arch/x86/entry/entry_64.S:1756: Warning: no instruction mnemonic suffix given and no register operands; using default for `sysret'
arch/x86/entry/entry_64.o: warning: objtool: .entry.text+0x151: stack state mismatch: cfa1=7+56 cfa2=7+40
kernel/printk/printk.c:2462:10: warning: 'sprintf' will always overflow; destination buffer has size 0, but format string expands to at least 33 [-Wfortify-source]
1 warning generated.
ld.lld: warning: cannot find entry symbol _start; not setting start address