Greeting,

FYI, we noticed the following commit (built with gcc-11):

commit: d0c36de12ed8a0da9c7811fc2fc61a14b38580c9 ("lib/find: optimize for_each() macros")
https://github.com/norov/linux cpumask

in testcase: phoronix-test-suite
version: 
with following parameters:

	need_x: true
	test: gputest-1.3.2
	option_a: TessMark
	option_b: 1024 x 768
	option_c: Fullscreen
	cpufreq_governor: performance

test-description: The Phoronix Test Suite is the most comprehensive testing and benchmarking platform available that provides an extensible framework for which new tests can be easily added.
test-url: http://www.phoronix-test-suite.com/


on test machine: 12 threads 1 sockets Intel(R) Core(TM) i7-8700 CPU @ 3.20GHz (Coffee Lake) with 32G memory

caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):


If you fix the issue, kindly add following tag
Reported-by: kernel test robot <oliver.sang@intel.com>
Link: https://lore.kernel.org/r/202209132206.2c226161-oliver.sang(a)intel.com


[   42.553146][    C0] watchdog: BUG: soft lockup - CPU#0 stuck for 26s! [migration/0:14]
[   42.553146][    C0] Modules linked in:
[   42.553146][    C0] CPU: 0 PID: 14 Comm: migration/0 Not tainted 6.0.0-rc4-00015-gd0c36de12ed8 #1
[   42.565146][    C1] watchdog: BUG: soft lockup - CPU#1 stuck for 26s! [migration/1:18]
[   42.553146][    C0] Hardware name: Dell Inc. OptiPlex 7060/0C96W1, BIOS 1.4.2 06/11/2019
[ 42.553146][ C0] Stopper: multi_cpu_stop+0x0/0x100 <- stop_machine_cpuslocked (kernel/stop_machine.c:429 kernel/stop_machine.c:469 kernel/stop_machine.c:619) 
[   42.579146][    C3] watchdog: BUG: soft lockup - CPU#3 stuck for 26s! [migration/3:28]
[   42.579146][    C3] Modules linked in:
[   42.579146][    C3] CPU: 3 PID: 28 Comm: migration/3 Not tainted 6.0.0-rc4-00015-gd0c36de12ed8 #1
[   42.579146][    C3] Hardware name: Dell Inc. OptiPlex 7060/0C96W1, BIOS 1.4.2 06/11/2019
[ 42.579146][ C3] Stopper: multi_cpu_stop+0x0/0x100 <- stop_machine_cpuslocked (kernel/stop_machine.c:429 kernel/stop_machine.c:469 kernel/stop_machine.c:619) 
[ 42.579146][ C3] RIP: stop_machine_yield+0x2/0x40 
[ 42.579146][ C3] Code: 68 65 48 2b 14 25 28 00 00 00 75 11 4c 8b 65 f8 c9 c3 cc cc cc cc b8 fe ff ff ff eb df e8 46 8f b6 00 66 0f 1f 44 00 00 f3 90 <c3> cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 66 66 2e 0f 1f 84
All code
========
   0:	68 65 48 2b 14       	pushq  $0x142b4865
   5:	25 28 00 00 00       	and    $0x28,%eax
   a:	75 11                	jne    0x1d
   c:	4c 8b 65 f8          	mov    -0x8(%rbp),%r12
  10:	c9                   	leaveq 
  11:	c3                   	retq   
  12:	cc                   	int3   
  13:	cc                   	int3   
  14:	cc                   	int3   
  15:	cc                   	int3   
  16:	b8 fe ff ff ff       	mov    $0xfffffffe,%eax
  1b:	eb df                	jmp    0xfffffffffffffffc
  1d:	e8 46 8f b6 00       	callq  0xb68f68
  22:	66 0f 1f 44 00 00    	nopw   0x0(%rax,%rax,1)
  28:	f3 90                	pause  
  2a:*	c3                   	retq   		<-- trapping instruction
  2b:	cc                   	int3   
  2c:	cc                   	int3   
  2d:	cc                   	int3   
  2e:	cc                   	int3   
  2f:	66 66 2e 0f 1f 84 00 	data16 nopw %cs:0x0(%rax,%rax,1)
  36:	00 00 00 00 
  3a:	66                   	data16
  3b:	66                   	data16
  3c:	2e                   	cs
  3d:	0f                   	.byte 0xf
  3e:	1f                   	(bad)  
  3f:	84                   	.byte 0x84

Code starting with the faulting instruction
===========================================
   0:	c3                   	retq   
   1:	cc                   	int3   
   2:	cc                   	int3   
   3:	cc                   	int3   
   4:	cc                   	int3   
   5:	66 66 2e 0f 1f 84 00 	data16 nopw %cs:0x0(%rax,%rax,1)
   c:	00 00 00 00 
  10:	66                   	data16
  11:	66                   	data16
  12:	2e                   	cs
  13:	0f                   	.byte 0xf
  14:	1f                   	(bad)  
  15:	84                   	.byte 0x84
[   42.579146][    C3] RSP: 0000:ffffc900001b7e68 EFLAGS: 00000246
[   42.579146][    C3] RAX: ffff888853cec340 RBX: ffffc90000507d50 RCX: 0000000000000000
[   42.579146][    C3] RDX: 0000000000000004 RSI: 000000000000000c RDI: ffffffff82d8c120
[   42.579146][    C3] RBP: ffffc90000507d74 R08: ffff888853cde740 R09: 00000003da8ea7ac
[   42.579146][    C3] R10: 00000000000000f8 R11: 0000000000000000 R12: 0000000000000001
[   42.579146][    C3] R13: ffffffff82d8c120 R14: 0000000000000000 R15: 0000000000000001
[   42.579146][    C3] FS:  0000000000000000(0000) GS:ffff888853cc0000(0000) knlGS:0000000000000000
[   42.579146][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   42.579146][    C3] CR2: 0000000000000000 CR3: 000000087b60a001 CR4: 00000000003706e0
[   42.579146][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   42.579146][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   42.579146][    C3] Call Trace:
[   42.579146][    C3]  <TASK>
[ 42.579146][ C3] multi_cpu_stop (kernel/stop_machine.c:230) 
[ 42.579146][ C3] ? stop_machine_yield+0x40/0x40 
[ 42.579146][ C3] cpu_stopper_thread (kernel/stop_machine.c:511) 
[ 42.579146][ C3] ? smpboot_thread_fn (kernel/smpboot.c:112) 
[ 42.579146][ C3] ? find_next_bit (arch/x86/events/intel/core.c:5593) 
[ 42.579146][ C3] smpboot_thread_fn (kernel/smpboot.c:164 (discriminator 4)) 
[ 42.579146][ C3] kthread (kernel/kthread.c:376) 
[ 42.579146][ C3] ? kthread_complete_and_exit (kernel/kthread.c:331) 
[ 42.579146][ C3] ret_from_fork (arch/x86/entry/entry_64.S:306) 
[   42.579146][    C3]  </TASK>
[   42.565146][    C1] Modules linked in:
[ 42.553146][ C0] RIP: stop_machine_yield+0x2/0x40 
[   42.593146][    C5] watchdog: BUG: soft lockup - CPU#5 stuck for 26s! [migration/5:38]
[   42.593146][    C5] Modules linked in:
[   42.593146][    C5] CPU: 5 PID: 38 Comm: migration/5 Tainted: G             L     6.0.0-rc4-00015-gd0c36de12ed8 #1
[   42.593146][    C5] Hardware name: Dell Inc. OptiPlex 7060/0C96W1, BIOS 1.4.2 06/11/2019
[ 42.593146][ C5] Stopper: multi_cpu_stop+0x0/0x100 <- stop_machine_cpuslocked (kernel/stop_machine.c:429 kernel/stop_machine.c:469 kernel/stop_machine.c:619) 
[ 42.593146][ C5] RIP: stop_machine_yield+0x2/0x40 
[ 42.593146][ C5] Code: 68 65 48 2b 14 25 28 00 00 00 75 11 4c 8b 65 f8 c9 c3 cc cc cc cc b8 fe ff ff ff eb df e8 46 8f b6 00 66 0f 1f 44 00 00 f3 90 <c3> cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 66 66 2e 0f 1f 84
All code
========
   0:	68 65 48 2b 14       	pushq  $0x142b4865
   5:	25 28 00 00 00       	and    $0x28,%eax
   a:	75 11                	jne    0x1d
   c:	4c 8b 65 f8          	mov    -0x8(%rbp),%r12
  10:	c9                   	leaveq 
  11:	c3                   	retq   
  12:	cc                   	int3   
  13:	cc                   	int3   
  14:	cc                   	int3   
  15:	cc                   	int3   
  16:	b8 fe ff ff ff       	mov    $0xfffffffe,%eax
  1b:	eb df                	jmp    0xfffffffffffffffc
  1d:	e8 46 8f b6 00       	callq  0xb68f68
  22:	66 0f 1f 44 00 00    	nopw   0x0(%rax,%rax,1)
  28:	f3 90                	pause  
  2a:*	c3                   	retq   		<-- trapping instruction
  2b:	cc                   	int3   
  2c:	cc                   	int3   
  2d:	cc                   	int3   
  2e:	cc                   	int3   
  2f:	66 66 2e 0f 1f 84 00 	data16 nopw %cs:0x0(%rax,%rax,1)
  36:	00 00 00 00 
  3a:	66                   	data16
  3b:	66                   	data16
  3c:	2e                   	cs
  3d:	0f                   	.byte 0xf
  3e:	1f                   	(bad)  
  3f:	84                   	.byte 0x84

Code starting with the faulting instruction
===========================================
   0:	c3                   	retq   
   1:	cc                   	int3   
   2:	cc                   	int3   
   3:	cc                   	int3   
   4:	cc                   	int3   
   5:	66 66 2e 0f 1f 84 00 	data16 nopw %cs:0x0(%rax,%rax,1)
   c:	00 00 00 00 
  10:	66                   	data16
  11:	66                   	data16
  12:	2e                   	cs
  13:	0f                   	.byte 0xf
  14:	1f                   	(bad)  
  15:	84                   	.byte 0x84
[   42.593146][    C5] RSP: 0000:ffffc9000020fe68 EFLAGS: 00000246
[   42.593146][    C5] RAX: ffff888853d6c340 RBX: ffffc90000507d50 RCX: 0000000000000000
[   42.593146][    C5] RDX: 0000000000000004 RSI: 000000000000000c RDI: ffffffff82d8c120
[   42.593146][    C5] RBP: ffffc90000507d74 R08: ffff888853d5e740 R09: 0000000000000025
[   42.593146][    C5] R10: 0000000000000025 R11: 0000000000000000 R12: 0000000000000001
[   42.593146][    C5] R13: ffffffff82d8c120 R14: 0000000000000000 R15: 0000000000000001
[   42.593146][    C5] FS:  0000000000000000(0000) GS:ffff888853d40000(0000) knlGS:0000000000000000
[   42.593146][    C5] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   42.593146][    C5] CR2: 0000000000000000 CR3: 000000087b60a001 CR4: 00000000003706e0
[   42.593146][    C5] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   42.593146][    C5] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   42.593146][    C5] Call Trace:
[   42.593146][    C5]  <TASK>
[ 42.593146][ C5] multi_cpu_stop (kernel/stop_machine.c:230) 
[ 42.593146][ C5] ? stop_machine_yield+0x40/0x40 
[ 42.593146][ C5] cpu_stopper_thread (kernel/stop_machine.c:511) 
[ 42.593146][ C5] ? smpboot_thread_fn (kernel/smpboot.c:112) 
[ 42.593146][ C5] ? find_next_bit (arch/x86/events/intel/core.c:5593) 
[ 42.593146][ C5] smpboot_thread_fn (kernel/smpboot.c:164 (discriminator 4)) 
[ 42.593146][ C5] kthread (kernel/kthread.c:376) 
[ 42.593146][ C5] ? kthread_complete_and_exit (kernel/kthread.c:331) 
[ 42.593146][ C5] ret_from_fork (arch/x86/entry/entry_64.S:306) 
[   42.593146][    C5]  </TASK>
[   42.595146][    C7] watchdog: BUG: soft lockup - CPU#7 stuck for 26s! [migration/7:49]
[   42.595146][    C7] Modules linked in:
[   42.595146][    C7] CPU: 7 PID: 49 Comm: migration/7 Tainted: G             L     6.0.0-rc4-00015-gd0c36de12ed8 #1
[   42.595146][    C7] Hardware name: Dell Inc. OptiPlex 7060/0C96W1, BIOS 1.4.2 06/11/2019
[ 42.595146][ C7] Stopper: multi_cpu_stop+0x0/0x100 <- stop_machine_cpuslocked (kernel/stop_machine.c:429 kernel/stop_machine.c:469 kernel/stop_machine.c:619) 
[ 42.595146][ C7] RIP: stop_machine_yield+0x2/0x40 
[ 42.595146][ C7] Code: 68 65 48 2b 14 25 28 00 00 00 75 11 4c 8b 65 f8 c9 c3 cc cc cc cc b8 fe ff ff ff eb df e8 46 8f b6 00 66 0f 1f 44 00 00 f3 90 <c3> cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 66 66 2e 0f 1f 84
All code
========
   0:	68 65 48 2b 14       	pushq  $0x142b4865
   5:	25 28 00 00 00       	and    $0x28,%eax
   a:	75 11                	jne    0x1d
   c:	4c 8b 65 f8          	mov    -0x8(%rbp),%r12
  10:	c9                   	leaveq 
  11:	c3                   	retq   
  12:	cc                   	int3   
  13:	cc                   	int3   
  14:	cc                   	int3   
  15:	cc                   	int3   
  16:	b8 fe ff ff ff       	mov    $0xfffffffe,%eax
  1b:	eb df                	jmp    0xfffffffffffffffc
  1d:	e8 46 8f b6 00       	callq  0xb68f68
  22:	66 0f 1f 44 00 00    	nopw   0x0(%rax,%rax,1)
  28:	f3 90                	pause  
  2a:*	c3                   	retq   		<-- trapping instruction
  2b:	cc                   	int3   
  2c:	cc                   	int3   
  2d:	cc                   	int3   
  2e:	cc                   	int3   
  2f:	66 66 2e 0f 1f 84 00 	data16 nopw %cs:0x0(%rax,%rax,1)
  36:	00 00 00 00 
  3a:	66                   	data16
  3b:	66                   	data16
  3c:	2e                   	cs
  3d:	0f                   	.byte 0xf
  3e:	1f                   	(bad)  
  3f:	84                   	.byte 0x84

Code starting with the faulting instruction
===========================================
   0:	c3                   	retq   
   1:	cc                   	int3   
   2:	cc                   	int3   
   3:	cc                   	int3   
   4:	cc                   	int3   
   5:	66 66 2e 0f 1f 84 00 	data16 nopw %cs:0x0(%rax,%rax,1)
   c:	00 00 00 00 
  10:	66                   	data16
  11:	66                   	data16
  12:	2e                   	cs
  13:	0f                   	.byte 0xf
  14:	1f                   	(bad)  
  15:	84                   	.byte 0x84
[   42.595146][    C7] RSP: 0000:ffffc9000026fe68 EFLAGS: 00000246
[   42.595146][    C7] RAX: ffff888853dec340 RBX: ffffc90000507d50 RCX: 0000000000000000
[   42.595146][    C7] RDX: 0000000000000004 RSI: 000000000000000c RDI: ffffffff82d8c120
[   42.595146][    C7] RBP: ffffc90000507d74 R08: ffff888853dde740 R09: 0000000000017f2b
[   42.595146][    C7] R10: 0000000000017f2b R11: 0000000000000000 R12: 0000000000000001
[   42.595146][    C7] R13: ffffffff82d8c120 R14: 0000000000000000 R15: 0000000000000001
[   42.595146][    C7] FS:  0000000000000000(0000) GS:ffff888853dc0000(0000) knlGS:0000000000000000
[   42.595146][    C7] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   42.595146][    C7] CR2: 0000000000000000 CR3: 000000087b60a001 CR4: 00000000003706e0
[   42.595146][    C7] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   42.595146][    C7] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   42.595146][    C7] Call Trace:
[   42.595146][    C7]  <TASK>
[ 42.595146][ C7] multi_cpu_stop (kernel/stop_machine.c:230) 
[ 42.595146][ C7] ? stop_machine_yield+0x40/0x40 
[ 42.595146][ C7] cpu_stopper_thread (kernel/stop_machine.c:511) 
[ 42.595146][ C7] ? smpboot_thread_fn (kernel/smpboot.c:112) 
[ 42.595146][ C7] ? find_next_bit (arch/x86/events/intel/core.c:5593) 
[ 42.595146][ C7] smpboot_thread_fn (kernel/smpboot.c:164 (discriminator 4)) 
[ 42.595146][ C7] kthread (kernel/kthread.c:376) 
[ 42.595146][ C7] ? kthread_complete_and_exit (kernel/kthread.c:331) 
[ 42.595146][ C7] ret_from_fork (arch/x86/entry/entry_64.S:306) 
[   42.595146][    C7]  </TASK>
[   42.565146][    C1] CPU: 1 PID: 18 Comm: migration/1 Tainted: G             L     6.0.0-rc4-00015-gd0c36de12ed8 #1
[   42.600147][    C6] watchdog: BUG: soft lockup - CPU#6 stuck for 26s! [migration/6:43]
[   42.600147][    C6] Modules linked in:
[   42.600147][    C6] CPU: 6 PID: 43 Comm: migration/6 Tainted: G             L     6.0.0-rc4-00015-gd0c36de12ed8 #1
[   42.600147][    C6] Hardware name: Dell Inc. OptiPlex 7060/0C96W1, BIOS 1.4.2 06/11/2019
[ 42.600147][ C6] Stopper: multi_cpu_stop+0x0/0x100 <- stop_machine_cpuslocked (kernel/stop_machine.c:429 kernel/stop_machine.c:469 kernel/stop_machine.c:619) 
[ 42.600147][ C6] RIP: stop_machine_yield+0x2/0x40 
[ 42.600147][ C6] Code: 68 65 48 2b 14 25 28 00 00 00 75 11 4c 8b 65 f8 c9 c3 cc cc cc cc b8 fe ff ff ff eb df e8 46 8f b6 00 66 0f 1f 44 00 00 f3 90 <c3> cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 66 66 2e 0f 1f 84
All code
========
   0:	68 65 48 2b 14       	pushq  $0x142b4865
   5:	25 28 00 00 00       	and    $0x28,%eax
   a:	75 11                	jne    0x1d
   c:	4c 8b 65 f8          	mov    -0x8(%rbp),%r12
  10:	c9                   	leaveq 
  11:	c3                   	retq   
  12:	cc                   	int3   
  13:	cc                   	int3   
  14:	cc                   	int3   
  15:	cc                   	int3   
  16:	b8 fe ff ff ff       	mov    $0xfffffffe,%eax
  1b:	eb df                	jmp    0xfffffffffffffffc
  1d:	e8 46 8f b6 00       	callq  0xb68f68
  22:	66 0f 1f 44 00 00    	nopw   0x0(%rax,%rax,1)
  28:	f3 90                	pause  
  2a:*	c3                   	retq   		<-- trapping instruction
  2b:	cc                   	int3   
  2c:	cc                   	int3   
  2d:	cc                   	int3   
  2e:	cc                   	int3   
  2f:	66 66 2e 0f 1f 84 00 	data16 nopw %cs:0x0(%rax,%rax,1)
  36:	00 00 00 00 
  3a:	66                   	data16
  3b:	66                   	data16
  3c:	2e                   	cs
  3d:	0f                   	.byte 0xf
  3e:	1f                   	(bad)  
  3f:	84                   	.byte 0x84

Code starting with the faulting instruction
===========================================
   0:	c3                   	retq   
   1:	cc                   	int3   
   2:	cc                   	int3   
   3:	cc                   	int3   
   4:	cc                   	int3   
   5:	66 66 2e 0f 1f 84 00 	data16 nopw %cs:0x0(%rax,%rax,1)
   c:	00 00 00 00 
  10:	66                   	data16
  11:	66                   	data16
  12:	2e                   	cs
  13:	0f                   	.byte 0xf
  14:	1f                   	(bad)  
  15:	84                   	.byte 0x84
[   42.600147][    C6] RSP: 0000:ffffc9000023be68 EFLAGS: 00000246
[   42.600147][    C6] RAX: ffff888853dac340 RBX: ffffc90000507d50 RCX: 0000000000000000
[   42.600147][    C6] RDX: 0000000000000004 RSI: 000000000000000c RDI: ffffffff82d8c120
[   42.600147][    C6] RBP: ffffc90000507d74 R08: ffff888853d9e740 R09: 00000000fa83b2da
[   42.600147][    C6] R10: 0000000002e4dad2 R11: 0000000002dbfe81 R12: 0000000000000001
[   42.600147][    C6] R13: ffffffff82d8c120 R14: 0000000000000000 R15: 0000000000000001
[   42.600147][    C6] FS:  0000000000000000(0000) GS:ffff888853d80000(0000) knlGS:0000000000000000
[   42.600147][    C6] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   42.600147][    C6] CR2: 0000000000000000 CR3: 000000087b60a001 CR4: 00000000003706e0
[   42.600147][    C6] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   42.600147][    C6] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   42.600147][    C6] Call Trace:
[   42.600147][    C6]  <TASK>
[ 42.600147][ C6] multi_cpu_stop (kernel/stop_machine.c:230) 
[ 42.600147][ C6] ? stop_machine_yield+0x40/0x40 
[ 42.600147][ C6] cpu_stopper_thread (kernel/stop_machine.c:511) 
[ 42.600147][ C6] ? smpboot_thread_fn (kernel/smpboot.c:112) 
[ 42.600147][ C6] ? find_next_bit (arch/x86/events/intel/core.c:5593) 
[ 42.600147][ C6] smpboot_thread_fn (kernel/smpboot.c:164 (discriminator 4)) 
[ 42.600147][ C6] kthread (kernel/kthread.c:376) 
[ 42.600147][ C6] ? kthread_complete_and_exit (kernel/kthread.c:331) 
[ 42.600147][ C6] ret_from_fork (arch/x86/entry/entry_64.S:306) 
[   42.600147][    C6]  </TASK>
[   42.602146][    C8] watchdog: BUG: soft lockup - CPU#8 stuck for 26s! [migration/8:54]
[   42.602146][    C8] Modules linked in:
[   42.602146][    C8] CPU: 8 PID: 54 Comm: migration/8 Tainted: G             L     6.0.0-rc4-00015-gd0c36de12ed8 #1
[   42.602146][    C8] Hardware name: Dell Inc. OptiPlex 7060/0C96W1, BIOS 1.4.2 06/11/2019
[ 42.602146][ C8] Stopper: multi_cpu_stop+0x0/0x100 <- stop_machine_cpuslocked (kernel/stop_machine.c:429 kernel/stop_machine.c:469 kernel/stop_machine.c:619) 
[ 42.602146][ C8] RIP: stop_machine_yield+0x2/0x40 
[ 42.602146][ C8] Code: 68 65 48 2b 14 25 28 00 00 00 75 11 4c 8b 65 f8 c9 c3 cc cc cc cc b8 fe ff ff ff eb df e8 46 8f b6 00 66 0f 1f 44 00 00 f3 90 <c3> cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 66 66 2e 0f 1f 84
All code
========
   0:	68 65 48 2b 14       	pushq  $0x142b4865
   5:	25 28 00 00 00       	and    $0x28,%eax
   a:	75 11                	jne    0x1d
   c:	4c 8b 65 f8          	mov    -0x8(%rbp),%r12
  10:	c9                   	leaveq 
  11:	c3                   	retq   
  12:	cc                   	int3   
  13:	cc                   	int3   
  14:	cc                   	int3   
  15:	cc                   	int3   
  16:	b8 fe ff ff ff       	mov    $0xfffffffe,%eax
  1b:	eb df                	jmp    0xfffffffffffffffc
  1d:	e8 46 8f b6 00       	callq  0xb68f68
  22:	66 0f 1f 44 00 00    	nopw   0x0(%rax,%rax,1)
  28:	f3 90                	pause  
  2a:*	c3                   	retq   		<-- trapping instruction
  2b:	cc                   	int3   
  2c:	cc                   	int3   
  2d:	cc                   	int3   
  2e:	cc                   	int3   
  2f:	66 66 2e 0f 1f 84 00 	data16 nopw %cs:0x0(%rax,%rax,1)
  36:	00 00 00 00 
  3a:	66                   	data16
  3b:	66                   	data16
  3c:	2e                   	cs
  3d:	0f                   	.byte 0xf
  3e:	1f                   	(bad)  
  3f:	84                   	.byte 0x84

Code starting with the faulting instruction
===========================================
   0:	c3                   	retq   
   1:	cc                   	int3   
   2:	cc                   	int3   
   3:	cc                   	int3   
   4:	cc                   	int3   
   5:	66 66 2e 0f 1f 84 00 	data16 nopw %cs:0x0(%rax,%rax,1)
   c:	00 00 00 00 
  10:	66                   	data16
  11:	66                   	data16
  12:	2e                   	cs
  13:	0f                   	.byte 0xf
  14:	1f                   	(bad)  
  15:	84                   	.byte 0x84
[   42.602146][    C8] RSP: 0000:ffffc9000029be68 EFLAGS: 00000246
[   42.602146][    C8] RAX: ffff888853e2c340 RBX: ffffc90000507d50 RCX: 0000000000000000
[   42.602146][    C8] RDX: 0000000000000004 RSI: 000000000000000c RDI: ffffffff82d8c120
[   42.602146][    C8] RBP: ffffc90000507d74 R08: ffff888853e1e740 R09: 0000000000000000
[   42.602146][    C8] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001
[   42.602146][    C8] R13: ffffffff82d8c120 R14: 0000000000000000 R15: 0000000000000001
[   42.602146][    C8] FS:  0000000000000000(0000) GS:ffff888853e00000(0000) knlGS:0000000000000000
[   42.602146][    C8] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   42.602146][    C8] CR2: 0000000000000000 CR3: 000000087b60a001 CR4: 00000000003706e0
[   42.602146][    C8] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   42.602146][    C8] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   42.602146][    C8] Call Trace:
[   42.602146][    C8]  <TASK>
[ 42.602146][ C8] multi_cpu_stop (kernel/stop_machine.c:230) 
[ 42.602146][ C8] ? stop_machine_yield+0x40/0x40 
[ 42.602146][ C8] cpu_stopper_thread (kernel/stop_machine.c:511) 
[ 42.602146][ C8] ? smpboot_thread_fn (kernel/smpboot.c:112) 
[ 42.602146][ C8] ? find_next_bit (arch/x86/events/intel/core.c:5593) 
[ 42.602146][ C8] smpboot_thread_fn (kernel/smpboot.c:164 (discriminator 4)) 
[ 42.602146][ C8] kthread (kernel/kthread.c:376) 
[ 42.602146][ C8] ? kthread_complete_and_exit (kernel/kthread.c:331) 
[ 42.602146][ C8] ret_from_fork (arch/x86/entry/entry_64.S:306) 
[   42.602146][    C8]  </TASK>
[ 42.553146][ C0] Code: 68 65 48 2b 14 25 28 00 00 00 75 11 4c 8b 65 f8 c9 c3 cc cc cc cc b8 fe ff ff ff eb df e8 46 8f b6 00 66 0f 1f 44 00 00 f3 90 <c3> cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 66 66 2e 0f 1f 84
All code
========
   0:	68 65 48 2b 14       	pushq  $0x142b4865
   5:	25 28 00 00 00       	and    $0x28,%eax
   a:	75 11                	jne    0x1d
   c:	4c 8b 65 f8          	mov    -0x8(%rbp),%r12
  10:	c9                   	leaveq 
  11:	c3                   	retq   
  12:	cc                   	int3   
  13:	cc                   	int3   
  14:	cc                   	int3   
  15:	cc                   	int3   
  16:	b8 fe ff ff ff       	mov    $0xfffffffe,%eax
  1b:	eb df                	jmp    0xfffffffffffffffc
  1d:	e8 46 8f b6 00       	callq  0xb68f68
  22:	66 0f 1f 44 00 00    	nopw   0x0(%rax,%rax,1)
  28:	f3 90                	pause  
  2a:*	c3                   	retq   		<-- trapping instruction
  2b:	cc                   	int3   
  2c:	cc                   	int3   
  2d:	cc                   	int3   
  2e:	cc                   	int3   
  2f:	66 66 2e 0f 1f 84 00 	data16 nopw %cs:0x0(%rax,%rax,1)
  36:	00 00 00 00 
  3a:	66                   	data16
  3b:	66                   	data16
  3c:	2e                   	cs
  3d:	0f                   	.byte 0xf
  3e:	1f                   	(bad)  
  3f:	84                   	.byte 0x84

Code starting with the faulting instruction
===========================================
   0:	c3                   	retq   
   1:	cc                   	int3   
   2:	cc                   	int3   
   3:	cc                   	int3   
   4:	cc                   	int3   
   5:	66 66 2e 0f 1f 84 00 	data16 nopw %cs:0x0(%rax,%rax,1)
   c:	00 00 00 00 
  10:	66                   	data16
  11:	66                   	data16
  12:	2e                   	cs
  13:	0f                   	.byte 0xf
  14:	1f                   	(bad)  
  15:	84                   	.byte 0x84


To reproduce:

        git clone https://github.com/intel/lkp-tests.git
        cd lkp-tests
        sudo bin/lkp install job.yaml           # job file is attached in this email
        bin/lkp split-job --compatible job.yaml # generate the yaml file for lkp run
        sudo bin/lkp run generated-yaml-file

        # if come across any failure that blocks the test,
        # please remove ~/.lkp and /lkp dir to run from a clean state.



-- 
0-DAY CI Kernel Test Service
https://01.org/lkp