[  837.458265] irq 51: nobody cared (try booting with the "irqpoll" option)
[  837.458340] CPU: 0 UID: 0 PID: 8814 Comm: perl Not tainted 6.19.0-rc3-virtme #1 PREEMPT(voluntary) 
[  837.458342] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  837.458344] Call Trace:
[  837.458347]  <IRQ>
[  837.458351]  dump_stack_lvl+0x4d/0x70
[  837.458357]  __report_bad_irq+0x35/0xb8
[  837.458360]  note_interrupt.cold+0x28/0x66
[  837.458361]  handle_irq_event+0x6e/0x80
[  837.458364]  handle_edge_irq+0xbc/0x180
[  837.458366]  __common_interrupt+0x40/0xd0
[  837.458368]  ? __sysvec_apic_timer_interrupt+0x52/0xf0
[  837.458370]  common_interrupt+0x7a/0x90
[  837.458374]  </IRQ>
[  837.458374]  <TASK>
[  837.458374]  asm_common_interrupt+0x26/0x40
[  837.458377] RIP: 0010:_raw_spin_unlock_irqrestore+0x1c/0x30
[  837.458380] 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
[  837.458381] RSP: 0018:ff30549780293d38 EFLAGS: 00000286
[  837.458383] RAX: 00000000ffffffff RBX: ff2fa96b41f64000 RCX: 0000000000000017
[  837.458383] RDX: ffffffffb3dcea75 RSI: 0000000000000282 RDI: ffffffffb50c1680
[  837.458384] RBP: 0000000000000001 R08: 0000000000000001 R09: ff2fa96b43c5d800
[  837.458384] R10: ff30549780293e68 R11: 0000000000000001 R12: ffffffffb50c1680
[  837.458385] R13: ff30549780355000 R14: ff2fa96b43c5d800 R15: 0000000000000282
[  837.458385]  ? rpm_suspend+0x185/0x5e0
[  837.458390]  uart_write+0xb4/0x270
[  837.458393]  n_tty_write+0x155/0x560
[  837.458396]  ? swake_up_all+0xd0/0xd0
[  837.458398]  file_tty_write.isra.0+0x15b/0x2a0
[  837.458399]  vfs_write+0x258/0x4d0
[  837.458402]  ? __hrtimer_run_queues+0x161/0x2a0
[  837.458405]  ksys_write+0x73/0xe0
[  837.458406]  do_syscall_64+0xa4/0xfc0
[  837.458408]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[  837.458409] RIP: 0033:0x7f03eba26c5e
[  837.458411] Code: 4d 89 d8 e8 14 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
[  837.458412] RSP: 002b:00007ffe7b90ab50 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[  837.458413] RAX: ffffffffffffffda RBX: 0000563b9efdb2c0 RCX: 00007f03eba26c5e
[  837.458413] RDX: 0000000000000001 RSI: 0000563b9efdb2c0 RDI: 0000000000000001
[  837.458414] RBP: 00007ffe7b90ab60 R08: 0000000000000000 R09: 0000000000000000
[  837.458414] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000001
[  837.458414] R13: 0000563b9ef9c010 R14: 0000000000000001 R15: 0000563b9efdb2c0
[  837.458415]  </TASK>
[  837.458416] handlers:
[  837.459775] [<000000002cba6882>] serial8250_interrupt
[  837.459805] Disabling IRQ #51