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Message-ID: <202411122234.64f169e3-oliver.sang@intel.com>
Date: Tue, 12 Nov 2024 22:58:13 +0800
From: kernel test robot <oliver.sang@...el.com>
To: Daniel Golle <daniel@...rotopia.org>
CC: <oe-lkp@...ts.linux.dev>, <lkp@...el.com>, Paolo Abeni
<pabeni@...hat.com>, Andrew Lunn <andrew@...n.ch>, <netdev@...r.kernel.org>,
<oliver.sang@...el.com>
Subject: [linux-next:master] [net] 1758af47b9:
WARNING:at_arch/x86/kernel/cpu/bugs.c:#__warn_thunk
Hello,
kernel test robot noticed "WARNING:at_arch/x86/kernel/cpu/bugs.c:#__warn_thunk" on:
commit: 1758af47b98c17da464cb45f476875150955dd48 ("net: phy: intel-xway: add support for PHY LEDs")
https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master
[test failed on linux-next/master 74741a050b79d31d8d2eeee12c77736596d0a6b2]
in testcase: boot
config: x86_64-randconfig-076-20241107
compiler: clang-19
test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 16G
(please refer to attached dmesg/kmsg for entire log/backtrace)
+------------------------------------------------------------------------------+------------+------------+
| | eb89c79c1b | 1758af47b9 |
+------------------------------------------------------------------------------+------------+------------+
| WARNING:at_arch/x86/kernel/cpu/bugs.c:#__warn_thunk | 0 | 24 |
| RIP:__warn_thunk | 0 | 24 |
+------------------------------------------------------------------------------+------------+------------+
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/202411122234.64f169e3-oliver.sang@intel.com
[ 3.216697][ T1] ------------[ cut here ]------------
[ 3.217114][ T1] Unpatched return thunk in use. This should not happen!
[ 3.217622][ T1] WARNING: CPU: 0 PID: 1 at arch/x86/kernel/cpu/bugs.c:3031 __warn_thunk (arch/x86/kernel/cpu/bugs.c:3031)
[ 3.218287][ T1] Modules linked in:
[ 3.218572][ T1] CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Tainted: G T 6.12.0-rc2-00578-g1758af47b98c #1
[ 3.219355][ T1] Tainted: [T]=RANDSTRUCT
[ 3.219665][ T1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[ 3.220404][ T1] RIP: 0010:__warn_thunk (arch/x86/kernel/cpu/bugs.c:3031)
[ 3.220772][ T1] Code: 90 0f 1f 44 00 00 80 3d 73 2b d4 04 00 74 06 c3 cc cc cc cc cc c6 05 64 2b d4 04 01 90 48 c7 c7 40 c4 a1 91 e8 d8 67 0a 00 90 <0f> 0b 90 90 c3 cc cc cc cc cc 66 2e 0f 1f 84 00 00 00 00 00 0f 1f
All code
========
0: 90 nop
1: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
6: 80 3d 73 2b d4 04 00 cmpb $0x0,0x4d42b73(%rip) # 0x4d42b80
d: 74 06 je 0x15
f: c3 retq
10: cc int3
11: cc int3
12: cc int3
13: cc int3
14: cc int3
15: c6 05 64 2b d4 04 01 movb $0x1,0x4d42b64(%rip) # 0x4d42b80
1c: 90 nop
1d: 48 c7 c7 40 c4 a1 91 mov $0xffffffff91a1c440,%rdi
24: e8 d8 67 0a 00 callq 0xa6801
29: 90 nop
2a:* 0f 0b ud2 <-- trapping instruction
2c: 90 nop
2d: 90 nop
2e: c3 retq
2f: cc int3
30: cc int3
31: cc int3
32: cc int3
33: cc int3
34: 66 2e 0f 1f 84 00 00 nopw %cs:0x0(%rax,%rax,1)
3b: 00 00 00
3e: 0f .byte 0xf
3f: 1f (bad)
Code starting with the faulting instruction
===========================================
0: 0f 0b ud2
2: 90 nop
3: 90 nop
4: c3 retq
5: cc int3
6: cc int3
7: cc int3
8: cc int3
9: cc int3
a: 66 2e 0f 1f 84 00 00 nopw %cs:0x0(%rax,%rax,1)
11: 00 00 00
14: 0f .byte 0xf
15: 1f (bad)
[ 3.222164][ T1] RSP: 0000:ffffc9000001fe88 EFLAGS: 00010246
[ 3.222603][ T1] RAX: 74186e1ad2fd4400 RBX: ffffffff9456fee0 RCX: 0000000000000000
[ 3.222824][ T1] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000001
[ 3.223395][ T1] RBP: ffffc9000001fed8 R08: 0000000000000003 R09: 0000000000000004
[ 3.223962][ T1] R10: dffffc0000000000 R11: fffffbfff259d7f8 R12: 0000000000000000
[ 3.224528][ T1] R13: 0000000000000000 R14: dffffc0000000000 R15: ffffffff9456fee0
[ 3.225094][ T1] FS: 0000000000000000(0000) GS:ffff8883aee00000(0000) knlGS:0000000000000000
[ 3.225728][ T1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3.226196][ T1] CR2: ffff88843ffff000 CR3: 00000003ab498000 CR4: 00000000000406b0
[ 3.226772][ T1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3.227340][ T1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3.227911][ T1] Call Trace:
[ 3.228147][ T1] <TASK>
[ 3.228360][ T1] ? __warn (kernel/panic.c:748)
[ 3.228710][ T1] ? __warn_thunk (arch/x86/kernel/cpu/bugs.c:3031)
[ 3.229129][ T1] ? __warn_thunk (arch/x86/kernel/cpu/bugs.c:3031)
[ 3.229545][ T1] ? report_bug (lib/bug.c:? lib/bug.c:219)
[ 3.229942][ T1] ? console_unlock (kernel/printk/printk.c:3258 kernel/printk/printk.c:3279)
[ 3.230293][ T1] ? handle_bug (arch/x86/kernel/traps.c:285)
[ 3.230607][ T1] ? exc_invalid_op (arch/x86/kernel/traps.c:309)
[ 3.230944][ T1] ? asm_exc_invalid_op (arch/x86/include/asm/idtentry.h:621)
[ 3.231315][ T1] ? __warn_thunk (arch/x86/kernel/cpu/bugs.c:3031)
[ 3.231641][ T1] ? __warn_thunk (arch/x86/kernel/cpu/bugs.c:3031)
[ 3.231964][ T1] warn_thunk_thunk (arch/x86/entry/entry.S:48)
[ 3.232302][ T1] ? __cfi_asan.module_ctor (main.c:?)
[ 3.232693][ T1] do_basic_setup (init/main.c:1129 init/main.c:1365)
[ 3.232829][ T1] kernel_init_freeable (init/main.c:1582)
[ 3.233203][ T1] ? __cfi_kernel_init (init/main.c:1461)
[ 3.233556][ T1] kernel_init (init/main.c:1471)
[ 3.233867][ T1] ? __cfi_kernel_init (init/main.c:1461)
[ 3.234224][ T1] ret_from_fork (arch/x86/kernel/process.c:147)
[ 3.234543][ T1] ? __cfi_kernel_init (init/main.c:1461)
[ 3.234896][ T1] ret_from_fork_asm (arch/x86/entry/entry_64.S:257)
[ 3.235249][ T1] </TASK>
[ 3.235466][ T1] irq event stamp: 3707
[ 3.235763][ T1] hardirqs last enabled at (3715): __console_unlock (arch/x86/include/asm/irqflags.h:26 arch/x86/include/asm/irqflags.h:87 arch/x86/include/asm/irqflags.h:147 kernel/printk/printk.c:344 kernel/printk/printk.c:2844)
[ 3.236428][ T1] hardirqs last disabled at (3722): __console_unlock (kernel/printk/printk.c:342 kernel/printk/printk.c:2844)
[ 3.237092][ T1] softirqs last enabled at (3640): handle_softirqs (arch/x86/include/asm/preempt.h:26 kernel/softirq.c:401 kernel/softirq.c:582)
[ 3.237762][ T1] softirqs last disabled at (3631): __irq_exit_rcu (kernel/softirq.c:617 kernel/softirq.c:639)
[ 3.238433][ T1] ---[ end trace 0000000000000000 ]---
The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20241112/202411122234.64f169e3-oliver.sang@intel.com
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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