Hi Peter, FYI, the error/warning still remains. tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 933174ae28ba72ab8de5b35cb7c98fc211235096 commit: 776f22913b8e50011004c6ae43004711dab7efa5 sched/clock: Make local_clock() noinstr date: 4 months ago config: x86_64-randconfig-x076-20230524 compiler: gcc-11 (Debian 11.3.0-12) 11.3.0 reproduce (this is a W=1 build): # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=776f22913b8e50011004c6ae43004711dab7efa5 git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 776f22913b8e50011004c6ae43004711dab7efa5 # 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 | Closes: https://lore.kernel.org/oe-kbuild-all/202305251332.tLJvrr7e-lkp@intel.com/ All warnings (new ones prefixed by >>): vmlinux.o: warning: objtool: xen_sched_clock+0x34: call to preempt_schedule_notrace_thunk() leaves .noinstr.text section vmlinux.o: warning: objtool: native_sched_clock+0xda: call to preempt_schedule_notrace_thunk() leaves .noinstr.text section vmlinux.o: warning: objtool: kvm_clock_read+0x1d: call to preempt_schedule_notrace_thunk() leaves .noinstr.text section >> vmlinux.o: warning: objtool: local_clock+0xa6: call to preempt_schedule_notrace_thunk() leaves .noinstr.text section vmlinux.o: warning: objtool: enter_from_user_mode+0xba: call to preempt_count_add() leaves .noinstr.text section vmlinux.o: warning: objtool: syscall_enter_from_user_mode+0x108: call to preempt_count_add() leaves .noinstr.text section vmlinux.o: warning: objtool: syscall_enter_from_user_mode_prepare+0xdc: call to preempt_count_add() leaves .noinstr.text section vmlinux.o: warning: objtool: irqentry_enter_from_user_mode+0xba: call to preempt_count_add() leaves .noinstr.text section objdump-func vmlinux.o local_clock: 0000 0000000000003b40 : 0000 3b40: eb 1e jmp 3b60 0002 3b42: e8 00 00 00 00 call 3b47 3b43: R_X86_64_PLT32 sched_clock-0x4 0007 3b47: 48 03 05 00 00 00 00 add 0x0(%rip),%rax # 3b4e 3b4a: R_X86_64_PC32 __sched_clock_offset-0x4 000e 3b4e: 49 89 c0 mov %rax,%r8 0011 3b51: 4c 89 c0 mov %r8,%rax 0014 3b54: 31 d2 xor %edx,%edx 0016 3b56: 31 c9 xor %ecx,%ecx 0018 3b58: 31 f6 xor %esi,%esi 001a 3b5a: 31 ff xor %edi,%edi 001c 3b5c: 45 31 c0 xor %r8d,%r8d 001f 3b5f: c3 ret 0020 3b60: ff 05 00 00 00 00 incl 0x0(%rip) # 3b66 3b62: R_X86_64_PC32 pcpu_hot+0x4 0026 3b66: e8 00 00 00 00 call 3b6b 3b67: R_X86_64_PLT32 sched_clock-0x4 002b 3b6b: 48 2b 05 00 00 00 00 sub 0x0(%rip),%rax # 3b72 3b6e: R_X86_64_PC32 sched_clock_data-0x4 0032 3b72: 48 8b 15 00 00 00 00 mov 0x0(%rip),%rdx # 3b79 3b75: R_X86_64_PC32 .data..read_mostly+0xd34 0039 3b79: 48 89 c1 mov %rax,%rcx 003c 3b7c: b8 00 00 00 00 mov $0x0,%eax 0041 3b81: 48 0f 48 c8 cmovs %rax,%rcx 0045 3b85: 48 03 15 00 00 00 00 add 0x0(%rip),%rdx # 3b8c 3b88: R_X86_64_PC32 sched_clock_data+0x4 004c 3b8c: 48 8b 05 00 00 00 00 mov 0x0(%rip),%rax # 3b93 3b8f: R_X86_64_PC32 sched_clock_data+0xc 0053 3b93: 48 89 d7 mov %rdx,%rdi 0056 3b96: 48 89 d6 mov %rdx,%rsi 0059 3b99: 48 29 c7 sub %rax,%rdi 005c 3b9c: 4c 8d 04 11 lea (%rcx,%rdx,1),%r8 0060 3ba0: 48 85 ff test %rdi,%rdi 0063 3ba3: 7f 09 jg 3bae 0065 3ba5: 4c 89 c1 mov %r8,%rcx 0068 3ba8: 48 89 c6 mov %rax,%rsi 006b 3bab: 48 29 c1 sub %rax,%rcx 006e 3bae: 48 81 c2 d5 dc 32 00 add $0x32dcd5,%rdx 0075 3bb5: 48 89 c7 mov %rax,%rdi 0078 3bb8: 48 29 d7 sub %rdx,%rdi 007b 3bbb: 48 85 ff test %rdi,%rdi 007e 3bbe: 48 0f 4f d0 cmovg %rax,%rdx 0082 3bc2: 48 85 c9 test %rcx,%rcx 0085 3bc5: 4c 0f 4e c6 cmovle %rsi,%r8 0089 3bc9: 49 39 d0 cmp %rdx,%r8 008c 3bcc: 4c 0f 49 c2 cmovns %rdx,%r8 0090 3bd0: 4c 0f b1 05 00 00 00 00 cmpxchg %r8,0x0(%rip) # 3bd8 3bd4: R_X86_64_PC32 sched_clock_data+0xc 0098 3bd8: 75 8c jne 3b66 009a 3bda: ff 0d 00 00 00 00 decl 0x0(%rip) # 3be0 3bdc: R_X86_64_PC32 pcpu_hot+0x4 00a0 3be0: 0f 85 6b ff ff ff jne 3b51 00a6 3be6: e8 00 00 00 00 call 3beb 3be7: R_X86_64_PLT32 preempt_schedule_notrace_thunk-0x4 00ab 3beb: e9 61 ff ff ff jmp 3b51 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki