[  523.016945] Mirror/redirect action on
[  531.652129] clocksource: Long readout interval, skipping watchdog check: cs_nsec: 1477092076 wd_nsec: 1477091558
[  557.544839] irq 51: nobody cared (try booting with the "irqpoll" option)
[  557.544950] CPU: 0 UID: 0 PID: 12370 Comm: perl Not tainted 6.19.0-rc7-virtme #1 PREEMPT(voluntary) 
[  557.544953] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  557.544955] Call Trace:
[  557.544958]  <IRQ>
[  557.544961]  dump_stack_lvl+0x4d/0x70
[  557.544968]  __report_bad_irq+0x35/0xb8
[  557.544971]  note_interrupt.cold+0x28/0x66
[  557.544972]  handle_irq_event+0x6e/0x80
[  557.544975]  handle_edge_irq+0xbc/0x180
[  557.544977]  __common_interrupt+0x40/0xd0
[  557.544980]  ? __sysvec_apic_timer_interrupt+0x52/0xf0
[  557.544982]  common_interrupt+0x7a/0x90
[  557.544986]  </IRQ>
[  557.544986]  <TASK>
[  557.544987]  asm_common_interrupt+0x26/0x40
[  557.544989] RIP: 0010:_raw_spin_unlock_irqrestore+0x1c/0x30
[  557.544992] Code: 00 66 90 66 66 2e 0f 1f 84 00 00 00 00 00 f3 0f 1e fa 0f 1f 44 00 00 c6 07 00 f7 c6 00 02 00 00 74 01 fb 65 ff 0d e4 b2 e8 00 <74> 01 c3 0f 1f 44 00 00 c3 66 66 2e 0f 1f 84 00 00 00 00 00 f3 0f
[  557.544993] RSP: 0018:ff50554c07afbd38 EFLAGS: 00000286
[  557.544995] RAX: 00000000ffffffff RBX: ff110a9cc1f68000 RCX: 0000000000000017
[  557.544996] RDX: ffffffff935cf575 RSI: 0000000000000282 RDI: ffffffff948c2680
[  557.544996] RBP: 0000000000000001 R08: 0000000000000001 R09: ff110a9cc1dce800
[  557.544997] R10: ff50554c07afbe68 R11: 0000000000000001 R12: ffffffff948c2680
[  557.544997] R13: ff50554c00355000 R14: ff110a9cc1dce800 R15: 0000000000000282
[  557.544998]  ? rpm_suspend+0x185/0x5e0
[  557.545003]  uart_write+0xb4/0x270
[  557.545006]  n_tty_write+0x155/0x560
[  557.545008]  ? swake_up_all+0xd0/0xd0
[  557.545011]  file_tty_write.isra.0+0x15b/0x2a0
[  557.545012]  vfs_write+0x258/0x4d0
[  557.545015]  ? __hrtimer_run_queues+0x161/0x2a0
[  557.545018]  ksys_write+0x73/0xe0
[  557.545019]  do_syscall_64+0xa4/0xfc0
[  557.545021]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[  557.545022] RIP: 0033:0x7f796ad63c5e
[  557.545024] Code: 4d 89 d8 e8 34 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
[  557.545024] RSP: 002b:00007ffe8651ec90 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[  557.545025] RAX: ffffffffffffffda RBX: 0000564c8198c280 RCX: 00007f796ad63c5e
[  557.545026] RDX: 0000000000000001 RSI: 0000564c8198c280 RDI: 0000000000000001
[  557.545026] RBP: 00007ffe8651eca0 R08: 0000000000000000 R09: 0000000000000000
[  557.545026] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000001
[  557.545027] R13: 0000564c8194d010 R14: 0000000000000001 R15: 0000564c8198c280
[  557.545028]  </TASK>
[  557.545028] handlers:
[  557.546787] [<000000001bf7931e>] serial8250_interrupt
[  557.546827] Disabling IRQ #51