======================================
| # 103.11 [+0.00] [ 1150.231015] vx10: left promiscuous mode
| # 103.11 [+0.00] [ 1150.231320] br1: port 1(vx10) entered disabled state
| # 103.11 [+0.00] [ 1179.291165] Mirror/redirect action on
| # 103.11 [+0.00] [ 1202.088434] irq 4: nobody cared (try booting with the "irqpoll" option)
# 103.11 [+0.00] [ 1202.089164] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
# 103.12 [+0.00] [ 1202.089599] Call Trace:
# 103.12 [+0.00] [ 1202.089762]  <IRQ>
# 103.12 [+0.00] [ 1202.089853] dump_stack_lvl (lib/dump_stack.c:122) 
# 103.12 [+0.00] [ 1202.090067] __report_bad_irq (kernel/irq/spurious.c:214) 
# 103.12 [+0.00] [ 1202.090267] note_interrupt (kernel/irq/spurious.c:423) 
# 103.12 [+0.00] [ 1202.090449] handle_irq_event (kernel/irq/handle.c:198 kernel/irq/handle.c:210) 
# 103.12 [+0.00] [ 1202.090647] handle_edge_irq (kernel/irq/chip.c:833) 
# 103.13 [+0.00] [ 1202.090844] __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) 
# 103.13 [+0.00] [ 1202.091032] common_interrupt (arch/x86/kernel/irq.c:278 (discriminator 14)) 
# 103.13 [+0.00] [ 1202.091226]  </IRQ>
# 103.13 [+0.00] [ 1202.091325]  <TASK>
# 103.13 [+0.00] [ 1202.091421] asm_common_interrupt (./arch/x86/include/asm/idtentry.h:693) 
# 103.13 [+0.00] [ 1202.091609] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
# 103.13 [+0.00] [ 1202.091852] Code: 10 e8 b1 99 8d fd 48 89 ef e8 59 0a 8e 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 95 d7 01 7a <74> 0e 5b 5d c3 cc cc cc cc e8 2f c3 b1 fd eb dc 0f 1f 44 00 00 5b
All code
========
   0:	10 e8                	adc    %ch,%al
   2:	b1 99                	mov    $0x99,%cl
   4:	8d                   	(bad)
   5:	fd                   	std
   6:	48 89 ef             	mov    %rbp,%rdi
   9:	e8 59 0a 8e fd       	call   0xfffffffffd8e0a67
   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 95 d7 01 7a 	decl   %gs:0x7a01d795(%rip)        # 0x7a01d7bf
  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 2f c3 b1 fd       	call   0xfffffffffdb1c367
  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 2f c3 b1 fd       	call   0xfffffffffdb1c33d
   e:	eb dc                	jmp    0xffffffffffffffec
  10:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  15:	5b                   	pop    %rbx
# 103.14 [+0.01] [ 1202.092500] RSP: 0018:ffffc9000837fab8 EFLAGS: 00000286
# 103.14 [+0.00] [ 1202.092735] RAX: 0000000000000006 RBX: 0000000000000200 RCX: 1ffffffff1277807
# 103.14 [+0.00] [ 1202.093002] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8601eec1
# 103.14 [+0.00] [ 1202.093254] RBP: ffffffff89c7d260 R08: 0000000000000001 R09: fffffbfff1272918
# 103.15 [+0.00] [ 1202.093519] R10: ffffffff893948c7 R11: 0000000000000000 R12: ffffffff89c7d368
# 103.15 [+0.00] [ 1202.093790] R13: ffff888007bf1000 R14: ffffffff89c7d260 R15: 0000000000000286
# 103.15 [+0.00] [ 1202.094059] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
# 103.15 [+0.00] [ 1202.094290] uart_write (drivers/tty/serial/serial_core.c:74 drivers/tty/serial/serial_core.c:634) 
# 103.15 [+0.00] [ 1202.094436] process_output_block (drivers/tty/n_tty.c:574) 
# 103.15 [+0.00] [ 1202.094633] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
# 103.16 [+0.00] [ 1202.094858] n_tty_write (drivers/tty/n_tty.c:2390) 
# 103.16 [+0.00] [ 1202.095033] ? __pfx_n_tty_write (drivers/tty/n_tty.c:2360) 
# 103.16 [+0.00] [ 1202.095199] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
# 103.16 [+0.00] [ 1202.095372] ? __pfx_woken_wake_function (kernel/sched/wait.c:439) 
# 103.16 [+0.00] [ 1202.095547] ? iterate_tty_write (drivers/tty/tty_io.c:954 drivers/tty/tty_io.c:973) 
# 103.16 [+0.00] [ 1202.095726] ? lock_acquire (kernel/locking/lockdep.c:5732) 
# 103.16 [+0.00] [ 1202.095893] ? iterate_tty_write (drivers/tty/tty_io.c:954 drivers/tty/tty_io.c:973) 
# 103.17 [+0.00] [ 1202.096065] iterate_tty_write (drivers/tty/tty_io.c:1021) 
# 103.17 [+0.00] [ 1202.096234] ? tty_ldisc_ref_wait (drivers/tty/tty_ldisc.c:244) 
# 103.17 [+0.00] [ 1202.096409] file_tty_write.constprop.0 (drivers/tty/tty_io.c:1096) 
# 103.17 [+0.00] [ 1202.096586] vfs_write (fs/read_write.c:497 fs/read_write.c:590) 
# 103.17 [+0.00] [ 1202.096722] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
# 103.17 [+0.00] [ 1202.096893] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
# 103.17 [+0.00] [ 1202.097062] ? __might_fault (mm/memory.c:6387 mm/memory.c:6380) 
# 103.17 [+0.00] [ 1202.097239] ? lock_acquire (kernel/locking/lockdep.c:5732) 
# 103.18 [+0.00] [ 1202.097439] ? __pfx_vfs_write (fs/read_write.c:571) 
# 103.18 [+0.00] [ 1202.097638] ? __might_fault (mm/memory.c:6387 mm/memory.c:6380) 
# 103.18 [+0.00] [ 1202.097837] ? __rseq_handle_notify_resume (kernel/rseq.c:316) 
# 103.18 [+0.00] [ 1202.098079] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1141) 
# 103.18 [+0.00] [ 1202.098274] ksys_write (fs/read_write.c:643) 
# 103.18 [+0.00] [ 1202.098416] ? __pfx_ksys_write (fs/read_write.c:633) 
# 103.18 [+0.00] [ 1202.098608] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
# 103.18 [+0.00] [ 1202.098799] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
# 103.19 [+0.00] [ 1202.099036] RIP: 0033:0x7f4155b9f957
# 103.19 [+0.00] [ 1202.099225] 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
# 103.19 [+0.01] [ 1202.099866] RSP: 002b:00007ffedf840b58 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
# 103.20 [+0.00] [ 1202.100161] RAX: ffffffffffffffda RBX: 0000555daa4ee3f0 RCX: 00007f4155b9f957
# 103.20 [+0.00] [ 1202.100447] RDX: 0000000000000001 RSI: 0000555daa4ee3f0 RDI: 0000000000000001
# 103.20 [+0.00] [ 1202.100724] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000002000
# 103.20 [+0.00] [ 1202.101003] R10: 0000000000000001 R11: 0000000000000246 R12: 0000555daa4d95e0
# 103.20 [+0.00] [ 1202.101289] R13: 0000555daa4ba2a0 R14: 0000000000000001 R15: 0000555daa4d95e0
| xx__-> echo $?
| 0
| xx__-> [ 1179.291165][ T8408] Mirror/redirect action on
| [ 1202.088434][    C3] irq 4: nobody cared (try booting with the "irqpoll" option)
[ 1202.089164][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1202.089599][    C3] Call Trace:
[ 1202.089762][    C3]  <IRQ>
[ 1202.089853][ C3] dump_stack_lvl (lib/dump_stack.c:122) 
[ 1202.090067][ C3] __report_bad_irq (kernel/irq/spurious.c:214) 
[ 1202.090267][ C3] note_interrupt (kernel/irq/spurious.c:423) 
[ 1202.090449][ C3] handle_irq_event (kernel/irq/handle.c:198 kernel/irq/handle.c:210) 
[ 1202.090647][ C3] handle_edge_irq (kernel/irq/chip.c:833) 
[ 1202.090844][ 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) 
[ 1202.091032][ C3] common_interrupt (arch/x86/kernel/irq.c:278 (discriminator 14)) 
[ 1202.091226][    C3]  </IRQ>
[ 1202.091325][    C3]  <TASK>
[ 1202.091421][ C3] asm_common_interrupt (./arch/x86/include/asm/idtentry.h:693) 
[ 1202.091609][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1202.091852][ C3] Code: 10 e8 b1 99 8d fd 48 89 ef e8 59 0a 8e 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 95 d7 01 7a <74> 0e 5b 5d c3 cc cc cc cc e8 2f c3 b1 fd eb dc 0f 1f 44 00 00 5b
All code
========
   0:	10 e8                	adc    %ch,%al
   2:	b1 99                	mov    $0x99,%cl
   4:	8d                   	(bad)
   5:	fd                   	std
   6:	48 89 ef             	mov    %rbp,%rdi
   9:	e8 59 0a 8e fd       	call   0xfffffffffd8e0a67
   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 95 d7 01 7a 	decl   %gs:0x7a01d795(%rip)        # 0x7a01d7bf
  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 2f c3 b1 fd       	call   0xfffffffffdb1c367
  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 2f c3 b1 fd       	call   0xfffffffffdb1c33d
   e:	eb dc                	jmp    0xffffffffffffffec
  10:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  15:	5b                   	pop    %rbx
[ 1202.092500][    C3] RSP: 0018:ffffc9000837fab8 EFLAGS: 00000286
[ 1202.092735][    C3] RAX: 0000000000000006 RBX: 0000000000000200 RCX: 1ffffffff1277807
[ 1202.093002][    C3] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8601eec1
[ 1202.093254][    C3] RBP: ffffffff89c7d260 R08: 0000000000000001 R09: fffffbfff1272918
[ 1202.093519][    C3] R10: ffffffff893948c7 R11: 0000000000000000 R12: ffffffff89c7d368
[ 1202.093790][    C3] R13: ffff888007bf1000 R14: ffffffff89c7d260 R15: 0000000000000286
[ 1202.094059][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 1202.094290][ C3] uart_write (drivers/tty/serial/serial_core.c:74 drivers/tty/serial/serial_core.c:634) 
[ 1202.094436][ C3] process_output_block (drivers/tty/n_tty.c:574) 
[ 1202.094633][ C3] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 1202.094858][ C3] n_tty_write (drivers/tty/n_tty.c:2390) 
[ 1202.095033][ C3] ? __pfx_n_tty_write (drivers/tty/n_tty.c:2360) 
[ 1202.095199][ C3] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 1202.095372][ C3] ? __pfx_woken_wake_function (kernel/sched/wait.c:439) 
[ 1202.095547][ C3] ? iterate_tty_write (drivers/tty/tty_io.c:954 drivers/tty/tty_io.c:973) 
[ 1202.095726][ C3] ? lock_acquire (kernel/locking/lockdep.c:5732) 
[ 1202.095893][ C3] ? iterate_tty_write (drivers/tty/tty_io.c:954 drivers/tty/tty_io.c:973) 
[ 1202.096065][ C3] iterate_tty_write (drivers/tty/tty_io.c:1021) 
[ 1202.096234][ C3] ? tty_ldisc_ref_wait (drivers/tty/tty_ldisc.c:244) 
[ 1202.096409][ C3] file_tty_write.constprop.0 (drivers/tty/tty_io.c:1096) 
[ 1202.096586][ C3] vfs_write (fs/read_write.c:497 fs/read_write.c:590) 
[ 1202.096722][ C3] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 1202.096893][ C3] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 1202.097062][ C3] ? __might_fault (mm/memory.c:6387 mm/memory.c:6380) 
[ 1202.097239][ C3] ? lock_acquire (kernel/locking/lockdep.c:5732) 
[ 1202.097439][ C3] ? __pfx_vfs_write (fs/read_write.c:571) 
[ 1202.097638][ C3] ? __might_fault (mm/memory.c:6387 mm/memory.c:6380) 
[ 1202.097837][ C3] ? __rseq_handle_notify_resume (kernel/rseq.c:316) 
[ 1202.098079][ C3] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1141) 
[ 1202.098274][ C3] ksys_write (fs/read_write.c:643) 
[ 1202.098416][ C3] ? __pfx_ksys_write (fs/read_write.c:633) 
[ 1202.098608][ C3] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 1202.098799][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1202.099036][    C3] RIP: 0033:0x7f4155b9f957
[ 1202.099225][ 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
[ 1202.099866][    C3] RSP: 002b:00007ffedf840b58 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 1202.100161][    C3] RAX: ffffffffffffffda RBX: 0000555daa4ee3f0 RCX: 00007f4155b9f957
[ 1202.100447][    C3] RDX: 0000000000000001 RSI: 0000555daa4ee3f0 RDI: 0000000000000001
[ 1202.100724][    C3] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000002000
[ 1202.101003][    C3] R10: 0000000000000001 R11: 0000000000000246 R12: 0000555daa4d95e0


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