======================================
| # 45.00 [+0.00] [  379.072927] clocksource: Long readout interval, skipping watchdog check: cs_nsec: 3219470398 wd_nsec: 3219470630
| # 45.00 [+0.00] [  395.393133] rcu: INFO: rcu_preempt self-detected stall on CPU
| # 45.00 [+0.00] [  395.393219] rcu: 0-....: (19495 ticks this GP) idle=1e8c/1/0x4000000000000000 softirq=18298/18299 fqs=5246
| # 45.01 [+0.00] [  395.393269] rcu: (t=21000 jiffies g=39061 q=56 ncpus=4)
# 45.01 [+0.00] [  395.393301] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
# 45.01 [+0.00] [  395.393302] Workqueue:  0x0 (events)
# 45.01 [+0.00] [  395.393309] RIP: 0010:handle_softirqs (./arch/x86/include/asm/bitops.h:312 kernel/softirq.c:610)
# 45.01 [+0.00] [  395.393314] Code: 01 00 01 00 00 89 5c 24 14 48 89 6c 24 08 c7 44 24 10 0a 00 00 00 89 7c 24 04 31 c0 65 66 89 05 4c f1 88 01 fb bb ff ff ff ff <49> c7 c2 c0 80 e0 8b 44 89 ed 41 0f bc dd 83 c3 01 74 71 8d 43 ff
All code
========
   0:	01 00                	add    %eax,(%rax)
   2:	01 00                	add    %eax,(%rax)
   4:	00 89 5c 24 14 48    	add    %cl,0x4814245c(%rcx)
   a:	89 6c 24 08          	mov    %ebp,0x8(%rsp)
   e:	c7 44 24 10 0a 00 00 	movl   $0xa,0x10(%rsp)
  15:	00 
  16:	89 7c 24 04          	mov    %edi,0x4(%rsp)
  1a:	31 c0                	xor    %eax,%eax
  1c:	65 66 89 05 4c f1 88 	mov    %ax,%gs:0x188f14c(%rip)        # 0x188f170
  23:	01 
  24:	fb                   	sti
  25:	bb ff ff ff ff       	mov    $0xffffffff,%ebx
  2a:*	49 c7 c2 c0 80 e0 8b 	mov    $0xffffffff8be080c0,%r10		<-- trapping instruction
  31:	44 89 ed             	mov    %r13d,%ebp
  34:	41 0f bc dd          	bsf    %r13d,%ebx
  38:	83 c3 01             	add    $0x1,%ebx
  3b:	74 71                	je     0xae
  3d:	8d 43 ff             	lea    -0x1(%rbx),%eax

Code starting with the faulting instruction
===========================================
   0:	49 c7 c2 c0 80 e0 8b 	mov    $0xffffffff8be080c0,%r10
   7:	44 89 ed             	mov    %r13d,%ebp
   a:	41 0f bc dd          	bsf    %r13d,%ebx
   e:	83 c3 01             	add    $0x1,%ebx
  11:	74 71                	je     0x84
  13:	8d 43 ff             	lea    -0x1(%rbx),%eax
# 45.01 [+0.00] [  395.393315] RSP: 0018:ff7bc35140003f98 EFLAGS: 00000246
# 45.02 [+0.00] [  395.393316] RAX: 0000000000000000 RBX: 00000000ffffffff RCX: 0000000100013bd9
# 45.02 [+0.00] [  395.393317] RDX: 0000000000000001 RSI: ff3d391c0124db00 RDI: 0000000000000000
# 45.02 [+0.00] [  395.393318] RBP: 0000000100013bdb R08: de3a65ffed2da784 R09: 1a6967f3355a2c4e
# 45.02 [+0.00] [  395.393318] R10: 0000000000000000 R11: ff7bc35140003ff8 R12: 0000000000000000
# 45.02 [+0.00] [  395.393318] R13: 0000000000000282 R14: 0000000000000000 R15: 0000000000000000
# 45.02 [+0.00] [  395.393322] FS:  0000000000000000(0000) GS:ff3d391cb260d000(0000) knlGS:0000000000000000
# 45.02 [+0.00] [  395.393323] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
# 45.03 [+0.00] [  395.393323] CR2: 000055f4a7999000 CR3: 0000000021841005 CR4: 0000000000771ef0
# 45.03 [+0.00] [  395.393324] PKRU: 55555554
# 45.03 [+0.00] [  395.393324] Call Trace:
# 45.03 [+0.00] [  395.393327]  <IRQ>
# 45.03 [+0.00] [  395.393329]  ? handle_edge_irq (kernel/irq/chip.c:857)
# 45.03 [+0.00] [  395.393332]  irq_exit_rcu (kernel/softirq.c:657 kernel/softirq.c:496 kernel/softirq.c:723 kernel/softirq.c:739)
# 45.03 [+0.00] [  395.393334]  common_interrupt (arch/x86/kernel/irq.c:319 (discriminator 49))
# 45.03 [+0.00] [  395.393338]  </IRQ>
# 45.03 [+0.00] [  395.393338]  <TASK>
# 45.03 [+0.00] [  395.393338]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
# 45.03 [+0.00] [  395.393341] RIP: 0010:finish_task_switch.isra.0 (kernel/sched/core.c:5137)
# 45.03 [+0.00] [  395.393343] Code: 00 0f 1f 44 00 00 41 c7 44 24 34 00 00 00 00 4c 8b bb 58 0a 00 00 4d 85 ff 0f 85 7f 01 00 00 48 89 df e8 95 bd 9c 00 fb 66 90 <4d> 85 ed 74 18 4d 3b ae 18 05 00 00 0f 84 c1 00 00 00 f0 41 ff 4d
All code
========
   0:	00 0f                	add    %cl,(%rdi)
   2:	1f                   	(bad)
   3:	44 00 00             	add    %r8b,(%rax)
   6:	41 c7 44 24 34 00 00 	movl   $0x0,0x34(%r12)
   d:	00 00 
   f:	4c 8b bb 58 0a 00 00 	mov    0xa58(%rbx),%r15
  16:	4d 85 ff             	test   %r15,%r15
  19:	0f 85 7f 01 00 00    	jne    0x19e
  1f:	48 89 df             	mov    %rbx,%rdi
  22:	e8 95 bd 9c 00       	call   0x9cbdbc
  27:	fb                   	sti
  28:	66 90                	xchg   %ax,%ax
  2a:*	4d 85 ed             	test   %r13,%r13		<-- trapping instruction
  2d:	74 18                	je     0x47
  2f:	4d 3b ae 18 05 00 00 	cmp    0x518(%r14),%r13
  36:	0f 84 c1 00 00 00    	je     0xfd
  3c:	f0                   	lock
  3d:	41                   	rex.B
  3e:	ff                   	.byte 0xff
  3f:	4d                   	rex.WRB

Code starting with the faulting instruction
===========================================
   0:	4d 85 ed             	test   %r13,%r13
   3:	74 18                	je     0x1d
   5:	4d 3b ae 18 05 00 00 	cmp    0x518(%r14),%r13
   c:	0f 84 c1 00 00 00    	je     0xd3
  12:	f0                   	lock
  13:	41                   	rex.B
  14:	ff                   	.byte 0xff
  15:	4d                   	rex.WRB
# 45.04 [+0.00] [  395.393344] RSP: 0018:ff7bc35140057de0 EFLAGS: 00000282
# 45.04 [+0.00] [  395.393344] RAX: 0000000000000000 RBX: ff3d391c3ec28d40 RCX: 0000000000000002
# 45.04 [+0.00] [  395.393345] RDX: 0000000000000000 RSI: 0000000055555554 RDI: ff3d391c3ec28d40
# 45.04 [+0.00] [  395.393345] RBP: ff7bc35140057e10 R08: 0000000000000001 R09: 0000000000000000
# 45.04 [+0.00] [  395.393345] R10: 000000000000b879 R11: 000000000000b879 R12: ff3d391c0124c440
# 45.04 [+0.00] [  395.393346] R13: 0000000000000000 R14: ff3d391c0124db00 R15: 0000000000000000
# 45.05 [+0.00] [  395.393347]  __schedule (kernel/sched/core.c:5259)
# 45.05 [+0.00] [  395.393349]  schedule (./arch/x86/include/asm/preempt.h:85 (discriminator 14) kernel/sched/core.c:6946 (discriminator 14) kernel/sched/core.c:6960 (discriminator 14))
# 45.05 [+0.00] [  395.393350]  worker_thread (kernel/workqueue.c:3374)
# 45.05 [+0.00] [  395.393353]  ? bh_worker (kernel/workqueue.c:3367)
# 45.05 [+0.00] [  395.393354]  kthread (kernel/kthread.c:463)
# 45.05 [+0.00] [  395.393355]  ? kthreads_online_cpu (kernel/kthread.c:412)
# 45.05 [+0.00] [  395.393356]  ? kthreads_online_cpu (kernel/kthread.c:412)
# 45.05 [+0.00] [  395.393357]  ret_from_fork (arch/x86/kernel/process.c:164)
# 45.05 [+0.00] [  395.393359]  ? kthreads_online_cpu (kernel/kthread.c:412)
# 45.05 [+0.00] [  395.393360]  ret_from_fork_asm (arch/x86/entry/entry_64.S:256)
| [  379.072927] clocksource: Long readout interval, skipping watchdog check: cs_nsec: 3219470398 wd_nsec: 3219470630
| [  395.393133] rcu: INFO: rcu_preempt self-detected stall on CPU
| [  395.393219] rcu: 0-....: (19495 ticks this GP) idle=1e8c/1/0x4000000000000000 softirq=18298/18299 fqs=5246
| [  395.393269] rcu: (t=21000 jiffies g=39061 q=56 ncpus=4)
[  395.393301] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  395.393302] Workqueue:  0x0 (events)
[  395.393309] RIP: 0010:handle_softirqs (./arch/x86/include/asm/bitops.h:312 kernel/softirq.c:610)
[  395.393314] Code: 01 00 01 00 00 89 5c 24 14 48 89 6c 24 08 c7 44 24 10 0a 00 00 00 89 7c 24 04 31 c0 65 66 89 05 4c f1 88 01 fb bb ff ff ff ff <49> c7 c2 c0 80 e0 8b 44 89 ed 41 0f bc dd 83 c3 01 74 71 8d 43 ff
All code
========
   0:	01 00                	add    %eax,(%rax)
   2:	01 00                	add    %eax,(%rax)
   4:	00 89 5c 24 14 48    	add    %cl,0x4814245c(%rcx)
   a:	89 6c 24 08          	mov    %ebp,0x8(%rsp)
   e:	c7 44 24 10 0a 00 00 	movl   $0xa,0x10(%rsp)
  15:	00 
  16:	89 7c 24 04          	mov    %edi,0x4(%rsp)
  1a:	31 c0                	xor    %eax,%eax
  1c:	65 66 89 05 4c f1 88 	mov    %ax,%gs:0x188f14c(%rip)        # 0x188f170
  23:	01 
  24:	fb                   	sti
  25:	bb ff ff ff ff       	mov    $0xffffffff,%ebx
  2a:*	49 c7 c2 c0 80 e0 8b 	mov    $0xffffffff8be080c0,%r10		<-- trapping instruction
  31:	44 89 ed             	mov    %r13d,%ebp
  34:	41 0f bc dd          	bsf    %r13d,%ebx
  38:	83 c3 01             	add    $0x1,%ebx
  3b:	74 71                	je     0xae
  3d:	8d 43 ff             	lea    -0x1(%rbx),%eax

Code starting with the faulting instruction
===========================================
   0:	49 c7 c2 c0 80 e0 8b 	mov    $0xffffffff8be080c0,%r10
   7:	44 89 ed             	mov    %r13d,%ebp
   a:	41 0f bc dd          	bsf    %r13d,%ebx
   e:	83 c3 01             	add    $0x1,%ebx
  11:	74 71                	je     0x84
  13:	8d 43 ff             	lea    -0x1(%rbx),%eax
[  395.393315] RSP: 0018:ff7bc35140003f98 EFLAGS: 00000246
[  395.393316] RAX: 0000000000000000 RBX: 00000000ffffffff RCX: 0000000100013bd9
[  395.393317] RDX: 0000000000000001 RSI: ff3d391c0124db00 RDI: 0000000000000000
[  395.393318] RBP: 0000000100013bdb R08: de3a65ffed2da784 R09: 1a6967f3355a2c4e
[  395.393318] R10: 0000000000000000 R11: ff7bc35140003ff8 R12: 0000000000000000
[  395.393318] R13: 0000000000000282 R14: 0000000000000000 R15: 0000000000000000
[  395.393322] FS:  0000000000000000(0000) GS:ff3d391cb260d000(0000) knlGS:0000000000000000
[  395.393323] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  395.393323] CR2: 000055f4a7999000 CR3: 0000000021841005 CR4: 0000000000771ef0
[  395.393324] PKRU: 55555554
[  395.393324] Call Trace:
[  395.393327]  <IRQ>
[  395.393329]  ? handle_edge_irq (kernel/irq/chip.c:857)
[  395.393332]  irq_exit_rcu (kernel/softirq.c:657 kernel/softirq.c:496 kernel/softirq.c:723 kernel/softirq.c:739)
[  395.393334]  common_interrupt (arch/x86/kernel/irq.c:319 (discriminator 49))
[  395.393338]  </IRQ>
[  395.393338]  <TASK>
[  395.393338]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[  395.393341] RIP: 0010:finish_task_switch.isra.0 (kernel/sched/core.c:5137)
[  395.393343] Code: 00 0f 1f 44 00 00 41 c7 44 24 34 00 00 00 00 4c 8b bb 58 0a 00 00 4d 85 ff 0f 85 7f 01 00 00 48 89 df e8 95 bd 9c 00 fb 66 90 <4d> 85 ed 74 18 4d 3b ae 18 05 00 00 0f 84 c1 00 00 00 f0 41 ff 4d
All code
========
   0:	00 0f                	add    %cl,(%rdi)
   2:	1f                   	(bad)
   3:	44 00 00             	add    %r8b,(%rax)
   6:	41 c7 44 24 34 00 00 	movl   $0x0,0x34(%r12)
   d:	00 00 
   f:	4c 8b bb 58 0a 00 00 	mov    0xa58(%rbx),%r15
  16:	4d 85 ff             	test   %r15,%r15
  19:	0f 85 7f 01 00 00    	jne    0x19e
  1f:	48 89 df             	mov    %rbx,%rdi
  22:	e8 95 bd 9c 00       	call   0x9cbdbc
  27:	fb                   	sti
  28:	66 90                	xchg   %ax,%ax
  2a:*	4d 85 ed             	test   %r13,%r13		<-- trapping instruction
  2d:	74 18                	je     0x47
  2f:	4d 3b ae 18 05 00 00 	cmp    0x518(%r14),%r13
  36:	0f 84 c1 00 00 00    	je     0xfd
  3c:	f0                   	lock
  3d:	41                   	rex.B
  3e:	ff                   	.byte 0xff
  3f:	4d                   	rex.WRB

Code starting with the faulting instruction
===========================================
   0:	4d 85 ed             	test   %r13,%r13
   3:	74 18                	je     0x1d
   5:	4d 3b ae 18 05 00 00 	cmp    0x518(%r14),%r13
   c:	0f 84 c1 00 00 00    	je     0xd3
  12:	f0                   	lock
  13:	41                   	rex.B
  14:	ff                   	.byte 0xff
  15:	4d                   	rex.WRB
[  395.393344] RSP: 0018:ff7bc35140057de0 EFLAGS: 00000282
[  395.393344] RAX: 0000000000000000 RBX: ff3d391c3ec28d40 RCX: 0000000000000002
[  395.393345] RDX: 0000000000000000 RSI: 0000000055555554 RDI: ff3d391c3ec28d40
[  395.393345] RBP: ff7bc35140057e10 R08: 0000000000000001 R09: 0000000000000000
[  395.393345] R10: 000000000000b879 R11: 000000000000b879 R12: ff3d391c0124c440
[  395.393346] R13: 0000000000000000 R14: ff3d391c0124db00 R15: 0000000000000000
[  395.393347]  __schedule (kernel/sched/core.c:5259)
[  395.393349]  schedule (./arch/x86/include/asm/preempt.h:85 (discriminator 14) kernel/sched/core.c:6946 (discriminator 14) kernel/sched/core.c:6960 (discriminator 14))
[  395.393350]  worker_thread (kernel/workqueue.c:3374)
[  395.393353]  ? bh_worker (kernel/workqueue.c:3367)
[  395.393354]  kthread (kernel/kthread.c:463)
[  395.393355]  ? kthreads_online_cpu (kernel/kthread.c:412)
[  395.393356]  ? kthreads_online_cpu (kernel/kthread.c:412)
[  395.393357]  ret_from_fork (arch/x86/kernel/process.c:164)
[  395.393359]  ? kthreads_online_cpu (kernel/kthread.c:412)


Finger prints:
handle_softirqs:irq_exit_rcu:common_interrupt:asm_common_interrupt:__schedule