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Message-ID: <202303290127.5NjnWVWg-lkp@intel.com>
Date: Wed, 29 Mar 2023 02:05:25 +0800
From: kernel test robot <lkp@...el.com>
To: Peter Zijlstra <peterz@...radead.org>
Cc: oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
Ingo Molnar <mingo@...nel.org>
Subject: vmlinux.o: warning: objtool: local_clock+0xaa: call to
preempt_schedule_notrace_thunk() leaves .noinstr.text section
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 3a93e40326c8f470e71d20b4c42d36767450f38f
commit: 776f22913b8e50011004c6ae43004711dab7efa5 sched/clock: Make local_clock() noinstr
date: 8 weeks ago
config: x86_64-buildonly-randconfig-r004-20230327 (https://download.01.org/0day-ci/archive/20230329/202303290127.5NjnWVWg-lkp@intel.com/config)
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=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 <lkp@...el.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202303290127.5NjnWVWg-lkp@intel.com/
All warnings (new ones prefixed by >>):
vmlinux.o: warning: objtool: native_sched_clock+0x97: call to preempt_schedule_notrace_thunk() leaves .noinstr.text section
>> vmlinux.o: warning: objtool: local_clock+0xaa: call to preempt_schedule_notrace_thunk() leaves .noinstr.text section
vmlinux.o: warning: objtool: enter_from_user_mode+0x30: call to preempt_count_add() leaves .noinstr.text section
vmlinux.o: warning: objtool: syscall_enter_from_user_mode+0x66: call to preempt_count_add() leaves .noinstr.text section
vmlinux.o: warning: objtool: syscall_enter_from_user_mode_prepare+0x38: call to preempt_count_add() leaves .noinstr.text section
vmlinux.o: warning: objtool: irqentry_enter_from_user_mode+0x30: call to preempt_count_add() leaves .noinstr.text section
objdump-func vmlinux.o local_clock:
0000 0000000000002800 <local_clock>:
0000 2800: f3 0f 1e fa endbr64
0004 2804: eb 1e jmp 2824 <local_clock+0x24>
0006 2806: e8 00 00 00 00 call 280b <local_clock+0xb> 2807: R_X86_64_PLT32 sched_clock-0x4
000b 280b: 48 03 05 00 00 00 00 add 0x0(%rip),%rax # 2812 <local_clock+0x12> 280e: R_X86_64_PC32 __sched_clock_offset-0x4
0012 2812: 49 89 c0 mov %rax,%r8
0015 2815: 4c 89 c0 mov %r8,%rax
0018 2818: 31 d2 xor %edx,%edx
001a 281a: 31 c9 xor %ecx,%ecx
001c 281c: 31 f6 xor %esi,%esi
001e 281e: 31 ff xor %edi,%edi
0020 2820: 45 31 c0 xor %r8d,%r8d
0023 2823: c3 ret
0024 2824: ff 05 00 00 00 00 incl 0x0(%rip) # 282a <local_clock+0x2a> 2826: R_X86_64_PC32 pcpu_hot+0x4
002a 282a: e8 00 00 00 00 call 282f <local_clock+0x2f> 282b: R_X86_64_PLT32 sched_clock-0x4
002f 282f: 48 2b 05 00 00 00 00 sub 0x0(%rip),%rax # 2836 <local_clock+0x36> 2832: R_X86_64_PC32 sched_clock_data-0x4
0036 2836: 48 8b 15 00 00 00 00 mov 0x0(%rip),%rdx # 283d <local_clock+0x3d> 2839: R_X86_64_PC32 .data..read_mostly+0x25b4
003d 283d: 48 89 c1 mov %rax,%rcx
0040 2840: b8 00 00 00 00 mov $0x0,%eax
0045 2845: 48 0f 48 c8 cmovs %rax,%rcx
0049 2849: 48 03 15 00 00 00 00 add 0x0(%rip),%rdx # 2850 <local_clock+0x50> 284c: R_X86_64_PC32 sched_clock_data+0x4
0050 2850: 48 8b 05 00 00 00 00 mov 0x0(%rip),%rax # 2857 <local_clock+0x57> 2853: R_X86_64_PC32 sched_clock_data+0xc
0057 2857: 48 89 d7 mov %rdx,%rdi
005a 285a: 48 89 d6 mov %rdx,%rsi
005d 285d: 48 29 c7 sub %rax,%rdi
0060 2860: 4c 8d 04 11 lea (%rcx,%rdx,1),%r8
0064 2864: 48 85 ff test %rdi,%rdi
0067 2867: 7f 09 jg 2872 <local_clock+0x72>
0069 2869: 4c 89 c1 mov %r8,%rcx
006c 286c: 48 89 c6 mov %rax,%rsi
006f 286f: 48 29 c1 sub %rax,%rcx
0072 2872: 48 81 c2 00 09 3d 00 add $0x3d0900,%rdx
0079 2879: 48 89 c7 mov %rax,%rdi
007c 287c: 48 29 d7 sub %rdx,%rdi
007f 287f: 48 85 ff test %rdi,%rdi
0082 2882: 48 0f 4f d0 cmovg %rax,%rdx
0086 2886: 48 85 c9 test %rcx,%rcx
0089 2889: 4c 0f 4e c6 cmovle %rsi,%r8
008d 288d: 49 39 d0 cmp %rdx,%r8
0090 2890: 4c 0f 49 c2 cmovns %rdx,%r8
0094 2894: 4c 0f b1 05 00 00 00 00 cmpxchg %r8,0x0(%rip) # 289c <local_clock+0x9c> 2898: R_X86_64_PC32 sched_clock_data+0xc
009c 289c: 75 8c jne 282a <local_clock+0x2a>
009e 289e: ff 0d 00 00 00 00 decl 0x0(%rip) # 28a4 <local_clock+0xa4> 28a0: R_X86_64_PC32 pcpu_hot+0x4
00a4 28a4: 0f 85 6b ff ff ff jne 2815 <local_clock+0x15>
00aa 28aa: e8 00 00 00 00 call 28af <local_clock+0xaf> 28ab: R_X86_64_PLT32 preempt_schedule_notrace_thunk-0x4
00af 28af: e9 61 ff ff ff jmp 2815 <local_clock+0x15>
00b4 28b4: 66 2e 0f 1f 84 00 00 00 00 00 cs nopw 0x0(%rax,%rax,1)
00be 28be: 66 90 xchg %ax,%ax
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests
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