======================================
| # 85.63 [+0.00] [  883.304325] vx10: left promiscuous mode
| # 85.63 [+0.00] [  883.304673] br1: port 1(vx10) entered disabled state
| # 85.63 [+0.00] [  903.887383] Mirror/redirect action on
| # 85.63 [+0.00] [  922.680410] irq 51: nobody cared (try booting with the "irqpoll" option)
# 85.63 [+0.00] [  922.681173] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
# 85.63 [+0.00] [  922.681415] Call Trace:
# 85.63 [+0.00] [  922.681558]  <IRQ>
# 85.64 [+0.00] [  922.681651] dump_stack_lvl (lib/dump_stack.c:123)
# 85.64 [+0.00] [  922.681849] __report_bad_irq (kernel/irq/spurious.c:214)
# 85.64 [+0.00] [  922.682027] note_interrupt (kernel/irq/spurious.c:423)
# 85.64 [+0.00] [  922.682199] handle_irq_event (kernel/irq/handle.c:198 kernel/irq/handle.c:210)
# 85.64 [+0.00] [  922.682366] handle_edge_irq (kernel/irq/chip.c:833)
# 85.64 [+0.00] [  922.682541] __common_interrupt (./include/linux/irqdesc.h:173 arch/x86/kernel/irq.c:247 arch/x86/kernel/irq.c:259 arch/x86/kernel/irq.c:285)
# 85.64 [+0.00] [  922.682714] common_interrupt (arch/x86/kernel/irq.c:278 (discriminator 14))
# 85.64 [+0.00] [  922.682892]  </IRQ>
# 85.64 [+0.00] [  922.682988]  <TASK>
# 85.64 [+0.00] [  922.683078] asm_common_interrupt (./arch/x86/include/asm/idtentry.h:693)
# 85.65 [+0.00] [  922.683266] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194)
# 85.65 [+0.00] [ 922.683508] Code: 10 e8 61 0b 8c fd 48 89 ef e8 19 80 8c fd 81 e3 00 02 00 00 75 1d 9c 58 f6 c4 02 75 29 48 85 db 74 01 fb 65 ff 0d 55 05 34 72 <74> 0e 5b 5d c3 cc cc cc cc e8 0f c8 b1 fd eb dc 0f 1f 44 00 00 5b
All code
========
   0:	10 e8                	adc    %ch,%al
   2:	61                   	(bad)
   3:	0b 8c fd 48 89 ef e8 	or     -0x171076b8(%rbp,%rdi,8),%ecx
   a:	19 80 8c fd 81 e3    	sbb    %eax,-0x1c7e0274(%rax)
  10:	00 02                	add    %al,(%rdx)
  12:	00 00                	add    %al,(%rax)
  14:	75 1d                	jne    0x33
  16:	9c                   	pushf
  17:	58                   	pop    %rax
  18:	f6 c4 02             	test   $0x2,%ah
  1b:	75 29                	jne    0x46
  1d:	48 85 db             	test   %rbx,%rbx
  20:	74 01                	je     0x23
  22:	fb                   	sti
  23:	65 ff 0d 55 05 34 72 	decl   %gs:0x72340555(%rip)        # 0x7234057f
  2a:*	74 0e                	je     0x3a		<-- trapping instruction
  2c:	5b                   	pop    %rbx
  2d:	5d                   	pop    %rbp
  2e:	c3                   	ret
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	cc                   	int3
  33:	e8 0f c8 b1 fd       	call   0xfffffffffdb1c847
  38:	eb dc                	jmp    0x16
  3a:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  3f:	5b                   	pop    %rbx

Code starting with the faulting instruction
===========================================
   0:	74 0e                	je     0x10
   2:	5b                   	pop    %rbx
   3:	5d                   	pop    %rbp
   4:	c3                   	ret
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	cc                   	int3
   9:	e8 0f c8 b1 fd       	call   0xfffffffffdb1c81d
   e:	eb dc                	jmp    0xffffffffffffffec
  10:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  15:	5b                   	pop    %rbx
# 85.65 [+0.00] [  922.684097] RSP: 0018:ffffc9000bb07aa0 EFLAGS: 00000286
# 85.65 [+0.00] [  922.684315] RAX: 0000000000000006 RBX: 0000000000000200 RCX: 1ffffffff22049b2
# 85.65 [+0.00] [  922.684575] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8dcfbfc1
# 85.66 [+0.00] [  922.684847] RBP: ffffffff918eb800 R08: 0000000000000001 R09: fffffbfff21fffef
# 85.66 [+0.00] [  922.685096] R10: ffffffff90ffff7f R11: ffff888004f5c5c0 R12: 00000000ffffffff
# 85.66 [+0.00] [  922.685360] R13: 0000000000000001 R14: ffffffff918eb908 R15: 00000000ffffffff
# 85.66 [+0.00] [  922.685633] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194)
# 85.66 [+0.00] [  922.685903] uart_write (drivers/tty/serial/serial_core.c:74 drivers/tty/serial/serial_core.c:636)
# 85.67 [+0.01] [  922.686042] process_output_block (drivers/tty/n_tty.c:574)
# 85.67 [+0.00] [  922.686211] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406)
# 85.67 [+0.00] [  922.686424] n_tty_write (drivers/tty/n_tty.c:2390)
# 85.68 [+0.00] [  922.686597] ? __pfx_n_tty_write (drivers/tty/n_tty.c:2360)
# 85.68 [+0.00] [  922.686771] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 37))
# 85.68 [+0.00] [  922.686946] ? __pfx_woken_wake_function (kernel/sched/wait.c:439)
# 85.68 [+0.00] [  922.687116] ? lock_acquire (kernel/locking/lockdep.c:5822)
# 85.68 [+0.00] [  922.687285] ? iterate_tty_write (drivers/tty/tty_io.c:948 drivers/tty/tty_io.c:967)
# 85.68 [+0.00] [  922.687492] iterate_tty_write (drivers/tty/tty_io.c:1015)
# 85.68 [+0.00] [  922.687664] ? tty_ldisc_ref_wait (drivers/tty/tty_ldisc.c:244)
# 85.68 [+0.00] [  922.687836] file_tty_write.constprop.0 (drivers/tty/tty_io.c:1090)
# 85.68 [+0.00] [  922.688085] vfs_write (fs/read_write.c:586 fs/read_write.c:679)
# 85.69 [+0.00] [  922.688223] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5814)
# 85.69 [+0.00] [  922.688400] ? __pfx_vfs_write (fs/read_write.c:660)
# 85.69 [+0.00] [  922.688574] ? clockevents_program_event (kernel/time/clockevents.c:326)
# 85.69 [+0.00] [  922.688754] ? clockevents_program_event (kernel/time/clockevents.c:334 (discriminator 3))
# 85.69 [+0.00] [  922.688963] ksys_write (fs/read_write.c:731)
# 85.69 [+0.00] [  922.689093] ? __pfx_ksys_write (fs/read_write.c:721)
# 85.69 [+0.00] [  922.689269] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83)
# 85.69 [+0.00] [  922.689448] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
# 85.69 [+0.00] [  922.689657] RIP: 0033:0x7f7eaa5dcb77
# 85.70 [+0.00] [ 922.689831] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
# 85.70 [+0.00] [  922.690411] RSP: 002b:00007ffdbdb517a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
# 85.70 [+0.00] [  922.690672] RAX: ffffffffffffffda RBX: 0000565038af43f0 RCX: 00007f7eaa5dcb77
# 85.70 [+0.00] [  922.690921] RDX: 0000000000000001 RSI: 0000565038af43f0 RDI: 0000000000000001
# 85.71 [+0.00] [  922.691174] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000002000
# 85.71 [+0.00] [  922.691427] R10: 0000000000000001 R11: 0000000000000246 R12: 0000565038adf5e0
# 85.71 [+0.00] [  922.691688] R13: 0000565038ac02a0 R14: 0000000000000001 R15: 0000565038adf5e0
| xx__-> echo $?
| 0
| xx__-> [  903.887383][T10785] Mirror/redirect action on
| [  922.680410][    C0] irq 51: nobody cared (try booting with the "irqpoll" option)
[  922.681173][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  922.681415][    C0] Call Trace:
[  922.681558][    C0]  <IRQ>
[ 922.681651][ C0] dump_stack_lvl (lib/dump_stack.c:123)
[ 922.681849][ C0] __report_bad_irq (kernel/irq/spurious.c:214)
[ 922.682027][ C0] note_interrupt (kernel/irq/spurious.c:423)
[ 922.682199][ C0] handle_irq_event (kernel/irq/handle.c:198 kernel/irq/handle.c:210)
[ 922.682366][ C0] handle_edge_irq (kernel/irq/chip.c:833)
[ 922.682541][ C0] __common_interrupt (./include/linux/irqdesc.h:173 arch/x86/kernel/irq.c:247 arch/x86/kernel/irq.c:259 arch/x86/kernel/irq.c:285)
[ 922.682714][ C0] common_interrupt (arch/x86/kernel/irq.c:278 (discriminator 14))
[  922.682892][    C0]  </IRQ>
[  922.682988][    C0]  <TASK>
[ 922.683078][ C0] asm_common_interrupt (./arch/x86/include/asm/idtentry.h:693)
[ 922.683266][ C0] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194)
[ 922.683508][ C0] Code: 10 e8 61 0b 8c fd 48 89 ef e8 19 80 8c fd 81 e3 00 02 00 00 75 1d 9c 58 f6 c4 02 75 29 48 85 db 74 01 fb 65 ff 0d 55 05 34 72 <74> 0e 5b 5d c3 cc cc cc cc e8 0f c8 b1 fd eb dc 0f 1f 44 00 00 5b
All code
========
   0:	10 e8                	adc    %ch,%al
   2:	61                   	(bad)
   3:	0b 8c fd 48 89 ef e8 	or     -0x171076b8(%rbp,%rdi,8),%ecx
   a:	19 80 8c fd 81 e3    	sbb    %eax,-0x1c7e0274(%rax)
  10:	00 02                	add    %al,(%rdx)
  12:	00 00                	add    %al,(%rax)
  14:	75 1d                	jne    0x33
  16:	9c                   	pushf
  17:	58                   	pop    %rax
  18:	f6 c4 02             	test   $0x2,%ah
  1b:	75 29                	jne    0x46
  1d:	48 85 db             	test   %rbx,%rbx
  20:	74 01                	je     0x23
  22:	fb                   	sti
  23:	65 ff 0d 55 05 34 72 	decl   %gs:0x72340555(%rip)        # 0x7234057f
  2a:*	74 0e                	je     0x3a		<-- trapping instruction
  2c:	5b                   	pop    %rbx
  2d:	5d                   	pop    %rbp
  2e:	c3                   	ret
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	cc                   	int3
  33:	e8 0f c8 b1 fd       	call   0xfffffffffdb1c847
  38:	eb dc                	jmp    0x16
  3a:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  3f:	5b                   	pop    %rbx

Code starting with the faulting instruction
===========================================
   0:	74 0e                	je     0x10
   2:	5b                   	pop    %rbx
   3:	5d                   	pop    %rbp
   4:	c3                   	ret
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	cc                   	int3
   9:	e8 0f c8 b1 fd       	call   0xfffffffffdb1c81d
   e:	eb dc                	jmp    0xffffffffffffffec
  10:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  15:	5b                   	pop    %rbx
[  922.684097][    C0] RSP: 0018:ffffc9000bb07aa0 EFLAGS: 00000286
[  922.684315][    C0] RAX: 0000000000000006 RBX: 0000000000000200 RCX: 1ffffffff22049b2
[  922.684575][    C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8dcfbfc1
[  922.684847][    C0] RBP: ffffffff918eb800 R08: 0000000000000001 R09: fffffbfff21fffef
[  922.685096][    C0] R10: ffffffff90ffff7f R11: ffff888004f5c5c0 R12: 00000000ffffffff
[  922.685360][    C0] R13: 0000000000000001 R14: ffffffff918eb908 R15: 00000000ffffffff
[ 922.685633][ C0] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194)
[ 922.685903][ C0] uart_write (drivers/tty/serial/serial_core.c:74 drivers/tty/serial/serial_core.c:636)
[ 922.686042][ C0] process_output_block (drivers/tty/n_tty.c:574)
[ 922.686211][ C0] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406)
[ 922.686424][ C0] n_tty_write (drivers/tty/n_tty.c:2390)
[ 922.686597][ C0] ? __pfx_n_tty_write (drivers/tty/n_tty.c:2360)
[ 922.686771][ C0] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 37))
[ 922.686946][ C0] ? __pfx_woken_wake_function (kernel/sched/wait.c:439)
[ 922.687116][ C0] ? lock_acquire (kernel/locking/lockdep.c:5822)
[ 922.687285][ C0] ? iterate_tty_write (drivers/tty/tty_io.c:948 drivers/tty/tty_io.c:967)
[ 922.687492][ C0] iterate_tty_write (drivers/tty/tty_io.c:1015)
[ 922.687664][ C0] ? tty_ldisc_ref_wait (drivers/tty/tty_ldisc.c:244)
[ 922.687836][ C0] file_tty_write.constprop.0 (drivers/tty/tty_io.c:1090)
[ 922.688085][ C0] vfs_write (fs/read_write.c:586 fs/read_write.c:679)
[ 922.688223][ C0] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5814)
[ 922.688400][ C0] ? __pfx_vfs_write (fs/read_write.c:660)
[ 922.688574][ C0] ? clockevents_program_event (kernel/time/clockevents.c:326)
[ 922.688754][ C0] ? clockevents_program_event (kernel/time/clockevents.c:334 (discriminator 3))
[ 922.688963][ C0] ksys_write (fs/read_write.c:731)
[ 922.689093][ C0] ? __pfx_ksys_write (fs/read_write.c:721)
[ 922.689269][ C0] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83)
[ 922.689448][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[  922.689657][    C0] RIP: 0033:0x7f7eaa5dcb77
[ 922.689831][ C0] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  922.690411][    C0] RSP: 002b:00007ffdbdb517a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  922.690672][    C0] RAX: ffffffffffffffda RBX: 0000565038af43f0 RCX: 00007f7eaa5dcb77
[  922.690921][    C0] RDX: 0000000000000001 RSI: 0000565038af43f0 RDI: 0000000000000001
[  922.691174][    C0] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000002000
[  922.691427][    C0] R10: 0000000000000001 R11: 0000000000000246 R12: 0000565038adf5e0


Finger prints:
__report_bad_irq:note_interrupt:handle_irq_event:handle_edge_irq:__common_interrupt