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Message-ID: <202308301532.d7acf63e-oliver.sang@intel.com>
Date: Wed, 30 Aug 2023 15:17:56 +0800
From: kernel test robot <oliver.sang@...el.com>
To: Josh Poimboeuf <jpoimboe@...nel.org>
CC: <oe-lkp@...ts.linux.dev>, <lkp@...el.com>,
<linux-kernel@...r.kernel.org>, <oliver.sang@...el.com>
Subject: [linus:master] [objtool] 6342a20efb:
WARNING:at_arch/x86/kernel/alternative.c:#__apply_fineibt
Hello,
kernel test robot noticed "WARNING:at_arch/x86/kernel/alternative.c:#__apply_fineibt" on:
commit: 6342a20efbd8b70d169c325b2c27a8a8f96388d5 ("objtool: Add elf_create_section_pair()")
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master
[test failed on linus/master 7d2f353b2682dcfe5f9bc71e5b61d5b61770d98e]
[test failed on linux-next/master 6269320850097903b30be8f07a5c61d9f7592393]
in testcase: boot
compiler: clang-16
test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 16G
(please refer to attached dmesg/kmsg for entire log/backtrace)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <oliver.sang@...el.com>
| Closes: https://lore.kernel.org/oe-lkp/202308301532.d7acf63e-oliver.sang@intel.com
[ 1.953072][ T0] ------------[ cut here ]------------
[ 1.953439][ T0] no CFI hash found at: __call_sites+0x2bedc/0x2cbd0 ffffffffb2e29344 00 00 00 00 00
[ 1.955319][ T0] WARNING: CPU: 0 PID: 0 at arch/x86/kernel/alternative.c:912 __apply_fineibt (arch/x86/kernel/alternative.c:911 arch/x86/kernel/alternative.c:1012)
[ 1.957432][ T0] Modules linked in:
[ 1.958156][ T0] CPU: 0 PID: 0 Comm: swapper/0 Tainted: G T 6.4.0-rc2-00026-g6342a20efbd8 #1
[ 1.959951][ T0] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[ 1.961436][ T0] RIP: 0010:__apply_fineibt (arch/x86/kernel/alternative.c:911 arch/x86/kernel/alternative.c:1012)
[ 1.962557][ T0] Code: 24 3c 00 74 5a 48 c7 c7 40 06 22 b1 eb 4c 90 48 c7 c7 20 07 22 b1 48 89 de 48 89 da b9 05 00 00 00 49 89 d8 e8 9c 31 14 00 90 <0f> 0b 90 90 eb 23 90 4d 01 ec 48 c7 c7 20 07 22 b1 4c 89 e6 4c 89
All code
========
0: 24 3c and $0x3c,%al
2: 00 74 5a 48 add %dh,0x48(%rdx,%rbx,2)
6: c7 c7 40 06 22 b1 mov $0xb1220640,%edi
c: eb 4c jmp 0x5a
e: 90 nop
f: 48 c7 c7 20 07 22 b1 mov $0xffffffffb1220720,%rdi
16: 48 89 de mov %rbx,%rsi
19: 48 89 da mov %rbx,%rdx
1c: b9 05 00 00 00 mov $0x5,%ecx
21: 49 89 d8 mov %rbx,%r8
24: e8 9c 31 14 00 callq 0x1431c5
29: 90 nop
2a:* 0f 0b ud2 <-- trapping instruction
2c: 90 nop
2d: 90 nop
2e: eb 23 jmp 0x53
30: 90 nop
31: 4d 01 ec add %r13,%r12
34: 48 c7 c7 20 07 22 b1 mov $0xffffffffb1220720,%rdi
3b: 4c 89 e6 mov %r12,%rsi
3e: 4c rex.WR
3f: 89 .byte 0x89
Code starting with the faulting instruction
===========================================
0: 0f 0b ud2
2: 90 nop
3: 90 nop
4: eb 23 jmp 0x29
6: 90 nop
7: 4d 01 ec add %r13,%r12
a: 48 c7 c7 20 07 22 b1 mov $0xffffffffb1220720,%rdi
11: 4c 89 e6 mov %r12,%rsi
14: 4c rex.WR
15: 89 .byte 0x89
[ 1.965434][ T0] RSP: 0000:ffffffffb1e07e70 EFLAGS: 00010282
[ 1.966532][ T0] RAX: 0000000000000052 RBX: ffffffffb2e29344 RCX: ffffffffb1f1c8c0
[ 1.969432][ T0] RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffffffffb1e07c88
[ 1.970910][ T0] RBP: 1ffffffff61d554a R08: dffffc0000000000 R09: fffffbfff63c0f92
[ 1.973428][ T0] R10: 0000000000000000 R11: dffffc0000000001 R12: ffffffffb2e29344
[ 1.974925][ T0] R13: 1ffffffff63c0fce R14: 000000005f1e3d74 R15: ffffffffb0eaaa51
[ 1.976476][ T0] FS: 0000000000000000(0000) GS:ffff8883af000000(0000) knlGS:0000000000000000
[ 1.977434][ T0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1.978660][ T0] CR2: ffff88843ffff000 CR3: 00000001f266d000 CR4: 00000000000406b0
[ 1.981432][ T0] Call Trace:
[ 1.982066][ T0] <TASK>
[ 1.982649][ T0] ? alternative_instructions (arch/x86/kernel/alternative.c:1387)
[ 1.983721][ T0] ? check_bugs (arch/x86/kernel/cpu/bugs.c:209)
[ 1.984570][ T0] ? start_kernel (init/main.c:1084)
[ 1.985435][ T0] ? x86_64_start_reservations (??:?)
[ 1.986463][ T0] ? x86_64_start_kernel (??:?)
[ 1.987445][ T0] ? secondary_startup_64_no_verify (arch/x86/kernel/head_64.S:370)
[ 1.988620][ T0] </TASK>
[ 1.989432][ T0] irq event stamp: 115689
[ 1.990218][ T0] hardirqs last enabled at (115697): __up_console_sem (arch/x86/include/asm/irqflags.h:42 arch/x86/include/asm/irqflags.h:77 arch/x86/include/asm/irqflags.h:135 kernel/printk/printk.c:347)
[ 1.992045][ T0] hardirqs last disabled at (115704): __up_console_sem (kernel/printk/printk.c:345)
[ 1.993434][ T0] softirqs last enabled at (115720): irq_exit_rcu (kernel/softirq.c:664)
[ 1.995111][ T0] softirqs last disabled at (115713): irq_exit_rcu (kernel/softirq.c:664)
[ 1.997428][ T0] ---[ end trace 0000000000000000 ]---
[ 1.998438][ T0] SMP alternatives: Something went horribly wrong trying to rewrite the CFI implementation.
[ 2.005482][ T0] Freeing SMP alternatives memory: 44K
[ 2.006670][ T0] Running RCU synchronous self tests
[ 2.007663][ T0] Running RCU synchronous self tests
[ 2.009408][ T1] smpboot: CPU0: Intel Xeon E312xx (Sandy Bridge) (family: 0x6, model: 0x2a, stepping: 0x1)
The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20230830/202308301532.d7acf63e-oliver.sang@intel.com
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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