[linux-next:master] [iio] 8d61d01cde: WARNING:at_arch/x86/kernel/cpu/bugs.c:#__warn

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* [linux-next:master] [iio]  8d61d01cde: WARNING:at_arch/x86/kernel/cpu/bugs.c:#__warn_thunk
@ 2024-07-16  7:59 kernel test robot
  2024-07-16 16:37 ` Jonathan Cameron
  0 siblings, 1 reply; 3+ messages in thread
From: kernel test robot @ 2024-07-16  7:59 UTC (permalink / raw)
  To: Nuno Sa
  Cc: oe-lkp, lkp, Linux Memory Management List, Jonathan Cameron,
	linux-iio, oliver.sang



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@intel.com>
| Closes: https://lore.kernel.org/oe-lkp/202407161520.ee3d9347-lkp@intel.com


[    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@intel.com



-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki



^ permalink raw reply	[flat|nested] 3+ messages in thread

* Re: [linux-next:master] [iio]  8d61d01cde: WARNING:at_arch/x86/kernel/cpu/bugs.c:#__warn_thunk
  2024-07-16  7:59 [linux-next:master] [iio] 8d61d01cde: WARNING:at_arch/x86/kernel/cpu/bugs.c:#__warn_thunk kernel test robot
@ 2024-07-16 16:37 ` Jonathan Cameron
  2024-08-05  5:40   ` Oliver Sang
  0 siblings, 1 reply; 3+ messages in thread
From: Jonathan Cameron @ 2024-07-16 16:37 UTC (permalink / raw)
  To: kernel test robot
  Cc: Nuno Sa, oe-lkp, lkp, Linux Memory Management List,
	Jonathan Cameron, linux-iio, Borislav Petkov (AMD), Paul Menzel,
	Marco Elver, Masahiro Yamada

On Tue, 16 Jul 2024 15:59:12 +0800
kernel test robot <oliver.sang@intel.com> wrote:

> 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         |
> +-----------------------------------------------------+------------+------------+

Hi All.

I'm struggling to have any idea what this is reporting.
The code is question must be the use of adis_dev_autoscoped_lock()
which is very straight forward.

		adis_dev_auto_scoped_lock(adis) {
			if (t >= 0x0A)
				adis->spi->max_speed_hz = ADIS16260_SPI_SLOW;
			else
				adis->spi->max_speed_hz = ADIS16260_SPI_FAST;
			return __adis_write_reg_8(adis, ADIS16260_SMPL_PRD, t);
		}
		unreachable();
		//needed because not all compilers seem to be able to tell
		//that a scoped_guard() always runs.

where the definition is simply 

#define adis_dev_auto_scoped_lock(adis) \
	scoped_guard(mutex, &(adis)->state_lock)

Looks like there was some fun with ksan earlier in the year that smells superficially
similar but that is long resolved? (+CC some of the folk involved in solving that).

Any thoughts?

Jonathan

> 
> 
> 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@intel.com>
> | Closes: https://lore.kernel.org/oe-lkp/202407161520.ee3d9347-lkp@intel.com
> 
> 
> [    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@intel.com
> 
> 
> 



^ permalink raw reply	[flat|nested] 3+ messages in thread

* Re: [linux-next:master] [iio]  8d61d01cde: WARNING:at_arch/x86/kernel/cpu/bugs.c:#__warn_thunk
  2024-07-16 16:37 ` Jonathan Cameron
@ 2024-08-05  5:40   ` Oliver Sang
  0 siblings, 0 replies; 3+ messages in thread
From: Oliver Sang @ 2024-08-05  5:40 UTC (permalink / raw)
  To: Jonathan Cameron
  Cc: Nuno Sa, oe-lkp, lkp, Linux Memory Management List,
	Jonathan Cameron, linux-iio, Borislav Petkov (AMD), Paul Menzel,
	Marco Elver, Masahiro Yamada, oliver.sang

hi, Jonathan,

On Tue, Jul 16, 2024 at 05:37:22PM +0100, Jonathan Cameron wrote:
> On Tue, 16 Jul 2024 15:59:12 +0800
> kernel test robot <oliver.sang@intel.com> wrote:
> 
> > 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         |
> > +-----------------------------------------------------+------------+------------+
> 
> Hi All.
> 
> I'm struggling to have any idea what this is reporting.
> The code is question must be the use of adis_dev_autoscoped_lock()
> which is very straight forward.
> 
> 		adis_dev_auto_scoped_lock(adis) {
> 			if (t >= 0x0A)
> 				adis->spi->max_speed_hz = ADIS16260_SPI_SLOW;
> 			else
> 				adis->spi->max_speed_hz = ADIS16260_SPI_FAST;
> 			return __adis_write_reg_8(adis, ADIS16260_SMPL_PRD, t);
> 		}
> 		unreachable();
> 		//needed because not all compilers seem to be able to tell
> 		//that a scoped_guard() always runs.
> 
> where the definition is simply 
> 
> #define adis_dev_auto_scoped_lock(adis) \
> 	scoped_guard(mutex, &(adis)->state_lock)
> 
> Looks like there was some fun with ksan earlier in the year that smells superficially
> similar but that is long resolved? (+CC some of the folk involved in solving that).
> 
> Any thoughts?

sorry for late. we rebuild kernels with gcc-13, then the issue disappeared.
but we don't have enough knowledge what compilers' difference could cause this.
just FYI.


> 
> Jonathan
> 
> > 
> > 
> > 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@intel.com>
> > | Closes: https://lore.kernel.org/oe-lkp/202407161520.ee3d9347-lkp@intel.com
> > 
> > 
> > [    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@intel.com
> > 
> > 
> > 
> 
> 


^ permalink raw reply	[flat|nested] 3+ messages in thread

end of thread, other threads:[~2024-08-05  5:40 UTC | newest]

Thread overview: 3+ messages (download: mbox.gz follow: Atom feed
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2024-07-16  7:59 [linux-next:master] [iio] 8d61d01cde: WARNING:at_arch/x86/kernel/cpu/bugs.c:#__warn_thunk kernel test robot
2024-07-16 16:37 ` Jonathan Cameron
2024-08-05  5:40   ` Oliver Sang

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