======================================
| # 113.05 [+0.00] [ 1173.886595] vx10: left promiscuous mode
| # 113.06 [+0.00] [ 1173.886916] br1: port 1(vx10) entered disabled state
| # 113.06 [+0.00] [ 1203.515227] Mirror/redirect action on
| # 113.06 [+0.00] [ 1250.623165] irq 4: nobody cared (try booting with the "irqpoll" option)
# 113.06 [+0.00] [ 1250.623784] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
# 113.07 [+0.00] [ 1250.624148] Call Trace:
# 113.07 [+0.00] [ 1250.624271]  <IRQ>
# 113.07 [+0.00] [ 1250.624357] dump_stack_lvl (lib/dump_stack.c:122) 
# 113.07 [+0.00] [ 1250.624526] __report_bad_irq (kernel/irq/spurious.c:214) 
# 113.07 [+0.00] [ 1250.624684] note_interrupt (kernel/irq/spurious.c:423) 
# 113.07 [+0.00] [ 1250.624843] handle_irq_event (kernel/irq/handle.c:198 kernel/irq/handle.c:210) 
# 113.07 [+0.00] [ 1250.625001] handle_edge_irq (kernel/irq/chip.c:833) 
# 113.07 [+0.00] [ 1250.625161] __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) 
# 113.07 [+0.00] [ 1250.625325] common_interrupt (arch/x86/kernel/irq.c:278 (discriminator 14)) 
# 113.08 [+0.00] [ 1250.625481]  </IRQ>
# 113.08 [+0.00] [ 1250.625576]  <TASK>
# 113.08 [+0.00] [ 1250.625658] asm_common_interrupt (./arch/x86/include/asm/idtentry.h:693) 
# 113.08 [+0.00] [ 1250.625819] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
# 113.08 [+0.00] [ 1250.626020] Code: 10 e8 f1 e9 8c fd 48 89 ef e8 99 5a 8d 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 15 16 01 62 <74> 0e 5b 5d c3 cc cc cc cc e8 6f 13 b1 fd eb dc 0f 1f 44 00 00 5b
All code
========
   0:	10 e8                	adc    %ch,%al
   2:	f1                   	int1
   3:	e9 8c fd 48 89       	jmp    0xffffffff8948fd94
   8:	ef                   	out    %eax,(%dx)
   9:	e8 99 5a 8d fd       	call   0xfffffffffd8d5aa7
   e:	81 e3 00 02 00 00    	and    $0x200,%ebx
  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 15 16 01 62 	decl   %gs:0x62011615(%rip)        # 0x6201163f
  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 6f 13 b1 fd       	call   0xfffffffffdb113a7
  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 6f 13 b1 fd       	call   0xfffffffffdb1137d
   e:	eb dc                	jmp    0xffffffffffffffec
  10:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  15:	5b                   	pop    %rbx
# 113.08 [+0.01] [ 1250.626563] RSP: 0018:ffffc9000710fab8 EFLAGS: 00000286
# 113.09 [+0.00] [ 1250.626766] RAX: 0000000000000002 RBX: 0000000000000200 RCX: 1ffffffff4278220
# 113.09 [+0.00] [ 1250.626996] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff9e02b081
# 113.09 [+0.00] [ 1250.627243] RBP: ffffffffa1c822a0 R08: 0000000000000001 R09: fffffbfff4273318
# 113.09 [+0.00] [ 1250.627479] R10: ffffffffa13998c7 R11: 0000000000000000 R12: ffffffffa1c823a8
# 113.10 [+0.00] [ 1250.627713] R13: ffff888005f1e400 R14: ffffffffa1c822a0 R15: 0000000000000286
# 113.10 [+0.00] [ 1250.627964] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
# 113.10 [+0.00] [ 1250.628166] uart_write (drivers/tty/serial/serial_core.c:74 drivers/tty/serial/serial_core.c:634) 
# 113.10 [+0.00] [ 1250.628288] process_output_block (drivers/tty/n_tty.c:574) 
# 113.10 [+0.00] [ 1250.628468] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
# 113.10 [+0.00] [ 1250.628672] n_tty_write (drivers/tty/n_tty.c:2390) 
# 113.10 [+0.00] [ 1250.628832] ? __pfx_n_tty_write (drivers/tty/n_tty.c:2360) 
# 113.11 [+0.00] [ 1250.628992] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
# 113.11 [+0.00] [ 1250.629151] ? __pfx_woken_wake_function (kernel/sched/wait.c:439) 
# 113.11 [+0.00] [ 1250.629322] ? iterate_tty_write (drivers/tty/tty_io.c:954 drivers/tty/tty_io.c:973) 
# 113.11 [+0.00] [ 1250.629507] ? lock_acquire (kernel/locking/lockdep.c:5732) 
# 113.11 [+0.00] [ 1250.629662] ? iterate_tty_write (drivers/tty/tty_io.c:954 drivers/tty/tty_io.c:973) 
# 113.11 [+0.00] [ 1250.629823] iterate_tty_write (drivers/tty/tty_io.c:1021) 
# 113.11 [+0.00] [ 1250.629993] ? tty_ldisc_ref_wait (drivers/tty/tty_ldisc.c:244) 
# 113.11 [+0.00] [ 1250.630155] file_tty_write.constprop.0 (drivers/tty/tty_io.c:1096) 
# 113.12 [+0.00] [ 1250.630318] vfs_write (fs/read_write.c:497 fs/read_write.c:590) 
# 113.12 [+0.00] [ 1250.630439] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
# 113.12 [+0.00] [ 1250.630593] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
# 113.12 [+0.00] [ 1250.630753] ? __might_fault (mm/memory.c:6404 mm/memory.c:6397) 
# 113.12 [+0.00] [ 1250.630911] ? lock_acquire (kernel/locking/lockdep.c:5732) 
# 113.12 [+0.00] [ 1250.631068] ? __pfx_vfs_write (fs/read_write.c:571) 
# 113.12 [+0.00] [ 1250.631228] ? __might_fault (mm/memory.c:6404 mm/memory.c:6397) 
# 113.12 [+0.00] [ 1250.631411] ? __rseq_handle_notify_resume (kernel/rseq.c:316) 
# 113.13 [+0.00] [ 1250.631611] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1141) 
# 113.13 [+0.00] [ 1250.631777] ksys_write (fs/read_write.c:643) 
# 113.13 [+0.00] [ 1250.631897] ? __pfx_ksys_write (fs/read_write.c:633) 
# 113.13 [+0.00] [ 1250.632070] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
# 113.13 [+0.00] [ 1250.632233] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
# 113.13 [+0.00] [ 1250.632431] RIP: 0033:0x7faa556f1957
# 113.13 [+0.00] [ 1250.632594] 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
# 113.14 [+0.01] [ 1250.633158] RSP: 002b:00007ffdf3cd1ca8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
# 113.14 [+0.00] [ 1250.633413] RAX: ffffffffffffffda RBX: 000055642e42c2b0 RCX: 00007faa556f1957
# 113.14 [+0.00] [ 1250.633674] RDX: 0000000000000001 RSI: 000055642e42c2b0 RDI: 0000000000000001
# 113.15 [+0.00] [ 1250.633933] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000002000
# 113.15 [+0.00] [ 1250.634185] R10: 0000000000000001 R11: 0000000000000246 R12: 000055642e4175e0
# 113.15 [+0.00] [ 1250.634443] R13: 000055642e3f82a0 R14: 0000000000000001 R15: 000055642e4175e0
| xx__-> echo $?
| 0
| xx__-> [ 1203.515227][ T8409] Mirror/redirect action on
| [ 1250.623165][    C3] irq 4: nobody cared (try booting with the "irqpoll" option)
[ 1250.623784][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1250.624148][    C3] Call Trace:
[ 1250.624271][    C3]  <IRQ>
[ 1250.624357][ C3] dump_stack_lvl (lib/dump_stack.c:122) 
[ 1250.624526][ C3] __report_bad_irq (kernel/irq/spurious.c:214) 
[ 1250.624684][ C3] note_interrupt (kernel/irq/spurious.c:423) 
[ 1250.624843][ C3] handle_irq_event (kernel/irq/handle.c:198 kernel/irq/handle.c:210) 
[ 1250.625001][ C3] handle_edge_irq (kernel/irq/chip.c:833) 
[ 1250.625161][ C3] __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) 
[ 1250.625325][ C3] common_interrupt (arch/x86/kernel/irq.c:278 (discriminator 14)) 
[ 1250.625481][    C3]  </IRQ>
[ 1250.625576][    C3]  <TASK>
[ 1250.625658][ C3] asm_common_interrupt (./arch/x86/include/asm/idtentry.h:693) 
[ 1250.625819][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1250.626020][ C3] Code: 10 e8 f1 e9 8c fd 48 89 ef e8 99 5a 8d 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 15 16 01 62 <74> 0e 5b 5d c3 cc cc cc cc e8 6f 13 b1 fd eb dc 0f 1f 44 00 00 5b
All code
========
   0:	10 e8                	adc    %ch,%al
   2:	f1                   	int1
   3:	e9 8c fd 48 89       	jmp    0xffffffff8948fd94
   8:	ef                   	out    %eax,(%dx)
   9:	e8 99 5a 8d fd       	call   0xfffffffffd8d5aa7
   e:	81 e3 00 02 00 00    	and    $0x200,%ebx
  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 15 16 01 62 	decl   %gs:0x62011615(%rip)        # 0x6201163f
  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 6f 13 b1 fd       	call   0xfffffffffdb113a7
  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 6f 13 b1 fd       	call   0xfffffffffdb1137d
   e:	eb dc                	jmp    0xffffffffffffffec
  10:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  15:	5b                   	pop    %rbx
[ 1250.626563][    C3] RSP: 0018:ffffc9000710fab8 EFLAGS: 00000286
[ 1250.626766][    C3] RAX: 0000000000000002 RBX: 0000000000000200 RCX: 1ffffffff4278220
[ 1250.626996][    C3] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff9e02b081
[ 1250.627243][    C3] RBP: ffffffffa1c822a0 R08: 0000000000000001 R09: fffffbfff4273318
[ 1250.627479][    C3] R10: ffffffffa13998c7 R11: 0000000000000000 R12: ffffffffa1c823a8
[ 1250.627713][    C3] R13: ffff888005f1e400 R14: ffffffffa1c822a0 R15: 0000000000000286
[ 1250.627964][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 1250.628166][ C3] uart_write (drivers/tty/serial/serial_core.c:74 drivers/tty/serial/serial_core.c:634) 
[ 1250.628288][ C3] process_output_block (drivers/tty/n_tty.c:574) 
[ 1250.628468][ C3] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 1250.628672][ C3] n_tty_write (drivers/tty/n_tty.c:2390) 
[ 1250.628832][ C3] ? __pfx_n_tty_write (drivers/tty/n_tty.c:2360) 
[ 1250.628992][ C3] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 1250.629151][ C3] ? __pfx_woken_wake_function (kernel/sched/wait.c:439) 
[ 1250.629322][ C3] ? iterate_tty_write (drivers/tty/tty_io.c:954 drivers/tty/tty_io.c:973) 
[ 1250.629507][ C3] ? lock_acquire (kernel/locking/lockdep.c:5732) 
[ 1250.629662][ C3] ? iterate_tty_write (drivers/tty/tty_io.c:954 drivers/tty/tty_io.c:973) 
[ 1250.629823][ C3] iterate_tty_write (drivers/tty/tty_io.c:1021) 
[ 1250.629993][ C3] ? tty_ldisc_ref_wait (drivers/tty/tty_ldisc.c:244) 
[ 1250.630155][ C3] file_tty_write.constprop.0 (drivers/tty/tty_io.c:1096) 
[ 1250.630318][ C3] vfs_write (fs/read_write.c:497 fs/read_write.c:590) 
[ 1250.630439][ C3] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 1250.630593][ C3] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 1250.630753][ C3] ? __might_fault (mm/memory.c:6404 mm/memory.c:6397) 
[ 1250.630911][ C3] ? lock_acquire (kernel/locking/lockdep.c:5732) 
[ 1250.631068][ C3] ? __pfx_vfs_write (fs/read_write.c:571) 
[ 1250.631228][ C3] ? __might_fault (mm/memory.c:6404 mm/memory.c:6397) 
[ 1250.631411][ C3] ? __rseq_handle_notify_resume (kernel/rseq.c:316) 
[ 1250.631611][ C3] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1141) 
[ 1250.631777][ C3] ksys_write (fs/read_write.c:643) 
[ 1250.631897][ C3] ? __pfx_ksys_write (fs/read_write.c:633) 
[ 1250.632070][ C3] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 1250.632233][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1250.632431][    C3] RIP: 0033:0x7faa556f1957
[ 1250.632594][ C3] 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
[ 1250.633158][    C3] RSP: 002b:00007ffdf3cd1ca8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 1250.633413][    C3] RAX: ffffffffffffffda RBX: 000055642e42c2b0 RCX: 00007faa556f1957
[ 1250.633674][    C3] RDX: 0000000000000001 RSI: 000055642e42c2b0 RDI: 0000000000000001
[ 1250.633933][    C3] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000002000
[ 1250.634185][    C3] R10: 0000000000000001 R11: 0000000000000246 R12: 000055642e4175e0


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