======================================
| # 128.98 [+0.00] [ 2110.370463] vx100: left allmulticast mode
| # 128.98 [+0.00] [ 2110.370978] vx100: left promiscuous mode
| # 128.98 [+0.00] [ 2110.371466] br1: port 1(vx100) entered disabled state
| # 128.98 [+0.00] [ 2315.991193] irq 51: nobody cared (try booting with the "irqpoll" option)
# 128.99 [+0.00] [ 2315.991795] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
# 128.99 [+0.00] [ 2315.991798] Call Trace:
# 128.99 [+0.00] [ 2315.991800]  <IRQ>
# 128.99 [+0.00] [ 2315.991803]  dump_stack_lvl (lib/dump_stack.c:123)
# 128.99 [+0.00] [ 2315.991816]  __report_bad_irq (kernel/irq/spurious.c:170)
# 128.99 [+0.00] [ 2315.991826]  note_interrupt (kernel/irq/spurious.c:372)
# 129.00 [+0.00] [ 2315.991833]  handle_irq_event (kernel/irq/handle.c:245 kernel/irq/handle.c:257)
# 129.00 [+0.00] [ 2315.991841]  handle_edge_irq (kernel/irq/chip.c:857)
# 129.00 [+0.00] [ 2315.991852]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
# 129.00 [+0.00] [ 2315.991863]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 14))
# 129.00 [+0.00] [ 2315.991869]  </IRQ>
# 129.00 [+0.00] [ 2315.991870]  <TASK>
# 129.00 [+0.00] [ 2315.991874]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
# 129.01 [+0.00] [ 2315.991878] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194)
# 129.01 [+0.00] [ 2315.991885] Code: 74 24 10 e8 f1 48 ff fd 48 89 ef e8 19 98 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 d0 f3 fd 65 8b 05 b3 cb 07 02 85 c0 74 0a 5b 5d c3 e8 f7 5b
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	f1                   	int1
   5:	48 ff                	rex.W (bad)
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 19 98 ff fd       	call   0xfffffffffdff9829
  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 d0 f3 fd       	call   0xfffffffffdf3d0d9		<-- trapping instruction
  2f:	65 8b 05 b3 cb 07 02 	mov    %gs:0x207cbb3(%rip),%eax        # 0x207cbe9
  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:	f7                   	.byte 0xf7
  3f:	5b                   	pop    %rbx

Code starting with the faulting instruction
===========================================
   0:	e8 aa d0 f3 fd       	call   0xfffffffffdf3d0af
   5:	65 8b 05 b3 cb 07 02 	mov    %gs:0x207cbb3(%rip),%eax        # 0x207cbbf
   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:	f7                   	.byte 0xf7
  15:	5b                   	pop    %rbx
# 129.01 [+0.01] [ 2315.991888] RSP: 0018:ffffc90003ccfa88 EFLAGS: 00000206
# 129.02 [+0.00] [ 2315.991892] RAX: 0000000000000002 RBX: 0000000000000200 RCX: 0000000000000040
# 129.02 [+0.00] [ 2315.991894] RDX: 0000000000000000 RSI: ffffffffa6786c48 RDI: 0000000000000001
# 129.02 [+0.00] [ 2315.991896] RBP: ffffffffa906e560 R08: 0000000000000001 R09: 0000000000000001
# 129.03 [+0.00] [ 2315.991897] R10: ffffffffa7624057 R11: ffff888005ee8970 R12: 00000000ffffffff
# 129.03 [+0.00] [ 2315.991900] R13: 0000000000000001 R14: ffffffffa906e668 R15: 00000000ffffffff
# 129.03 [+0.00] [ 2315.991916]  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)
# 129.03 [+0.00] [ 2315.991930]  process_output_block (drivers/tty/n_tty.c:561)
# 129.03 [+0.00] [ 2315.991938]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194)
# 129.04 [+0.00] [ 2315.991945]  n_tty_write (drivers/tty/n_tty.c:2378)
# 129.04 [+0.00] [ 2315.991948]  ? _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)
# 129.04 [+0.00] [ 2315.991961]  ? n_tty_receive_signal_char (drivers/tty/n_tty.c:2348)
# 129.04 [+0.00] [ 2315.991967]  ? __init_waitqueue_head (kernel/sched/wait.c:458)
# 129.04 [+0.00] [ 2315.991976]  ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5831)
# 129.04 [+0.00] [ 2315.991981]  ? iterate_tty_write (drivers/tty/tty_io.c:939 drivers/tty/tty_io.c:958)
# 129.05 [+0.00] [ 2315.991992]  iterate_tty_write (drivers/tty/tty_io.c:1007)
# 129.05 [+0.00] [ 2315.991998]  ? tty_ldisc_ref_wait (drivers/tty/tty_ldisc.c:244)
# 129.05 [+0.00] [ 2315.992006]  file_tty_write.constprop.0 (drivers/tty/tty_io.c:1081)
# 129.05 [+0.00] [ 2315.992013]  vfs_write (fs/read_write.c:594 fs/read_write.c:686)
# 129.06 [+0.00] [ 2315.992024]  ? kernel_write (fs/read_write.c:667)
# 129.07 [+0.01] [ 2315.992030]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
# 129.07 [+0.00] [ 2315.992038]  ? trace_rseq_update (./include/trace/events/rseq.h:11 (discriminator 21))
# 129.07 [+0.00] [ 2315.992050]  ? __rseq_handle_notify_resume (kernel/rseq.c:442)
# 129.07 [+0.00] [ 2315.992061]  ksys_write (fs/read_write.c:738)
# 129.07 [+0.00] [ 2315.992065]  ? __ia32_sys_read (fs/read_write.c:728)
# 129.07 [+0.00] [ 2315.992070]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
# 129.08 [+0.00] [ 2315.992079]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
# 129.08 [+0.00] [ 2315.992086]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
# 129.08 [+0.00] [ 2315.992089] RIP: 0033:0x7fb78acf6257
# 129.08 [+0.00] [ 2315.992093] 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
# 129.09 [+0.01] [ 2315.992095] RSP: 002b:00007ffe58f12f08 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
# 129.09 [+0.00] [ 2315.992098] RAX: ffffffffffffffda RBX: 0000564c9c77d360 RCX: 00007fb78acf6257
# 129.09 [+0.00] [ 2315.992100] RDX: 0000000000000001 RSI: 0000564c9c77d360 RDI: 0000000000000001
# 129.10 [+0.00] [ 2315.992101] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000002000
# 129.10 [+0.00] [ 2315.992102] R10: 0000000000000001 R11: 0000000000000246 R12: 0000564c9c768600
# 129.10 [+0.00] [ 2315.992104] R13: 0000564c9c7492a0 R14: 0000000000000001 R15: 0000564c9c768600
| make: Leaving directory '/home/virtme/testing/wt-4/tools/testing/selftests'
| xx__-> echo $?
| 0
| xx__-> [ 2315.991193][    C0] irq 51: nobody cared (try booting with the "irqpoll" option)
[ 2315.991795][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2315.991798][    C0] Call Trace:
[ 2315.991800][    C0]  <IRQ>
[ 2315.991803][    C0]  dump_stack_lvl (lib/dump_stack.c:123)
[ 2315.991816][    C0]  __report_bad_irq (kernel/irq/spurious.c:170)
[ 2315.991826][    C0]  note_interrupt (kernel/irq/spurious.c:372)
[ 2315.991833][    C0]  handle_irq_event (kernel/irq/handle.c:245 kernel/irq/handle.c:257)
[ 2315.991841][    C0]  handle_edge_irq (kernel/irq/chip.c:857)
[ 2315.991852][    C0]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 2315.991863][    C0]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 14))
[ 2315.991869][    C0]  </IRQ>
[ 2315.991870][    C0]  <TASK>
[ 2315.991874][    C0]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 2315.991878][    C0] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194)
[ 2315.991885][    C0] Code: 74 24 10 e8 f1 48 ff fd 48 89 ef e8 19 98 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 d0 f3 fd 65 8b 05 b3 cb 07 02 85 c0 74 0a 5b 5d c3 e8 f7 5b
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	f1                   	int1
   5:	48 ff                	rex.W (bad)
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 19 98 ff fd       	call   0xfffffffffdff9829
  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 d0 f3 fd       	call   0xfffffffffdf3d0d9		<-- trapping instruction
  2f:	65 8b 05 b3 cb 07 02 	mov    %gs:0x207cbb3(%rip),%eax        # 0x207cbe9
  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:	f7                   	.byte 0xf7
  3f:	5b                   	pop    %rbx

Code starting with the faulting instruction
===========================================
   0:	e8 aa d0 f3 fd       	call   0xfffffffffdf3d0af
   5:	65 8b 05 b3 cb 07 02 	mov    %gs:0x207cbb3(%rip),%eax        # 0x207cbbf
   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:	f7                   	.byte 0xf7
  15:	5b                   	pop    %rbx
[ 2315.991888][    C0] RSP: 0018:ffffc90003ccfa88 EFLAGS: 00000206
[ 2315.991892][    C0] RAX: 0000000000000002 RBX: 0000000000000200 RCX: 0000000000000040
[ 2315.991894][    C0] RDX: 0000000000000000 RSI: ffffffffa6786c48 RDI: 0000000000000001
[ 2315.991896][    C0] RBP: ffffffffa906e560 R08: 0000000000000001 R09: 0000000000000001
[ 2315.991897][    C0] R10: ffffffffa7624057 R11: ffff888005ee8970 R12: 00000000ffffffff
[ 2315.991900][    C0] R13: 0000000000000001 R14: ffffffffa906e668 R15: 00000000ffffffff
[ 2315.991916][    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)
[ 2315.991930][    C0]  process_output_block (drivers/tty/n_tty.c:561)
[ 2315.991938][    C0]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194)
[ 2315.991945][    C0]  n_tty_write (drivers/tty/n_tty.c:2378)
[ 2315.991948][    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)
[ 2315.991961][    C0]  ? n_tty_receive_signal_char (drivers/tty/n_tty.c:2348)
[ 2315.991967][    C0]  ? __init_waitqueue_head (kernel/sched/wait.c:458)
[ 2315.991976][    C0]  ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5831)
[ 2315.991981][    C0]  ? iterate_tty_write (drivers/tty/tty_io.c:939 drivers/tty/tty_io.c:958)
[ 2315.991992][    C0]  iterate_tty_write (drivers/tty/tty_io.c:1007)
[ 2315.991998][    C0]  ? tty_ldisc_ref_wait (drivers/tty/tty_ldisc.c:244)
[ 2315.992006][    C0]  file_tty_write.constprop.0 (drivers/tty/tty_io.c:1081)
[ 2315.992013][    C0]  vfs_write (fs/read_write.c:594 fs/read_write.c:686)
[ 2315.992024][    C0]  ? kernel_write (fs/read_write.c:667)
[ 2315.992030][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[ 2315.992038][    C0]  ? trace_rseq_update (./include/trace/events/rseq.h:11 (discriminator 21))
[ 2315.992050][    C0]  ? __rseq_handle_notify_resume (kernel/rseq.c:442)
[ 2315.992061][    C0]  ksys_write (fs/read_write.c:738)
[ 2315.992065][    C0]  ? __ia32_sys_read (fs/read_write.c:728)
[ 2315.992070][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[ 2315.992079][    C0]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[ 2315.992086][    C0]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 2315.992089][    C0] RIP: 0033:0x7fb78acf6257
[ 2315.992093][    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
[ 2315.992095][    C0] RSP: 002b:00007ffe58f12f08 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 2315.992098][    C0] RAX: ffffffffffffffda RBX: 0000564c9c77d360 RCX: 00007fb78acf6257
[ 2315.992100][    C0] RDX: 0000000000000001 RSI: 0000564c9c77d360 RDI: 0000000000000001
[ 2315.992101][    C0] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000002000
[ 2315.992102][    C0] R10: 0000000000000001 R11: 0000000000000246 R12: 0000564c9c768600


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