[   22.428797] irq 52: nobody cared (try booting with the "irqpoll" option)
[   22.428862] CPU: 0 UID: 0 PID: 178 Comm: perl Not tainted 7.1.0-rc3-virtme #1 PREEMPT(lazy) 
[   22.428864] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   22.428865] Call Trace:
[   22.428868]  <IRQ>
[   22.428870]  dump_stack_lvl+0x4d/0x70
[   22.428882]  __report_bad_irq+0x35/0xb4
[   22.428884]  note_interrupt.cold+0x1a/0x58
[   22.428885]  handle_irq_event+0x6e/0x80
[   22.428888]  handle_edge_irq+0xc7/0x190
[   22.428890]  __common_interrupt+0x40/0xd0
[   22.428893]  common_interrupt+0x7a/0x90
[   22.428897]  </IRQ>
[   22.428897]  <TASK>
[   22.428897]  asm_common_interrupt+0x26/0x40
[   22.428899] RIP: 0010:_raw_spin_unlock_irqrestore+0x1c/0x30
[   22.428902] 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 34 f5 2a 01 <74> 01 c3 e8 cc 1c 33 ff c3 66 66 2e 0f 1f 84 00 00 00 00 00 f3 0f
[   22.428903] RSP: 0018:ff8fa8990040fd40 EFLAGS: 00000286
[   22.428905] RAX: 00000000ffffffff RBX: ff440f2d0207c000 RCX: 0000000000000017
[   22.428906] RDX: ffffffff88c77c34 RSI: 0000000000000286 RDI: ffffffff8a488000
[   22.428906] RBP: 0000000000000001 R08: 00000005143c1643 R09: 000000000000adb0
[   22.428907] R10: ff8fa8990040fe68 R11: 0000000000000001 R12: ffffffff8a488000
[   22.428907] R13: ff8fa899003172a0 R14: ff440f2d02f59800 R15: 0000000000000286
[   22.428908]  ? rpm_suspend+0x184/0x610
[   22.428911]  uart_write+0xc8/0x2a0
[   22.428914]  n_tty_write+0x15b/0x510
[   22.428917]  ? swake_up_all+0xf0/0xf0
[   22.428919]  file_tty_write.isra.0+0x147/0x2f0
[   22.428921]  vfs_write+0x257/0x5c0
[   22.428924]  ksys_write+0x7b/0x110
[   22.428924]  do_syscall_64+0x104/0xfc0
[   22.428926]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[   22.428927] RIP: 0033:0x7f55661b508e
[   22.428929] Code: 4d 89 d8 e8 94 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 03 ff ff ff 0f 1f 00 f3 0f 1e fa
[   22.428929] RSP: 002b:00007fff39280be0 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   22.428930] RAX: ffffffffffffffda RBX: 000055c2b4357090 RCX: 00007f55661b508e
[   22.428930] RDX: 0000000000000001 RSI: 000055c2b4357090 RDI: 0000000000000001
[   22.428931] RBP: 00007fff39280bf0 R08: 0000000000000000 R09: 0000000000000000
[   22.428931] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000001
[   22.428931] R13: 000055c2b431e010 R14: 0000000000000001 R15: 000055c2b4357090
[   22.428932]  </TASK>
[   22.428932] handlers:
[   22.430196] [<00000000a533f941>] serial8250_interrupt
[   22.430226] Disabling IRQ #52
[  190.163054] clocksource: Watchdog remote CPU 3 read timed out