[  434.754381][    C3] irq 4: nobody cared (try booting with the "irqpoll" option)
[  434.754741][    C3] CPU: 3 UID: 0 PID: 2566 Comm: perl Not tainted 6.12.0-rc4-virtme #1
[  434.754975][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  434.755331][    C3] Call Trace:
[  434.755462][    C3]  <IRQ>
[  434.755545][    C3]  dump_stack_lvl+0x82/0xd0
[  434.755726][    C3]  __report_bad_irq+0x5f/0x180
[  434.755887][    C3]  note_interrupt+0x6b3/0x860
[  434.756052][    C3]  handle_irq_event+0x16d/0x1c0
[  434.756213][    C3]  handle_edge_irq+0x1fa/0xb60
[  434.756375][    C3]  __common_interrupt+0x82/0x170
[  434.756532][    C3]  common_interrupt+0x81/0xa0
[  434.756690][    C3]  </IRQ>
[  434.756776][    C3]  <TASK>
[  434.756858][    C3]  asm_common_interrupt+0x26/0x40
[  434.757025][    C3] RIP: 0010:_raw_spin_unlock_irqrestore+0x43/0x70
[  434.757227][    C3] Code: 10 e8 d1 29 87 fd 48 89 ef e8 e9 9a 87 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 25 94 da 79 <74> 0e 5b 5d c3 cc cc cc cc e8 ff 6c ac fd eb dc 0f 1f 44 00 00 5b
[  434.757768][    C3] RSP: 0018:ffffc90003fcfaa0 EFLAGS: 00000286
[  434.757981][    C3] RAX: 0000000000000002 RBX: 0000000000000200 RCX: 1ffffffff12bf2a6
[  434.758218][    C3] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff862934f1
[  434.758455][    C3] RBP: ffffffff89ebd420 R08: 0000000000000001 R09: fffffbfff12ba3d0
[  434.758716][    C3] R10: ffffffff895d1e87 R11: 0000000000000000 R12: 00000000ffffffff
[  434.758959][    C3] R13: 0000000000000001 R14: ffffffff89ebd528 R15: 00000000ffffffff
[  434.759203][    C3]  ? _raw_spin_unlock_irqrestore+0x51/0x70
[  434.759407][    C3]  uart_write+0x220/0x920
[  434.759551][    C3]  process_output_block+0x13e/0x790
[  434.759717][    C3]  ? lockdep_hardirqs_on_prepare+0x275/0x410
[  434.759912][    C3]  n_tty_write+0x40c/0x790
[  434.760072][    C3]  ? __pfx_n_tty_write+0x10/0x10
[  434.760225][    C3]  ? trace_lock_acquire+0x14d/0x1f0
[  434.760383][    C3]  ? __pfx_woken_wake_function+0x10/0x10
[  434.760545][    C3]  ? iterate_tty_write+0x8f/0x540
[  434.760700][    C3]  ? lock_acquire+0x32/0xc0
[  434.760860][    C3]  ? iterate_tty_write+0x8f/0x540
[  434.761041][    C3]  iterate_tty_write+0x222/0x540
[  434.761206][    C3]  ? tty_ldisc_ref_wait+0x28/0x80
[  434.761370][    C3]  file_tty_write.constprop.0+0x1cf/0x360
[  434.761531][    C3]  vfs_write+0xa77/0x11d0
[  434.761661][    C3]  ? __pfx___lock_release+0x10/0x10
[  434.761829][    C3]  ? trace_lock_acquire+0x14d/0x1f0
[  434.761988][    C3]  ? __might_fault+0xc3/0x170
[  434.762148][    C3]  ? lock_acquire+0x32/0xc0
[  434.762309][    C3]  ? __pfx_vfs_write+0x10/0x10
[  434.762480][    C3]  ? __might_fault+0x11b/0x170
[  434.762643][    C3]  ? __rseq_handle_notify_resume+0x354/0x4e0
[  434.762853][    C3]  ksys_write+0xf5/0x1e0
[  434.762972][    C3]  ? __pfx_ksys_write+0x10/0x10
[  434.763141][    C3]  do_syscall_64+0xc1/0x1d0
[  434.763299][    C3]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  434.763499][    C3] RIP: 0033:0x7f7a7e9a3957
[  434.763657][    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
[  434.764203][    C3] RSP: 002b:00007ffeae007f68 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  434.764440][    C3] RAX: ffffffffffffffda RBX: 000055f5e2b821f0 RCX: 00007f7a7e9a3957
[  434.764675][    C3] RDX: 0000000000000001 RSI: 000055f5e2b821f0 RDI: 0000000000000001
[  434.764906][    C3] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000002000
[  434.765134][    C3] R10: 0000000000000001 R11: 0000000000000246 R12: 000055f5e2b6d5e0
[  434.765366][    C3] R13: 000055f5e2b4e2a0 R14: 0000000000000001 R15: 000055f5e2b6d5e0
[  434.765607][    C3]  </TASK>
[  434.765737][    C3] handlers:
[  434.765863][    C3] [<ffffffff84b6ee70>] serial8250_interrupt
[  434.766193][    C3] Disabling IRQ #4