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Date: Sat, 23 Jul 2022 04:28:27 +0800
From: kernel test robot <lkp@...el.com>
To: Peter Zijlstra <peterz@...radead.org>
Cc: kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org
Subject: [peterz-queue:sched/idle 18/37] vmlinux.o: warning: objtool:
intel_idle_ibrs+0x16: call to spec_ctrl_current() leaves .noinstr.text
section
tree: https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git sched/idle
head: 84fd27c4b216dc4083d0a62c61d4c48205ad0a28
commit: 2f33657142b2ba7f7193734e5de4fc37c409b6f6 [18/37] objtool/idle: Validate __cpuidle code as noinstr
config: x86_64-randconfig-a016-20220718 (https://download.01.org/0day-ci/archive/20220723/202207230401.YslgKIV1-lkp@intel.com/config)
compiler: gcc-11 (Debian 11.3.0-3) 11.3.0
reproduce (this is a W=1 build):
# https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git/commit/?id=2f33657142b2ba7f7193734e5de4fc37c409b6f6
git remote add peterz-queue https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git
git fetch --no-tags peterz-queue sched/idle
git checkout 2f33657142b2ba7f7193734e5de4fc37c409b6f6
# save the config file
mkdir build_dir && cp config build_dir/.config
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>
All warnings (new ones prefixed by >>):
vmlinux.o: warning: objtool: default_idle+0x4: call to mds_idle_clear_cpu_buffers() leaves .noinstr.text section
vmlinux.o: warning: objtool: mwait_idle+0x49: call to mds_idle_clear_cpu_buffers() leaves .noinstr.text section
>> vmlinux.o: warning: objtool: intel_idle_ibrs+0x16: call to spec_ctrl_current() leaves .noinstr.text section
vmlinux.o: warning: objtool: intel_idle_irq+0x46: call to current_set_polling_and_test() leaves .noinstr.text section
vmlinux.o: warning: objtool: intel_idle_s2idle+0x40: call to current_set_polling_and_test() leaves .noinstr.text section
vmlinux.o: warning: objtool: intel_idle+0x45: call to current_set_polling_and_test() leaves .noinstr.text section
objdump-func vmlinux.o intel_idle_ibrs:
0000 00000000000002a9 <intel_idle_ibrs>:
0000 2a9: f3 0f 1e fa endbr64
0004 2ad: 41 54 push %r12
0006 2af: 55 push %rbp
0007 2b0: 48 89 f5 mov %rsi,%rbp
000a 2b3: 53 push %rbx
000b 2b4: 48 63 da movslq %edx,%rbx
000e 2b7: 49 89 dc mov %rbx,%r12
0011 2ba: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 2bb: R_X86_64_NONE __sanitizer_cov_trace_pc-0x4
0016 2bf: e8 00 00 00 00 call 2c4 <intel_idle_ibrs+0x1b> 2c0: R_X86_64_PLT32 spec_ctrl_current-0x4
001b 2c4: 48 83 fb 0a cmp $0xa,%rbx
001f 2c8: 76 0f jbe 2d9 <intel_idle_ibrs+0x30>
0021 2ca: 48 89 de mov %rbx,%rsi
0024 2cd: 48 c7 c7 00 00 00 00 mov $0x0,%rdi 2d0: R_X86_64_32S .data+0x69c240
002b 2d4: e8 00 00 00 00 call 2d9 <intel_idle_ibrs+0x30> 2d5: R_X86_64_PLT32 __ubsan_handle_out_of_bounds-0x4
0030 2d9: 48 6b db 68 imul $0x68,%rbx,%rbx
0034 2dd: 0f b6 6c 1d 5b movzbl 0x5b(%rbp,%rbx,1),%ebp
0039 2e2: e9 00 00 00 00 jmp 2e7 <intel_idle_ibrs+0x3e> 2e3: R_X86_64_PC32 .altinstr_aux+0x16b2
003e 2e7: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 2e8: R_X86_64_NONE __sanitizer_cov_trace_pc-0x4
0043 2ec: eb 19 jmp 307 <intel_idle_ibrs+0x5e>
0045 2ee: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 2ef: R_X86_64_NONE __sanitizer_cov_trace_pc-0x4
004a 2f3: e8 00 00 00 00 call 2f8 <intel_idle_ibrs+0x4f> 2f4: R_X86_64_PC32 .text+0x81bd14
004f 2f8: 31 ff xor %edi,%edi
0051 2fa: 89 c3 mov %eax,%ebx
0053 2fc: 89 c6 mov %eax,%esi
0055 2fe: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 2ff: R_X86_64_NONE __sanitizer_cov_trace_const_cmp1-0x4
005a 303: 84 db test %bl,%bl
005c 305: 75 68 jne 36f <intel_idle_ibrs+0xc6>
005e 307: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 308: R_X86_64_NONE __sanitizer_cov_trace_pc-0x4
0063 30c: e9 00 00 00 00 jmp 311 <intel_idle_ibrs+0x68> 30d: R_X86_64_PC32 .altinstr_aux+0x16c4
0068 311: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 312: R_X86_64_NONE __sanitizer_cov_trace_pc-0x4
006d 316: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 317: R_X86_64_NONE __sanitizer_cov_trace_pc-0x4
0072 31b: 0f ae f0 mfence
0075 31e: 48 8b 04 25 00 00 00 00 mov 0x0,%rax 322: R_X86_64_32S current_task
007d 326: 0f ae 38 clflush (%rax)
0080 329: 0f ae f0 mfence
0083 32c: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 32d: R_X86_64_NONE __sanitizer_cov_trace_pc-0x4
0088 331: 31 d2 xor %edx,%edx
008a 333: 48 89 d1 mov %rdx,%rcx
008d 336: 48 8b 04 25 00 00 00 00 mov 0x0,%rax 33a: R_X86_64_32S current_task
0095 33e: 0f 01 c8 monitor %rax,%ecx,%edx
0098 341: 48 8b 18 mov (%rax),%rbx
009b 344: 31 ff xor %edi,%edi
009d 346: 48 c1 eb 03 shr $0x3,%rbx
00a1 34a: 83 e3 01 and $0x1,%ebx
00a4 34d: 48 89 de mov %rbx,%rsi
00a7 350: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 351: R_X86_64_NONE __sanitizer_cov_trace_const_cmp8-0x4
00ac 355: 48 85 db test %rbx,%rbx
00af 358: 75 15 jne 36f <intel_idle_ibrs+0xc6>
00b1 35a: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 35b: R_X86_64_NONE __sanitizer_cov_trace_pc-0x4
00b6 35f: e8 00 00 00 00 call 364 <intel_idle_ibrs+0xbb> 360: R_X86_64_PC32 .text+0x81bd34
00bb 364: b9 01 00 00 00 mov $0x1,%ecx
00c0 369: 48 89 e8 mov %rbp,%rax
00c3 36c: 0f 01 c9 mwait %eax,%ecx
00c6 36f: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 370: R_X86_64_NONE __sanitizer_cov_trace_pc-0x4
00cb 374: e8 00 00 00 00 call 379 <intel_idle_ibrs+0xd0> 375: R_X86_64_PC32 .text+0x81bcd6
00d0 379: 5b pop %rbx
00d1 37a: 44 89 e0 mov %r12d,%eax
00d4 37d: 5d pop %rbp
00d5 37e: 41 5c pop %r12
00d7 380: e9 00 00 00 00 jmp 385 <intel_idle_irq> 381: R_X86_64_PLT32 __x86_return_thunk-0x4
--
0-DAY CI Kernel Test Service
https://01.org/lkp
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