  WRAP    arch/riscv/include/generated/uapi/asm/types.h
  SYSHDR  arch/riscv/include/generated/uapi/asm/unistd_32.h
  SYSHDR  arch/riscv/include/generated/uapi/asm/unistd_64.h
  HOSTCC  scripts/dtc/data.o
  HOSTCC  scripts/dtc/livetree.o
  HOSTCC  scripts/dtc/treesource.o
  UPD     include/generated/utsrelease.h
  WRAP    arch/riscv/include/generated/asm/early_ioremap.h
  WRAP    arch/riscv/include/generated/asm/flat.h
  WRAP    arch/riscv/include/generated/asm/kvm_para.h
  WRAP    arch/riscv/include/generated/asm/mmzone.h
  WRAP    arch/riscv/include/generated/asm/parport.h
  WRAP    arch/riscv/include/generated/asm/spinlock.h
  WRAP    arch/riscv/include/generated/asm/spinlock_types.h
  WRAP    arch/riscv/include/generated/asm/qrwlock.h
  WRAP    arch/riscv/include/generated/asm/qrwlock_types.h
  WRAP    arch/riscv/include/generated/asm/user.h
  WRAP    arch/riscv/include/generated/asm/vmlinux.lds.h
  WRAP    arch/riscv/include/generated/asm/device.h
  WRAP    arch/riscv/include/generated/asm/div64.h
  WRAP    arch/riscv/include/generated/asm/dma-mapping.h
  WRAP    arch/riscv/include/generated/asm/dma.h
  WRAP    arch/riscv/include/generated/asm/emergency-restart.h
  WRAP    arch/riscv/include/generated/asm/hardirq.h
  HOSTCC  scripts/dtc/srcpos.o
  WRAP    arch/riscv/include/generated/asm/hw_irq.h
  WRAP    arch/riscv/include/generated/asm/irq_regs.h
  WRAP    arch/riscv/include/generated/asm/kmap_size.h
  WRAP    arch/riscv/include/generated/asm/local.h
  WRAP    arch/riscv/include/generated/asm/local64.h
  WRAP    arch/riscv/include/generated/asm/msi.h
  WRAP    arch/riscv/include/generated/asm/percpu.h
  WRAP    arch/riscv/include/generated/asm/preempt.h
  WRAP    arch/riscv/include/generated/asm/runtime-const.h
  WRAP    arch/riscv/include/generated/asm/rwonce.h
  WRAP    arch/riscv/include/generated/asm/serial.h
  WRAP    arch/riscv/include/generated/asm/shmparam.h
  WRAP    arch/riscv/include/generated/asm/softirq_stack.h
  WRAP    arch/riscv/include/generated/asm/trace_clock.h
  WRAP    arch/riscv/include/generated/asm/vga.h
  WRAP    arch/riscv/include/generated/asm/video.h
  SYSTBL  arch/riscv/include/generated/asm/syscall_table_32.h
  SYSTBL  arch/riscv/include/generated/asm/syscall_table_64.h
  HOSTCC  scripts/dtc/checks.o
  HOSTCC  scripts/dtc/util.o
  LEX     scripts/dtc/dtc-lexer.lex.c
  YACC    scripts/dtc/dtc-parser.tab.[ch]
  HOSTCC  scripts/dtc/libfdt/fdt.o
  HOSTCC  scripts/dtc/libfdt/fdt_ro.o
  HOSTCC  scripts/dtc/libfdt/fdt_wip.o
  HOSTCC  scripts/dtc/libfdt/fdt_sw.o
  HOSTCC  scripts/dtc/libfdt/fdt_rw.o
  HOSTCC  scripts/dtc/libfdt/fdt_strerror.o
  HOSTCC  scripts/dtc/libfdt/fdt_empty_tree.o
  HOSTCC  scripts/dtc/libfdt/fdt_addresses.o
  HOSTCC  scripts/dtc/libfdt/fdt_overlay.o
  HOSTCC  scripts/dtc/fdtoverlay.o
  HOSTCC  scripts/dtc/dtc-lexer.lex.o
  HOSTCC  scripts/dtc/dtc-parser.tab.o
  HOSTLD  scripts/dtc/fdtoverlay
  HOSTLD  scripts/dtc/dtc
  DTC     arch/riscv/boot/dts/canaan/canaan_kd233.dtb
  CC      scripts/mod/empty.o
  HOSTCC  scripts/mod/mk_elfconfig
  CC      scripts/mod/devicetable-offsets.s
  DTC     arch/riscv/boot/dts/canaan/k210_generic.dtb
  DTC     arch/riscv/boot/dts/canaan/sipeed_maix_bit.dtb
  DTC     arch/riscv/boot/dts/canaan/sipeed_maix_dock.dtb
  DTC     arch/riscv/boot/dts/canaan/sipeed_maix_go.dtb
  UPD     scripts/mod/devicetable-offsets.h
  DTC     arch/riscv/boot/dts/canaan/sipeed_maixduino.dtb
  MKELF   scripts/mod/elfconfig.h
  HOSTCC  scripts/mod/modpost.o
  HOSTCC  scripts/mod/file2alias.o
  HOSTCC  scripts/mod/sumversion.o
  HOSTCC  scripts/mod/symsearch.o
  HOSTLD  scripts/mod/modpost
  CC      kernel/bounds.s
  CHKSHA1 ../include/linux/atomic/atomic-arch-fallback.h
  CHKSHA1 ../include/linux/atomic/atomic-instrumented.h
  UPD     include/generated/timeconst.h
  CHKSHA1 ../include/linux/atomic/atomic-long.h
  UPD     include/generated/bounds.h
  CC      arch/riscv/kernel/asm-offsets.s
In file included from ../arch/riscv/kernel/asm-offsets.c:10:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/asm-offsets.c:10:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/asm-offsets.c:10:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/asm-offsets.c:10:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/asm-offsets.c:10:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/asm-offsets.c:10:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/asm-offsets.c:10:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  UPD     include/generated/asm-offsets.h
  CALL    ../scripts/checksyscalls.sh
  HOSTCC  usr/gen_init_cpio
  CC      init/main.o
  CC      arch/riscv/kernel/vendor_extensions/andes.o
  CC      kernel/sched/core.o
  AR      arch/riscv/kernel/vendor_extensions/built-in.a
  GEN     usr/initramfs_data.cpio
  COPY    usr/initramfs_inc_data
  AS      usr/initramfs_data.o
  AR      arch/riscv/kernel/probes/built-in.a
  AR      arch/riscv/kernel/tests/built-in.a
  CC      arch/riscv/kernel/pi/cmdline_early.o
In file included from ../init/main.c:21:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../init/main.c:21:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../init/main.c:21:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../init/main.c:21:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../init/main.c:21:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../init/main.c:21:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../init/main.c:21:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AR      usr/built-in.a
In file included from ../kernel/sched/core.c:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h  AR      certs/built-in.a
:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/sched/core.c:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/sched/core.c:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/sched/core.c:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/sched/core.c:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/sched/core.c:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
  CC      mm/filemap.o
In file included from ../kernel/sched/core.c:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      arch/riscv/kernel/pi/fdt_early.o
  CC      arch/riscv/kernel/pi/string.o
7 warnings generated.
  CC      arch/riscv/kernel/pi/ctype.o
  UPD     init/utsversion-tmp.h
  CC      init/do_mounts.o
  CC      arch/riscv/kernel/pi/lib-fdt.o
  CC      arch/riscv/kernel/pi/lib-fdt_ro.o
In file included from ../mm/filemap.c:20:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/filemap.c:20:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/filemap.c:20:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/filemap.c:20:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/filemap.c:20:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/filemap.c:20:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/filemap.c:20:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      arch/riscv/kernel/pi/archrandom_early.o
  OBJCOPY arch/riscv/kernel/pi/cmdline_early.pi.o
  OBJCOPY arch/riscv/kernel/pi/fdt_early.pi.o
  OBJCOPY arch/riscv/kernel/pi/string.pi.o
  OBJCOPY arch/riscv/kernel/pi/ctype.pi.o
  OBJCOPY arch/riscv/kernel/pi/lib-fdt.pi.o
In file included from ../init/do_mounts.c:7:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../init/do_mounts.c:7:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../init/do_mounts.c:7:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../init/do_mounts.c:7:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../init/do_mounts.c:7:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../init/do_mounts.c:7:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../init/do_mounts.c:7:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  OBJCOPY arch/riscv/kernel/pi/lib-fdt_ro.pi.o
  OBJCOPY arch/riscv/kernel/pi/archrandom_early.pi.o
  AR      arch/riscv/kernel/pi/built-in.a
  LDS     arch/riscv/kernel/vmlinux.lds
  AS      arch/riscv/kernel/head.o
7 warnings generated.
  CC      arch/riscv/kernel/soc.o
  CC      kernel/sched/fair.o
7 warnings generated.
  CC      mm/mempool.o
  CC      arch/riscv/kernel/alternative.o
7 warnings generated.
  CC      init/do_mounts_initrd.o
In file included from ../kernel/sched/fair.c:28:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/sched/fair.c:28:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/sched/fair.c:28:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/sched/fair.c:28:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/sched/fair.c:28:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/sched/fair.c:28:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/sched/fair.c:28:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../mm/mempool.c:15:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/mempool.c:15:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/mempool.c:15:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/mempool.c:15:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/mempool.c:15:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/mempool.c:15:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/mempool.c:15:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      arch/riscv/kernel/cpu.o
In file included from ../init/do_mounts_initrd.c:13:
In file included from ../init/do_mounts.h:3:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../init/do_mounts_initrd.c:13:
In file included from ../init/do_mounts.h:3:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../init/do_mounts_initrd.c:13:
In file included from ../init/do_mounts.h:3:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../init/do_mounts_initrd.c:13:
In file included from ../init/do_mounts.h:3:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../init/do_mounts_initrd.c:13:
In file included from ../init/do_mounts.h:3:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../init/do_mounts_initrd.c:13:
In file included from ../init/do_mounts.h:3:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
7 warnings generated.
In file included from ../init/do_mounts_initrd.c:13:
In file included from ../init/do_mounts.h:3:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      mm/oom_kill.o
7 warnings generated.
  CC      init/initramfs.o
  CC      arch/riscv/kernel/cpufeature.o
In file included from ../mm/oom_kill.c:29:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/oom_kill.c:29:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/oom_kill.c:29:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/oom_kill.c:29:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/oom_kill.c:29:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/oom_kill.c:29:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/oom_kill.c:29:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
In file included from ../init/initramfs.c:11:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../init/initramfs.c:11:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../init/initramfs.c:11:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../init/initramfs.c:11:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../init/initramfs.c:11:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../init/initramfs.c:11:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #defin  CC      kernel/sched/build_policy.o
e outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../init/initramfs.c:11:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      mm/fadvise.o
7 warnings generated.
  CC      init/calibrate.o
  AS      arch/riscv/kernel/entry.o
  CC      arch/riscv/kernel/irq.o
In file included from ../kernel/sched/build_policy.c:19:
In file included from ../include/linux/sched/isolation.h:7:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/sched/build_policy.c:19:
In file included from ../include/linux/sched/isolation.h:7:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/sched/build_policy.c:19:
In file included from ../include/linux/sched/isolation.h:7:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/sched/build_policy.c:19:
In file included from ../include/linux/sched/isolation.h:7:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/sched/build_policy.c:19:
In file included from ../include/linux/sched/isolation.h:7:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/sched/build_policy.c:19:
In file included from ../include/linux/sched/isolation.h:7:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/sched/build_policy.c:19:
In file included from ../include/linux/sched/isolation.h:7:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      init/init_task.o
In file included from ../mm/fadvise.c:15:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/fadvise.c:15:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/fadvise.c:15:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/fadvise.c:15:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/fadvise.c:15:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/fadvise.c:15:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/fadvise.c:15:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/irq.c:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/irq.c:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/irq.c:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:In file included from ../init/init_task.c:2:
In file included from ../include/linux/init_task.h:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
14  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: :
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
expanded from macro 'insb'
  In file included from 104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/irq.c:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
../init/init_task.c:2:
In file included from ../include/linux/init_task.h:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:207:
In file included from  warning../include/linux/io.hs: generated14.
:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  118 | #define outsb(ad105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
dr, buffer, In file included from ../init/init_task.c:2:
In file included from ../include/linux/init_task.h:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
106 | #define iIn file included from nsl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
../arch/riscv/kernel/irq.c:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:In file included from ../init/init_task.c:2:
In file included from ../include/linux/init_task.h:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
838 |         outsw(adIn file included from ../init/init_task.c:2:
In file included from ../include/linux/init_task.h:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
dr, buffIn file included from ../init/init_task.c:2:
In file included from ../include/linux/init_task.h:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: er, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.hperforming pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  :119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, c847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  ount)
      |                                            ~~~~~~~~~~ ^
120 | #define outsIn file included from ../arch/riscv/kernel/irq.c:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  l(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../init/init_task.c:2:
In file included from ../include/linux/init_task.h:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MIn file included from ../arch/riscv/kernel/irq.c:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
MIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      mm/maccess.o
7 warnings generated.
  CC      arch/riscv/kernel/process.o
7 warnings generated.
  CC      init/version.o
In file included from ../mm/maccess.c:8:
In file included from ../arch/riscv/include/asm/tlb.h:32:
In file included from ../include/asm-generic/tlb.h:15:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/maccess.c:8:
In file included from ../arch/riscv/include/asm/tlb.h:32:
In file included from ../include/asm-generic/tlb.h:15:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/maccess.c:8:
In file included from ../arch/riscv/include/asm/tlb.h:32:
In file included from ../include/asm-generic/tlb.h:15:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/maccess.c:8:
In file included from ../arch/riscv/include/asm/tlb.h:32:
In file included from ../include/asm-generic/tlb.h:15:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/maccess.c:8:
In file included from ../arch/riscv/include/asm/tlb.h:32:
In file included from ../include/asm-generic/tlb.h:15:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/maccess.c:8:
In file included from ../arch/riscv/include/asm/tlb.h:32:
In file included from ../include/asm-generic/tlb.h:15:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/maccess.c:8:
In file included from ../arch/riscv/include/asm/tlb.h:32:
In file included from ../include/asm-generic/tlb.h:15:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AR      init/built-in.a
  CC      mm/page-writeback.o
7 warnings generated.
  CC      mm/folio-compat.o
In file included from ../arch/riscv/kernel/process.c:16:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/process.c:16:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/process.c:16:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/process.c:16:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/process.c:16:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/process.c:16:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/process.c:16:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      arch/riscv/kernel/ptrace.o
In file included from ../mm/page-writeback.c:21:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/page-writeback.c:21:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/page-writeback.c:21:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/page-writeback.c:21:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/page-writeback.c:21:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/page-writeback.c:21:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/page-writeback.c:21:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../mm/folio-compat.c:7:
In file included from ../include/linux/migrate.h:6:
In file included from ../include/linux/mempolicy.h:15:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/folio-compat.c:7:
In file included from ../include/linux/migrate.h:6:
In file included from ../include/linux/mempolicy.h:15:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/folio-compat.c:7:
In file included from ../include/linux/migrate.h:6:
In file included from ../include/linux/mempolicy.h:15:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/folio-compat.c:7:
In file included from ../include/linux/migrate.h:6:
In file included from ../include/linux/mempolicy.h:15:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/folio-compat.c:7:
In file included from ../include/linux/migrate.h:6:
In file included from ../include/linux/mempolicy.h:15:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/folio-compat.c:7:
In file included from ../include/linux/migrate.h:6:
In file included from ../include/linux/mempolicy.h:15:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/folio-compat.c:7:
In file included from ../include/linux/migrate.h:6:
In file included from ../include/linux/mempolicy.h:15:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      kernel/sched/build_utility.o
7 warnings generated.
  CC      mm/readahead.o
  CC      arch/riscv/kernel/reset.o
7 warnings generated.
In file included from ../kernel/sched/build_utility.c:15:
In file included from ../include/linux/sched/isolation.h:7:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/sched/build_utility.c:15:
In file included from ../include/linux/sched/isolation.h:7:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/sched/build_utility.c:15:
In file included from ../include/linux/sched/isolation.h:7:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (  CC      mm/swap.o
addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/sched/build_utility.c:15:
In file included from ../include/linux/sched/isolation.h:7:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/sched/build_utility.c:15:
In file included from ../include/linux/sched/isolation.h:7:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/sched/build_utility.c:15:
In file included from ../include/linux/sched/isolation.h:7:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
  CC      arch/riscv/kernel/return_address.o
In file included from ../kernel/sched/build_utility.c:15:
In file included from ../include/linux/sched/isolation.h:7:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../mm/readahead.c:116:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/readahead.c:116:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/readahead.c:116:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/readahead.c:116:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/readahead.c:116:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/readahead.c:116:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/readahead.c:116:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/return_address.c:9:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/return_address.c:9:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/return_address.c:9:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/return_address.c:9:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/return_address.c:9:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/return_address.c:9:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/return_address.c:9:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      arch/riscv/kernel/setup.o
In file included from ../mm/swap.c:19:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/swap.c:19:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/swap.c:19:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/swap.c:19:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/swap.c:19:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/swap.c:19:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/swap.c:19:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      mm/truncate.o
7 warnings generated.
  CC      mm/vmscan.o
In file included from ../arch/riscv/kernel/setup.c:21:
In file included from ../include/linux/efi.h:20:
In file included from ../include/linux/rtc.h:17:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/setup.c:21:
In file included from ../include/linux/efi.h:20:
In file included from ../include/linux/rtc.h:17:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/setup.c:21:
In file included from ../include/linux/efi.h:20:
In file included from ../include/linux/rtc.h:17:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/setup.c:21:
In file included from ../include/linux/efi.h:20:
In file included from ../include/linux/rtc.h:17:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/setup.c:21:
In file included from ../include/linux/efi.h:20:
In file included from ../include/linux/rtc.h:17:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/setup.c:21:
In file included from ../include/linux/efi.h:20:
In file included from ../include/linux/rtc.h:17:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/setup.c:21:
In file included from ../include/linux/efi.h:20:
In file included from ../include/linux/rtc.h:17:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  AR      kernel/sched/built-in.a
  CC      kernel/locking/mutex.o
7 warnings generated.
  CC      arch/riscv/kernel/signal.o
In file included from ../mm/truncate.c:12:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/truncate.c:12:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/truncate.c:12:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/truncate.c:12:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/truncate.c:12:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/truncate.c:12:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/truncate.c:12:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../mm/vmscan.c:19:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/vmscan.c:19:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/vmscan.c:19:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/vmscan.c:19:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/vmscan.c:19:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.hIn file included from ../kernel/locking/mutex.c:29:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
:14  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  :
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  104119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (a | ddr), buffer, count)
      |                                            ~~~~~~~~~~ ^
#define insb(addIn file included from ../mm/vmscan.c:19:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  r847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  ,120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
 buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/locking/mutex.c:29:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/locking/mutex.c:29:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/locking/mutex.c:29:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/locking/mutex.c:29:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/locking/mutex.c:29:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/locking/mutex.c:29:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../mm/vmscan.c:19:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      kernel/locking/semaphore.o
In file included from ../arch/riscv/kernel/signal.c:12:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/signal.c:12:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/signal.c:12:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/signal.c:12:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/signal.c:12:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/signal.c:12:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/signal.c:12:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      kernel/locking/rwsem.o
In file included from ../kernel/locking/semaphore.c:34:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/locking/semaphore.c:34:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/locking/semaphore.c:34:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/locking/semaphore.c:34:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(a7 warnings generated.
ddr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/locking/semaphore.c:34:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/locking/semaphore.c:34:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/locking/semaphore.c:34:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      arch/riscv/kernel/syscall_table.o
7 warnings generated.
  CC      mm/shrinker.o
7 warnings generated.
  CC      kernel/locking/percpu-rwsem.o
In file included from ../arch/riscv/kernel/syscall_table.c:8:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/syscall_table.c:8:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/syscall_table.c:8:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/syscall_table.c:8:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/syscall_table.c:8:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/syscall_table.c:8:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/syscall_table.c:8:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      kernel/locking/spinlock.o
7 warnings generated.
  CC      arch/riscv/kernel/sys_riscv.o
In file included from ../mm/shrinker.c:2:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/shrinker.c:2:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/shrinker.c:2:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/shrinker.c:2:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/shrinker.c:2:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/shrinker.c:2:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/shrinker.c:2:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      kernel/locking/osq_lock.o
In file included from ../kernel/locking/spinlock.c:21:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/locking/spinlock.c:21:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/locking/spinlock.c:21:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/locking/spinlock.c:21:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/locking/spinlock.c:21:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/locking/spinlock.c:21:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/locking/spinlock.c:21:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      mm/shmem.o
  CC      kernel/locking/rtmutex_api.o
In file included from ../arch/riscv/kernel/sys_riscv.c:8:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/sys_riscv.c:8:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/sys_riscv.c:8:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/sys_riscv.c:8:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/sys_riscv.c:8:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/sys_riscv.c:8:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/sys_riscv.c:8:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      kernel/locking/qrwlock.o
7 warnings generated.
  CC      arch/riscv/kernel/sys_hwprobe.o
In file included from ../kernel/locking/qrwlock.c:13:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/locking/qrwlock.c:13:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/locking/qrwlock.c:13:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/locking/qrwlock.c:13:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/locking/qrwlock.c:13:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/locking/qrwlock.c:13:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/locking/qrwlock.c:13:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../mm/shmem.c:28:
In file included from ../include/linux/ramfs.h:5:
In file included from ../include/linux/fs_parser.h:11:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/shmem.c:28:
In file included from ../include/linux/ramfs.h:5:
In file included from ../include/linux/fs_parser.h:11:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/shmem.c:28:
In file included from ../include/linux/ramfs.h:5:
In file included from ../include/linux/fs_parser.h:11:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/shmem.c:28:
In file included from ../include/linux/ramfs.h:5:
In file included from ../include/linux/fs_parser.h:11:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/shmem.c:28:
In file included from ../include/linux/ramfs.h:5:
In file included from ../include/linux/fs_parser.h:11:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/shmem.c:28:
In file included from ../include/linux/ramfs.h:5:
In file included from ../include/linux/fs_parser.h:11:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/shmem.c:28:
In file included from ../include/linux/ramfs.h:5:
In file included from ../include/linux/fs_parser.h:11:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      mm/util.o
  CC      mm/mmzone.o
7 warnings generated.
  AR      kernel/locking/built-in.a
  CC      kernel/power/qos.o
In file included from ../arch/riscv/kernel/sys_hwprobe.c:7:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/sys_hwprobe.c:7:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/sys_hwprobe.c:7:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/sys_hwprobe.c:7:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/sys_hwprobe.c:7:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/sys_hwprobe.c:7:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/sys_hwprobe.c:7:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      arch/riscv/kernel/time.o
In file included from ../mm/util.c:12:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/util.c:12:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/util.c:12:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/util.c:12:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/util.c:12:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/util.c:12:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/util.c:12:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      mm/vmstat.o
In file included from ../kernel/power/qos.c:40:
In file included from ../include/trace/events/power.h:12:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/power/qos.c:40:
In file included from ../include/trace/events/power.h:12:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/power/qos.c:40:
In file included from ../include/trace/events/power.h:12:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/power/qos.c:40:
In file included from ../include/trace/events/power.h:12:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/power/qos.c:40:
In file included from ../include/trace/events/power.h:12:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/power/qos.c:40:
In file included from ../include/trace/events/power.h:12:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/power/qos.c:40:
In file included from ../include/trace/events/power.h:12:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      mm/backing-dev.o
7 warnings generated.
  CC      kernel/power/main.o
In file included from ../arch/riscv/kernel/time.c:9:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/time.c:9:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/time.c:9:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/time.c:9:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/time.c:9:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/time.c:9:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/time.c:9:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      arch/riscv/kernel/traps.o
In file included from ../mm/vmstat.c:26:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/vmstat.c:26:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/vmstat.c:26:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/vmstat.c:26:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/vmstat.c:26:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/vmstat.c:26:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/vmstat.c:26:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../mm/backing-dev.c:3:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/backing-dev.c:3:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/backing-dev.c:3:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/backing-dev.c:3:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/backing-dev.c:3:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/backing-dev.c:3:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/backing-dev.c:3:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../kernel/power/main.c:17:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/power/main.c:17:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/power/main.c:17:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/power/main.c:17:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/power/main.c:17:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/power/main.c:17:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/power/main.c:17:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/traps.c:16:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h7 warnings generated.
:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/traps.c:16:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/traps.c:16:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/traps.c:16:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/traps.c:16:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/traps.c:16:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/traps.c:16:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      kernel/power/process.o
7 warnings generated.
  CC      mm/mm_init.o
7 warnings generated.
  CC      mm/percpu.o
7 warnings generated.
  CC      arch/riscv/kernel/riscv_ksyms.o
In file included from ../kernel/power/process.c:9:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/power/process.c:9:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/power/process.c:9:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/power/process.c:9:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/power/process.c:9:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/power/process.c:9:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/power/process.c:9:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../mm/mm_init.c:20:
In file included from ../include/linux/nmi.h:9:
In file included from ../arch/riscv/include/asm/irq.h:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/mm_init.c:20:
In file included from ../include/linux/nmi.h:9:
In file included from ../arch/riscv/include/asm/irq.h:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/mm_init.c:20:
In file included from ../include/linux/nmi.h:9:
In file included from ../arch/riscv/include/asm/irq.h:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/mm_init.c:20:
In file included from ../include/linux/nmi.h:9:
In file included from ../arch/riscv/include/asm/irq.h:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/mm_init.c:20:
In file included from ../include/linux/nmi.h:9:
In file included from ../arch/riscv/include/asm/irq.h:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/mm_init.c:20:
In file included from ../include/linux/nmi.h:9:
In file included from ../arch/riscv/include/asm/irq.h:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/mm_init.c:20:
In file included from ../include/linux/nmi.h:9:
In file included from ../arch/riscv/include/asm/irq.h:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      arch/riscv/kernel/stacktrace.o
7 warnings generated.
  CC      kernel/power/suspend.o
In file included from ../mm/percpu.c:89:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/percpu.c:89:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/percpu.c:89:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/percpu.c:89:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/percpu.c:89:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/percpu.c:89:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/percpu.c:89:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  AR      fs/notify/dnotify/built-in.a
  AR      fs/notify/inotify/built-in.a
In file included from ../arch/riscv/kernel/stacktrace.c:13:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/stacktrace.c:13:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/stacktrace.c:13:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/stacktrace.c:13:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/stacktrace.c:13:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/stacktrace.c:13:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
  AR      fs/notify/fanotify/built-in.a
In file included from ../arch/riscv/kernel/stacktrace.c:13:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AR      fs/notify/built-in.a
7 warnings generated.
  AR      fs/iomap/built-in.a
  CC      arch/riscv/kernel/cacheinfo.o
  AR      fs/quota/built-in.a
In file included from ../kernel/power/suspend.c:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/power/suspend.c:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/power/suspend.c:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/power/suspend.c:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/power/suspend.c:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:  CC      fs/proc/nommu.o
55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/power/suspend.c:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/power/suspend.c:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      mm/slab_common.o
7 warnings generated.
  AR      kernel/power/built-in.a
  CC      kernel/printk/printk.o
  CC      arch/riscv/kernel/patch.o
In file included from ../fs/proc/nommu.c:18:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/nommu.c:18:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/nommu.c:18:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/nommu.c:18:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/nommu.c:18:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/nommu.c:18:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/nommu.c:18:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
In file included from ../mm/slab_common.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/slab_common.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/slab_common.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/slab_common.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/slab_common.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/slab_common.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
  CC      fs/proc/task_nommu.o
In file included from ../mm/slab_common.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../kernel/printk/printk.c:29:
In file included from ../include/linux/nmi.h:9:
In file included from ../arch/riscv/include/asm/irq.h:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/printk/printk.c:29:
In file included from ../include/linux/nmi.h:9:
In file included from ../arch/riscv/include/asm/irq.h:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/printk/printk.c:29:
In file included from ../include/linux/nmi.h:9:
In file included from ../arch/riscv/include/asm/irq.h:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/printk/printk.c:29:
In file included from ../include/linux/nmi.h:9:
In file included from ../arch/riscv/include/asm/irq.h:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/printk/printk.c:29:
In file included from ../include/linux/nmi.h:9:
In file included from ../arch/riscv/include/asm/irq.h:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/printk/printk.c:29:
In file included from ../include/linux/nmi.h:9:
In file included from ../arch/riscv/include/asm/irq.h:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/printk/printk.c:29:
In file included from ../include/linux/nmi.h:9:
In file included from ../arch/riscv/include/asm/irq.h:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      mm/compaction.o
  CC      arch/riscv/kernel/vendor_extensions.o
  CC      arch/riscv/kernel/traps_misaligned.o
  CC      fs/proc/inode.o
In file included from ../mm/compaction.c:12:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/compaction.c:12:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/compaction.c:12:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/compaction.c:12:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/compaction.c:12:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/compaction.c:12:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/compaction.c:12:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      kernel/printk/printk_safe.o
7 warnings generated.
  CC      mm/show_mem.o
In file included from ../arch/riscv/kernel/traps_misaligned.c:9:
In file included from ../include/linux/perf_event.h:52:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/traps_misaligned.c:9:
In file included from ../include/linux/perf_event.h:52:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/traps_misaligned.c:9:
In file included from ../include/linux/perf_event.h:52:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/traps_misaligned.c:9:
In file included from ../include/linux/perf_event.h:52:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/traps_misaligned.c:9:
In file included from ../include/linux/perf_event.h:52:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/traps_misaligned.c:9:
In file included from ../include/linux/perf_event.h:52:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/traps_misaligned.c:9:
In file included from ../include/linux/perf_event.h:52:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      fs/proc/root.o
In file included from ../kernel/printk/printk_safe.c:11:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/printk/printk_safe.c:11:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/printk/printk_safe.c:11:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/printk/printk_safe.c:11:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/printk/printk_safe.c:11:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
7 warnings generated.
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/printk/printk_safe.c:11:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/printk/printk_safe.c:11:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      arch/riscv/kernel/unaligned_access_speed.o
In file included from ../mm/show_mem.c:8:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/show_mem.c:8:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/show_mem.c:8:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/show_mem.c:8:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/show_mem.c:8:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/show_mem.c:8:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/show_mem.c:8:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      kernel/printk/nbcon.o
7 warnings generated.
  CC      mm/interval_tree.o
In file included from ../fs/proc/root.c:19:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/root.c:19:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/root.c:19:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/root.c:19:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/root.c:19:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/root.c:19:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/root.c:19:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AS      arch/riscv/kernel/copy-unaligned.o
7 warnings generated.
  CC      fs/proc/base.o
  AS      arch/riscv/kernel/vec-copy-unaligned.o
  AS      arch/riscv/kernel/fpu.o
  CC      arch/riscv/kernel/kernel_mode_fpu.o
  CC      kernel/printk/printk_ringbuffer.o
In file included from ../mm/interval_tree.c:10:
In file included from ../include/linux/rmap.h:12:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/interval_tree.c:10:
In file included from ../include/linux/rmap.h:12:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/interval_tree.c:10:
In file included from ../include/linux/rmap.h:12:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/interval_tree.c:10:
In file included from ../include/linux/rmap.h:12:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/interval_tree.c:10:
In file included from ../include/linux/rmap.h:12:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/interval_tree.c:10:
In file included from ../include/linux/rmap.h:12:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/interval_tree.c:10:
In file included from ../include/linux/rmap.h:12:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      arch/riscv/kernel/vector.o
In file included from ../fs/proc/base.c:67:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/base.c:67:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/base.c:67:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/base.c:67:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/base.c:67:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/base.c:67:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/base.c:67:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      mm/list_lru.o
  CC      kernel/printk/sysctl.o
  CC      arch/riscv/kernel/kernel_mode_vector.o
7 warnings generated.
In file included from ../mm/list_lru.c:14:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/list_lru.c:14:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/list_lru.c:14:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/list_lru.c:14:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count)   CC      fs/proc/generic.o
__outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/list_lru.c:14:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/list_lru.c:14:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
  AR      kernel/printk/built-in.a
In file included from ../mm/list_lru.c:14:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      kernel/irq/irqdesc.o
  CC      arch/riscv/kernel/smpboot.o
7 warnings generated.
  CC      mm/workingset.o
In file included from ../kernel/irq/irqdesc.c:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/irqdesc.c:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/irqdesc.c:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/irqdesc.c:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/irqdesc.c:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/irqdesc.c:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/irqdesc.c:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      fs/proc/array.o
In file included from ../arch/riscv/kernel/smpboot.c:18:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/smpboot.c:18:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/smpboot.c:18:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/smpboot.c:18:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/smpboot.c:18:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addrIn file included from ), buffer, count)
      |                                            ~~~~~~~~~~ ^
../mm/workingset.c:8:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26In file included from ../arch/riscv/kernel/smpboot.c:18:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  :
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/workingset.c:8:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/workingset.c:8:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/workingset.c:8:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/workingset.c:8:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/workingset.c:8:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/smpboot.c:18:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../mm/workingset.c:8:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      kernel/irq/handle.o
7 warnings generated.
  CC      arch/riscv/kernel/smp.o
In file included from ../fs/proc/array.c:61:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/array.c:61:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/array.c:61:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/array.c:61:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/array.c:61:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/array.c:61:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/array.c:61:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      mm/debug.o
In file included from ../kernel/irq/handle.c:11:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/handle.c:11:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/handle.c:11:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/handle.c:11:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/handle.c:11:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/handle.c:11:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/handle.c:11:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/smp.c:12:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/smp.c:12:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/smp.c:12:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/smp.c:12:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/smp.c:12:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/smp.c:12:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/smp.c:12:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
7 warnings generated.
  CC      fs/proc/fd.o
  CC      kernel/irq/manage.o
7 warnings generated.
  CC      arch/riscv/kernel/cpu_ops.o
In file included from ../mm/debug.c:11:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/debug.c:11:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/debug.c:11:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/debug.c:11:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/debug.c:11:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/debug.c:11:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/debug.c:11:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../kernel/irq/manage.c:11:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/manage.c:11:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/manage.c:11:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/manage.c:11:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/manage.c:11:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/manage.c:11:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/manage.c:11:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      mm/gup.o
In file included from ../fs/proc/fd.c:11:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/fd.c:11:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/fd.c:11:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/fd.c:11:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/fd.c:11:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/fd.c:11:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/fd.c:11:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      arch/riscv/kernel/cpu_ops_spinwait.o
7 warnings generated.
  CC      fs/proc/proc_tty.o
In file included from ../mm/gup.c:10:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/gup.c:10:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/gup.c:10:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/gup.c:10:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/gup.c:10:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/gup.c:10:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/gup.c:10:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      kernel/irq/spurious.o
  AS      arch/riscv/kernel/suspend_entry.o
  CC      arch/riscv/kernel/suspend.o
7 warnings generated.
  CC      mm/mmap_lock.o
In file included from ../kernel/irq/spurious.c:9:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/spurious.c:9:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/spurious.c:9:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/spurious.c:9:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/spurious.c:9:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/spurious.c:9:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/spurious.c:9:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/suspend.c:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/suspend.c:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
  CC      fs/proc/cmdline.o
In file included from ../arch/riscv/kernel/suspend.c:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/suspend.c:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/suspend.c:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/suspend.c:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/suspend.c:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      kernel/irq/resend.o
7 warnings generated.
  CC      arch/riscv/kernel/perf_regs.o
In file included from ../mm/mmap_lock.c:6:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/mmap_lock.c:6:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/mmap_lock.c:6:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/mmap_lock.c:6:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/mmap_lock.c:6:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/mmap_lock.c:6:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/mmap_lock.c:6:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
In file included from ../kernel/irq/resend.c:15:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/resend.c:15:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/resend.c:15:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #  CC      mm/nommu.o
define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/resend.c:15:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/resend.c:15:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/resend.c:15:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/resend.c:15:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      fs/proc/consoles.o
7 warnings generated.
  CC      kernel/irq/chip.o
In file included from ../arch/riscv/kernel/perf_regs.c:6:
In file included from ../include/linux/perf_event.h:52:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/perf_regs.c:6:
In file included from ../include/linux/perf_event.h:52:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/perf_regs.c:6:
In file included from ../include/linux/perf_event.h:52:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/perf_regs.c:6:
In file included from ../include/linux/perf_event.h:52:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/perf_regs.c:6:
In file included from ../include/linux/perf_event.h:52:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/perf_regs.c:6:
In file included from ../include/linux/perf_event.h:52:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/perf_regs.c:6:
In file included from ../include/linux/perf_event.h:52:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
In file included from ../mm/nommu.c:23:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/nommu.c:23:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/nommu.c:23:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/nommu.c:23:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/nommu.c:23:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/nommu.c:23:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/nommu.c:23:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      arch/riscv/kernel/cpu-hotplug.o
  CC      fs/proc/cpuinfo.o
In file included from ../kernel/irq/chip.c:11:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/chip.c:11:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/chip.c:11:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/chip.c:11:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/chip.c:11:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/chip.c:11:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/chip.c:11:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      mm/page_alloc.o
In file included from ../arch/riscv/kernel/cpu-hotplug.c:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/cpu-hotplug.c:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/cpu-hotplug.c:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/cpu-hotplug.c:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/cpu-hotplug.c:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/cpu-hotplug.c:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/cpu-hotplug.c:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      fs/proc/devices.o
  CC      kernel/irq/dummychip.o
7 warnings generated.
  AR      arch/riscv/kernel/built-in.a
  CC      arch/riscv/mm/init.o
In file included from ../kernel/irq/dummychip.c:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/dummychip.c:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/dummychip.c:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/dummychip.c:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/dummychip.c:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/dummychip.c:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/dummychip.c:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../mm/page_alloc.c:20:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/page_alloc.c:20:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/page_alloc.c:20:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/page_alloc.c:20:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/page_alloc.c:20:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/page_alloc.c:20:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/page_alloc.c:20:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../fs/proc/devices.c:6:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/devices.c:6:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/devices.c:6:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/devices.c:6:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/devices.c:6:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/devices.c:6:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/devices.c:6:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../arch/riscv/mm/init.c:13:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/mm/init.c:13:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/mm/init.c:13:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/mm/init.c:13:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/mm/init.c:13:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/mm/init.c:13:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
7 warnings generated.
In file included from ../arch/riscv/mm/init.c:13:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      kernel/irq/devres.o
7 warnings generated.
  CC      fs/proc/interrupts.o
7 warnings generated.
  CC      arch/riscv/mm/cacheflush.o
In file included from ../fs/proc/interrupts.c:4:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/interrupts.c:4:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/interrupts.c:4:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/interrupts.c:4:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/interrupts.c:4:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/interrupts.c:4:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/interrupts.c:4:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../kernel/irq/devres.c:3:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/devres.c:3:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/devres.c:3:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/devres.c:3:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/devres.c:3:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/devres.c:3:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/devres.c:3:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      fs/proc/loadavg.o
7 warnings generated.
  CC      kernel/irq/irqdomain.o
  CC      arch/riscv/mm/context.o
7 warnings generated.
  CC      mm/init-mm.o
  CC      fs/proc/meminfo.o
In file included from ../kernel/irq/irqdomain.c:7:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/irqdomain.c:7:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/irqdomain.c:7:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/irqdomain.c:7:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/irqdomain.c:7:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/irqdomain.c:7:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/irqdomain.c:7:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      arch/riscv/mm/pmem.o
In file included from ../mm/init-mm.c:13:
In file included from ../include/linux/iommu.h:10:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/init-mm.c:13:
In file included from ../include/linux/iommu.h:10:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/init-mm.c:13:
In file included from ../include/linux/iommu.h:10:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/init-mm.c:13:
In file included from ../include/linux/iommu.h:10:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/init-mm.c:13:
In file included from ../include/linux/iommu.h:10:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/init-mm.c:13:
In file included from ../include/linux/iommu.h:10:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/init-mm.c:13:
In file included from ../include/linux/iommu.h:10:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      kernel/irq/proc.o
7 warnings generated.
  CC      mm/memblock.o
In file included from ../fs/proc/meminfo.c:6:
In file included from ../include/linux/hugetlb.h:10:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/meminfo.c:6:
In file included from ../include/linux/hugetlb.h:10:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/meminfo.c:6:
In file included from ../include/linux/hugetlb.h:10:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/meminfo.c:6:
In file included from ../include/linux/hugetlb.h:10:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/meminfo.c:6:
In file included from ../include/linux/hugetlb.h:10:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/meminfo.c:6:
In file included from ../include/linux/hugetlb.h:10:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/meminfo.c:6:
In file included from ../include/linux/hugetlb.h:10:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../arch/riscv/mm/pmem.c:7:
In file included from ../include/linux/libnvdimm.h:14:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/mm/pmem.c:7:
In file included from ../include/linux/libnvdimm.h:14:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/mm/pmem.c:7:
In file included from ../include/linux/libnvdimm.h:14:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/mm/pmem.c:7:
In file included from ../include/linux/libnvdimm.h:14:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/mm/pmem.c:7:
In file included from ../include/linux/libnvdimm.h:14:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/mm/pmem.c:7:
In file included from ../include/linux/libnvdimm.h:14:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/mm/pmem.c:7:
In file included from ../include/linux/libnvdimm.h:14:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      fs/proc/stat.o
7 warnings generated.
In file included from ../kernel/irq/proc.c:8:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/proc.c:8:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/proc.c:8:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/proc.c:8:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
  AR      arch/riscv/mm/built-in.a
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/proc.c:8:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/proc.c:8:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/proc.c:8:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AR      arch/riscv/net/built-in.a
  WRAP    arch/riscv/boot/dts/canaan/k210_generic.dtb.S
  AS      arch/riscv/boot/dts/canaan/k210_generic.dtb.o
  AR      arch/riscv/boot/dts/built-in.a
  AR      arch/riscv/errata/built-in.a
  CC      arch/riscv/purgatory/purgatory.o
In file included from ../mm/memblock.c:21:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/memblock.c:21:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/memblock.c:21:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/memblock.c:21:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/memblock.c:21:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/memblock.c:21:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/memblock.c:21:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      arch/riscv/purgatory/sha256.o
7 warnings generated.
  CC      kernel/irq/cpuhotplug.o
In file included from ../fs/proc/stat.c:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/stat.c:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/stat.c:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/stat.c:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/stat.c:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/stat.c:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/stat.c:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
7 warnings generated.
  CC      fs/proc/uptime.o
  CC      mm/slub.o
In file included from ../kernel/irq/cpuhotplug.c:12:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/cpuhotplug.c:12:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/cpuhotplug.c:12:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/cpuhotplug.c:12:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/cpuhotplug.c:12:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/cpuhotplug.c:12:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/cpuhotplug.c:12:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AS      arch/riscv/purgatory/entry.o
  CC      arch/riscv/purgatory/string.o
7 warnings generated.
  CC      kernel/irq/pm.o
In file included from ../fs/proc/uptime.c:9:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/uptime.c:9:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/uptime.c:9:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/uptime.c:9:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/uptime.c:9:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/uptime.c:9:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/uptime.c:9:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../mm/slub.c:14:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/slub.c:14:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/slub.c:14:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/slub.c:14:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/slub.c:14:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/slub.c:14:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/slub.c:14:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      arch/riscv/purgatory/ctype.o
  AS      arch/riscv/purgatory/memcpy.o
7 warnings generated.
  CC      fs/proc/util.o
  AS      arch/riscv/purgatory/memset.o
  AS      arch/riscv/purgatory/strcmp.o
In file included from ../kernel/irq/pm.c:8:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/pm.c:8:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/pm.c:8:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/pm.c:8:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/pm.c:8:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/pm.c:8:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/pm.c:8:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AS      arch/riscv/purgatory/strlen.o
  AS      arch/riscv/purgatory/strncmp.o
  LD      arch/riscv/purgatory/purgatory.ro
  LD      arch/riscv/purgatory/purgatory.chk
  AS      arch/riscv/purgatory/kexec-purgatory.o
  AR      arch/riscv/purgatory/built-in.a
  AR      arch/riscv/built-in.a
  AR      ipc/built-in.a
7 warnings generated.
  CC      security/commoncap.o
  CC      mm/dmapool.o
7 warnings generated.
  CC      kernel/irq/msi.o
  CC      fs/proc/version.o
In file included from ../mm/dmapool.c:23:
In file included from ../include/linux/dma-mapping.h:8:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/dmapool.c:23:
In file included from ../include/linux/dma-mapping.h:8:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/dmapool.c:23:
In file included from ../include/linux/dma-mapping.h:8:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/dmapool.c:23:
In file included from ../include/linux/dma-mapping.h:8:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: In file included from ../security/commoncap.c:9:
In file included from ../include/linux/lsm_hooks.h:29:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
note:   804expanded from macro 'outsb' | 
        insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
  118 | #define In file included from ../security/commoncap.c:9:
In file included from ../include/linux/lsm_hooks.h:29:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
outsb(addrIn file included from ../security/commoncap.c:9:
In file included from ../include/linux/lsm_hooks.h:29:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  ,106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
 buffer, cIn file included from ../security/commoncap.c:9:
In file included from ../include/linux/lsm_hooks.h:29:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
ount) __outsbIn file included from ../security/commoncap.c:9:
In file included from ../include/linux/lsm_hooks.h:29:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
(PCI_IOBAIn file included from S../security/commoncap.cE:9:
In file included from ../include/linux/lsm_hooks.h:29:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
   847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  +120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
 (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/dmapool.c:23:
In file included from ../include/linux/dma-mapping.h:8:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/dmapool.c:23:
In file included from ../include/linux/dma-mapping.h:8:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../security/commoncap.c:9:
In file included from ../include/linux/lsm_hooks.h:29:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../mm/dmapool.c:23:
In file included from ../include/linux/dma-mapping.h:8:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../kernel/irq/msi.c:12:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/msi.c:12:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/msi.c:12:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/msi.c:12:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/msi.c:12:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/msi.c:12:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/msi.c:12:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      fs/proc/softirqs.o
  CC      mm/early_ioremap.o
7 warnings generated.
  AR      security/built-in.a
7 warnings generated.
  CC      kernel/irq/ipi.o
In file included from ../fs/proc/softirqs.c:3:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/softirqs.c:3:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/softirqs.c:3:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/softirqs.c:3:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/softirqs.c:3:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/softirqs.c:3:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/softirqs.c:3:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../mm/early_ioremap.c:13:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/early_ioremap.c:13:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/early_ioremap.c:13:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/early_ioremap.c:13:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/early_ioremap.c:13:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/early_ioremap.c:13:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/early_ioremap.c:13:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AR      crypto/built-in.a
  CC      lib/math/div64.o
  CC      lib/math/gcd.o
  CC      lib/math/lcm.o
7 warnings generated.
  CC      fs/proc/namespaces.o
  CC      lib/math/int_log.o
In file included from ../kernel/irq/ipi.c:12:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/ipi.c:12:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/ipi.c:12:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/ipi.c:12:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/ipi.c:12:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/ipi.c:12:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/ipi.c:12:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      lib/math/int_pow.o
  AR      mm/built-in.a
  CC      lib/math/int_sqrt.o
  CC      fs/proc/self.o
  CC      lib/math/reciprocal_div.o
  CC      lib/math/rational.o
7 warnings generated.
  CC      kernel/irq/ipi-mux.o
In file included from ../fs/proc/namespaces.c:8:
In file included from ../include/net/net_namespace.h:43:
In file included from ../include/linux/skbuff.h:17:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/namespaces.c:8:
In file included from ../include/net/net_namespace.h:43:
In file included from ../include/linux/skbuff.h:17:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/namespaces.c:8:
In file included from ../include/net/net_namespace.h:43:
In file included from ../include/linux/skbuff.h:17:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/namespaces.c:8:
In file included from ../include/net/net_namespace.h:43:
In file included from ../include/linux/skbuff.h:17:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/namespaces.c:8:
In file included from ../include/net/net_namespace.h:43:
In file included from ../include/linux/skbuff.h:17:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/namespaces.c:8:
In file included from ../include/net/net_namespace.h:43:
In file included from ../include/linux/skbuff.h:17:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/namespaces.c:8:
In file included from ../include/net/net_namespace.h:43:
In file included from ../include/linux/skbuff.h:17:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      lib/crypto/chacha.o
  CC      fs/proc/thread_self.o
  AR      lib/math/built-in.a
  CC      lib/crypto/blake2s.o
  CC      lib/argv_split.o
In file included from ../kernel/irq/ipi-mux.c:12:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/ipi-mux.c:12:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/ipi-mux.c:12:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/ipi-mux.c:12:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/ipi-mux.c:12:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/ipi-mux.c:12:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/ipi-mux.c:12:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      kernel/irq/affinity.o
  CC      lib/bug.o
  CC      fs/proc/proc_sysctl.o
  CC      lib/crypto/blake2s-generic.o
In file included from ../kernel/irq/affinity.c:6:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/affinity.c:6:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/affinity.c:6:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/affinity.c:6:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/affinity.c:6:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/affinity.c:6:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/affinity.c:6:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      kernel/irq/matrix.o
In file included from ../lib/bug.c:49:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/bug.c:49:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/bug.c:49:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/bug.c:49:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/bug.c:49:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/bug.c:49:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/bug.c:49:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      lib/crypto/blake2s-selftest.o
7 warnings generated.
  CC      lib/buildid.o
  AR      lib/crypto/built-in.a
  CC      lib/cmdline.o
In file included from ../fs/proc/proc_sysctl.c:10:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/proc_sysctl.c:10:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/proc_sysctl.c:10:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/proc_sysctl.c:10:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/proc_sysctl.c:10:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/proc_sysctl.c:10:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/proc_sysctl.c:10:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      lib/cpumask.o
In file included from ../kernel/irq/matrix.c:9:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/matrix.c:9:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/matrix.c:9:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/matrix.c:9:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/matrix.c:9:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/matrix.c:9:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/matrix.c:9:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  AR      kernel/irq/built-in.a
In file included from ../lib/buildid.c:7:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/buildid.c:7:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/buildid.c:7:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/buildid.c:7:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/buildid.c:7:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/buildid.c:7:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/buildid.c:7:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MM  CC      kernel/rcu/update.o
IO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
7 warnings generated.
  CC      fs/proc/kmsg.o
  CC      kernel/rcu/sync.o
  CC      lib/ctype.o
  CC      lib/dec_and_lock.o
In file included from ../kernel/rcu/update.c:25:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/rcu/update.c:25:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/rcu/update.c:25:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/rcu/update.c:25:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/rcu/update.c:25:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/rcu/update.c:25:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/rcu/update.c:25:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      kernel/rcu/srcutree.o
  CC      lib/decompress.o
  CC      lib/dump_stack.o
In file included from ../fs/proc/kmsg.c:18:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/kmsg.c:18:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/kmsg.c:18:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/kmsg.c:18:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/kmsg.c:18:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/kmsg.c:18:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/kmsg.c:18:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  AR      fs/proc/built-in.a
7 warnings generated.
  CC      fs/kernfs/mount.o
  CC      kernel/rcu/tree.o
In file included from ../lib/dump_stack.c:14:
In file included from ../include/linux/kexec.h:20:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/dump_stack.c:14:
In file included from ../include/linux/kexec.h:20:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/dump_stack.c:14:
In file included from ../include/linux/kexec.h:20:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/dump_stack.c:14:
In file included from ../include/linux/kexec.h:20:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/dump_stack.c:14:
In file included from ../include/linux/kexec.h:20:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/dump_stack.c:14:
In file included from ../include/linux/kexec.h:20:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/dump_stack.c:14:
In file included from ../include/linux/kexec.h:20:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../kernel/rcu/tree.c:26:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/rcu/tree.c:26:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/rcu/tree.c:26:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/rcu/tree.c:26:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/rcu/tree.c:26:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/rcu/tree.c:26:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/rcu/tree.c:26:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      lib/earlycpio.o
  CC      lib/extable.o
In file included from ../fs/kernfs/mount.c:15:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/kernfs/mount.c:15:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/kernfs/mount.c:15:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/kernfs/mount.c:15:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/kernfs/mount.c:15:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/kernfs/mount.c:15:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/kernfs/mount.c:15:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      kernel/rcu/rcu_segcblist.o
7 warnings generated.
  CC      fs/kernfs/inode.o
  CC      lib/fdt.o
  CC      lib/fdt_addresses.o
In file included from ../kernel/rcu/rcu_segcblist.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/rcu/rcu_segcblist.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/rcu/rcu_segcblist.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/rcu/rcu_segcblist.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/rcu/rcu_segcblist.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/rcu/rcu_segcblist.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/rcu/rcu_segcblist.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      lib/fdt_empty_tree.o
  CC      lib/fdt_ro.o
7 warnings generated.
  CC      lib/fdt_rw.o
In file included from ../fs/kernfs/inode.c:10:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/kernfs/inode.c:10:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/kernfs/inode.c:10:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/kernfs/inode.c:10:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/kernfs/inode.c:10:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/kernfs/inode.c:10:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/kernfs/inode.c:10:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      lib/fdt_strerror.o
  CC      lib/fdt_sw.o
  CC      fs/sysfs/file.o
7 warnings generated.
  CC      fs/kernfs/dir.o
  CC      lib/fdt_wip.o
  CC      lib/flex_proportions.o
  CC      lib/idr.o
7 warnings generated.
  AR      kernel/rcu/built-in.a
  CC      fs/sysfs/dir.o
  AR      kernel/livepatch/built-in.a
In file included from ../fs/kernfs/dir.c:15:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/kernfs/dir.c:15:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/kernfs/dir.c:15:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/kernfs/dir.c:15:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/kernfs/dir.c:15:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/kernfs/dir.c:15:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/kernfs/dir.c:15:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      kernel/dma/mapping.o
  CC      lib/iomem_copy.o
7 warnings generated.
  CC      fs/kernfs/file.o
  CC      fs/sysfs/symlink.o
In file included from ../lib/iomem_copy.c:8:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/iomem_copy.c:8:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/iomem_copy.c:8:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/iomem_copy.c:8:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/iomem_copy.c:8:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/iomem_copy.c:8:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/iomem_copy.c:8:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
In file included from ../kernel/dma/mapping.c:10:
In file included from ../include/linux/dma-map-ops.h:9:
In file included from ../include/linux/dma-mapping.h:8:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/dma/mapping.c:10:
In file included from ../include/linux/dma-map-ops.h:9:
In file included from ../include/linux/dma-mapping.h:8:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/dma/mapping.c:10:
In file included from ../include/linux/dma-map-ops.h:9:
In file included from ../include/linux/dma-mapping.h:8:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/dma/mapping.c:10:
In file included from ../include/linux/dma-map-ops.h:9:
In file included from ../include/linux/dma-mapping.h:8:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/dma/mapping.c:10:
In file included from ../include/linux/dma-map-ops.h:9:
In file included from ../include/linux/dma-mapping.h:8:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr,   CC      lib/irq_regs.o
buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/dma/mapping.c:10:
In file included from ../include/linux/dma-map-ops.h:9:
In file included from ../include/linux/dma-mapping.h:8:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/dma/mapping.c:10:
In file included from ../include/linux/dma-map-ops.h:9:
In file included from ../include/linux/dma-mapping.h:8:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      kernel/dma/direct.o
  CC      lib/is_single_threaded.o
In file included from ../fs/kernfs/file.c:14:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/kernfs/file.c:14:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/kernfs/file.c:14:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/kernfs/file.c:14:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/kernfs/file.c:14:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/kernfs/file.c:14:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/kernfs/file.c:14:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../fs/sysfs/symlink.c:16:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/sysfs/symlink.c:16:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/sysfs/symlink.c:16:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/sysfs/symlink.c:16:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/sysfs/symlink.c:16:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/sysfs/symlink.c:16:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/sysfs/symlink.c:16:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      fs/sysfs/mount.o
7 warnings generated.
  CC      fs/kernfs/symlink.o
  CC      lib/klist.o
In file included from ../kernel/dma/direct.c:10:
In file included from ../include/linux/dma-map-ops.h:9:
In file included from ../include/linux/dma-mapping.h:8:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/dma/direct.c:10:
In file included from ../include/linux/dma-map-ops.h:9:
In file included from ../include/linux/dma-mapping.h:8:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/dma/direct.c:10:
In file included from ../include/linux/dma-map-ops.h:9:
In file included from ../include/linux/dma-mapping.h:8:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/dma/direct.c:10:
In file included from ../include/linux/dma-map-ops.h:9:
In file included from ../include/linux/dma-mapping.h:8:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/dma/direct.c:10:
In file included from ../include/linux/dma-map-ops.h:9:
In file included from ../include/linux/dma-mapping.h:8:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/dma/direct.c:10:
In file included from ../include/linux/dma-map-ops.h:9:
In file included from ../include/linux/dma-mapping.h:8:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/dma/direct.c:10:
In file included from ../include/linux/dma-map-ops.h:9:
In file included from ../include/linux/dma-mapping.h:8:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      lib/kobject.o
7 warnings generated.
  CC      kernel/dma/coherent.o
In file included from ../fs/sysfs/mount.c:18:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/sysfs/mount.c:18:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/sysfs/mount.c:18:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/sysfs/mount.c:18:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/sysfs/mount.c:18:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/sysfs/mount.c:18:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/sysfs/mount.c:18:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../fs/kernfs/symlink.c:14:
In file included from ../fs/kernfs/kernfs-internal.h:20:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/kernfs/symlink.c:14:
In file included from ../fs/kernfs/kernfs-internal.h:20:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/kernfs/symlink.c:14:
In file included from ../fs/kernfs/kernfs-internal.h:20:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/kernfs/symlink.c:14:
In file included from ../fs/kernfs/kernfs-internal.h:20:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/kernfs/symlink.c:14:
In file included from ../fs/kernfs/kernfs-internal.h:20:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/kernfs/symlink.c:14:
In file included from ../fs/kernfs/kernfs-internal.h:20:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/kernfs/symlink.c:14:
In file included from ../fs/kernfs/kernfs-internal.h:20:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
7 warnings generated.
  CC      fs/sysfs/group.o
  AR      fs/kernfs/built-in.a
In file included from ../kernel/dma/coherent.c:6:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/dma/coherent.c:6:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/dma/coherent.c:6:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/dma/coherent.c:6:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/dma/coherent.c:6:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/dma/coherent.c:6:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
  AR      fs/devpts/built-in.a
In file included from ../kernel/dma/coherent.c:6:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      fs/ramfs/inode.o
  CC      lib/kobject_uevent.o
7 warnings generated.
  AR      kernel/dma/built-in.a
  CC      kernel/entry/common.o
In file included from ../fs/ramfs/inode.c:27:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/ramfs/inode.c:27:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/ramfs/inode.c:27:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/ramfs/inode.c:27:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/ramfs/inode.c:27:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/ramfs/inode.c:27:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/ramfs/inode.c:27:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AR      fs/sysfs/built-in.a
  AR      fs/unicode/built-in.a
  AR      fs/hostfs/built-in.a
In file included from ../lib/kobject_uevent.c:23:
In file included from ../include/linux/skbuff.h:17:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h  CC      fs/open.o
:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/kobject_uevent.c:23:
In file included from ../include/linux/skbuff.h:17:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/kobject_uevent.c:23:
In file included from ../include/linux/skbuff.h:17:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/kobject_uevent.c:23:
In file included from ../include/linux/skbuff.h:17:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/kobject_uevent.c:23:
In file included from ../include/linux/skbuff.h:17:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/kobject_uevent.c:23:
In file included from ../include/linux/skbuff.h:17:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/kobject_uevent.c:23:
In file included from ../include/linux/skbuff.h:17:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      fs/ramfs/file-nommu.o
In file included from ../kernel/entry/common.c:4:
In file included from ../include/linux/entry-common.h:7:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/entry/common.c:4:
In file included from ../include/linux/entry-common.h:7:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/entry/common.c:4:
In file included from ../include/linux/entry-common.h:7:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/entry/common.c:4:
In file included from ../include/linux/entry-common.h:7:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/entry/common.c:4:
In file included from ../include/linux/entry-common.h:7:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/entry/common.c:4:
In file included from ../include/linux/entry-common.h:7:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/entry/common.c:4:
In file included from ../include/linux/entry-common.h:7:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      lib/logic_pio.o
7 warnings generated.
In file included from ../fs/open.c:16:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/open.c:16:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/open.c:16:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/open.c:16:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/open.c:16:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/open.c:16:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/open.c:16:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      kernel/entry/syscall_user_dispatch.o
In file included from ../fs/ramfs/file-nommu.c:11:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/ramfs/file-nommu.c:11:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/ramfs/file-nommu.c:11:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/ramfs/file-nommu.c:11:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/ramfs/file-nommu.c:11:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/ramfs/file-nommu.c:11:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/ramfs/file-nommu.c:11:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../lib/logic_pio.c:12:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/logic_pio.c:12:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/logic_pio.c:12:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/logic_pio.c:12:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/logic_pio.c:12:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/logic_pio.c:12:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/logic_pio.c:12:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  AR      fs/ramfs/built-in.a
  CC      fs/read_write.o
7 warnings generated.
  CC      fs/file_table.o
7 warnings generated.
  CC      lib/maple_tree.o
  AR      kernel/entry/built-in.a
  CC      kernel/time/time.o
In file included from ../fs/read_write.c:15:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/read_write.c:15:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/read_write.c:15:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/read_write.c:15:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/read_write.c:15:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/read_write.c:15:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/read_write.c:15:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../kernel/time/time.c:31:
In file included from ../include/linux/timekeeper_internal.h:10:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/time.c:31:
In file included from ../include/linux/timekeeper_internal.h:10:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/time.c:31:
In file included from ../include/linux/timekeeper_internal.h:10:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/time.c:31:
In file included from ../include/linux/timekeeper_internal.h:10:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/time.c:31:
In file included from ../include/linux/timekeeper_internal.h:10:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/time.c:31:
In file included from ../include/linux/timekeeper_internal.h:10:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, counIn file included from ../fs/file_table.c:16:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
t  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  )104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
;
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55In file included from :../fs/file_table.c:16:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
   812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  note: 105 | #define insw(aexpanded from macro 'outsl'ddr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^

  120 | #defiIn file included from ../fs/file_table.c:16:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  n106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
e outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/file_table.c:16:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/file_table.c:16:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/file_table.c:16:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/time.c:31:
In file included from ../include/linux/timekeeper_internal.h:10:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         In file included from r../fs/file_table.c:16:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 e1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
turn (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      fs/super.o
7 warnings generated.
  CC      fs/char_dev.o
7 warnings generated.
  CC      kernel/time/timer.o
In file included from ../fs/super.c:26:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/super.c:26:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/super.c:26:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/super.c:26:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/super.c:26:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/super.c:26:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/super.c:26:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../kernel/time/timer.c:21:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/timer.c:21:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/timer.c:21:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/timer.c:21:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/timer.c:21:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/timer.c:21:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/timer.c:21:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../fs/char_dev.c:23:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/char_dev.c:23:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/char_dev.c:23:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/char_dev.c:23:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/char_dev.c:23:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/char_dev.c:23:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/char_dev.c:23:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      fs/stat.o
7 warnings generated.
  CC      fs/exec.o
  CC      lib/memcat_p.o
7 warnings generated.
  CC      kernel/time/hrtimer.o
In file included from ../fs/stat.c:8:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/stat.c:8:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/stat.c:8:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/stat.c:8:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/stat.c:8:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/stat.c:8:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/stat.c:8:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      lib/nmi_backtrace.o
In file included from ../fs/exec.c:33:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/exec.c:33:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/exec.c:33:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/exec.c:33:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/exec.c:33:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/exec.c:33:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/exec.c:33:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../kernel/time/hrtimer.c:30:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/hrtimer.c:30:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/hrtimer.c:30:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/hrtimer.c:30:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/hrtimer.c:30:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/hrtimer.c:30:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/hrtimer.c:30:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
In file included from ../lib/nmi_backtrace.c:18:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/nmi_backtrace.c:18:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/nmi_backtrace.c:18:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/nmi_backtrace.c:18:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/nmi_backtrace.c:18:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/nmi_backtrace.c:18:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/nmi_backtrace.c:18:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      fs/pipe.o
7 warnings generated.
  CC      kernel/time/sleep_timeout.o
7 warnings generated.
7 warnings generated.
  CC      kernel/time/timekeeping.o
  CC      lib/objpool.o
In file included from ../fs/pipe.c:17:
In file included from ../include/linux/pseudo_fs.h:4:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/pipe.c:17:
In file included from ../include/linux/pseudo_fs.h:4:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/pipe.c:17:
In file included from ../include/linux/pseudo_fs.h:4:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/pipe.c:17:
In file included from ../include/linux/pseudo_fs.h:4:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/pipe.c:17:
In file included from ../include/linux/pseudo_fs.h:4:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/pipe.c:17:
In file included from ../include/linux/pseudo_fs.h:4:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/pipe.c:17:
In file included from ../include/linux/pseudo_fs.h:4:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../kernel/time/sleep_timeout.c:12:
In file included from ../kernel/time/tick-internal.h:6:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/sleep_timeout.c:12:
In file included from ../kernel/time/tick-internal.h:6:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/sleep_timeout.c:12:
In file included from ../kernel/time/tick-internal.h:6:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/sleep_timeout.c:12:
In file included from ../kernel/time/tick-internal.h:6:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/sleep_timeout.c:12:
In file included from ../kernel/time/tick-internal.h:6:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/sleep_timeout.c:12:
In file included from ../kernel/time/tick-internal.h:6:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/timekeeping.c:6:
In file included from ../include/linux/timekeeper_internal.h:10:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
In file included from ../kernel/time/sleep_timeout.c:12../arch/riscv/include/asm/io.h:
:In file included from 104../kernel/time/tick-internal.h::536::
 In file included from note: ../include/linux/tick.hexpanded from macro 'insb':
8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:  55104: |  #warning: dperforming pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]e
fine insb(ad d1175r | ,         brueftfuerrn,  (cpoourntt )>  _M_MiIOn_sUbP(PPECRI__LIIOMBIATS)E  ?+  N(UaLdLd r:) ,P CbIu_fIfOeBrA,S Ec o+u npto)r
t      ;| 
                                         ~~~~~~~~~~ ^      
|                                                   ~~~~~~~~~~ ^
In file included from ../kernel/time/timekeeping.c:6:
In file included from ../include/linux/timekeeper_internal.h:10:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/timekeeping.c:6:
In file included from ../include/linux/timekeeper_internal.h:10:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/timekeeping.c:6:
In file included from ../include/linux/timekeeper_internal.h:10:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/timekeeping.c:6:
In file included from ../include/linux/timekeeper_internal.h:10:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/timekeeping.c:6:
In file included from ../include/linux/timekeeper_internal.h:10:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/timekeeping.c:6:
In file included from ../include/linux/timekeeper_internal.h:10:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      kernel/time/ntp.o
  CC      lib/plist.o
  CC      lib/radix-tree.o
7 warnings generated.
  CC      fs/namei.o
In file included from ../kernel/time/ntp.c:10:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/ntp.c:10:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/ntp.c:10:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/ntp.c:10:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/ntp.c:10:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/ntp.c:10:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/ntp.c:10:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      kernel/time/clocksource.o
7 warnings generated.
  CC      kernel/time/jiffies.o
In file included from ../fs/namei.c:25:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/namei.c:25:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/namei.c:25:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/namei.c:25:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/namei.c:25:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/namei.c:25:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/namei.c:25:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      lib/ratelimit.o
In file included from ../kernel/time/jiffies.c:7:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/jiffies.c:7:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/jiffies.c:7:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/jiffies.c:7:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/jiffies.c:7:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/jiffies.c:7:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/jiffies.c:7:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      lib/rbtree.o
In file included from ../kernel/time/clocksource.c:11:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/clocksource.c:11:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/clocksource.c:11:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/clocksource.c:11:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/clocksource.c:11:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/clocksource.c:11:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/clocksource.c:11:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      kernel/time/timer_list.o
7 warnings generated.
  CC      kernel/time/timeconv.o
  CC      lib/seq_buf.o
In file included from ../kernel/time/timer_list.c:14:
In file included from ../include/linux/nmi.h  CC      kernel/time/timecounter.o
:9:
In file included from ../arch/riscv/include/asm/irq.h:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/timer_list.c:14:
In file included from ../include/linux/nmi.h:9:
In file included from ../arch/riscv/include/asm/irq.h:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/timer_list.c:14:
In file included from ../include/linux/nmi.h:9:
In file included from ../arch/riscv/include/asm/irq.h:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, coun7t);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
 warnings generated.
In file included from ../kernel/time/timer_list.c:14:
In file included from ../include/linux/nmi.h:9:
In file included from ../arch/riscv/include/asm/irq.h:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/timer_list.c:14:
In file included from ../include/linux/nmi.h:9:
In file included from ../arch/riscv/include/asm/irq.h:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/timer_list.c:14:
In file included from ../include/linux/nmi.h:9:
In file included from ../arch/riscv/include/asm/irq.h:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/timer_list.c:14:
In file included from ../include/linux/nmi.h:9:
In file included from ../arch/riscv/include/asm/irq.h:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      fs/fcntl.o
  CC      kernel/time/alarmtimer.o
  CC      lib/siphash.o
7 warnings generated.
  CC      kernel/time/posix-timers.o
In file included from ../kernel/time/alarmtimer.c:18:
In file included from ../include/linux/rtc.h:17:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/alarmtimer.c:18:
In file included from ../include/linux/rtc.h:17:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/alarmtimer.c:18:
In file included from ../include/linux/rtc.h:17:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/alarmtimer.c:18:
In file included from ../include/linux/rtc.h:17:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/alarmtimer.c:18:
In file included from ../include/linux/rtc.h:17:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/alarmtimer.c:18:
In file included from ../include/linux/rtc.h:17:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/alarmtimer.c:18:
In file included from ../include/linux/rtc.h:17:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      lib/string.o
In file included from ../kernel/time/posix-timers.c:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/posix-timers.c:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASEIn file included from  +../fs/fcntl.c :(8a:
dIn file included from d../include/linux/syscalls.hr:)94,:
 In file included from b../include/trace/syscall.hu:f7f:
eIn file included from r../include/linux/trace_events.h,: 9c:
oIn file included from u../include/linux/hardirq.hn:t11):

In file included from       | ./arch/riscv/include/generated/asm/hardirq.h                                         ~~~~~~~~~~ ^:
1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, bufIn file included from fe../kernel/time/posix-timers.cr:,13 :
cIn file included from o../include/linux/interrupt.hu:n11t:
)In file included from  ../include/linux/hardirq.h_:_11i:
nIn file included from s./arch/riscv/include/generated/asm/hardirq.hb:(1P:
CIn file included from I../include/asm-generic/hardirq.h_:17I:
OIn file included from B../include/linux/irq.hA:S20E:
 In file included from +../include/linux/io.h :(14a:
dIn file included from d../arch/riscv/include/asm/io.hr:)136,:
 ../include/asm-generic/io.hb:u820f:f2e:r ,warning:  performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]c
ount)
        | 820                                         ~~~~~~~~~~ ^ | 
        insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from In file included from ../kernel/time/posix-timers.c:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/posix-timers.c:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/posix-timers.c:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
../fs/fcntl.c:8:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr),In file included from ../kernel/time/posix-timers.c:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/fcntl.c:8:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/fcntl.c:8:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/fcntl.c:8:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/fcntl.c:8:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/fcntl.c:8:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      lib/timerqueue.o
7 warnings generated.
  CC      lib/vsprintf.o
  CC      lib/win_minmax.o
7 warnings generated.
  CC      fs/ioctl.o
7 warnings generated.
  CC      kernel/time/posix-cpu-timers.o
In file included from ../lib/vsprintf.c:36:
In file included from ../include/linux/rtc.h:17:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/vsprintf.c:36:
In file included from ../include/linux/rtc.h:17:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/vsprintf.c:36:
In file included from ../include/linux/rtc.h:17:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/vsprintf.c:36:
In file included from ../include/linux/rtc.h:17:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/vsprintf.c:36:
In file included from ../include/linux/rtc.h:17:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/vsprintf.c:36:
In file included from ../include/linux/rtc.h:17:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/vsprintf.c:36:
In file included from ../include/linux/rtc.h:17:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      lib/xarray.o
In file included from ../kernel/time/posix-cpu-timers.c:12:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/posix-cpu-timers.c:12:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/posix-cpu-timers.c:12:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/posix-cpu-timers.c:12:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/posix-cpu-timers.c:12:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/posix-cpu-timers.c:12:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/posix-cpu-timers.c:12:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../fs/ioctl.c:8:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/ioctl.c:8:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/ioctl.c:8:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/ioctl.c:8:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/ioctl.c:8:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/ioctl.c:8:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/ioctl.c:8:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      fs/readdir.o
7 warnings generated.
  CC      kernel/time/posix-clock.o
  CC      kernel/time/itimer.o
7 warnings generated.
  CC      lib/lockref.o
  CC      lib/bcd.o
In file included from ../fs/readdir.c:19:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/readdir.c:19:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/readdir.c:19:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/readdir.c:19:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/readdir.c:19:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/readdir.c:19:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/posix-clock.c:12:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/posix-clock.c:12:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __inswIn file included from ../fs/readdir.c:19:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 | (PCI_IOBASE + (addr)        return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
, buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/posix-clock.c:12:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/posix-clock.c:12:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/posix-clock.c:12:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/posix-clock.c:12:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/posix-clock.c:12:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      lib/sort.o
  CC      lib/parser.o
7 warnings generated.
7 warnings generated.
In file included from ../kernel/time/itimer.c:9:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/itimer.c:9:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/itimer.c:9:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/itimer.c:9:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/itimer.c:9:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/itimer.c:9:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
  CC      kernel/time/clockevents.o
  CC      fs/select.o
In file included from ../kernel/time/itimer.c:9:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      lib/debug_locks.o
  CC      kernel/time/tick-common.o
In file included from ../kernel/time/clockevents.c:10:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/clockevents.c:10:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/clockevents.c:10:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/clockevents.c:10:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/clockevents.c:10:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/clockevents.c:10:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/clockevents.c:10:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      lib/random32.o
In file included from ../fs/select.c:22:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/select.c:22:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/select.c:22:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/select.c:22:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/select.c:22:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/select.c:22:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/select.c:22:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      kernel/time/tick-broadcast.o
In file included from ../kernel/time/tick-common.c:14:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/tick-common.c:14:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/tick-common.c:14:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/tick-common.c:14:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/tick-common.c:14:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/tick-common.c:14:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/tick-common.c:14:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      lib/bust_spinlocks.o
7 warnings generated.
  CC      kernel/time/sched_clock.o
In file included from ../kernel/time/tick-broadcast.c:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/tick-broadcast.c:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/tick-broadcast.c:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/tick-broadcast.c:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/tick-broadcast.c:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/tick-broadcast.c:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/tick-broadcast.c:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      fs/dcache.o
7 warnings generated.
  CC      fs/inode.o
  CC      lib/kasprintf.o
In file included from ../kernel/time/sched_clock.c:6:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/sched_clock.c:6:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/sched_clock.c:6:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/sched_clock.c:6:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/sched_clock.c:6:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/sched_clock.c:6:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/sched_clock.c:6:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  AR      kernel/time/built-in.a
  CC      kernel/fork.o
  CC      lib/bitmap.o
In file included from ../fs/dcache.c:29:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/dcache.c:29:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/dcache.c:29:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/dcache.c:29:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/dcache.c:29:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/dcache.c:29:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/dcache.c:29:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55:In file included from  warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
../fs/inode.c:10:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/inode.c:10:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/inode.c:10:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/inode.c:10:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/inode.c:10:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/inode.c:10:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/inode.c:10:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../kernel/fork.c:34:
In file included from ../include/linux/mempolicy.h:15:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/fork.c:34:
In file included from ../include/linux/mempolicy.h:15:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/fork.c:34:
In file included from ../include/linux/mempolicy.h:15:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/fork.c:34:
In file included from ../include/linux/mempolicy.h:15:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/fork.c:34:
In file included from ../include/linux/mempolicy.h:15:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/fork.c:34:
In file included from ../include/linux/mempolicy.h:15:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/fork.c:34:
In file included from ../include/linux/mempolicy.h:15:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
7 warnings generated.
  CC      fs/attr.o
  CC      fs/bad_inode.o
  CC      lib/scatterlist.o
7 warnings generated.
  CC      kernel/exec_domain.o
  CC      kernel/panic.o
In file included from ../lib/scatterlist.c:9:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/scatterlist.c:9:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/scatterlist.c:9:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/scatterlist.c:9:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/scatterlist.c:9:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/scatterlist.c:9:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/scatterlist.c:9:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../fs/attr.c:18:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/attr.c:18:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/attr.c:18:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/attr.c:18:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/attr.c:18:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/attr.c:18:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/attr.c:18:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      fs/file.o
In file included from ../kernel/panic.c:14:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/panic.c:14:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/panic.c:14:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/panic.c:14:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/panic.c:14:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/panic.c:14:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/panic.c:14:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      lib/list_sort.o
In file included from ../kernel/exec_domain.c:19:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/exec_domain.c:19:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/exec_domain.c:19:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/exec_domain.c:19:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/exec_domain.c:19:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/exec_domain.c:19:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/exec_domain.c:19:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      lib/uuid.o
7 warnings generated.
  CC      lib/iov_iter.o
  CC      lib/clz_ctz.o
  CC      kernel/cpu.o
7 warnings generated.
  CC      lib/bsearch.o
In file included from ../fs/file.c:10:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/file.c:10:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/file.c:10:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/file.c:10:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/file.c:10:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/file.c:10:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/file.c:10:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../lib/iov_iter.c:3:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/iov_iter.c:3:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/iov_iter.c:3:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/iov_iter.c:3:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/iov_iter.c:3:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/iov_iter.c:3:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/iov_iter.c:3:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../lib/bsearch.c:11:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/bsearch.c:11:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/bsearch.c:11:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/bsearch.c:11:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/bsearch.c:11:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/bsearch.c:11:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/bsearch.c:11:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../kernel/cpu.c:13:
In file included from ../include/linux/sched/isolation.h:7:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/cpu.c:13:
In file included from ../include/linux/sched/isolation.h:7:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/cpu.c:13:
In file included from ../include/linux/sched/isolation.h:7:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/cpu.c:13:
In file included from ../include/linux/sched/isolation.h:7:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/cpu.c:13:
In file included from ../include/linux/sched/isolation.h:7:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/cpu.c:13:
In file included from ../include/linux/sched/isolation.h:7:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/cpu.c:13:
In file included from ../include/linux/sched/isolation.h:7:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      kernel/exit.o
7 warnings generated.
  CC      fs/filesystems.o
7 warnings generated.
  CC      lib/find_bit.o
7 warnings generated.
  CC      kernel/softirq.o
In file included from ../kernel/exit.c:16:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/exit.c:16:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/exit.c:16:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/exit.c:16:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/exit.c:16:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/exit.c:16:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/exit.c:16:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      lib/llist.o
In file included from ../fs/filesystems.c:10:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/filesystems.c:10:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/filesystems.c:10:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/filesystems.c:10:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/filesystems.c:10:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/filesystems.c:10:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/filesystems.c:10:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../kernel/softirq.c:13:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/softirq.c:13:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/softirq.c:13:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/softirq.c:13:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/softirq.c:13:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/softirq.c:13:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
  CC      lib/lwq.o
In file included from ../kernel/softirq.c:13:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      fs/namespace.o
  CC      lib/memweight.o
  CC      lib/kfifo.o
7 warnings generated.
  CC      kernel/resource.o
7 warnings generated.
  CC      kernel/sysctl.o
In file included from ../fs/namespace.c:11:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/namespace.c:11:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/namespace.c:11:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/namespace.c:11:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/namespace.c:11:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/namespace.c:11:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/namespace.c:11:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../lib/kfifo.c:8:
In file included from ../include/linux/dma-mapping.h:8:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/kfifo.c:8:
In file included from ../include/linux/dma-mapping.h:8:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/kfifo.c:8:
In file included from ../include/linux/dma-mapping.h:8:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/kfifo.c:8:
In file included from ../include/linux/dma-mapping.h:8:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/kfifo.c:8:
In file included from ../include/linux/dma-mapping.h:8:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/kfifo.c:8:
In file included from ../include/linux/dma-mapping.h:8:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/kfifo.c:8:
In file included from ../include/linux/dma-mapping.h:8:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../kernel/sysctl.c:24:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/sysctl.c:24:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/sysctl.c:24:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/sysctl.c:24:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/sysctl.c:24:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/sysctl.c:24:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/resource.c:21:
In file included from ../include/linux/pseudo_fs.h:4:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/resource.c:21:
In file included from ../include/linux/pseudo_fs.h:4:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/resource.c:21:
In file included from ../include/linux/pseudo_fs.h:4:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/resource.c:21:
In file included from ../include/linux/pseudo_fs.h:4:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/resource.c:21:
In file included from ../include/linux/pseudo_fs.h:4:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/resource.c:21:
In file included from ../include/linux/pseudo_fs.h:4:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/sysctl.c:24:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../kernel/resource.c:21:
In file included from ../include/linux/pseudo_fs.h:4:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      lib/percpu-refcount.o
7 warnings generated.
  CC      lib/rhashtable.o
  CC      lib/base64.o
  CC      lib/once.o
7 warnings generated.
  CC      kernel/capability.o
7 warnings generated.
  CC      fs/seq_file.o
  CC      lib/refcount.o
  CC      kernel/ptrace.o
In file included from ../kernel/capability.c:17:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/capability.c:17:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/capability.c:17:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/capability.c:17:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/capability.c:17:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/capability.c:17:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/capability.c:17:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      lib/rcuref.o
7 warnings generated.
  CC      kernel/user.o
  CC      fs/xattr.o
  CC      lib/usercopy.o
In file included from ../kernel/ptrace.c:19:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/ptrace.c:19:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/ptrace.c:19:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/ptrace.c:19:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/ptrace.c:19:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/ptrace.c:19:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/ptrace.c:19:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../kernel/user.c:18:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/user.c:18:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/user.c:18:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/user.c:18:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/user.c:18:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/user.c:18:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/user.c:18:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      lib/errseq.o
  CC      lib/bucket_locks.o
In file included from ../fs/xattr.c:18:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:117:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 warning  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.hs generated.
:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/xattr.c:18:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/xattr.c:18:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/xattr.c:18:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/xattr.c:18:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/xattr.c:18:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/xattr.c:18:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      lib/generic-radix-tree.o
7 warnings generated.
  CC      kernel/signal.o
7 warnings generated.
  CC      fs/libfs.o
  CC      kernel/sys.o
  CC      lib/bitmap-str.o
In file included from ../kernel/signal.c:30:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/signal.c:30:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/signal.c:30:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/signal.c:30:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/signal.c:30:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/signal.c:30:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/signal.c:30:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../fs/libfs.c:7:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/libfs.c:7:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/libfs.c:7:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/libfs.c:7:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/libfs.c:7:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/libfs.c:7:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/libfs.c:7:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../kernel/sys.c:10:
In file included from ../include/linux/mm_inline.h:8:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/sys.c:10:
In file included from ../include/linux/mm_inline.h:8:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/sys.c:10:
In file included from ../include/linux/mm_inline.h:8:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/sys.c:10:
In file included from ../include/linux/mm_inline.h:8:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/sys.c:10:
In file included from ../include/linux/mm_inline.h:8:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/sys.c:10:
In file included from ../include/linux/mm_inline.h:8:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/sys.c:10:
In file included from ../include/linux/mm_inline.h:8:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      lib/string_helpers.o
7 warnings generated.
  CC      lib/hexdump.o
7 warnings generated.
  CC      fs/fs-writeback.o
  CC      lib/kstrtox.o
7 warnings generated.
  CC      kernel/umh.o
  CC      lib/iomap_copy.o
  CC      lib/devres.o
In file included from ../fs/fs-writeback.c:24:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/fs-writeback.c:24:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/fs-writeback.c:24:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/fs-writeback.c:24:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/fs-writeback.c:24:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/fs-writeback.c:24:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/fs-writeback.c:24:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../lib/iomap_copy.c:7:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/iomap_copy.c:7:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/iomap_copy.c:7:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/iomap_copy.c:7:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/iomap_copy.c:7:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/iomap_copy.c:7:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/iomap_copy.c:7:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      lib/hweight.o
  CC      lib/bitrev.o
In file included from ../kernel/umh.c:9:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/umh.c:9:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/umh.c:9:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/umh.c:9:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/umh.c:9:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/umh.c:9:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/umh.c:9:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../lib/devres.c:7:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/devres.c:7:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/devres.c:7:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/devres.c:7:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/devres.c:7:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/devres.c:7:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/devres.c:7:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      fs/pnode.o
7 warnings generated.
7 warnings generated.
  HOSTCC  lib/gen_crc32table
  CC      kernel/workqueue.o
  CC      lib/percpu_counter.o
  CC      lib/syscall.o
In file included from ../kernel/workqueue.c:32:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/workqueue.c:32:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/workqueue.c:32:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/workqueue.c:32:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/workqueue.c:32:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/workqueue.c:32:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/workqueue.c:32:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      fs/splice.o
  CC      fs/sync.o
  CC      lib/checksum.o
In file included from ../fs/splice.c:21:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/splice.c:21:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/splice.c:21:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/splice.c:21:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/splice.c:21:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/splice.c:21:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/splice.c:21:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      lib/strncpy_from_user.o
In file included from ../fs/sync.c:6:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/sync.c:6:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/sync.c:6:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/sync.c:6:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/sync.c:6:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/sync.c:6:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/sync.c:6:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      lib/strnlen_user.o
7 warnings generated.
  CC      fs/utimes.o
  CC      lib/group_cpus.o
7 warnings generated.
  CC      kernel/pid.o
  CC      lib/devmem_is_allowed.o
In file included from ../fs/utimes.c:6:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/utimes.c:6:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/utimes.c:6:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/utimes.c:6:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/utimes.c:6:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/utimes.c:6:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/utimes.c:6:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../kernel/pid.c:37:
In file included from ../include/linux/init_task.h:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/pid.c:37:
In file included from ../include/linux/init_task.h:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/pid.c:37:
In file included from ../include/linux/init_task.h:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/pid.c:37:
In file included from ../include/linux/init_task.h:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/pid.c:37:
In file included from ../include/linux/init_task.h:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h  CC      fs/d_path.o
:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/pid.c:37:
In file included from ../include/linux/init_task.h:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/pid.c:37:
In file included from ../include/linux/init_task.h:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      fs/stack.o
In file included from ../lib/devmem_is_allowed.c:13:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/devmem_is_allowed.c:13:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/devmem_is_allowed.c:13:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/devmem_is_allowed.c:13:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/devmem_is_allowed.c:13:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/devmem_is_allowed.c:13:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/devmem_is_allowed.c:13:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  AR      lib/lib.a
  GEN     lib/crc32table.h
  CC      lib/crc32.o
7 warnings generated.
  CC      kernel/task_work.o
  CC      fs/fs_struct.o
In file included from ../fs/d_path.c:2:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/d_path.c:2:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/d_path.c:2:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/d_path.c:2:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/d_path.c:2:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/d_path.c:2:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/d_path.c:2:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      kernel/extable.o
In file included from ../kernel/task_work.c:5:
In file included from ../include/linux/resume_user_mode.h:8:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/task_work.c:5:
In file included from ../include/linux/resume_user_mode.h:8:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/task_work.c:5:
In file included from ../include/linux/resume_user_mode.h:8:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/task_work.c:5:
In file included from ../include/linux/resume_user_mode.h:8:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/task_work.c:5:
In file included from ../include/linux/resume_user_mode.h:8:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/task_work.c:5:
In file included from ../include/linux/resume_user_mode.h:8:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/task_work.c:5:
In file included from ../include/linux/resume_user_mode.h:8:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      fs/statfs.o
  AR      lib/built-in.a
7 warnings generated.
  AS      arch/riscv/lib/clear_page.o
  CC      arch/riscv/lib/csum.o
  CC      arch/riscv/lib/delay.o
In file included from ../kernel/extable.c:7:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/extable.c:7:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/extable.c:7:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/extable.c:7:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/extable.c:7:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/extable.c:7:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/extable.c:7:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AS      arch/riscv/lib/memcpy.o
  AS      arch/riscv/lib/memmove.o
  AS      arch/riscv/lib/memset.o
  CC      arch/riscv/lib/riscv_v_helpers.o
  AS      arch/riscv/lib/strcmp.o
In file included from ../fs/statfs.c:2:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/statfs.c:2:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/statfs.c:2:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/statfs.c:2:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/statfs.c:2:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/statfs.c:2:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
  AS      arch/riscv/lib/strlen.o
In file included from ../fs/statfs.c:2:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      kernel/params.o
  AS      arch/riscv/lib/strncmp.o
  AS      arch/riscv/lib/tishift.o
  AS      arch/riscv/lib/xor.o
7 warnings generated.
  AR      arch/riscv/lib/built-in.a
  CC      fs/fs_pin.o
  AR      arch/riscv/lib/lib.a
  CC      fs/nsfs.o
  AR      drivers/cache/built-in.a
  CC      drivers/irqchip/irqchip.o
In file included from ../kernel/params.c:15:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/params.c:15:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/params.c:15:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/params.c:15:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/params.c:15:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/params.c:15:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/params.c:15:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      fs/fs_types.o
In file included from ../fs/nsfs.c:3:
In file included from ../include/linux/pseudo_fs.h:4:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/nsfs.c:3:
In file included from ../include/linux/pseudo_fs.h:4:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/nsfs.c:3:
In file included from ../include/linux/pseudo_fs.h:4:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/nsfs.c:3:
In file included from ../include/linux/pseudo_fs.h:4:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/nsfs.c:3:
In file included from ../include/linux/pseudo_fs.h:4:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/nsfs.c:3:
In file included from ../include/linux/pseudo_fs.h:4:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/nsfs.c:3:
In file included from ../include/linux/pseudo_fs.h:4:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irqchip.c:14:
In file included from ../include/linux/of_irq.h:7:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irqchip.c:14:
In file included from ../include/linux/of_irq.h:7:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irqchip.c:14:
In file included from ../include/linux/of_irq.h:7:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irqchip.c:14:
In file included from ../include/linux/of_irq.h:7:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irqchip.c:14:
In file included from ../include/linux/of_irq.h:7:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irqchip.c:14:
In file included from ../include/linux/of_irq.h:7:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irqchip.c:14:
In file included from ../include/linux/of_irq.h:7:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
7 warnings generated.
  CC      kernel/kthread.o
  CC      drivers/irqchip/irq-riscv-intc.o
7 warnings generated.
  CC      fs/fs_context.o
  CC      fs/fs_parser.o
In file included from ../kernel/kthread.c:19:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/kthread.c:19:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/kthread.c:19:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/kthread.c:19:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/kthread.c:19:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/kthread.c:19:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/kthread.c:19:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-intc.c:13:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-intc.c:13:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-intc.c:13:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-intc.c:13:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-intc.c:13:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-intc.c:13:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-intc.c:13:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../fs/fs_context.c:11:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/fs_context.c:11:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/fs_context.c:11:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/fs_context.c:11:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/fs_context.c:11:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/fs_context.c:11:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/fs_context.c:11:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      drivers/irqchip/irq-riscv-aplic-main.o
7 warnings generated.
  CC      kernel/sys_ni.o
In file included from ../fs/fs_parser.c:9:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/fs_parser.c:9:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/fs_parser.c:9:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/fs_parser.c:9:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/fs_parser.c:9:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/fs_parser.c:9:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/fs_parser.c:9:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      fs/fsopen.o
  CC      kernel/nsproxy.o
7 warnings generated.
  CC      fs/init.o
In file included from ../drivers/irqchip/irq-riscv-aplic-main.c:13:
In file included from ../include/linux/of_irq.h:7:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-aplic-main.c:13:
In file included from ../include/linux/of_irq.h:7:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-aplic-main.c:13:
In file included from ../include/linux/of_irq.h:7:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-aplic-main.c:13:
In file included from ../include/linux/of_irq.h:7:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-aplic-main.c:13:
In file included from ../include/linux/of_irq.h:7:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-aplic-main.c:13:
In file included from ../include/linux/of_irq.h:7:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-aplic-main.c:13:
In file included from ../include/linux/of_irq.h:7:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../kernel/nsproxy.c:15:
In file included from ../include/linux/init_task.h:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/nsproxy.c:15:
In file included from ../include/linux/init_task.h:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/nsproxy.c:15:
In file included from ../include/linux/init_task.h:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/nsproxy.c:15:
In file included from ../include/linux/init_task.h:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/nsproxy.c:15:
In file included from ../include/linux/init_task.h:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/nsproxy.c:15:
In file included from ../include/linux/init_task.h:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/nsproxy.c:15:
In file included from ../include/linux/init_task.h:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      drivers/irqchip/irq-riscv-aplic-direct.o
In file included from ../fs/fsopen.c:8:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/fsopen.c:8:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/fsopen.c:8:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/fsopen.c:8:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/fsopen.c:8:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/fsopen.c:8:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/fsopen.c:8:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../fs/init.c:13:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/init.c:13:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/init.c:13:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/init.c:13:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/init.c:13:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/init.c:13:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/init.c:13:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      fs/kernel_read_file.o
7 warnings generated.
  CC      fs/mnt_idmapping.o
7 warnings generated.
  CC      kernel/notifier.o
In file included from ../drivers/irqchip/irq-riscv-aplic-direct.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-aplic-direct.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-aplic-direct.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-aplic-direct.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-aplic-direct.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-aplic-direct.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-aplic-direct.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      drivers/irqchip/irq-riscv-aplic-msi.o
In file included from ../kernel/notifier.c:3:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/notifier.c:3:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/notifier.c:3:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/notifier.c:3:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/notifier.c:3:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/notifier.c:3:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/notifier.c:3:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../fs/kernel_read_file.c:5:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/kernel_read_file.c:5:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/kernel_read_file.c:5:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/kernel_read_file.c:5:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/kernel_read_file.c:5:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/kernel_read_file.c:5:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/kernel_read_file.c:5:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      fs/remap_range.o
7 warnings generated.
7 warnings generated.
  CC      kernel/ksysfs.o
  CC      fs/pidfs.o
In file included from ../drivers/irqchip/irq-riscv-aplic-msi.c:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-aplic-msi.c:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-aplic-msi.c:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-aplic-msi.c:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-aplic-msi.c:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-aplic-msi.c:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-aplic-msi.c:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      drivers/irqchip/irq-riscv-imsic-state.o
In file included from ../fs/remap_range.c:9:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/remap_range.c:9:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/remap_range.c:9:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/remap_range.c:9:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/remap_range.c:9:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/remap_range.c:9:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/remap_range.c:9:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../fs/pidfs.c:5:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/pidfs.c:5:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/pidfs.c:5:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/pidfs.c:5:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/pidfs.c:5:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/pidfs.c:5:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/pidfs.c:5:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../kernel/ksysfs.c:15:
In file included from ../include/linux/kexec.h:20:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/ksysfs.c:15:
In file included from ../include/linux/kexec.h:20:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/ksysfs.c:15:
In file included from ../include/linux/kexec.h:20:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/ksysfs.c:15:
In file included from ../include/linux/kexec.h:20:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/ksysfs.c:15:
In file included from ../include/linux/kexec.h:20:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/ksysfs.c:15:
In file included from ../include/linux/kexec.h:20:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/ksysfs.c:15:
In file included from ../include/linux/kexec.h:20:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      kernel/cred.o
7 warnings generated.
  CC      fs/proc_namespace.o
7 warnings generated.
In file included from ../drivers/irqchip/irq-riscv-imsic-state.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-imsic-state.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-imsic-state.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-imsic-state.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-imsic-state.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-imsic-state.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-imsic-state.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      fs/anon_inodes.o
In file included from ../kernel/cred.c:17:
In file included from ../include/linux/init_task.h:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/cred.c:17:
In file included from ../include/linux/init_task.h:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/cred.c:17:
In file included from ../include/linux/init_task.h:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/cred.c:17:
In file included from ../include/linux/init_task.h:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/cred.c:17:
In file included from ../include/linux/init_task.h:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/cred.c:17:
In file included from ../include/linux/init_task.h:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/cred.c:17:
In file included from ../include/linux/init_task.h:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      drivers/irqchip/irq-riscv-imsic-early.o
In file included from ../fs/proc_namespace.c:12:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc_namespace.c:12:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc_namespace.c:12:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc_namespace.c:12:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc_namespace.c:12:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc_namespace.c:12:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc_namespace.c:12:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
7 warnings generated.
  CC      fs/binfmt_script.o
  CC      kernel/reboot.o
In file included from ../fs/anon_inodes.c:23:
In file included from ../include/linux/pseudo_fs.h:4:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/anon_inodes.c:23:
In file included from ../include/linux/pseudo_fs.h:4:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/anon_inodes.c:23:
In file included from ../include/linux/pseudo_fs.h:4:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/anon_inodes.c:23:
In file included from ../include/linux/pseudo_fs.h:4:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/anon_inodes.c:23:
In file included from ../include/linux/pseudo_fs.h:4:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/anon_inodes.c:23:
In file included from ../include/linux/pseudo_fs.h:4:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/anon_inodes.c:23:
In file included from ../include/linux/pseudo_fs.h:4:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      fs/binfmt_elf_fdpic.o
In file included from ../drivers/irqchip/irq-riscv-imsic-early.c:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-imsic-early.c:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-imsic-early.c:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-imsic-early.c:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-imsic-early.c:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-imsic-early.c:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-imsic-early.c:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      drivers/irqchip/irq-riscv-imsic-platform.o
  CC      fs/binfmt_flat.o
In file included from ../kernel/reboot.c:13:
In file included from ../include/linux/kexec.h:20:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/reboot.c:13:
In file included from ../include/linux/kexec.h:20:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/reboot.c:13:
In file included from ../include/linux/kexec.h:20:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/reboot.c:13:
In file included from ../include/linux/kexec.h:20:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/reboot.c:13:
In file included from ../include/linux/kexec.h:20:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/reboot.c:13:
In file included from ../include/linux/kexec.h:20:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/reboot.c:13:
In file included from ../include/linux/kexec.h:20:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../fs/binfmt_elf_fdpic.c:26:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/binfmt_elf_fdpic.c:26:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/binfmt_elf_fdpic.c:26:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/binfmt_elf_fdpic.c:26:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/binfmt_elf_fdpic.c:26:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/binfmt_elf_fdpic.c:26:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/binfmt_elf_fdpic.c:26:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      kernel/async.o
In file included from ../drivers/irqchip/irq-riscv-imsic-platform.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-imsic-platform.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-imsic-platform.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-imsic-platform.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-imsic-platform.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-imsic-platform.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-imsic-platform.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      fs/drop_caches.o
7 warnings generated.
  CC      drivers/irqchip/irq-sifive-plic.o
  CC      fs/sysctls.o
  CC      kernel/range.o
  CC      kernel/smpboot.o
  CC      kernel/ucount.o
In file included from ../fs/drop_caches.c:6:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/drop_caches.c:6:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/drop_caches.c:6:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/drop_caches.c:6:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/drop_caches.c:6:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/drop_caches.c:6:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/drop_caches.c:6:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-sifive-plic.c:9:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-sifive-plic.c:9:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-sifive-plic.c:9:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-sifive-plic.c:9:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-sifive-plic.c:9:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-sifive-plic.c:9:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-sifive-plic.c:9:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  AR      fs/built-in.a
  CC      kernel/regset.o
  CC      kernel/ksyms_common.o
7 warnings generated.
  AR      drivers/irqchip/built-in.a
  AR      drivers/bus/mhi/built-in.a
  CC      drivers/bus/simple-pm-bus.o
  CC      kernel/groups.o
  CC      kernel/freezer.o
In file included from ../kernel/freezer.c:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/freezer.c:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/freezer.c:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/freezer.c:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/freezer.c:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/freezer.c:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/freezer.c:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../kernel/ksyms_common.c:7:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/ksyms_common.c:7:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/ksyms_common.c:7:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/ksyms_common.c:7:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/ksyms_common.c:7:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/ksyms_common.c:7:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/ksyms_common.c:7:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AR      drivers/bus/built-in.a
  AR      drivers/pinctrl/actions/built-in.a
  AR      drivers/pinctrl/bcm/built-in.a
  AR      drivers/pinctrl/cirrus/built-in.a
7 warnings generated.
In file included from ../kernel/groups.c:8:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/groups.c:8:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/groups.c:8:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/groups.c:8:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #d  AR      drivers/pinctrl/freescale/built-in.a
efine outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/groups.c:8:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/groups.c:8:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/groups.c:8:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      kernel/smp.o
  AR      drivers/pinctrl/mediatek/built-in.a
  AR      drivers/pinctrl/mvebu/built-in.a
  AR      drivers/pinctrl/nomadik/built-in.a
  AR      drivers/pinctrl/nuvoton/built-in.a
  AR      drivers/pinctrl/nxp/built-in.a
  AR      drivers/pinctrl/qcom/built-in.a
  AR      drivers/pinctrl/sophgo/built-in.a
  AR      drivers/pinctrl/spacemit/built-in.a
7 warnings generated.
  AR      drivers/pinctrl/sprd/built-in.a
  CC      kernel/stop_machine.o
  AR      drivers/pinctrl/sunplus/built-in.a
  AR      drivers/pinctrl/ti/built-in.a
  CC      drivers/pinctrl/core.o
7 warnings generated.
  CC      kernel/utsname_sysctl.o
In file included from ../kernel/smp.c:17:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/smp.c:17:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/smp.c:17:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/smp.c:17:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/smp.c:17:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/smp.c:17:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/smp.c:17:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      kernel/irq_work.o
In file included from ../kernel/stop_machine.c:19:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/stop_machine.c:19:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/stop_machine.c:19:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/stop_machine.c:19:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/stop_machine.c:19:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/stop_machine.c:19:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/stop_machine.c:19:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../drivers/pinctrl/core.c:28:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/pinctrl/core.c:28:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/pinctrl/core.c:28:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/pinctrl/core.c:28:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/pinctrl/core.c:28:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/pinctrl/core.c:28:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/pinctrl/core.c:28:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      kernel/cpu_pm.o
In file included from ../kernel/irq_work.c:14:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq_work.c:14:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq_work.c:14:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, coun7t warning)s  generated_.
_insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq_work.c:14:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq_work.c:14:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq_work.c:14:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq_work.c:14:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      kernel/context_tracking.o
7 warnings generated.
  CC      drivers/pinctrl/pinctrl-utils.o
7 warnings generated.
  CC      kernel/iomem.o
In file included from ../kernel/context_tracking.c:23:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/context_tracking.c:23:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/context_tracking.c:23:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/context_tracking.c:23:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/context_tracking.c:23:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/context_tracking.c:23:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/context_tracking.c:23:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      kernel/rseq.o
7 warnings generated.
  CC      drivers/pinctrl/pinmux.o
In file included from ../kernel/iomem.c:4:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 |   CC      drivers/pinctrl/pinconf.o
#define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/iomem.c:4:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/iomem.c:4:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/iomem.c:4:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/iomem.c:4:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/iomem.c:4:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/iomem.c:4:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      drivers/pinctrl/pinconf-generic.o
In file included from ../kernel/rseq.c:13:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/rseq.c:13:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/rseq.c:13:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/rseq.c:13:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/rseq.c:13:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/rseq.c:13:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/rseq.c:13:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  AR      kernel/built-in.a
  AR      sound/built-in.a
  AR      virt/lib/built-in.a
  AR      virt/built-in.a
  CC      drivers/pinctrl/devicetree.o
  CC      drivers/gpio/gpiolib.o
  CC      drivers/pinctrl/pinctrl-k210.o
  CC      drivers/gpio/gpiolib-devres.o
In file included from ../drivers/pinctrl/pinctrl-k210.c:8:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/pinctrl/pinctrl-k210.c:8:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/pinctrl/pinctrl-k210.c:8:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/pinctrl/pinctrl-k210.c:8:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/pinctrl/pinctrl-k210.c:8:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/pinctrl/pinctrl-k210.c:8:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/pinctrl/pinctrl-k210.c:8:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpiolib.c:15:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpiolib.c:15:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpiolib.c:15:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpiolib.c:15:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpiolib.c:15:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpiolib.c:15:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpiolib.c:15:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpiolib-devres.c:17:
In file included from ../drivers/gpio/gpiolib.h:16:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpiolib-devres.c:17:
In file included from ../drivers/gpio/gpiolib.h:16:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpiolib-devres.c:17:
In file included from ../drivers/gpio/gpiolib.h:16:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpiolib-devres.c:17:
In file included from ../drivers/gpio/gpiolib.h:16:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpiolib-devres.c:17:
In file included from ../drivers/gpio/gpiolib.h:16:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpiolib-devres.c:17:
In file included from ../drivers/gpio/gpiolib.h:16:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpiolib-devres.c:17:
In file included from ../drivers/gpio/gpiolib.h:16:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AR      drivers/pwm/built-in.a
7 warnings generated.
  CC      drivers/gpio/gpiolib-legacy.o
  AR      drivers/leds/blink/built-in.a
  AR      drivers/leds/simple/built-in.a
  CC      drivers/leds/led-core.o
7 warnings generated.
  AR      drivers/pinctrl/built-in.a
  AR      drivers/pci/controller/dwc/built-in.a
  AR      drivers/pci/controller/mobiveil/built-in.a
  AR      drivers/pci/controller/plda/built-in.a
  AR      drivers/pci/controller/built-in.a
  AR      drivers/pci/switch/built-in.a
  CC      drivers/pci/of.o
In file included from ../drivers/gpio/gpiolib-legacy.c:9:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpiolib-legacy.c:9:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpiolib-legacy.c:9:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpiolib-legacy.c:9:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpiolib-legacy.c:9:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpiolib-legacy.c:9:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpiolib-legacy.c:9:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      drivers/gpio/gpiolib-of.o
7 warnings generated.
  CC      drivers/gpio/gpiolib-cdev.o
In file included from ../drivers/pci/of.c:12:
In file included from ../include/linux/pci.h:38:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/pci/of.c:12:
In file included from ../include/linux/pci.h:38:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/pci/of.c:12:
In file included from ../include/linux/pci.h:38:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/pci/of.c:12:
In file included from ../include/linux/pci.h:38:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/pci/of.c:12:
In file included from ../include/linux/pci.h:38:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/pci/of.c:12:
In file included from ../include/linux/pci.h:38:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/pci/of.c:12:
In file included from ../include/linux/pci.h:38:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      drivers/leds/led-class.o
7 warnings generated.
  AR      drivers/pci/built-in.a
  AR      drivers/video/backlight/built-in.a
  AR      drivers/video/fbdev/core/built-in.a
In file included from ../drivers/gpio/gpiolib-of.c:13:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpiolib-of.c:13:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpiolib-of.c:13:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpiolib-of.c:13:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpiolib-of.c:13:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpiolib-of.c:13:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
  AR      drivers/video/fbdev/omap/built-in.a
In file included from ../drivers/gpio/gpiolib-of.c:13:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AR      drivers/video/fbdev/omap2/omapfb/dss/built-in.a
  AR      drivers/video/fbdev/omap2/omapfb/displays/built-in.a
  AR      drivers/video/fbdev/omap2/omapfb/built-in.a
  AR      drivers/video/fbdev/omap2/built-in.a
  AR      drivers/video/fbdev/built-in.a
  AR      drivers/video/built-in.a
  AR      drivers/idle/built-in.a
  AR      drivers/char/ipmi/built-in.a
7 warnings generated.
  AR      drivers/amba/built-in.a
  CC      drivers/gpio/gpiolib-swnode.o
  AR      drivers/clk/actions/built-in.a
  AR      drivers/clk/analogbits/built-in.a
In file included from ../drivers/gpio/gpiolib-cdev.c:15:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpiolib-cdev.c:15:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpiolib-cdev.c:15:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpiolib-cdev.c:15:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpiolib-cdev.c:15:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpiolib-cdev.c:15:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpiolib-cdev.c:15:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AR      drivers/clk/bcm/built-in.a
  AR      drivers/clk/imgtec/built-in.a
  AR      drivers/clk/imx/built-in.a
  AR      drivers/clk/ingenic/built-in.a
  AR      drivers/clk/mediatek/built-in.a
  AR      drivers/clk/microchip/built-in.a
  AR      drivers/clk/mstar/built-in.a
  AR      drivers/clk/mvebu/built-in.a
  AR      drivers/clk/ralink/built-in.a
  CC      drivers/leds/leds-gpio.o
  AR      drivers/clk/renesas/built-in.a
  AR      drivers/clk/socfpga/built-in.a
  AR      drivers/clk/sophgo/built-in.a
In file included from ../drivers/gpio/gpiolib-swnode.c:20:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpiolib-swnode.c:20:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpiolib-swnode.c:20:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpiolib-swnode.c:20:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpiolib-swnode.c:20:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpiolib-swnode.c:20:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpiolib-swnode.c:20:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AR      drivers/clk/sprd/built-in.a
  AR      drivers/clk/starfive/built-in.a
  AR      drivers/clk/sunxi-ng/built-in.a
  AR      drivers/clk/ti/built-in.a
7 warnings generated.
  AR      drivers/clk/versatile/built-in.a
  CC      drivers/gpio/gpio-mmio.o
  AR      drivers/clk/xilinx/built-in.a
  CC      drivers/clk/clk-devres.o
7 warnings generated.
  CC      drivers/gpio/gpio-dwapb.o
In file included from ../drivers/gpio/gpio-mmio.c:47:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpio-mmio.c:47:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpio-mmio.c:47:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpio-mmio.c:47:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpio-mmio.c:47:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpio-mmio.c:47:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpio-mmio.c:47:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      drivers/leds/uleds.o
7 warnings generated.
  CC      drivers/gpio/gpio-sifive.o
  CC      drivers/clk/clk-bulk.o
In file included from ../drivers/gpio/gpio-dwapb.c:10:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpio-dwapb.c:10:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpio-dwapb.c:10:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpio-dwapb.c:10:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpio-dwapb.c:10:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpio-dwapb.c:10:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpio-dwapb.c:10:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AR      drivers/leds/built-in.a
  AR      drivers/soc/apple/built-in.a
  AR      drivers/soc/aspeed/built-in.a
  AR      drivers/soc/bcm/built-in.a
7 warnings generated.
  CC      drivers/soc/canaan/k210-sysctl.o
  AR      drivers/soc/fsl/built-in.a
  AR      drivers/soc/fujitsu/built-in.a
  AR      drivers/soc/hisilicon/built-in.a
  AR      drivers/soc/imx/built-in.a
In file included from ../drivers/gpio/gpio-sifive.c:9:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpio-sifive.c:9:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpio-sifive.c:9:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpio-sifive.c:9:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpio-sifive.c:9:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpio-sifive.c:9:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpio-sifive.c:9:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AR      drivers/soc/ixp4xx/built-in.a
  AR      drivers/soc/loongson/built-in.a
  AR      drivers/soc/mediatek/built-in.a
  AR      drivers/soc/microchip/built-in.a
  CC      drivers/clk/clkdev.o
7 warnings generated.
  AR      drivers/gpio/built-in.a
In file included from ../drivers/soc/canaan/k210-sysctl.c:6:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/soc/canaan/k210-sysctl.c:6:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/soc/canaan/k210-sysctl.c:6:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/soc/canaan/k210-sysctl.c:6:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/soc/canaan/k210-sysctl.c:6:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/soc/canaan/k210-sysctl.c:6:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
  AR      drivers/virtio/built-in.a
  CC      drivers/clk/clk.o
In file included from ../drivers/soc/canaan/k210-sysctl.c:6:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AR      drivers/reset/amlogic/built-in.a
  AR      drivers/reset/hisilicon/built-in.a
  AR      drivers/reset/starfive/built-in.a
  AR      drivers/reset/sti/built-in.a
  AR      drivers/reset/tegra/built-in.a
  CC      drivers/reset/core.o
7 warnings generated.
  AR      drivers/soc/canaan/built-in.a
  AR      drivers/soc/nuvoton/built-in.a
  AR      drivers/soc/pxa/built-in.a
  AR      drivers/soc/amlogic/built-in.a
  AR      drivers/soc/qcom/built-in.a
  AR      drivers/soc/renesas/built-in.a
  AR      drivers/soc/rockchip/built-in.a
  AR      drivers/soc/sunxi/built-in.a
  AR      drivers/soc/ti/built-in.a
  CC      drivers/clk/clk-divider.o
  AR      drivers/soc/versatile/built-in.a
  AR      drivers/soc/xilinx/built-in.a
  AR      drivers/soc/built-in.a
  AR      drivers/tty/vt/built-in.a
  AR      drivers/tty/serial/8250/built-in.a
  CC      drivers/tty/serial/serial_core.o
In file included from ../drivers/reset/core.c:14:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/reset/core.c:14:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/reset/core.c:14:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/reset/core.c:14:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/reset/core.c:14:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/reset/core.c:14:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/reset/core.c:14:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      drivers/reset/reset-k210.o
In file included from ../drivers/clk/clk-divider.c:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-divider.c:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-divider.c:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-divider.c:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-divider.c:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-divider.c:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-divider.c:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../drivers/tty/serial/serial_core.c:25:
In file included from ../include/linux/serial_core.h:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/serial/serial_core.c:25:
In file included from ../include/linux/serial_core.h:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/serial/serial_core.c:25:
In file included from ../include/linux/serial_core.h:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/serial/serial_core.c:25:
In file included from ../include/linux/serial_core.h:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/tty/serial/serial_core.c:25:
In file included from ../include/linux/serial_core.h:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/tty/serial/serial_core.c:25:
In file included from ../include/linux/serial_core.h:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/tty/serial/serial_core.c:25:
In file included from ../include/linux/serial_core.h:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      drivers/clk/clk-fixed-factor.o
7 warnings generated.
  CC      drivers/clk/clk-fixed-rate.o
In file included from ../drivers/reset/reset-k210.c:10:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/reset/reset-k210.c:10:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/reset/reset-k210.c:10:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/reset/reset-k210.c:10:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/reset/reset-k210.c:10:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/reset/reset-k210.c:10:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/reset/reset-k210.c:10:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  AR      drivers/reset/built-in.a
  AR      drivers/char/agp/built-in.a
  CC      drivers/char/mem.o
In file included from ../drivers/clk/clk-fixed-rate.c:12:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-fixed-rate.c:12:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-fixed-rate.c:12:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-fixed-rate.c:12:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-fixed-rate.c:12:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-fixed-rate.c:12:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-fixed-rate.c:12:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      drivers/clk/clk-gate.o
7 warnings generated.
  CC      drivers/clk/clk-multiplier.o
7 warnings generated.
  CC      drivers/tty/serial/serial_base_bus.o
In file included from ../drivers/clk/clk-multiplier.c:10:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-multiplier.c:10:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-multiplier.c:10:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-multiplier.c:10:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-multiplier.c:10:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-multiplier.c:10:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-multiplier.c:10:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  AR      drivers/iommu/amd/built-in.a
  AR      drivers/iommu/intel/built-in.a
  AR      drivers/iommu/arm/arm-smmu/built-in.a
  AR      drivers/iommu/arm/arm-smmu-v3/built-in.a
  AR      drivers/iommu/arm/built-in.a
  AR      drivers/iommu/iommufd/built-in.a
  AR      drivers/iommu/riscv/built-in.a
  AR      drivers/iommu/built-in.a
In file included from ../drivers/tty/serial/serial_base_bus.c:16:
In file included from ../include/linux/serial_core.h:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/serial/serial_base_bus.c:16:
In file included from ../include/linux/serial_core.h:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/serial/serial_base_bus.c:16:
In file included from ../include/linux/serial_core.h:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/serial/serial_base_bus.c:16:
In file included from ../include/linux/serial_core.h:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/tty/serial/serial_base_bus.c:16:
In file included from ../include/linux/serial_core.h:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/tty/serial/serial_base_bus.c:16:
In file included from ../include/linux/serial_core.h:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/tty/serial/serial_base_bus.c:16:
In file included from ../include/linux/serial_core.h:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../drivers/char/mem.c:23:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/char/mem.c:23:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/char/mem.c:23:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/char/mem.c:23:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/char/mem.c:23:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/char/mem.c:23:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
  AR      drivers/gpu/host1x/built-in.a
In file included from ../drivers/char/mem.c:23:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      drivers/tty/serial/serial_ctrl.o
In file included from ../drivers/clk/clk-gate.c:13:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-gate.c:13:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-gate.c:13:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-gate.c:13:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-gate.c:13:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-gate.c:13:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-gate.c:13:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      drivers/clk/clk-mux.o
7 warnings generated.
  AR      drivers/gpu/drm/tests/built-in.a
  CC      drivers/char/random.o
  AR      drivers/gpu/drm/arm/built-in.a
  AR      drivers/gpu/drm/display/built-in.a
  AR      drivers/gpu/drm/renesas/rcar-du/built-in.a
  AR      drivers/gpu/drm/renesas/rz-du/built-in.a
  AR      drivers/gpu/drm/renesas/built-in.a
  AR      drivers/gpu/drm/omapdrm/built-in.a
  AR      drivers/gpu/drm/tilcdc/built-in.a
  AR      drivers/gpu/drm/imx/built-in.a
  AR      drivers/gpu/drm/i2c/built-in.a
  AR      drivers/gpu/drm/panel/built-in.a
  AR      drivers/gpu/drm/bridge/analogix/built-in.a
  AR      drivers/gpu/drm/bridge/cadence/built-in.a
  AR      drivers/gpu/drm/bridge/imx/built-in.a
  AR      drivers/gpu/drm/bridge/synopsys/built-in.a
  AR      drivers/gpu/drm/bridge/built-in.a
  AR      drivers/gpu/drm/hisilicon/built-in.a
  AR      drivers/gpu/drm/mxsfb/built-in.a
  AR      drivers/gpu/drm/tiny/built-in.a
  AR      drivers/gpu/drm/xlnx/built-in.a
  AR      drivers/gpu/drm/gud/built-in.a
  AR      drivers/gpu/drm/solomon/built-in.a
  AR      drivers/gpu/drm/built-in.a
  AR      drivers/gpu/vga/built-in.a
In file included from ../drivers/char/random.c:39:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/char/random.c:39:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/char/random.c:39:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/char/random.c:39:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/char/random.c:39:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/char/random.c:39:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/char/random.c:39:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AR      drivers/gpu/built-in.a
  CC      drivers/char/misc.o
In file included from ../drivers/tty/serial/serial_ctrl.c:16:
In file included from ../include/linux/serial_core.h:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/serial/serial_ctrl.c:16:
In file included from ../include/linux/serial_core.h:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/serial/serial_ctrl.c:16:
In file included from ../include/linux/serial_core.h:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/serial/serial_ctrl.c:16:
In file included from ../include/linux/serial_core.h:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/tty/serial/serial_ctrl.c:16:
In file included from ../include/linux/serial_core.h:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/tty/serial/serial_ctrl.c:16:
In file included from ../include/linux/serial_core.h:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/tty/serial/serial_ctrl.c:16:
In file included from ../include/linux/serial_core.h:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
In file included from ../drivers/clk/clk-mux.c:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-mux.c:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-mux.c:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-mux.c:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-mux.c:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-mux.c:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-mux.c:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      drivers/tty/serial/serial_port.o
7 warnings generated.
  CC      drivers/clk/clk-composite.o
7 warnings generated.
  CC      drivers/clk/clk-fractional-divider.o
  AR      drivers/char/built-in.a
  CC      drivers/base/power/sysfs.o
  CC      drivers/base/firmware_loader/builtin/main.o
In file included from ../drivers/clk/clk-fractional-divider.c:43:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-fractional-divider.c:43:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-fractional-divider.c:43:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-fractional-divider.c:43:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-fractional-divider.c:43:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-fractional-divider.c:43:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-fractional-divider.c:43:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../drivers/tty/serial/serial_port.c:16:
In file included from ../include/linux/serial_core.h:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/serial/serial_port.c:16:
In file included from ../include/linux/serial_core.h:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/serial/serial_port.c:16:
In file included from ../include/linux/serial_core.h:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/serial/serial_port.c:16:
In file included from ../include/linux/serial_core.h:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/tty/serial/serial_port.c:16:
In file included from ../include/linux/serial_core.h:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/tty/serial/serial_port.c:16:
In file included from ../include/linux/serial_core.h:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/tty/serial/serial_port.c:16:
In file included from ../include/linux/serial_core.h:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      drivers/clk/clk-gpio.o
  CC      drivers/base/power/generic_ops.o
  AR      drivers/base/firmware_loader/builtin/built-in.a
7 warnings generated.
  AR      drivers/base/firmware_loader/built-in.a
  CC      drivers/tty/serial/earlycon.o
  CC      drivers/base/regmap/regmap.o
In file included from ../drivers/clk/clk-gpio.c:20:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-gpio.c:20:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-gpio.c:20:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-gpio.c:20:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-gpio.c:20:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-gpio.c:20:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-gpio.c:20:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../drivers/tty/serial/earlycon.c:16:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/serial/earlycon.c:16:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/serial/earlycon.c:16:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/serial/earlycon.c:16:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/tty/serial/earlycon.c:16:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/tty/serial/earlycon.c:16:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/tty/serial/earlycon.c:16:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      drivers/base/power/common.o
7 warnings generated.
In file included from ../drivers/base/regmap/regmap.c:23:
In file included from ../drivers/base/regmap/trace.h:11:
In file included from ../drivers/base/regmap/internal.h:14:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/regmap/regmap.c:23:
In file included from ../drivers/base/regmap/trace.h:11:
In file included from ../drivers/base/regmap/internal.h:14:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/regmap/regmap.c:23:
In file included from ../drivers/base/regmap/trace.h:11:
In file included from ../drivers/base/regmap/internal.h:14:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/regmap/regmap.c:23:
In file included from ../drivers/base/regmap/trace.h:11:
In file included from ../drivers/base/regmap/internal.h:14:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/regmap/regmap.c:23:
In file included from ../drivers/base/regmap/trace.h:11:
In file included from ../drivers/base/regmap/internal.h:14:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/regmap/regmap.c:23:
In file included from ../drivers/base/regmap/trace.h:11:
In file included from ../drivers/base/regmap/internal.h:14:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
  CC      drivers/clk/clk-conf.o
In file included from ../drivers/base/regmap/regmap.c:23:
In file included from ../drivers/base/regmap/trace.h:11:
In file included from ../drivers/base/regmap/internal.h:14:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      drivers/tty/serial/sifive.o
7 warnings generated.
  CC      drivers/base/regmap/regcache.o
In file included from ../drivers/tty/serial/sifive.c:35:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/serial/sifive.c:35:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/serial/sifive.c:35:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/serial/sifive.c:35:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/tty/serial/sifive.c:35:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/tty/serial/sifive.c:35:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/tty/serial/sifive.c:35:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      drivers/clk/clk-k210.o
  CC      drivers/base/power/qos.o
7 warnings generated.
  AR      drivers/tty/serial/built-in.a
  AR      drivers/tty/ipwireless/built-in.a
  CC      drivers/tty/tty_io.o
In file included from ../drivers/clk/clk-k210.c:8:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-k210.c:8:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-k210.c:8:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-k210.c:8:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-k210.c:8:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-k210.c:8:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-k210.c:8:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../drivers/base/regmap/regcache.c:15:
In file included from ../drivers/base/regmap/trace.h:11:
In file included from ../drivers/base/regmap/internal.h:14:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/regmap/regcache.c:15:
In file included from ../drivers/base/regmap/trace.h:11:
In file included from ../drivers/base/regmap/internal.h:14:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/regmap/regcache.c:15:
In file included from ../drivers/base/regmap/trace.h:11:
In file included from ../drivers/base/regmap/internal.h:14:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/regmap/regcache.c:15:
In file included from ../drivers/base/regmap/trace.h:11:
In file included from ../drivers/base/regmap/internal.h:14:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/regmap/regcache.c:15:
In file included from ../drivers/base/regmap/trace.h:11:
In file included from ../drivers/base/regmap/internal.h:14:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/regmap/regcache.c:15:
In file included from ../drivers/base/regmap/trace.h:11:
In file included from ../drivers/base/regmap/internal.h:14:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/regmap/regcache.c:15:
In file included from ../drivers/base/regmap/trace.h:11:
In file included from ../drivers/base/regmap/internal.h:14:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
In file included from ../drivers/tty/tty_io.c:75:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_io.c:75:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_io.c:75:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_io.c:75:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_io.c:75:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_io.c:75:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
  CC      drivers/base/regmap/regcache-rbtree.o
In file included from ../drivers/tty/tty_io.c:75:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  AR      drivers/clk/built-in.a
  CC      drivers/base/regmap/regcache-flat.o
In file included from ../drivers/base/power/qos.c:38:
In file included from ../include/trace/events/power.h:12:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/power/qos.c:38:
In file included from ../include/trace/events/power.h:12:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/power/qos.c:38:
In file included from ../include/trace/events/power.h:12:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/power/qos.c:38:
In file included from ../include/trace/events/power.h:12:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/power/qos.c:38:
In file included from ../include/trace/events/power.h:12:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/power/qos.c:38:
In file included from ../include/trace/events/power.h:12:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/power/qos.c:38:
In file included from ../include/trace/events/power.h:12:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      drivers/base/power/runtime.o
In file included from ../drivers/base/regmap/regcache-flat.c:13:
In file included from ../drivers/base/regmap/internal.h:14:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/regmap/regcache-flat.c:13:
In file included from ../drivers/base/regmap/internal.h:14:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/regmap/regcache-flat.c:13:
In file included from ../drivers/base/regmap/internal.h:14:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/regmap/regcache-flat.c:13:
In file included from ../drivers/base/regmap/internal.h:14:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/regmap/regcache-flat.c:13:
In file included from ../drivers/base/regmap/internal.h:14:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/regmap/regcache-flat.c:13:
In file included from ../drivers/base/regmap/internal.h:14:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/regmap/regcache-flat.c:13:
In file included from ../drivers/base/regmap/internal.h:14:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      drivers/base/regmap/regcache-maple.o
In file included from ../drivers/base/regmap/regcache-rbtree.c:15:
In file included from ../drivers/base/regmap/internal.h:14:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/regmap/regcache-rbtree.c:15:
In file included from ../drivers/base/regmap/internal.h:14:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/regmap/regcache-rbtree.c:15:
In file included from ../drivers/base/regmap/internal.h:14:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/regmap/regcache-rbtree.c:15:
In file included from ../drivers/base/regmap/internal.h:14:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/regmap/regcache-rbtree.c:15:
In file included from ../drivers/base/regmap/internal.h:14:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/regmap/regcache-rbtree.c:15:
In file included from ../drivers/base/regmap/internal.h:14:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/regmap/regcache-rbtree.c:15:
In file included from ../drivers/base/regmap/internal.h:14:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      drivers/tty/n_tty.o
7 warnings generated.
  CC      drivers/tty/tty_ioctl.o
In file included from ../drivers/base/regmap/regcache-maple.c:14:
In file included from ../drivers/base/regmap/internal.h:14:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/regmap/regcache-maple.c:14:
In file included from ../drivers/base/regmap/internal.h:14:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/regmap/regcache-maple.c:14:
In file included from ../drivers/base/regmap/internal.h:14:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/regmap/regcache-maple.c:14:
In file included from ../drivers/base/regmap/internal.h:14:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/regmap/regcache-maple.c:14:
In file included from ../drivers/base/regmap/internal.h:14:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/regmap/regcache-maple.c:14:
In file included from ../drivers/base/regmap/internal.h:14:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/regmap/regcache-maple.c:14:
In file included from ../drivers/base/regmap/internal.h:14:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      drivers/base/power/wakeirq.o
7 warnings generated.
  CC      drivers/base/regmap/regmap-mmio.o
In file included from ../drivers/tty/tty_ioctl.c:28:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_ioctl.c:28:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_ioctl.c:28:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_ioctl.c:28:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_ioctl.c:28:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_ioctl.c:28:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_ioctl.c:28:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../drivers/base/regmap/regmap-mmio.c:9:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/regmap/regmap-mmio.c:9:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/regmap/regmap-mmio.c:9:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/regmap/regmap-mmio.c:9:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/regmap/regmap-mmio.c:9:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/regmap/regmap-mmio.c:9:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/regmap/regmap-mmio.c:9:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  AR      drivers/base/test/built-in.a
  CC      drivers/base/component.o
In file included from ../drivers/base/power/wakeirq.c:4:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/power/wakeirq.c:4:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/power/wakeirq.c:4:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/power/wakeirq.c:4:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/power/wakeirq.c:4:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/power/wakeirq.c:4:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/power/wakeirq.c:4:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      drivers/base/power/main.o
7 warnings generated.
  AR      drivers/base/regmap/built-in.a
  CC      drivers/tty/tty_ldisc.o
  CC      drivers/base/core.o
In file included from ../drivers/tty/tty_ldisc.c:6:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_ldisc.c:6:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_ldisc.c:6:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_ldisc.c:6:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_ldisc.c:6:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_ldisc.c:6:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_ldisc.c:6:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      drivers/base/bus.o
In file included from ../drivers/base/power/main.c:28:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/power/main.c:28:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/power/main.c:28:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/power/main.c:28:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/power/main.c:28:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/power/main.c:28:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/power/main.c:28:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../drivers/base/core.c:12:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/core.c:12:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/core.c:12:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/core.c:12:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/core.c:12:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/core.c:12:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/core.c:12:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      drivers/tty/tty_buffer.o
7 warnings generated.
  CC      drivers/base/power/wakeup.o
  CC      drivers/base/dd.o
  CC      drivers/tty/tty_port.o
In file included from ../drivers/base/power/wakeup.c:14:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/power/wakeup.c:14:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/power/wakeup.c:14:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/power/wakeup.c:14:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/power/wakeup.c:14:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/power/wakeup.c:14:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/power/wakeup.c:14:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      drivers/base/syscore.o
In file included from ../drivers/base/dd.c:22:
In file included from ../include/linux/dma-map-ops.h:9:
In file included from ../include/linux/dma-mapping.h:8:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/dd.c:22:
In file included from ../include/linux/dma-map-ops.h:9:
In file included from ../include/linux/dma-mapping.h:8:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/dd.c:22:
In file included from ../include/linux/dma-map-ops.h:9:
In file included from ../include/linux/dma-mapping.h:8:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/dd.c:22:
In file included from ../include/linux/dma-map-ops.h:9:
In file included from ../include/linux/dma-mapping.h:8:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/dd.c:22:
In file included from ../include/linux/dma-map-ops.h:9:
In file included from ../include/linux/dma-mapping.h:8:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/dd.c:22:
In file included from ../include/linux/dma-map-ops.h:9:
In file included from ../include/linux/dma-mapping.h:8:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/dd.c:22:
In file included from ../include/linux/dma-map-ops.h:9:
In file included from ../include/linux/dma-mapping.h:8:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      drivers/base/driver.o
7 warnings generated.
  CC      drivers/base/power/wakeup_stats.o
In file included from ../drivers/tty/tty_port.c:20:
In file included from ../include/linux/serdev.h:10:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_port.c:20:
In file included from ../include/linux/serdev.h:10:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_port.c:20:
In file included from ../include/linux/serdev.h:10:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_port.c:20:
In file included from ../include/linux/serdev.h:10:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_port.c:20:
In file included from ../include/linux/serdev.h:10:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_port.c:20:
In file included from ../include/linux/serdev.h:10:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_port.c:20:
In file included from ../include/linux/serdev.h:10:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      drivers/tty/tty_mutex.o
In file included from ../drivers/base/syscore.c:11:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/syscore.c:11:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/syscore.c:11:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/syscore.c:11:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/syscore.c:11:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/syscore.c:11:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/syscore.c:11:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      drivers/base/power/clock_ops.o
  CC      drivers/base/class.o
7 warnings generated.
  CC      drivers/tty/tty_ldsem.o
  CC      drivers/tty/tty_baudrate.o
In file included from ../drivers/base/power/clock_ops.c:10:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/power/clock_ops.c:10:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/power/clock_ops.c:10:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/power/clock_ops.c:10:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/power/clock_ops.c:10:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/power/clock_ops.c:10:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/power/clock_ops.c:10:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  AR      drivers/base/power/built-in.a
  CC      drivers/base/platform.o
  CC      drivers/tty/tty_jobctrl.o
In file included from ../drivers/base/class.c:19:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/class.c:19:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/class.c:19:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/class.c:19:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/class.c:19:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/class.c:19:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/class.c:19:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      drivers/tty/n_null.o
In file included from ../drivers/base/platform.c:15:
In file included from ../include/linux/of_irq.h:7:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/platform.c:15:
In file included from ../include/linux/of_irq.h:7:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer,7  warningcso generatedu.
nt) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/platform.c:15:
In file included from ../include/linux/of_irq.h:7:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/platform.c:15:
In file included from ../include/linux/of_irq.h:7:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/platform.c:15:
In file included from ../include/linux/of_irq.h:7:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/platform.c:15:
In file included from ../include/linux/of_irq.h:7:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/platform.c:15:
In file included from ../include/linux/of_irq.h:7:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      drivers/base/cpu.o
7 warnings generated.
  CC      drivers/base/firmware.o
  AR      drivers/block/built-in.a
  AR      drivers/misc/eeprom/built-in.a
  AR      drivers/misc/cb710/built-in.a
In file included from ../drivers/base/cpu.c:20:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/cpu.c:20:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/cpu.c:20:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/cpu.c:20:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/cpu.c:20:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/cpu.c:20:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/cpu.c:20:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AR      drivers/misc/lis3lv02d/built-in.a
  AR      drivers/misc/cardreader/built-in.a
  AR      drivers/misc/keba/built-in.a
  AR      drivers/tty/built-in.a
  AR      drivers/misc/built-in.a
  CC      drivers/base/init.o
  CC      drivers/mfd/syscon.o
7 warnings generated.
  CC      drivers/base/map.o
  CC      drivers/base/devres.o
In file included from ../drivers/mfd/syscon.c:15:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/mfd/syscon.c:15:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/mfd/syscon.c:15:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/mfd/syscon.c:15:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/mfd/syscon.c:15:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/mfd/syscon.c:15:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/mfd/syscon.c:15:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      drivers/base/attribute_container.o
7 warnings generated.
  AR      drivers/mfd/built-in.a
In file included from ../drivers/base/init.c:11:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/init.c:11:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/init.c:11:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/init.c:11:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/init.c:11:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/init.c:11:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/init.c:11:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AR      drivers/nfc/built-in.a
  AR      drivers/dax/hmem/built-in.a
  AR      drivers/dax/built-in.a
7 warnings generated.
  CC      drivers/base/transport_class.o
  AR      drivers/cxl/core/built-in.a
  AR      drivers/cxl/built-in.a
  AR      drivers/macintosh/built-in.a
  AR      drivers/scsi/built-in.a
  AR      drivers/nvme/common/built-in.a
  AR      drivers/nvme/host/built-in.a
  AR      drivers/nvme/target/built-in.a
  AR      drivers/nvme/built-in.a
  CC      drivers/base/topology.o
  CC      drivers/base/container.o
  CC      drivers/base/property.o
  CC      drivers/base/cacheinfo.o
  CC      drivers/base/swnode.o
In file included from ../drivers/base/topology.c:14:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/topology.c:14:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/topology.c:14:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/topology.c:14:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/topology.c:14:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/topology.c:14:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/topology.c:14:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../drivers/base/property.c:16:
In file included from ../include/linux/phy.h:16:
In file included from ../include/linux/ethtool.h:18:
In file included from ../include/linux/if_ether.h:19:
In file included from ../include/linux/skbuff.h:17:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/property.c:16:
In file included from ../include/linux/phy.h:16:
In file included from ../include/linux/ethtool.h:18:
In file included from ../include/linux/if_ether.h:19:
In file included from ../include/linux/skbuff.h:17:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/property.c:16:
In file included from ../include/linux/phy.h:16:
In file included from ../include/linux/ethtool.h:18:
In file included from ../include/linux/if_ether.h:19:
In file included from ../include/linux/skbuff.h:17:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/property.c:16:
In file included from ../include/linux/phy.h:16:
In file included from ../include/linux/ethtool.h:18:
In file included from ../include/linux/if_ether.h:19:
In file included from ../include/linux/skbuff.h:17:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/property.c:16:
In file included from ../include/linux/phy.h:16:
In file included from ../include/linux/ethtool.h:18:
In file included from ../include/linux/if_ether.h:19:
In file included from ../include/linux/skbuff.h:17:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/property.c:16:
In file included from ../include/linux/phy.h:16:
In file included from ../include/linux/ethtool.h:18:
In file included from ../include/linux/if_ether.h:19:
In file included from ../include/linux/skbuff.h:17:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/property.c:16:
In file included from ../include/linux/phy.h:16:
In file included from ../include/linux/ethtool.h:18:
In file included from ../include/linux/if_ether.h:19:
In file included from ../include/linux/skbuff.h:17:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      drivers/base/devtmpfs.o
  CC      drivers/spi/spi.o
  CC      drivers/spi/spi-dw-core.o
7 warnings generated.
  CC      drivers/base/pinctrl.o
In file included from ../drivers/base/devtmpfs.c:19:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/devtmpfs.c:19:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/devtmpfs.c:19:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/devtmpfs.c:19:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/devtmpfs.c:19:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/devtmpfs.c:19:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/devtmpfs.c:19:
In file included from ../include/linux/syscalls.h:94:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../drivers/spi/spi.c:12:
In file included from ../include/linux/dmaengine.h:12:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/spi/spi.c:12:
In file included from ../include/linux/dmaengine.h:12:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/spi/spi.c:12:
In file included from ../include/linux/dmaengine.h:12:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/spi/spi.c:12:
In file included from ../include/linux/dmaengine.h:12:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/spi/spi.c:12:
In file included from ../include/linux/dmaengine.h:12:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/spi/spi.c:12:
In file included from ../include/linux/dmaengine.h:12:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/spi/spi.c:12:
In file included from ../include/linux/dmaengine.h:12:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../drivers/spi/spi-dw-core.c:10:
In file included from ../include/linux/dma-mapping.h:8:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/spi/spi-dw-core.c:10:
In file included from ../include/linux/dma-mapping.h:8:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/spi/spi-dw-core.c:10:
In file included from ../include/linux/dma-mapping.h:8:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/spi/spi-dw-core.c:10:
In file included from ../include/linux/dma-mapping.h:8:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/spi/spi-dw-core.c:10:
In file included from ../include/linux/dma-mapping.h:8:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/spi/spi-dw-core.c:10:
In file included from ../include/linux/dma-mapping.h:8:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/spi/spi-dw-core.c:10:
In file included from ../include/linux/dma-mapping.h:8:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      drivers/spi/spi-dw-mmio.o
  CC      drivers/base/platform-msi.o
7 warnings generated.
  CC      drivers/base/arch_topology.o
7 warnings generated.
In file included from ../drivers/base/platform-msi.c:12:
In file included from ../include/linux/msi.h:24:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/platform-msi.c:12:
In file included from ../include/linux/msi.h:24:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/platform-msi.c:12:
In file included from ../include/linux/msi.h:24:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/platform-msi.c:12:
In file included from ../include/linux/msi.h:24:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/platform-msi.c:12:
In file included from ../include/linux/msi.h:24:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/platform-msi.c:12:
In file included from ../include/linux/msi.h:24:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/platform-msi.c:12:
In file included from ../include/linux/msi.h:24:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AR      drivers/net/phy/qcom/built-in.a
  AR      drivers/net/phy/built-in.a
In file included from ../drivers/spi/spi-dw-mmio.c:13:
In file included from ../include/linux/spi/spi.h:17:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/spi/spi-dw-mmio.c:13:
In file included from ../include/linux/spi/spi.h:17:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/spi/spi-dw-mmio.c:13:
In file included from ../include/linux/spi/spi.h:17:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/spi/spi-dw-mmio.c:13:
In file included from ../include/linux/spi/spi.h:17:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/spi/spi-dw-mmio.c:13:
In file included from ../include/linux/spi/spi.h:17:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/spi/spi-dw-mmio.c:13:
In file included from ../include/linux/spi/spi.h:17:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/spi/spi-dw-mmio.c:13:
In file included from ../include/linux/spi/spi.h:17:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AR      drivers/net/pse-pd/built-in.a
7 warnings generated.
  AR      drivers/net/mdio/built-in.a
  AR      drivers/net/pcs/built-in.a
  AR      drivers/firewire/built-in.a
  AR      drivers/net/built-in.a
7 warnings generated.
  AR      drivers/cdrom/built-in.a
  AR      drivers/auxdisplay/built-in.a
  AR      drivers/spi/built-in.a
  AR      drivers/usb/built-in.a
  AR      drivers/i2c/algos/built-in.a
  CC      drivers/i2c/busses/i2c-designware-common.o
  AR      drivers/i2c/muxes/built-in.a
  CC      drivers/i2c/i2c-boardinfo.o
  CC      drivers/i2c/i2c-core-base.o
  AR      drivers/base/built-in.a
  AR      drivers/i3c/built-in.a
  AR      drivers/media/i2c/built-in.a
  AR      drivers/media/tuners/built-in.a
  AR      drivers/media/rc/keymaps/built-in.a
  AR      drivers/media/rc/built-in.a
  AR      drivers/media/common/b2c2/built-in.a
  AR      drivers/media/common/saa7146/built-in.a
  AR      drivers/media/common/siano/built-in.a
  AR      drivers/media/common/v4l2-tpg/built-in.a
  AR      drivers/media/common/videobuf2/built-in.a
  AR      drivers/media/common/built-in.a
  AR      drivers/media/platform/allegro-dvt/built-in.a
  AR      drivers/media/platform/amlogic/meson-ge2d/built-in.a
  AR      drivers/media/platform/amlogic/built-in.a
In file included from ../drivers/i2c/busses/i2c-designware-common.c:18:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/i2c/busses/i2c-designware-common.c:18:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/i2c/busses/i2c-designware-common.c:18:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/i2c/busses/i2c-designware-common.c:18:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/i2c/busses/i2c-designware-common.c:18:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/i2c/busses/i2c-designware-common.c:18:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/i2c/busses/i2c-designware-common.c:18:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AR      drivers/media/platform/amphion/built-in.a
In file included from ../drivers/i2c/i2c-core-base.c:24:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/i2c/i2c-core-base.c:24:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/i2c/i2c-core-base.c:24:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/i2c/i2c-core-base.c:24:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/i2c/i2c-core-base.c:24:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/i2c/i2c-core-base.c:24:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/i2c/i2c-core-base.c:24:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AR      drivers/media/platform/aspeed/built-in.a
In file included from ../drivers/i2c/i2c-boardinfo.c:7:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/i2c/i2c-boardinfo.c:7:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/i2c/i2c-boardinfo.c:7:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/i2c/i2c-boardinfo.c:7:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/i2c/i2c-boardinfo.c:7:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/i2c/i2c-boardinfo.c:7:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/i2c/i2c-boardinfo.c:7:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AR      drivers/media/platform/atmel/built-in.a
  AR      drivers/media/platform/broadcom/built-in.a
  AR      drivers/media/platform/cadence/built-in.a
  AR      drivers/media/platform/chips-media/coda/built-in.a
  AR      drivers/media/platform/chips-media/wave5/built-in.a
  AR      drivers/media/platform/chips-media/built-in.a
7 warnings generated.
  CC      drivers/i2c/i2c-core-smbus.o
  AR      drivers/media/platform/imagination/built-in.a
  AR      drivers/media/platform/intel/built-in.a
7 warnings generated.
  AR      drivers/media/platform/marvell/built-in.a
  CC      drivers/i2c/busses/i2c-designware-master.o
  AR      drivers/media/platform/mediatek/jpeg/built-in.a
  AR      drivers/media/platform/mediatek/mdp/built-in.a
  AR      drivers/media/platform/mediatek/vcodec/common/built-in.a
  AR      drivers/media/platform/mediatek/vcodec/encoder/built-in.a
  AR      drivers/media/platform/mediatek/vcodec/decoder/built-in.a
  AR      drivers/media/platform/mediatek/vcodec/built-in.a
  AR      drivers/media/platform/mediatek/vpu/built-in.a
  AR      drivers/media/platform/mediatek/mdp3/built-in.a
  AR      drivers/media/platform/mediatek/built-in.a
  AR      drivers/media/platform/microchip/built-in.a
  AR      drivers/media/platform/nuvoton/built-in.a
  AR      drivers/media/platform/nvidia/tegra-vde/built-in.a
  AR      drivers/media/platform/nvidia/built-in.a
7 warnings generated.
  AR      drivers/media/platform/nxp/dw100/built-in.a
  CC      drivers/i2c/i2c-core-of.o
  AR      drivers/media/platform/nxp/imx-jpeg/built-in.a
  AR      drivers/media/platform/nxp/imx8-isi/built-in.a
  AR      drivers/media/platform/nxp/built-in.a
  AR      drivers/media/platform/qcom/camss/built-in.a
  AR      drivers/media/platform/qcom/venus/built-in.a
  AR      drivers/media/platform/qcom/built-in.a
  AR      drivers/media/platform/raspberrypi/pisp_be/built-in.a
  AR      drivers/media/platform/raspberrypi/rp1-cfe/built-in.a
In file included from ../drivers/i2c/busses/i2c-designware-master.c:16:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/i2c/busses/i2c-designware-master.c:16:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/i2c/busses/i2c-designware-master.c:16:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/i2c/busses/i2c-designware-master.c:16:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/i2c/busses/i2c-designware-master.c:16:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/i2c/busses/i2c-designware-master.c:16:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
  AR      drivers/media/platform/raspberrypi/built-in.a
In file included from ../drivers/i2c/busses/i2c-designware-master.c:16:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AR      drivers/media/platform/renesas/rcar-vin/built-in.a
  AR      drivers/media/platform/renesas/rzg2l-cru/built-in.a
  AR      drivers/media/platform/renesas/vsp1/built-in.a
  AR      drivers/media/platform/renesas/built-in.a
  AR      drivers/media/platform/rockchip/rga/built-in.a
In file included from ../drivers/i2c/i2c-core-smbus.c:15:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/i2c/i2c-core-smbus.c:15:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/i2c/i2c-core-smbus.c:15:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/i2c/i2c-core-smbus.c:15:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/i2c/i2c-core-smbus.c:15:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/i2c/i2c-core-smbus.c:15:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/i2c/i2c-core-smbus.c:15:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AR      drivers/media/platform/rockchip/rkisp1/built-in.a
  AR      drivers/media/platform/rockchip/built-in.a
  AR      drivers/media/platform/samsung/exynos-gsc/built-in.a
  AR      drivers/media/platform/samsung/exynos4-is/built-in.a
  AR      drivers/media/platform/samsung/s3c-camif/built-in.a
  AR      drivers/media/platform/samsung/s5p-g2d/built-in.a
7 warnings generated.
  AR      drivers/media/platform/samsung/s5p-jpeg/built-in.a
  CC      drivers/i2c/busses/i2c-designware-platdrv.o
  AR      drivers/media/platform/samsung/s5p-mfc/built-in.a
  AR      drivers/media/platform/samsung/built-in.a
  AR      drivers/media/platform/st/sti/bdisp/built-in.a
7 warnings generated.
  AR      drivers/media/platform/st/sti/c8sectpfe/built-in.a
  AR      drivers/media/platform/st/sti/delta/built-in.a
  AR      drivers/media/platform/sunxi/sun4i-csi/built-in.a
  AR      drivers/media/platform/st/sti/hva/built-in.a
  AR      drivers/media/platform/sunxi/sun6i-csi/built-in.a
  AR      drivers/media/platform/st/stm32/built-in.a
  AR      drivers/media/platform/sunxi/sun6i-mipi-csi2/built-in.a
  AR      drivers/media/platform/st/built-in.a
  AR      drivers/media/platform/sunxi/sun8i-a83t-mipi-csi2/built-in.a
  CC      drivers/i2c/i2c-dev.o
  AR      drivers/media/platform/sunxi/sun8i-di/built-in.a
  AR      drivers/media/platform/sunxi/sun8i-rotate/built-in.a
  AR      drivers/media/platform/sunxi/built-in.a
  AR      drivers/media/platform/ti/am437x/built-in.a
In file included from ../drivers/i2c/i2c-core-of.c:14:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/i2c/i2c-core-of.c:14:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/i2c/i2c-core-of.c:14:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/i2c/i2c-core-of.c:14:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/i2c/i2c-core-of.c:14:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/i2c/i2c-core-of.c:14:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/i2c/i2c-core-of.c:14:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AR      drivers/media/platform/ti/cal/built-in.a
  AR      drivers/media/platform/ti/vpe/built-in.a
  AR      drivers/media/platform/ti/davinci/built-in.a
  AR      drivers/media/platform/ti/j721e-csi2rx/built-in.a
  AR      drivers/media/platform/ti/omap/built-in.a
  AR      drivers/media/platform/ti/omap3isp/built-in.a
  AR      drivers/media/platform/ti/built-in.a
  AR      drivers/media/platform/verisilicon/built-in.a
  AR      drivers/media/platform/via/built-in.a
  AR      drivers/media/platform/xilinx/built-in.a
7 warnings generated.
  AR      drivers/media/platform/built-in.a
  AR      drivers/ptp/built-in.a
In file included from ../drivers/i2c/busses/i2c-designware-platdrv.c:17:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/i2c/busses/i2c-designware-platdrv.c:17:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/i2c/busses/i2c-designware-platdrv.c:17:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/i2c/busses/i2c-designware-platdrv.c:17:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/i2c/busses/i2c-designware-platdrv.c:17:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/i2c/busses/i2c-designware-platdrv.c:17:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/i2c/busses/i2c-designware-platdrv.c:17:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AR      drivers/media/pci/ttpci/built-in.a
  AR      drivers/media/usb/b2c2/built-in.a
  AR      drivers/media/pci/b2c2/built-in.a
  AR      drivers/media/usb/dvb-usb/built-in.a
  AR      drivers/media/pci/pluto2/built-in.a
  AR      drivers/media/usb/dvb-usb-v2/built-in.a
  AR      drivers/media/usb/s2255/built-in.a
  AR      drivers/media/pci/dm1105/built-in.a
  AR      drivers/media/pci/pt1/built-in.a
  AR      drivers/media/usb/siano/built-in.a
  AR      drivers/media/pci/pt3/built-in.a
  AR      drivers/media/usb/ttusb-budget/built-in.a
  AR      drivers/media/pci/mantis/built-in.a
  AR      drivers/media/usb/ttusb-dec/built-in.a
7 warnings generated.
  AR      drivers/media/pci/ngene/built-in.a
In file included from ../drivers/i2c/i2c-dev.c:24:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/i2c/i2c-dev.c:24:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/i2c/i2c-dev.c:24:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/i2c/i2c-dev.c:24:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/i2c/i2c-dev.c:24:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/i2c/i2c-dev.c:24:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
  AR      drivers/media/usb/built-in.a
In file included from ../drivers/i2c/i2c-dev.c:24:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AR      drivers/i2c/busses/built-in.a
  AR      drivers/media/pci/ddbridge/built-in.a
  AR      drivers/media/mmc/siano/built-in.a
  AR      drivers/media/pci/saa7146/built-in.a
  AR      drivers/media/firewire/built-in.a
  AR      drivers/media/mmc/built-in.a
  AR      drivers/media/pci/smipcie/built-in.a
  AR      drivers/media/spi/built-in.a
  AR      drivers/media/test-drivers/built-in.a
  AR      drivers/media/pci/netup_unidvb/built-in.a
  AR      drivers/media/pci/intel/ipu3/built-in.a
  CC      drivers/power/reset/syscon-reboot.o
  AR      drivers/mmc/built-in.a
  AR      drivers/media/pci/intel/ivsc/built-in.a
  AR      drivers/media/pci/intel/built-in.a
  AR      drivers/ufs/built-in.a
  AR      drivers/media/pci/built-in.a
  AR      drivers/firmware/arm_ffa/built-in.a
  AR      drivers/media/built-in.a
  AR      drivers/firmware/arm_scmi/built-in.a
  CC      drivers/clocksource/timer-of.o
  AR      drivers/firmware/broadcom/built-in.a
7 warnings generated.
  AR      drivers/firmware/cirrus/built-in.a
  AR      drivers/i2c/built-in.a
  AR      drivers/firmware/meson/built-in.a
  CC      drivers/of/base.o
  AR      drivers/firmware/microchip/built-in.a
  AR      drivers/firmware/efi/built-in.a
  AR      drivers/firmware/imx/built-in.a
  AR      drivers/firmware/psci/built-in.a
  AR      drivers/firmware/qcom/built-in.a
  AR      drivers/firmware/smccc/built-in.a
  AR      drivers/firmware/tegra/built-in.a
  AR      drivers/firmware/xilinx/built-in.a
  AR      drivers/firmware/built-in.a
  AR      drivers/platform/built-in.a
In file included from ../drivers/power/reset/syscon-reboot.c:9:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/power/reset/syscon-reboot.c:9:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/power/reset/syscon-reboot.c:9:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/power/reset/syscon-reboot.c:9:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/power/reset/syscon-reboot.c:9:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/power/reset/syscon-reboot.c:9:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/power/reset/syscon-reboot.c:9:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      drivers/of/cpu.o
In file included from ../drivers/clocksource/timer-of.c:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/clocksource/timer-of.c:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/clocksource/timer-of.c:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/clocksource/timer-of.c:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/clocksource/timer-of.c:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/clocksource/timer-of.c:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/clocksource/timer-of.c:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  AR      drivers/power/reset/built-in.a
  AR      drivers/power/built-in.a
  AR      drivers/hwtracing/intel_th/built-in.a
  AR      drivers/android/built-in.a
  CC      drivers/clocksource/timer-probe.o
7 warnings generated.
  CC      drivers/clocksource/dummy_timer.o
  CC      drivers/of/device.o
  CC      drivers/clocksource/timer-clint.o
In file included from ../drivers/clocksource/dummy_timer.c:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/clocksource/dummy_timer.c:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/clocksource/dummy_timer.c:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/clocksource/dummy_timer.c:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/clocksource/dummy_timer.c:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/clocksource/dummy_timer.c:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/clocksource/dummy_timer.c:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../drivers/clocksource/timer-clint.c:11:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/clocksource/timer-clint.c:11:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/clocksource/timer-clint.c:11:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/clocksource/timer-clint.c:11:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/clocksource/timer-clint.c:11:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/clocksource/timer-clint.c:11:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/clocksource/timer-clint.c:11:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../drivers/of/device.c:5:
In file included from ../include/linux/of_address.h:7:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/of/device.c:5:
In file included from ../include/linux/of_address.h:7:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/of/device.c:5:
In file included from ../include/linux/of_address.h:7:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/of/device.c:5:
In file included from ../include/linux/of_address.h:7:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/of/device.c:5:
In file included from ../include/linux/of_address.h:7:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/of/device.c:5:
In file included from ../include/linux/of_address.h:7:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/of/device.c:5:
In file included from ../include/linux/of_address.h:7:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      drivers/of/module.o
7 warnings generated.
7 warnings generated.
  CC      drivers/of/platform.o
  CC      drivers/of/property.o
In file included from ../drivers/clocksource/timer-probe.c:9:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/clocksource/timer-probe.c:9:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/clocksource/timer-probe.c:9:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/clocksource/timer-probe.c:9:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/clocksource/timer-probe.c:9:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/clocksource/timer-probe.c:9:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/clocksource/timer-probe.c:9:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  AR      drivers/clocksource/built-in.a
  CC      drivers/of/kobj.o
In file included from ../drivers/of/property.c:25:
In file included from ../include/linux/of_address.h:7:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/of/property.c:25:
In file included from ../include/linux/of_address.h:7:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/of/property.c:25:
In file included from ../include/linux/of_address.h:7:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/of/property.c:25:
In file included from ../include/linux/of_address.h:7:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/of/property.c:25:
In file included from ../include/linux/of_address.h:7:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/of/property.c:25:
In file included from ../include/linux/of_address.h:7:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/of/property.c:25:
In file included from ../include/linux/of_address.h:7:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      drivers/of/fdt.o
In file included from ../drivers/of/platform.c:14:
In file included from ../include/linux/amba/bus.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/of/platform.c:14:
In file included from ../include/linux/amba/bus.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/of/platform.c:14:
In file included from ../include/linux/amba/bus.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/of/platform.c:14:
In file included from ../include/linux/amba/bus.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/of/platform.c:14:
In file included from ../include/linux/amba/bus.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/of/platform.c:14:
In file included from ../include/linux/amba/bus.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/of/platform.c:14:
In file included from ../include/linux/amba/bus.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  DTC     drivers/of/empty_root.dtb
  CC      drivers/of/fdt_address.o
7 warnings generated.
  CC      drivers/of/address.o
7 warnings generated.
  CC      drivers/of/irq.o
In file included from ../drivers/of/fdt.c:12:
In file included from ../include/linux/crash_dump.h:5:
In file included from ../include/linux/kexec.h:20:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/of/fdt.c:12:
In file included from ../include/linux/crash_dump.h:5:
In file included from ../include/linux/kexec.h:20:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/of/fdt.c:12:
In file included from ../include/linux/crash_dump.h:5:
In file included from ../include/linux/kexec.h:20:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/of/fdt.c:12:
In file included from ../include/linux/crash_dump.h:5:
In file included from ../include/linux/kexec.h:20:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/of/fdt.c:12:
In file included from ../include/linux/crash_dump.h:5:
In file included from ../include/linux/kexec.h:20:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/of/fdt.c:12:
In file included from ../include/linux/crash_dump.h:5:
In file included from ../include/linux/kexec.h:20:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/of/fdt.c:12:
In file included from ../include/linux/crash_dump.h:5:
In file included from ../include/linux/kexec.h:20:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      drivers/of/of_reserved_mem.o
7 warnings generated.
  WRAP    drivers/of/empty_root.dtb.S
  AS      drivers/of/empty_root.dtb.o
In file included from ../drivers/of/address.c:6:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/of/address.c:6:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/of/address.c:6:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/of/address.c:6:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/of/address.c:6:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/of/address.c:6:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/of/address.c:6:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../drivers/of/irq.c:24:
In file included from ../include/linux/of_irq.h:7:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/of/irq.c:24:
In file included from ../include/linux/of_irq.h:7:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/of/irq.c:24:
In file included from ../include/linux/of_irq.h:7:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/of/irq.c:24:
In file included from ../include/linux/of_irq.h:7:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/of/irq.c:24:
In file included from ../include/linux/of_irq.h:7:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/of/irq.c:24:
In file included from ../include/linux/of_irq.h:7:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/of/irq.c:24:
In file included from ../include/linux/of_irq.h:7:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
7 warnings generated.
  AR      drivers/of/built-in.a
  AR      drivers/built-in.a
  AR      built-in.a
  AR      vmlinux.a
  LD      vmlinux.o
  OBJCOPY modules.builtin.modinfo
  GEN     modules.builtin
  MODPOST vmlinux.symvers
  UPD     include/generated/utsversion.h
  CC      init/version-timestamp.o
  LD      vmlinux
  NM      System.map
  OBJCOPY arch/riscv/boot/Image
  Kernel: arch/riscv/boot/Image is ready
  AS      arch/riscv/boot/loader.o
  LDS     arch/riscv/boot/loader.lds
  Kernel: arch/riscv/boot/loader is ready
  OBJCOPY arch/riscv/boot/loader.bin
  Kernel: arch/riscv/boot/loader.bin is ready
make[1]: Leaving directory '/tmp/kci/linux/build'
make: Leaving directory '/tmp/kci/linux'