======================================
| # 47.08 [+0.00] [  603.720908] br1: port 1(vx10) entered disabled state
| # 47.08 [+0.00] [  661.009203] rcu: INFO: rcu_preempt self-detected stall on CPU
| # 47.09 [+0.00] [  661.009278] rcu: 0-....: (4373 ticks this GP) idle=2fd4/0/0x3 softirq=31715/31715 fqs=5052
| # 47.09 [+0.00] [  661.009328] rcu: (t=21000 jiffies g=62917 q=22 ncpus=4)
# 47.09 [+0.00] [  661.009359] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
# 47.09 [+0.00] [  661.009360] RIP: 0010:rcu_core (kernel/rcu/tree_stall.h:122 kernel/rcu/tree.c:2852)
# 47.09 [+0.00] [  661.009367] Code: 48 85 c0 74 09 48 8b 78 08 e8 f7 f4 fe ff 65 ff 0d c0 69 7f 01 0f 85 71 fe ff ff 0f 1f 44 00 00 e9 67 fe ff ff 3d 2c 01 00 00 <0f> 8e 4b fb ff ff c7 05 ef c2 24 01 2c 01 00 00 e9 3c fb ff ff 4c
All code
========
   0:	48 85 c0             	test   %rax,%rax
   3:	74 09                	je     0xe
   5:	48 8b 78 08          	mov    0x8(%rax),%rdi
   9:	e8 f7 f4 fe ff       	call   0xfffffffffffef505
   e:	65 ff 0d c0 69 7f 01 	decl   %gs:0x17f69c0(%rip)        # 0x17f69d5
  15:	0f 85 71 fe ff ff    	jne    0xfffffffffffffe8c
  1b:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  20:	e9 67 fe ff ff       	jmp    0xfffffffffffffe8c
  25:	3d 2c 01 00 00       	cmp    $0x12c,%eax
  2a:*	0f 8e 4b fb ff ff    	jle    0xfffffffffffffb7b		<-- trapping instruction
  30:	c7 05 ef c2 24 01 2c 	movl   $0x12c,0x124c2ef(%rip)        # 0x124c329
  37:	01 00 00 
  3a:	e9 3c fb ff ff       	jmp    0xfffffffffffffb7b
  3f:	4c                   	rex.WR

Code starting with the faulting instruction
===========================================
   0:	0f 8e 4b fb ff ff    	jle    0xfffffffffffffb51
   6:	c7 05 ef c2 24 01 2c 	movl   $0x12c,0x124c2ef(%rip)        # 0x124c2ff
   d:	01 00 00 
  10:	e9 3c fb ff ff       	jmp    0xfffffffffffffb51
  15:	4c                   	rex.WR
# 47.10 [+0.00] [  661.009368] RSP: 0018:ff66a6f780003f18 EFLAGS: 00000293
# 47.10 [+0.00] [  661.009371] RAX: 0000000000000015 RBX: ff46546d2c213000 RCX: 400000000000f5c4
# 47.10 [+0.00] [  661.009372] RDX: 000000000000f5c5 RSI: 0000000000000292 RDI: ffffffff9235b240
# 47.10 [+0.00] [  661.009372] RBP: ff46546cbec29940 R08: 0000000000000000 R09: ff46546cbec19de0
# 47.10 [+0.00] [  661.009373] R10: ffffffff922080c0 R11: 000000000002021c R12: ffffffff9220c980
# 47.10 [+0.00] [  661.009373] R13: ffffffff9235b240 R14: 0000000000000101 R15: 0000000000000009
# 47.10 [+0.00] [  661.009377] FS:  0000000000000000(0000) GS:ff46546d2c213000(0000) knlGS:0000000000000000
# 47.11 [+0.00] [  661.009378] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
# 47.11 [+0.00] [  661.009379] CR2: 00007f810884aff0 CR3: 0000000005441001 CR4: 0000000000771ef0
# 47.11 [+0.00] [  661.009379] PKRU: 55555554
# 47.11 [+0.00] [  661.009380] Call Trace:
# 47.11 [+0.00] [  661.009382]  <IRQ>
# 47.11 [+0.00] [  661.009385]  handle_softirqs (./arch/x86/include/asm/jump_label.h:37 ./include/trace/events/irq.h:142 kernel/softirq.c:623)
# 47.11 [+0.00] [  661.009396]  irq_exit_rcu (kernel/softirq.c:657 kernel/softirq.c:496 kernel/softirq.c:723 kernel/softirq.c:739)
# 47.11 [+0.00] [  661.009398]  sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1056 (discriminator 47) arch/x86/kernel/apic/apic.c:1056 (discriminator 47))
# 47.11 [+0.00] [  661.009402]  </IRQ>
# 47.11 [+0.00] [  661.009402]  <TASK>
# 47.11 [+0.00] [  661.009403]  asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:697)
# 47.11 [+0.00] [  661.009405] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82)
# 47.12 [+0.00] [  661.009407] Code: 48 8b 3d 74 5a ea 00 e8 1f 00 00 00 48 2b 05 28 91 47 00 c3 0f 1f 80 00 00 00 00 f3 0f 1e fa eb 07 0f 00 2d a5 48 0c 00 fb f4 <c3> 0f 1f 40 d6 8b 17 89 d6 83 e6 fe 0f 01 f9 66 90 48 c1 e2 20 48
All code
========
   0:	48 8b 3d 74 5a ea 00 	mov    0xea5a74(%rip),%rdi        # 0xea5a7b
   7:	e8 1f 00 00 00       	call   0x2b
   c:	48 2b 05 28 91 47 00 	sub    0x479128(%rip),%rax        # 0x47913b
  13:	c3                   	ret
  14:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  1b:	f3 0f 1e fa          	endbr64
  1f:	eb 07                	jmp    0x28
  21:	0f 00 2d a5 48 0c 00 	verw   0xc48a5(%rip)        # 0xc48cd
  28:	fb                   	sti
  29:	f4                   	hlt
  2a:*	c3                   	ret		<-- trapping instruction
  2b:	0f 1f 40 d6          	nopl   -0x2a(%rax)
  2f:	8b 17                	mov    (%rdi),%edx
  31:	89 d6                	mov    %edx,%esi
  33:	83 e6 fe             	and    $0xfffffffe,%esi
  36:	0f 01 f9             	rdtscp
  39:	66 90                	xchg   %ax,%ax
  3b:	48 c1 e2 20          	shl    $0x20,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	c3                   	ret
   1:	0f 1f 40 d6          	nopl   -0x2a(%rax)
   5:	8b 17                	mov    (%rdi),%edx
   7:	89 d6                	mov    %edx,%esi
   9:	83 e6 fe             	and    $0xfffffffe,%esi
   c:	0f 01 f9             	rdtscp
   f:	66 90                	xchg   %ax,%ax
  11:	48 c1 e2 20          	shl    $0x20,%rdx
  15:	48                   	rex.W
# 47.12 [+0.00] [  661.009407] RSP: 0018:ffffffff92203e80 EFLAGS: 00000212
# 47.12 [+0.00] [  661.009408] RAX: ff46546d2c213000 RBX: ffffffff9220c980 RCX: 0000000000000000
# 47.12 [+0.00] [  661.009408] RDX: 4000000000000000 RSI: 0000000000000000 RDI: 0000000000cc2f4c
# 47.12 [+0.00] [  661.009409] RBP: 0000000000000000 R08: 0000000000cc2f4c R09: ff46546cbec24990
# 47.12 [+0.00] [  661.009409] R10: 0000000000000001 R11: 000000000049e4ab R12: 0000000000000000
# 47.13 [+0.00] [  661.009409] R13: 0000000000000000 R14: ffffffff9220c098 R15: 0000000000014770
# 47.13 [+0.00] [  661.009411]  default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:767)
# 47.13 [+0.00] [  661.009412]  default_idle_call (./include/linux/cpuidle.h:144 kernel/sched/idle.c:123)
# 47.13 [+0.00] [  661.009413]  do_idle (kernel/sched/idle.c:192 kernel/sched/idle.c:332)
# 47.13 [+0.00] [  661.009416]  cpu_startup_entry (kernel/sched/idle.c:429)
# 47.13 [+0.00] [  661.009417]  rest_init (init/main.c:757)
# 47.13 [+0.00] [  661.009419]  start_kernel (init/main.c:1111)
# 47.13 [+0.00] [  661.009424]  x86_64_start_reservations (arch/x86/kernel/head64.c:310)
# 47.13 [+0.00] [  661.009426]  x86_64_start_kernel (??:?)
# 47.13 [+0.00] [  661.009427]  common_startup_64 (arch/x86/kernel/head_64.S:419)
| 0
| xx__-> [  661.009203] rcu: INFO: rcu_preempt self-detected stall on CPU
| [  661.009278] rcu: 0-....: (4373 ticks this GP) idle=2fd4/0/0x3 softirq=31715/31715 fqs=5052
| [  661.009328] rcu: (t=21000 jiffies g=62917 q=22 ncpus=4)
[  661.009359] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  661.009360] RIP: 0010:rcu_core (kernel/rcu/tree_stall.h:122 kernel/rcu/tree.c:2852)
[  661.009367] Code: 48 85 c0 74 09 48 8b 78 08 e8 f7 f4 fe ff 65 ff 0d c0 69 7f 01 0f 85 71 fe ff ff 0f 1f 44 00 00 e9 67 fe ff ff 3d 2c 01 00 00 <0f> 8e 4b fb ff ff c7 05 ef c2 24 01 2c 01 00 00 e9 3c fb ff ff 4c
All code
========
   0:	48 85 c0             	test   %rax,%rax
   3:	74 09                	je     0xe
   5:	48 8b 78 08          	mov    0x8(%rax),%rdi
   9:	e8 f7 f4 fe ff       	call   0xfffffffffffef505
   e:	65 ff 0d c0 69 7f 01 	decl   %gs:0x17f69c0(%rip)        # 0x17f69d5
  15:	0f 85 71 fe ff ff    	jne    0xfffffffffffffe8c
  1b:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  20:	e9 67 fe ff ff       	jmp    0xfffffffffffffe8c
  25:	3d 2c 01 00 00       	cmp    $0x12c,%eax
  2a:*	0f 8e 4b fb ff ff    	jle    0xfffffffffffffb7b		<-- trapping instruction
  30:	c7 05 ef c2 24 01 2c 	movl   $0x12c,0x124c2ef(%rip)        # 0x124c329
  37:	01 00 00 
  3a:	e9 3c fb ff ff       	jmp    0xfffffffffffffb7b
  3f:	4c                   	rex.WR

Code starting with the faulting instruction
===========================================
   0:	0f 8e 4b fb ff ff    	jle    0xfffffffffffffb51
   6:	c7 05 ef c2 24 01 2c 	movl   $0x12c,0x124c2ef(%rip)        # 0x124c2ff
   d:	01 00 00 
  10:	e9 3c fb ff ff       	jmp    0xfffffffffffffb51
  15:	4c                   	rex.WR
[  661.009368] RSP: 0018:ff66a6f780003f18 EFLAGS: 00000293
[  661.009371] RAX: 0000000000000015 RBX: ff46546d2c213000 RCX: 400000000000f5c4
[  661.009372] RDX: 000000000000f5c5 RSI: 0000000000000292 RDI: ffffffff9235b240
[  661.009372] RBP: ff46546cbec29940 R08: 0000000000000000 R09: ff46546cbec19de0
[  661.009373] R10: ffffffff922080c0 R11: 000000000002021c R12: ffffffff9220c980
[  661.009373] R13: ffffffff9235b240 R14: 0000000000000101 R15: 0000000000000009
[  661.009377] FS:  0000000000000000(0000) GS:ff46546d2c213000(0000) knlGS:0000000000000000
[  661.009378] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  661.009379] CR2: 00007f810884aff0 CR3: 0000000005441001 CR4: 0000000000771ef0
[  661.009379] PKRU: 55555554
[  661.009380] Call Trace:
[  661.009382]  <IRQ>
[  661.009385]  handle_softirqs (./arch/x86/include/asm/jump_label.h:37 ./include/trace/events/irq.h:142 kernel/softirq.c:623)
[  661.009396]  irq_exit_rcu (kernel/softirq.c:657 kernel/softirq.c:496 kernel/softirq.c:723 kernel/softirq.c:739)
[  661.009398]  sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1056 (discriminator 47) arch/x86/kernel/apic/apic.c:1056 (discriminator 47))
[  661.009402]  </IRQ>
[  661.009402]  <TASK>
[  661.009403]  asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:697)
[  661.009405] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82)
[  661.009407] Code: 48 8b 3d 74 5a ea 00 e8 1f 00 00 00 48 2b 05 28 91 47 00 c3 0f 1f 80 00 00 00 00 f3 0f 1e fa eb 07 0f 00 2d a5 48 0c 00 fb f4 <c3> 0f 1f 40 d6 8b 17 89 d6 83 e6 fe 0f 01 f9 66 90 48 c1 e2 20 48
All code
========
   0:	48 8b 3d 74 5a ea 00 	mov    0xea5a74(%rip),%rdi        # 0xea5a7b
   7:	e8 1f 00 00 00       	call   0x2b
   c:	48 2b 05 28 91 47 00 	sub    0x479128(%rip),%rax        # 0x47913b
  13:	c3                   	ret
  14:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  1b:	f3 0f 1e fa          	endbr64
  1f:	eb 07                	jmp    0x28
  21:	0f 00 2d a5 48 0c 00 	verw   0xc48a5(%rip)        # 0xc48cd
  28:	fb                   	sti
  29:	f4                   	hlt
  2a:*	c3                   	ret		<-- trapping instruction
  2b:	0f 1f 40 d6          	nopl   -0x2a(%rax)
  2f:	8b 17                	mov    (%rdi),%edx
  31:	89 d6                	mov    %edx,%esi
  33:	83 e6 fe             	and    $0xfffffffe,%esi
  36:	0f 01 f9             	rdtscp
  39:	66 90                	xchg   %ax,%ax
  3b:	48 c1 e2 20          	shl    $0x20,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	c3                   	ret
   1:	0f 1f 40 d6          	nopl   -0x2a(%rax)
   5:	8b 17                	mov    (%rdi),%edx
   7:	89 d6                	mov    %edx,%esi
   9:	83 e6 fe             	and    $0xfffffffe,%esi
   c:	0f 01 f9             	rdtscp
   f:	66 90                	xchg   %ax,%ax
  11:	48 c1 e2 20          	shl    $0x20,%rdx
  15:	48                   	rex.W
[  661.009407] RSP: 0018:ffffffff92203e80 EFLAGS: 00000212
[  661.009408] RAX: ff46546d2c213000 RBX: ffffffff9220c980 RCX: 0000000000000000
[  661.009408] RDX: 4000000000000000 RSI: 0000000000000000 RDI: 0000000000cc2f4c
[  661.009409] RBP: 0000000000000000 R08: 0000000000cc2f4c R09: ff46546cbec24990
[  661.009409] R10: 0000000000000001 R11: 000000000049e4ab R12: 0000000000000000
[  661.009409] R13: 0000000000000000 R14: ffffffff9220c098 R15: 0000000000014770
[  661.009411]  default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:767)
[  661.009412]  default_idle_call (./include/linux/cpuidle.h:144 kernel/sched/idle.c:123)
[  661.009413]  do_idle (kernel/sched/idle.c:192 kernel/sched/idle.c:332)
[  661.009416]  cpu_startup_entry (kernel/sched/idle.c:429)
[  661.009417]  rest_init (init/main.c:757)
[  661.009419]  start_kernel (init/main.c:1111)
[  661.009424]  x86_64_start_reservations (arch/x86/kernel/head64.c:310)
[  661.009426]  x86_64_start_kernel (??:?)


Finger prints:
rcu_core:handle_softirqs:irq_exit_rcu:sysvec_apic_timer_interrupt:asm_sysvec_apic_timer_interrupt