[  210.939966] irq 51: nobody cared (try booting with the "irqpoll" option)
[  210.940054] CPU: 0 UID: 0 PID: 1567 Comm: perl Not tainted 6.19.0-rc8-virtme #1 PREEMPT(voluntary) 
[  210.940057] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  210.940059] Call Trace:
[  210.940062]  <IRQ>
[  210.940066]  dump_stack_lvl+0x4d/0x70
[  210.940074]  __report_bad_irq+0x35/0xb8
[  210.940078]  note_interrupt.cold+0x28/0x66
[  210.940079]  handle_irq_event+0x6e/0x80
[  210.940083]  handle_edge_irq+0xbc/0x180
[  210.940086]  __common_interrupt+0x40/0xd0
[  210.940089]  ? __sysvec_apic_timer_interrupt+0x52/0xf0
[  210.940091]  common_interrupt+0x7a/0x90
[  210.940096]  </IRQ>
[  210.940097]  <TASK>
[  210.940097]  asm_common_interrupt+0x26/0x40
[  210.940100] RIP: 0010:_raw_spin_unlock_irqrestore+0x1c/0x30
[  210.940104] 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 c2 e8 00 <74> 01 c3 0f 1f 44 00 00 c3 66 66 2e 0f 1f 84 00 00 00 00 00 f3 0f
[  210.940105] RSP: 0018:ff7376b481b9fd38 EFLAGS: 00000286
[  210.940108] RAX: 00000000ffffffff RBX: ff43cc5041fa8000 RCX: 0000000000000017
[  210.940109] RDX: ffffffff887cf675 RSI: 0000000000000282 RDI: ffffffff89ac2680
[  210.940110] RBP: 0000000000000001 R08: 0000000000000001 R09: ff43cc5041f16c00
[  210.940110] R10: ff7376b481b9fe68 R11: 0000000000000001 R12: ffffffff89ac2680
[  210.940111] R13: ff7376b480355000 R14: ff43cc5041f16c00 R15: 0000000000000282
[  210.940112]  ? rpm_suspend+0x185/0x5e0
[  210.940117]  uart_write+0xb4/0x270
[  210.940120]  n_tty_write+0x155/0x560
[  210.940123]  ? swake_up_all+0xd0/0xd0
[  210.940125]  file_tty_write.isra.0+0x15b/0x2a0
[  210.940127]  vfs_write+0x258/0x4d0
[  210.940131]  ? __hrtimer_run_queues+0x161/0x2a0
[  210.940134]  ksys_write+0x73/0xe0
[  210.940135]  do_syscall_64+0xa4/0xfc0
[  210.940137]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[  210.940138] RIP: 0033:0x7f7dcc239c5e
[  210.940141] 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
[  210.940142] RSP: 002b:00007ffea842be90 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[  210.940143] RAX: ffffffffffffffda RBX: 00005596bc5e2240 RCX: 00007f7dcc239c5e
[  210.940144] RDX: 0000000000000001 RSI: 00005596bc5e2240 RDI: 0000000000000001
[  210.940144] RBP: 00007ffea842bea0 R08: 0000000000000000 R09: 0000000000000000
[  210.940145] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000001
[  210.940145] R13: 00005596bc5a3010 R14: 0000000000000001 R15: 00005596bc5e2240
[  210.940147]  </TASK>
[  210.940147] handlers:
[  210.941542] [<0000000044da37f7>] serial8250_interrupt
[  210.941576] Disabling IRQ #51