[  928.232514][    C3] irq 4: nobody cared (try booting with the "irqpoll" option)
[  928.232916][    C3] CPU: 3 PID: 3673 Comm: perl Not tainted 6.9.0-virtme #1
[  928.233137][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  928.233521][    C3] Call Trace:
[  928.233665][    C3]  <IRQ>
[  928.233760][    C3]  dump_stack_lvl+0x82/0xd0
[  928.233948][    C3]  __report_bad_irq+0x5f/0x180
[  928.234131][    C3]  note_interrupt+0x6b3/0x860
[  928.234308][    C3]  handle_irq_event+0x16d/0x1c0
[  928.234478][    C3]  handle_edge_irq+0x1fa/0xb60
[  928.234653][    C3]  __common_interrupt+0x82/0x170
[  928.234825][    C3]  common_interrupt+0x7e/0x90
[  928.234999][    C3]  </IRQ>
[  928.235089][    C3]  <TASK>
[  928.235205][    C3]  asm_common_interrupt+0x26/0x40
[  928.235362][    C3] RIP: 0010:_raw_spin_unlock_irqrestore+0x43/0x70
[  928.235561][    C3] Code: 10 e8 d1 c0 93 fd 48 89 ef e8 49 31 94 fd 81 e3 00 02 00 00 75 1d 9c 58 f6 c4 02 75 29 48 85 db 74 01 fb 65 ff 0d 45 21 e8 48 <74> 0e 5b 5d c3 cc cc cc cc e8 ef a0 b7 fd eb dc 0f 1f 44 00 00 5b
[  928.236119][    C3] RSP: 0018:ffffc9000107fac0 EFLAGS: 00000286
[  928.236324][    C3] RAX: 0000000000000002 RBX: 0000000000000200 RCX: 1ffffffff746ef1a
[  928.236573][    C3] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffb71ba6d1
[  928.236806][    C3] RBP: ffffffffbac39020 R08: 0000000000000001 R09: fffffbfff746a0a8
[  928.237051][    C3] R10: ffffffffba350547 R11: 0000000000000000 R12: 0000000000000001
[  928.237288][    C3] R13: 0000000000000282 R14: ffffffffbac39020 R15: ffff888005530800
[  928.237530][    C3]  ? _raw_spin_unlock_irqrestore+0x51/0x70
[  928.237749][    C3]  uart_write+0x13d/0x330
[  928.237872][    C3]  process_output_block+0x13e/0x790
[  928.238028][    C3]  ? lockdep_hardirqs_on_prepare+0x275/0x410
[  928.238222][    C3]  n_tty_write+0x412/0x7a0
[  928.238392][    C3]  ? __pfx_n_tty_write+0x10/0x10
[  928.238554][    C3]  ? trace_lock_acquire+0x14d/0x1f0
[  928.238720][    C3]  ? __pfx_woken_wake_function+0x10/0x10
[  928.238885][    C3]  ? iterate_tty_write+0x95/0x540
[  928.239043][    C3]  ? lock_acquire+0x32/0xc0
[  928.239198][    C3]  ? iterate_tty_write+0x95/0x540
[  928.239359][    C3]  iterate_tty_write+0x228/0x540
[  928.239522][    C3]  ? tty_ldisc_ref_wait+0x28/0x80
[  928.239684][    C3]  file_tty_write.constprop.0+0x1db/0x370
[  928.239848][    C3]  vfs_write+0xa18/0x10b0
[  928.239967][    C3]  ? __pfx_lock_acquire.part.0+0x10/0x10
[  928.240128][    C3]  ? __pfx_vfs_write+0x10/0x10
[  928.240283][    C3]  ? clockevents_program_event+0xf6/0x300
[  928.240447][    C3]  ? __fget_light+0x53/0x1e0
[  928.240611][    C3]  ? clockevents_program_event+0x1ea/0x300
[  928.240807][    C3]  ksys_write+0xf5/0x1e0
[  928.240928][    C3]  ? __pfx_ksys_write+0x10/0x10
[  928.241095][    C3]  do_syscall_64+0xc1/0x1d0
[  928.241261][    C3]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  928.241456][    C3] RIP: 0033:0x7fdf87297957
[  928.241613][    C3] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
[  928.242158][    C3] RSP: 002b:00007ffc50ff9a28 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  928.242408][    C3] RAX: ffffffffffffffda RBX: 0000562ac1f3b1d0 RCX: 00007fdf87297957
[  928.242651][    C3] RDX: 0000000000000001 RSI: 0000562ac1f3b1d0 RDI: 0000000000000001
[  928.242884][    C3] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000002000
[  928.243118][    C3] R10: 0000000000000001 R11: 0000000000000246 R12: 0000562ac1f275c0
[  928.243348][    C3] R13: 0000562ac1f082a0 R14: 0000000000000001 R15: 0000562ac1f275c0
[  928.243598][    C3]  </TASK>
[  928.243722][    C3] handlers:
[  928.243837][    C3] [<ffffffffb5af3f50>] serial8250_interrupt
[  928.244387][    C3] Disabling IRQ #4