======================================
| # 108.55 [+0.00] [  838.916147] vx1: left promiscuous mode
| # 108.55 [+0.00] [  838.916682] br1: port 1(vx1) entered disabled state
| # 108.55 [+0.00] [ 1054.206592] Mirror/redirect action on
| # 108.55 [+0.00] [ 1089.820856] irq 51: nobody cared (try booting with the "irqpoll" option)
# 108.56 [+0.00] [ 1089.821393] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
# 108.56 [+0.00] [ 1089.821395] Call Trace:
# 108.56 [+0.00] [ 1089.821397]  <IRQ>
# 108.56 [+0.00] [ 1089.821400]  dump_stack_lvl (lib/dump_stack.c:123)
# 108.57 [+0.00] [ 1089.821411]  __report_bad_irq (kernel/irq/spurious.c:170)
# 108.57 [+0.00] [ 1089.821419]  note_interrupt (kernel/irq/spurious.c:372)
# 108.57 [+0.00] [ 1089.821427]  handle_irq_event (kernel/irq/handle.c:245 kernel/irq/handle.c:257)
# 108.57 [+0.00] [ 1089.821434]  handle_edge_irq (kernel/irq/chip.c:857)
# 108.57 [+0.00] [ 1089.821444]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
# 108.57 [+0.00] [ 1089.821455]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 14))
# 108.58 [+0.00] [ 1089.821459]  </IRQ>
# 108.58 [+0.00] [ 1089.821460]  <TASK>
# 108.58 [+0.00] [ 1089.821464]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
# 108.58 [+0.00] [ 1089.821469] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194)
# 108.58 [+0.00] [ 1089.821475] Code: 74 24 10 e8 f1 78 ff fd 48 89 ef e8 19 c8 ff fd 81 e3 00 02 00 00 75 25 9c 58 f6 c4 02 75 2d 48 85 db 74 01 fb bf 01 00 00 00 <e8> aa 00 f4 fd 65 8b 05 b3 eb 07 02 85 c0 74 0a 5b 5d c3 e8 07 8c
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	f1                   	int1
   5:	78 ff                	js     0x6
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 19 c8 ff fd       	call   0xfffffffffdffc829
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 25                	jne    0x3d
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 2d                	jne    0x4c
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 aa 00 f4 fd       	call   0xfffffffffdf400d9		<-- trapping instruction
  2f:	65 8b 05 b3 eb 07 02 	mov    %gs:0x207ebb3(%rip),%eax        # 0x207ebe9
  36:	85 c0                	test   %eax,%eax
  38:	74 0a                	je     0x44
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	c3                   	ret
  3d:	e8                   	.byte 0xe8
  3e:	07                   	(bad)
  3f:	8c                   	.byte 0x8c

Code starting with the faulting instruction
===========================================
   0:	e8 aa 00 f4 fd       	call   0xfffffffffdf400af
   5:	65 8b 05 b3 eb 07 02 	mov    %gs:0x207ebb3(%rip),%eax        # 0x207ebbf
   c:	85 c0                	test   %eax,%eax
   e:	74 0a                	je     0x1a
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	c3                   	ret
  13:	e8                   	.byte 0xe8
  14:	07                   	(bad)
  15:	8c                   	.byte 0x8c
# 108.59 [+0.01] [ 1089.821477] RSP: 0018:ffffc9000a407a88 EFLAGS: 00000206
# 108.59 [+0.00] [ 1089.821481] RAX: 0000000000000006 RBX: 0000000000000200 RCX: 0000000000000040
# 108.59 [+0.00] [ 1089.821483] RDX: 0000000000000000 RSI: ffffffff9b98647a RDI: 0000000000000001
# 108.60 [+0.00] [ 1089.821485] RBP: ffffffff9e26d5a0 R08: 0000000000000001 R09: 0000000000000001
# 108.60 [+0.00] [ 1089.821487] R10: ffffffff9c823857 R11: ffff888005fe8970 R12: 00000000ffffffff
# 108.60 [+0.00] [ 1089.821489] R13: 0000000000000001 R14: ffffffff9e26d6a8 R15: 00000000ffffffff
# 108.61 [+0.00] [ 1089.821505]  uart_write (drivers/tty/serial/serial_core.c:74 drivers/tty/serial/serial_core.c:92 drivers/tty/serial/serial_core.c:88 drivers/tty/serial/serial_core.c:634)
# 108.61 [+0.00] [ 1089.821516]  process_output_block (drivers/tty/n_tty.c:561)
# 108.61 [+0.00] [ 1089.821523]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194)
# 108.61 [+0.00] [ 1089.821531]  n_tty_write (drivers/tty/n_tty.c:2378)
# 108.61 [+0.00] [ 1089.821533]  ? _copy_from_iter (./arch/x86/include/asm/uaccess_64.h:126 ./arch/x86/include/asm/uaccess_64.h:141 lib/iov_iter.c:55 ./include/linux/iov_iter.h:30 ./include/linux/iov_iter.h:302 ./include/linux/iov_iter.h:330 lib/iov_iter.c:249 lib/iov_iter.c:260)
# 108.61 [+0.00] [ 1089.821546]  ? n_tty_receive_signal_char (drivers/tty/n_tty.c:2348)
# 108.62 [+0.00] [ 1089.821553]  ? __init_waitqueue_head (kernel/sched/wait.c:458)
# 108.62 [+0.00] [ 1089.821559]  ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5831)
# 108.62 [+0.00] [ 1089.821563]  ? iterate_tty_write (drivers/tty/tty_io.c:939 drivers/tty/tty_io.c:958)
# 108.62 [+0.00] [ 1089.821573]  iterate_tty_write (drivers/tty/tty_io.c:1007)
# 108.62 [+0.00] [ 1089.821579]  ? tty_ldisc_ref_wait (drivers/tty/tty_ldisc.c:244)
# 108.62 [+0.00] [ 1089.821587]  file_tty_write.constprop.0 (drivers/tty/tty_io.c:1081)
# 108.63 [+0.00] [ 1089.821595]  vfs_write (fs/read_write.c:594 fs/read_write.c:686)
# 108.63 [+0.00] [ 1089.821602]  ? find_held_lock (kernel/locking/lockdep.c:5350)
# 108.63 [+0.00] [ 1089.821607]  ? kernel_write (fs/read_write.c:667)
# 108.63 [+0.00] [ 1089.821615]  ? clockevents_program_event (kernel/time/clockevents.c:326)
# 108.63 [+0.00] [ 1089.821628]  ? clockevents_program_event (kernel/time/clockevents.c:336 (discriminator 3))
# 108.63 [+0.00] [ 1089.821636]  ksys_write (fs/read_write.c:738)
# 108.64 [+0.00] [ 1089.821641]  ? __ia32_sys_read (fs/read_write.c:728)
# 108.64 [+0.00] [ 1089.821653]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
# 108.64 [+0.00] [ 1089.821660]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
# 108.64 [+0.00] [ 1089.821662] RIP: 0033:0x7f00783f5257
# 108.64 [+0.00] [ 1089.821667] Code: 0f 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:	0f 00                	(bad)
   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
# 108.65 [+0.01] [ 1089.821669] RSP: 002b:00007fff2f47b8a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
# 108.65 [+0.00] [ 1089.821672] RAX: ffffffffffffffda RBX: 0000563edb06c2e0 RCX: 00007f00783f5257
# 108.66 [+0.00] [ 1089.821674] RDX: 0000000000000001 RSI: 0000563edb06c2e0 RDI: 0000000000000001
# 108.66 [+0.00] [ 1089.821675] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000002000
# 108.66 [+0.00] [ 1089.821677] R10: 0000000000000001 R11: 0000000000000246 R12: 0000563edb057600
# 108.66 [+0.00] [ 1089.821678] R13: 0000563edb0382a0 R14: 0000000000000001 R15: 0000563edb057600
| xx__-> echo $?
| 0
| xx__-> [ 1054.206592][ T7844] Mirror/redirect action on
| [ 1089.820856][    C0] irq 51: nobody cared (try booting with the "irqpoll" option)
[ 1089.821393][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1089.821395][    C0] Call Trace:
[ 1089.821397][    C0]  <IRQ>
[ 1089.821400][    C0]  dump_stack_lvl (lib/dump_stack.c:123)
[ 1089.821411][    C0]  __report_bad_irq (kernel/irq/spurious.c:170)
[ 1089.821419][    C0]  note_interrupt (kernel/irq/spurious.c:372)
[ 1089.821427][    C0]  handle_irq_event (kernel/irq/handle.c:245 kernel/irq/handle.c:257)
[ 1089.821434][    C0]  handle_edge_irq (kernel/irq/chip.c:857)
[ 1089.821444][    C0]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 1089.821455][    C0]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 14))
[ 1089.821459][    C0]  </IRQ>
[ 1089.821460][    C0]  <TASK>
[ 1089.821464][    C0]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 1089.821469][    C0] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194)
[ 1089.821475][    C0] Code: 74 24 10 e8 f1 78 ff fd 48 89 ef e8 19 c8 ff fd 81 e3 00 02 00 00 75 25 9c 58 f6 c4 02 75 2d 48 85 db 74 01 fb bf 01 00 00 00 <e8> aa 00 f4 fd 65 8b 05 b3 eb 07 02 85 c0 74 0a 5b 5d c3 e8 07 8c
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	f1                   	int1
   5:	78 ff                	js     0x6
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 19 c8 ff fd       	call   0xfffffffffdffc829
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 25                	jne    0x3d
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 2d                	jne    0x4c
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 aa 00 f4 fd       	call   0xfffffffffdf400d9		<-- trapping instruction
  2f:	65 8b 05 b3 eb 07 02 	mov    %gs:0x207ebb3(%rip),%eax        # 0x207ebe9
  36:	85 c0                	test   %eax,%eax
  38:	74 0a                	je     0x44
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	c3                   	ret
  3d:	e8                   	.byte 0xe8
  3e:	07                   	(bad)
  3f:	8c                   	.byte 0x8c

Code starting with the faulting instruction
===========================================
   0:	e8 aa 00 f4 fd       	call   0xfffffffffdf400af
   5:	65 8b 05 b3 eb 07 02 	mov    %gs:0x207ebb3(%rip),%eax        # 0x207ebbf
   c:	85 c0                	test   %eax,%eax
   e:	74 0a                	je     0x1a
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	c3                   	ret
  13:	e8                   	.byte 0xe8
  14:	07                   	(bad)
  15:	8c                   	.byte 0x8c
[ 1089.821477][    C0] RSP: 0018:ffffc9000a407a88 EFLAGS: 00000206
[ 1089.821481][    C0] RAX: 0000000000000006 RBX: 0000000000000200 RCX: 0000000000000040
[ 1089.821483][    C0] RDX: 0000000000000000 RSI: ffffffff9b98647a RDI: 0000000000000001
[ 1089.821485][    C0] RBP: ffffffff9e26d5a0 R08: 0000000000000001 R09: 0000000000000001
[ 1089.821487][    C0] R10: ffffffff9c823857 R11: ffff888005fe8970 R12: 00000000ffffffff
[ 1089.821489][    C0] R13: 0000000000000001 R14: ffffffff9e26d6a8 R15: 00000000ffffffff
[ 1089.821505][    C0]  uart_write (drivers/tty/serial/serial_core.c:74 drivers/tty/serial/serial_core.c:92 drivers/tty/serial/serial_core.c:88 drivers/tty/serial/serial_core.c:634)
[ 1089.821516][    C0]  process_output_block (drivers/tty/n_tty.c:561)
[ 1089.821523][    C0]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194)
[ 1089.821531][    C0]  n_tty_write (drivers/tty/n_tty.c:2378)
[ 1089.821533][    C0]  ? _copy_from_iter (./arch/x86/include/asm/uaccess_64.h:126 ./arch/x86/include/asm/uaccess_64.h:141 lib/iov_iter.c:55 ./include/linux/iov_iter.h:30 ./include/linux/iov_iter.h:302 ./include/linux/iov_iter.h:330 lib/iov_iter.c:249 lib/iov_iter.c:260)
[ 1089.821546][    C0]  ? n_tty_receive_signal_char (drivers/tty/n_tty.c:2348)
[ 1089.821553][    C0]  ? __init_waitqueue_head (kernel/sched/wait.c:458)
[ 1089.821559][    C0]  ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5831)
[ 1089.821563][    C0]  ? iterate_tty_write (drivers/tty/tty_io.c:939 drivers/tty/tty_io.c:958)
[ 1089.821573][    C0]  iterate_tty_write (drivers/tty/tty_io.c:1007)
[ 1089.821579][    C0]  ? tty_ldisc_ref_wait (drivers/tty/tty_ldisc.c:244)
[ 1089.821587][    C0]  file_tty_write.constprop.0 (drivers/tty/tty_io.c:1081)
[ 1089.821595][    C0]  vfs_write (fs/read_write.c:594 fs/read_write.c:686)
[ 1089.821602][    C0]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[ 1089.821607][    C0]  ? kernel_write (fs/read_write.c:667)
[ 1089.821615][    C0]  ? clockevents_program_event (kernel/time/clockevents.c:326)
[ 1089.821628][    C0]  ? clockevents_program_event (kernel/time/clockevents.c:336 (discriminator 3))
[ 1089.821636][    C0]  ksys_write (fs/read_write.c:738)
[ 1089.821641][    C0]  ? __ia32_sys_read (fs/read_write.c:728)
[ 1089.821653][    C0]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[ 1089.821660][    C0]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 1089.821662][    C0] RIP: 0033:0x7f00783f5257
[ 1089.821667][    C0] Code: 0f 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:	0f 00                	(bad)
   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
[ 1089.821669][    C0] RSP: 002b:00007fff2f47b8a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 1089.821672][    C0] RAX: ffffffffffffffda RBX: 0000563edb06c2e0 RCX: 00007f00783f5257
[ 1089.821674][    C0] RDX: 0000000000000001 RSI: 0000563edb06c2e0 RDI: 0000000000000001
[ 1089.821675][    C0] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000002000
[ 1089.821677][    C0] R10: 0000000000000001 R11: 0000000000000246 R12: 0000563edb057600


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