[  849.392060] irq 51: nobody cared (try booting with the "irqpoll" option)
[  849.392184] CPU: 0 UID: 0 PID: 10229 Comm: perl Not tainted 6.19.0-rc3-virtme #1 PREEMPT(voluntary) 
[  849.392186] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  849.392188] Call Trace:
[  849.392191]  <IRQ>
[  849.392195]  dump_stack_lvl+0x4d/0x70
[  849.392202]  __report_bad_irq+0x35/0xb8
[  849.392204]  note_interrupt.cold+0x28/0x66
[  849.392205]  handle_irq_event+0x6e/0x80
[  849.392208]  handle_edge_irq+0xbc/0x180
[  849.392210]  __common_interrupt+0x40/0xd0
[  849.392213]  ? __sysvec_apic_timer_interrupt+0x52/0xf0
[  849.392214]  common_interrupt+0x7a/0x90
[  849.392218]  </IRQ>
[  849.392218]  <TASK>
[  849.392219]  asm_common_interrupt+0x26/0x40
[  849.392221] RIP: 0010:_raw_spin_unlock_irqrestore+0x1c/0x30
[  849.392224] 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
[  849.392225] RSP: 0018:ff3b0b2f03c23d38 EFLAGS: 00000286
[  849.392227] RAX: 00000000ffffffff RBX: ff14d4d2c1f64000 RCX: 0000000000000017
[  849.392228] RDX: ffffffffb85ce8f5 RSI: 0000000000000282 RDI: ffffffffb98c1680
[  849.392228] RBP: 0000000000000001 R08: 0000000000000001 R09: ff14d4d2c23bc400
[  849.392228] R10: ff3b0b2f03c23e68 R11: 0000000000000001 R12: ffffffffb98c1680
[  849.392229] R13: ff3b0b2f0034d000 R14: ff14d4d2c23bc400 R15: 0000000000000282
[  849.392229]  ? rpm_suspend+0x185/0x5e0
[  849.392234]  uart_write+0xb4/0x270
[  849.392237]  n_tty_write+0x155/0x560
[  849.392239]  ? swake_up_all+0xd0/0xd0
[  849.392241]  file_tty_write.isra.0+0x15b/0x2a0
[  849.392242]  vfs_write+0x258/0x4d0
[  849.392245]  ? __hrtimer_run_queues+0x161/0x2a0
[  849.392248]  ksys_write+0x73/0xe0
[  849.392249]  do_syscall_64+0xa4/0xfc0
[  849.392251]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[  849.392252] RIP: 0033:0x7febe2975c5e
[  849.392254] 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
[  849.392255] RSP: 002b:00007ffebd68efb0 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[  849.392256] RAX: ffffffffffffffda RBX: 0000556bc5e911f0 RCX: 00007febe2975c5e
[  849.392256] RDX: 0000000000000001 RSI: 0000556bc5e911f0 RDI: 0000000000000001
[  849.392256] RBP: 00007ffebd68efc0 R08: 0000000000000000 R09: 0000000000000000
[  849.392257] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000001
[  849.392257] R13: 0000556bc5e52010 R14: 0000000000000001 R15: 0000556bc5e911f0
[  849.392258]  </TASK>
[  849.392258] handlers:
[  849.393990] [<000000003212dfeb>] serial8250_interrupt
[  849.394030] Disabling IRQ #51