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Date: Mon, 26 Sep 2022 14:48:32 +0800
From: kernel test robot <lkp@...el.com>
To: Frederic Weisbecker <frederic@...nel.org>
Cc: kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
"Paul E. McKenney" <paulmck@...nel.org>,
Nicolas Saenz Julienne <nsaenzju@...hat.com>
Subject: vmlinux.o: warning: objtool: enter_from_user_mode+0xae: call to
preempt_count_add() leaves .noinstr.text section
Hi Frederic,
FYI, the error/warning still remains.
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: f76349cf41451c5c42a99f18a9163377e4b364ff
commit: 171476775d32a40bfebf83250136c19b2e842672 context_tracking: Convert state to atomic_t
date: 3 months ago
config: x86_64-buildonly-randconfig-r001-20220926
compiler: gcc-11 (Debian 11.3.0-5) 11.3.0
reproduce (this is a W=1 build):
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=171476775d32a40bfebf83250136c19b2e842672
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 171476775d32a40bfebf83250136c19b2e842672
# 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 >>):
ld: warning: arch/x86/lib/csum-copy_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: enter_from_user_mode+0xae: call to preempt_count_add() leaves .noinstr.text section
>> vmlinux.o: warning: objtool: syscall_enter_from_user_mode+0xe4: call to preempt_count_add() leaves .noinstr.text section
>> vmlinux.o: warning: objtool: syscall_enter_from_user_mode_prepare+0xb1: call to preempt_count_add() leaves .noinstr.text section
>> vmlinux.o: warning: objtool: irqentry_enter_from_user_mode+0xae: call to preempt_count_add() leaves .noinstr.text section
vmlinux.o: warning: objtool: dn_bind.cold+0x11: relocation to !ENDBR: dn_bind+0x1bd
vmlinux.o: warning: objtool: dn_route_input_slow.cold+0x11: relocation to !ENDBR: dn_route_input_slow+0x639
vmlinux.o: warning: objtool: dn_route_input_slow.cold+0x3a: relocation to !ENDBR: dn_route_input_slow+0x113
vmlinux.o: warning: objtool: dn_route_output_slow.cold+0x11: relocation to !ENDBR: dn_route_output_slow+0x13d
vmlinux.o: warning: objtool: dn_route_output_slow.cold+0x3a: relocation to !ENDBR: dn_route_output_slow+0x95d
vmlinux.o: warning: objtool: dn_route_output_slow.cold+0x63: relocation to !ENDBR: dn_route_output_slow+0xbfe
vmlinux.o: warning: objtool: dn_route_output_slow.cold+0x8c: relocation to !ENDBR: dn_route_output_slow+0x1d6
vmlinux.o: warning: objtool: dn_route_output_slow.cold+0xf3: relocation to !ENDBR: dn_route_output_slow+0x745
vmlinux.o: warning: objtool: dn_route_output_slow.cold+0x11c: relocation to !ENDBR: dn_route_output_slow+0x5be
objdump-func vmlinux.o enter_from_user_mode:
0000 0000000000002700 <enter_from_user_mode>:
0000 2700: f3 0f 1e fa endbr64
0004 2704: 55 push %rbp
0005 2705: 48 89 e5 mov %rsp,%rbp
0008 2708: 53 push %rbx
0009 2709: 9c pushf
000a 270a: 5a pop %rdx
000b 270b: 48 8b 0d 00 00 00 00 mov 0x0(%rip),%rcx # 2712 <enter_from_user_mode+0x12> 270e: R_X86_64_PC32 boot_cpu_data+0x3c
0012 2712: b8 00 44 04 00 mov $0x44400,%eax
0017 2717: 48 0f ba e1 34 bt $0x34,%rcx
001c 271c: 72 1f jb 273d <enter_from_user_mode+0x3d>
001e 271e: 48 8b 05 00 00 00 00 mov 0x0(%rip),%rax # 2725 <enter_from_user_mode+0x25> 2721: R_X86_64_PC32 boot_cpu_data+0x3c
0025 2725: 48 c1 e8 10 shr $0x10,%rax
0029 2729: 83 e0 01 and $0x1,%eax
002c 272c: 3c 01 cmp $0x1,%al
002e 272e: 48 19 c0 sbb %rax,%rax
0031 2731: 48 25 00 00 fc ff and $0xfffffffffffc0000,%rax
0037 2737: 48 05 00 44 04 00 add $0x44400,%rax
003d 273d: 48 85 c2 test %rax,%rdx
0040 2740: 0f 85 91 00 00 00 jne 27d7 <enter_from_user_mode+0xd7>
0046 2746: f6 87 88 00 00 00 03 testb $0x3,0x88(%rdi)
004d 274d: 0f 84 95 00 00 00 je 27e8 <enter_from_user_mode+0xe8>
0053 2753: 48 8b 04 25 00 00 00 00 mov 0x0,%rax 2757: R_X86_64_32S cpu_current_top_of_stack
005b 275b: 48 29 e0 sub %rsp,%rax
005e 275e: 48 3d ff 3f 00 00 cmp $0x3fff,%rax
0064 2764: 0f 87 8d 00 00 00 ja 27f7 <enter_from_user_mode+0xf7>
006a 276a: 48 8b 04 25 00 00 00 00 mov 0x0,%rax 276e: R_X86_64_32S current_task
0072 2772: 48 8b 40 20 mov 0x20(%rax),%rax
0076 2776: 48 05 58 3f 00 00 add $0x3f58,%rax
007c 277c: 48 39 c7 cmp %rax,%rdi
007f 277f: 75 70 jne 27f1 <enter_from_user_mode+0xf1>
0081 2781: 66 90 xchg %ax,%ax
0083 2783: 66 90 xchg %ax,%ax
0085 2785: 90 nop
0086 2786: 90 nop
0087 2787: 48 8b 5d f8 mov -0x8(%rbp),%rbx
008b 278b: c9 leave
008c 278c: 31 c0 xor %eax,%eax
008e 278e: 31 d2 xor %edx,%edx
0090 2790: 31 c9 xor %ecx,%ecx
0092 2792: 31 ff xor %edi,%edi
0094 2794: c3 ret
0095 2795: 66 90 xchg %ax,%ax
0097 2797: 90 nop
0098 2798: 0f 0b ud2
009a 279a: 90 nop
009b 279b: eb e6 jmp 2783 <enter_from_user_mode+0x83>
009d 279d: bf 02 00 00 00 mov $0x2,%edi
00a2 27a2: e8 00 00 00 00 call 27a7 <enter_from_user_mode+0xa7> 27a3: R_X86_64_PLT32 __ct_user_exit-0x4
00a7 27a7: eb dc jmp 2785 <enter_from_user_mode+0x85>
00a9 27a9: bf 01 00 00 00 mov $0x1,%edi
00ae 27ae: e8 00 00 00 00 call 27b3 <enter_from_user_mode+0xb3> 27af: R_X86_64_PLT32 preempt_count_add-0x4
00b3 27b3: 8b 1d 00 00 00 00 mov 0x0(%rip),%ebx # 27b9 <enter_from_user_mode+0xb9> 27b5: R_X86_64_PC32 context_tracking+0x4
00b9 27b9: bf 01 00 00 00 mov $0x1,%edi
00be 27be: e8 00 00 00 00 call 27c3 <enter_from_user_mode+0xc3> 27bf: R_X86_64_PLT32 preempt_count_sub-0x4
00c3 27c3: 8b 05 00 00 00 00 mov 0x0(%rip),%eax # 27c9 <enter_from_user_mode+0xc9> 27c5: R_X86_64_PC32 __preempt_count-0x4
00c9 27c9: 85 c0 test %eax,%eax
00cb 27cb: 74 33 je 2800 <enter_from_user_mode+0x100>
00cd 27cd: 83 e3 03 and $0x3,%ebx
00d0 27d0: 83 fb 02 cmp $0x2,%ebx
00d3 27d3: 75 c2 jne 2797 <enter_from_user_mode+0x97>
00d5 27d5: eb ac jmp 2783 <enter_from_user_mode+0x83>
00d7 27d7: 90 nop
00d8 27d8: 0f 0b ud2
00da 27da: 90 nop
00db 27db: f6 87 88 00 00 00 03 testb $0x3,0x88(%rdi)
00e2 27e2: 0f 85 6b ff ff ff jne 2753 <enter_from_user_mode+0x53>
00e8 27e8: 90 nop
00e9 27e9: 0f 0b ud2
00eb 27eb: 90 nop
00ec 27ec: e9 62 ff ff ff jmp 2753 <enter_from_user_mode+0x53>
00f1 27f1: 90 nop
00f2 27f2: 0f 0b ud2
00f4 27f4: 90 nop
00f5 27f5: eb 8a jmp 2781 <enter_from_user_mode+0x81>
00f7 27f7: 90 nop
00f8 27f8: 0f 0b ud2
00fa 27fa: 90 nop
00fb 27fb: e9 6a ff ff ff jmp 276a <enter_from_user_mode+0x6a>
0100 2800: e8 00 00 00 00 call 2805 <enter_from_user_mode+0x105> 2801: R_X86_64_PLT32 __SCT__preempt_schedule-0x4
0105 2805: eb c6 jmp 27cd <enter_from_user_mode+0xcd>
0107 2807: 66 0f 1f 84 00 00 00 00 00 nopw 0x0(%rax,%rax,1)
--
0-DAY CI Kernel Test Service
https://01.org/lkp
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