Hi Borislav, FYI, the error/warning still remains. tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 0a71553536d270e988580a3daa9fc87535908221 commit: 2028a255f4df3af9e759f01f958d3237f825f256 x86/extable: Annotate ex_handler_msr_mce() as a dead end date: 8 months ago config: x86_64-rhel-8.3-syz compiler: gcc-11 (Debian 11.3.0-8) 11.3.0 reproduce (this is a W=1 build): # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=2028a255f4df3af9e759f01f958d3237f825f256 git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 2028a255f4df3af9e759f01f958d3237f825f256 # save the config file mkdir build_dir && cp config build_dir/.config make W=1 O=build_dir ARCH=x86_64 olddefconfig make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot All warnings (new ones prefixed by >>): ld: warning: arch/x86/power/hibernate_asm_64.o: missing .note.GNU-stack section implies executable stack ld: NOTE: This behaviour is deprecated and will be removed in a future version of the linker >> vmlinux.o: warning: objtool: resume_play_dead+0x22: unreachable instruction ld: warning: vmlinux.o: requires executable stack (because the .note.GNU-stack section is executable) ld: warning: .tmp_vmlinux.btf has a LOAD segment with RWX permissions ld: warning: vmlinux.o: requires executable stack (because the .note.GNU-stack section is executable) ld: warning: .tmp_vmlinux.kallsyms1 has a LOAD segment with RWX permissions ld: warning: vmlinux.o: requires executable stack (because the .note.GNU-stack section is executable) ld: warning: .tmp_vmlinux.kallsyms2 has a LOAD segment with RWX permissions ld: warning: vmlinux.o: requires executable stack (because the .note.GNU-stack section is executable) ld: warning: vmlinux has a LOAD segment with RWX permissions objdump-func vmlinux.o resume_play_dead: 0000 00000000019f6c00 : 0000 19f6c00: f3 0f 1e fa endbr64 0004 19f6c04: e8 00 00 00 00 call 19f6c09 19f6c05: R_X86_64_PLT32 __fentry__-0x4 0009 19f6c09: e8 00 00 00 00 call 19f6c0e 19f6c0a: R_X86_64_PLT32 __sanitizer_cov_trace_pc-0x4 000e 19f6c0e: e8 00 00 00 00 call 19f6c13 19f6c0f: R_X86_64_PLT32 play_dead_common-0x4 0013 19f6c13: bf 05 00 00 00 mov $0x5,%edi 0018 19f6c18: e8 00 00 00 00 call 19f6c1d 19f6c19: R_X86_64_PLT32 tboot_shutdown-0x4 001d 19f6c1d: e8 00 00 00 00 call 19f6c22 19f6c1e: R_X86_64_PLT32 hlt_play_dead-0x4 0022 19f6c22: c3 ret 0023 19f6c23: 66 66 2e 0f 1f 84 00 00 00 00 00 data16 cs nopw 0x0(%rax,%rax,1) 002e 19f6c2e: 66 90 xchg %ax,%ax -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests