Hello,
kernel test robot noticed "WARNING:at_arch/x86/kernel/cpu/bugs.c:#__warn_thunk" on:
commit: 8d61d01cdec275719b70295e98e4d45c5f284f29 ("iio: gyro: adis16260: make use of the new lock helpers")
https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master
[test failed on linux-next/master 91e3b24eb7d297d9d99030800ed96944b8652eaf]
in testcase: rcutorture
version:
with following parameters:
runtime: 300s
test: cpuhotplug
torture_type: trivial
compiler: clang-18
test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 16G
(please refer to attached dmesg/kmsg for entire log/backtrace)
+-----------------------------------------------------+------------+------------+
| | ccd52641f9 | 8d61d01cde |
+-----------------------------------------------------+------------+------------+
| WARNING:at_arch/x86/kernel/cpu/bugs.c:#__warn_thunk | 0 | 30 |
| RIP:__warn_thunk | 0 | 30 |
+-----------------------------------------------------+------------+------------+
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@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-lkp/202407161520.ee3d9347-lkp@xxxxxxxxx
[ 6.698254][ T1] ------------[ cut here ]------------
[ 6.698774][ T1] Unpatched return thunk in use. This should not happen!
[ 6.699377][ T1] WARNING: CPU: 0 PID: 1 at arch/x86/kernel/cpu/bugs.c:3023 __warn_thunk (arch/x86/kernel/cpu/bugs.c:3023)
[ 6.699604][ T1] Modules linked in:
[ 6.699937][ T1] CPU: 0 PID: 1 Comm: swapper Not tainted 6.10.0-rc4-00198-g8d61d01cdec2 #1
[ 6.700668][ T1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[ 6.701548][ T1] RIP: 0010:__warn_thunk (arch/x86/kernel/cpu/bugs.c:3023)
[ 6.701983][ T1] Code: 1f 44 00 00 80 3d dd fb e3 03 00 74 08 31 ff c3 cc cc cc cc cc c6 05 cc fb e3 03 01 90 48 c7 c7 40 b0 a1 83 e8 76 c6 13 00 90 <0f> 0b 90 90 31 ff c3 cc cc cc cc cc cc cc cc cc cc cc cc cc cc b8
All code
========
0: 1f (bad)
1: 44 00 00 add %r8b,(%rax)
4: 80 3d dd fb e3 03 00 cmpb $0x0,0x3e3fbdd(%rip) # 0x3e3fbe8
b: 74 08 je 0x15
d: 31 ff xor %edi,%edi
f: c3 ret
10: cc int3
11: cc int3
12: cc int3
13: cc int3
14: cc int3
15: c6 05 cc fb e3 03 01 movb $0x1,0x3e3fbcc(%rip) # 0x3e3fbe8
1c: 90 nop
1d: 48 c7 c7 40 b0 a1 83 mov $0xffffffff83a1b040,%rdi
24: e8 76 c6 13 00 call 0x13c69f
29: 90 nop
2a:* 0f 0b ud2 <-- trapping instruction
2c: 90 nop
2d: 90 nop
2e: 31 ff xor %edi,%edi
30: c3 ret
31: cc int3
32: cc int3
33: cc int3
34: cc int3
35: cc int3
36: cc int3
37: cc int3
38: cc int3
39: cc int3
3a: cc int3
3b: cc int3
3c: cc int3
3d: cc int3
3e: cc int3
3f: b8 .byte 0xb8
Code starting with the faulting instruction
===========================================
0: 0f 0b ud2
2: 90 nop
3: 90 nop
4: 31 ff xor %edi,%edi
6: c3 ret
7: cc int3
8: cc int3
9: cc int3
a: cc int3
b: cc int3
c: cc int3
d: cc int3
e: cc int3
f: cc int3
10: cc int3
11: cc int3
12: cc int3
13: cc int3
14: cc int3
15: b8 .byte 0xb8
[ 6.703602][ T1] RSP: 0000:ffffc9000001fe88 EFLAGS: 00010246
[ 6.704116][ T1] RAX: 0000000000000000 RBX: ffffffff856a96a0 RCX: 0000000000000000
[ 6.704787][ T1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[ 6.705462][ T1] RBP: ffffc9000001fed8 R08: 0000000000000000 R09: 0000000000000000
[ 6.706134][ T1] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
[ 6.706804][ T1] R13: 0000000000000000 R14: dffffc0000000000 R15: ffffffff856a96a0
[ 6.707476][ T1] FS: 0000000000000000(0000) GS:ffffffff844a7000(0000) knlGS:0000000000000000
[ 6.707601][ T1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6.708157][ T1] CR2: ffff88843ffff000 CR3: 000000000446c000 CR4: 00000000000406f0
[ 6.708834][ T1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 6.709505][ T1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 6.710174][ T1] Call Trace:
[ 6.710452][ T1] <TASK>
[ 6.710701][ T1] ? __warn (kernel/panic.c:239 kernel/panic.c:693)
[ 6.711054][ T1] ? __warn_thunk (arch/x86/kernel/cpu/bugs.c:3023)
[ 6.711434][ T1] ? __warn_thunk (arch/x86/kernel/cpu/bugs.c:3023)
[ 6.711604][ T1] ? report_bug (lib/bug.c:?)
[ 6.711991][ T1] ? handle_bug (arch/x86/kernel/traps.c:239)
[ 6.712357][ T1] ? exc_invalid_op (arch/x86/kernel/traps.c:260)
[ 6.712759][ T1] ? asm_exc_invalid_op (arch/x86/include/asm/idtentry.h:621)
[ 6.713193][ T1] ? __warn_thunk (arch/x86/kernel/cpu/bugs.c:3023)
[ 6.713575][ T1] ? __warn_thunk (arch/x86/kernel/cpu/bugs.c:3023)
[ 6.713956][ T1] warn_thunk_thunk (arch/x86/entry/entry.S:48)
[ 6.714352][ T1] ? __cfi_asan.module_ctor (main.c:?)
[ 6.714810][ T1] do_basic_setup (init/main.c:1126 init/main.c:1363)
[ 6.715194][ T1] kernel_init_freeable (init/main.c:1582)
[ 6.715602][ T1] ? __cfi_kernel_init (init/main.c:1459)
[ 6.716022][ T1] kernel_init (init/main.c:1469)
[ 6.716389][ T1] ret_from_fork (arch/x86/kernel/process.c:153)
[ 6.716769][ T1] ? __cfi_kernel_init (init/main.c:1459)
[ 6.717187][ T1] ret_from_fork_asm (arch/x86/entry/entry_64.S:257)
[ 6.717600][ T1] </TASK>
[ 6.717856][ T1] irq event stamp: 14123
[ 6.718213][ T1] hardirqs last enabled at (14131): console_unlock (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:341 kernel/printk/printk.c:2746 kernel/printk/printk.c:3065)
[ 6.719011][ T1] hardirqs last disabled at (14138): console_unlock (kernel/printk/printk.c:339)
[ 6.719601][ T1] softirqs last enabled at (2244): irq_exit_rcu (kernel/softirq.c:651)
[ 6.720366][ T1] softirqs last disabled at (2235): irq_exit_rcu (kernel/softirq.c:651)
[ 6.721120][ T1] ---[ end trace 0000000000000000 ]---
The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20240716/202407161520.ee3d9347-lkp@xxxxxxxxx
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
