[  963.571081][    C3] irq 4: nobody cared (try booting with the "irqpoll" option)
[  963.571465][    C3] CPU: 3 UID: 0 PID: 11274 Comm: perl Not tainted 6.10.0-virtme #1
[  963.571726][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  963.572091][    C3] Call Trace:
[  963.572217][    C3]  <IRQ>
[  963.572305][    C3]  dump_stack_lvl+0x82/0xd0
[  963.572491][    C3]  __report_bad_irq+0x5f/0x180
[  963.572661][    C3]  note_interrupt+0x6b3/0x860
[  963.572826][    C3]  handle_irq_event+0x16d/0x1c0
[  963.572995][    C3]  handle_edge_irq+0x1fa/0xb60
[  963.573164][    C3]  __common_interrupt+0x82/0x170
[  963.573327][    C3]  common_interrupt+0x7e/0x90
[  963.573889][    C3]  </IRQ>
[  963.573973][    C3]  <TASK>
[  963.574063][    C3]  asm_common_interrupt+0x26/0x40
[  963.574225][    C3] RIP: 0010:_raw_spin_unlock_irqrestore+0x43/0x70
[  963.574441][    C3] Code: 10 e8 81 39 8e fd 48 89 ef e8 29 aa 8e 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 85 80 42 72 <74> 0e 5b 5d c3 cc cc cc cc e8 4f 77 b2 fd eb dc 0f 1f 44 00 00 5b
[  963.575009][    C3] RSP: 0018:ffffc9000160fab8 EFLAGS: 00000286
[  963.575217][    C3] RAX: 0000000000000006 RBX: 0000000000000200 RCX: 1ffffffff21f7010
[  963.575453][    C3] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8dc14851
[  963.575696][    C3] RBP: ffffffff91879320 R08: 0000000000000001 R09: fffffbfff21f2108
[  963.575936][    C3] R10: ffffffff90f90847 R11: 0000000000000000 R12: ffffffff91879428
[  963.576171][    C3] R13: ffff888007d4f000 R14: ffffffff91879320 R15: 0000000000000282
[  963.576417][    C3]  ? _raw_spin_unlock_irqrestore+0x51/0x70
[  963.576632][    C3]  uart_write+0x13e/0x320
[  963.576755][    C3]  process_output_block+0x13e/0x790
[  963.576917][    C3]  ? lockdep_hardirqs_on_prepare+0x275/0x410
[  963.577115][    C3]  n_tty_write+0x412/0x7a0
[  963.577283][    C3]  ? __pfx_n_tty_write+0x10/0x10
[  963.577439][    C3]  ? trace_lock_acquire+0x14d/0x1f0
[  963.577596][    C3]  ? __pfx_woken_wake_function+0x10/0x10
[  963.577762][    C3]  ? iterate_tty_write+0x95/0x540
[  963.577954][    C3]  ? lock_acquire+0x32/0xc0
[  963.578118][    C3]  ? iterate_tty_write+0x95/0x540
[  963.578280][    C3]  iterate_tty_write+0x228/0x540
[  963.578447][    C3]  ? tty_ldisc_ref_wait+0x28/0x80
[  963.578606][    C3]  file_tty_write.constprop.0+0x1db/0x370
[  963.578777][    C3]  vfs_write+0xa1b/0x10b0
[  963.578905][    C3]  ? __pfx_lock_acquire.part.0+0x10/0x10
[  963.579068][    C3]  ? __pfx_vfs_write+0x10/0x10
[  963.579228][    C3]  ? clockevents_program_event+0xf6/0x300
[  963.579410][    C3]  ? __fget_light+0x53/0x1e0
[  963.579572][    C3]  ? clockevents_program_event+0x1ea/0x300
[  963.579785][    C3]  ksys_write+0xf5/0x1e0
[  963.579918][    C3]  ? __pfx_ksys_write+0x10/0x10
[  963.580084][    C3]  do_syscall_64+0xc1/0x1d0
[  963.580241][    C3]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  963.580434][    C3] RIP: 0033:0x7f69d7f4d957
[  963.580594][    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
[  963.581162][    C3] RSP: 002b:00007ffc0424a1b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  963.581419][    C3] RAX: ffffffffffffffda RBX: 000056052e859250 RCX: 00007f69d7f4d957
[  963.581661][    C3] RDX: 0000000000000001 RSI: 000056052e859250 RDI: 0000000000000001
[  963.581890][    C3] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000002000
[  963.582121][    C3] R10: 0000000000000001 R11: 0000000000000246 R12: 000056052e8455c0
[  963.582349][    C3] R13: 000056052e8262a0 R14: 0000000000000001 R15: 000056052e8455c0
[  963.582586][    C3]  </TASK>
[  963.582702][    C3] handlers:
[  963.582829][    C3] [<ffffffff8c51e710>] serial8250_interrupt
[  963.583178][    C3] Disabling IRQ #4