[ 1296.852024][    C3] irq 4: nobody cared (try booting with the "irqpoll" option)
[ 1296.852407][    C3] CPU: 3 UID: 0 PID: 5755 Comm: perl Not tainted 6.12.0-rc3-virtme #1
[ 1296.852649][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1296.853007][    C3] Call Trace:
[ 1296.853135][    C3]  <IRQ>
[ 1296.853228][    C3]  dump_stack_lvl+0x82/0xd0
[ 1296.853413][    C3]  __report_bad_irq+0x5f/0x180
[ 1296.853584][    C3]  note_interrupt+0x6b3/0x860
[ 1296.853758][    C3]  handle_irq_event+0x16d/0x1c0
[ 1296.853940][    C3]  handle_edge_irq+0x1fa/0xb60
[ 1296.854113][    C3]  __common_interrupt+0x82/0x170
[ 1296.854282][    C3]  common_interrupt+0x81/0xa0
[ 1296.854447][    C3]  </IRQ>
[ 1296.854536][    C3]  <TASK>
[ 1296.854622][    C3]  asm_common_interrupt+0x26/0x40
[ 1296.854789][    C3] RIP: 0010:_raw_spin_unlock_irqrestore+0x43/0x70
[ 1296.855000][    C3] Code: 10 e8 51 99 87 fd 48 89 ef e8 69 0a 88 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 e5 06 3b 6d <74> 0e 5b 5d c3 cc cc cc cc e8 1f dc ac fd eb dc 0f 1f 44 00 00 5b
[ 1296.855578][    C3] RSP: 0018:ffffc9000343faa0 EFLAGS: 00000286
[ 1296.855777][    C3] RAX: 0000000000000002 RBX: 0000000000000200 RCX: 1ffffffff2bfe8a6
[ 1296.856015][    C3] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff92c8c1f1
[ 1296.856250][    C3] RBP: ffffffff968b83e0 R08: 0000000000000001 R09: fffffbfff2bf99d0
[ 1296.856510][    C3] R10: ffffffff95fcce87 R11: 0000000000000000 R12: 00000000ffffffff
[ 1296.856756][    C3] R13: 0000000000000001 R14: ffffffff968b84e8 R15: 00000000ffffffff
[ 1296.857003][    C3]  ? _raw_spin_unlock_irqrestore+0x51/0x70
[ 1296.857211][    C3]  uart_write+0x220/0x920
[ 1296.857338][    C3]  process_output_block+0x13e/0x790
[ 1296.857506][    C3]  ? lockdep_hardirqs_on_prepare+0x275/0x410
[ 1296.857704][    C3]  n_tty_write+0x40c/0x790
[ 1296.857871][    C3]  ? __pfx_n_tty_write+0x10/0x10
[ 1296.858028][    C3]  ? trace_lock_acquire+0x14d/0x1f0
[ 1296.858197][    C3]  ? __pfx_woken_wake_function+0x10/0x10
[ 1296.858356][    C3]  ? iterate_tty_write+0x8f/0x540
[ 1296.858513][    C3]  ? lock_acquire+0x32/0xc0
[ 1296.858673][    C3]  ? iterate_tty_write+0x8f/0x540
[ 1296.858837][    C3]  iterate_tty_write+0x222/0x540
[ 1296.859002][    C3]  ? tty_ldisc_ref_wait+0x28/0x80
[ 1296.859161][    C3]  file_tty_write.constprop.0+0x1cf/0x360
[ 1296.859327][    C3]  vfs_write+0xa77/0x11d0
[ 1296.859460][    C3]  ? __pfx___lock_release+0x10/0x10
[ 1296.859626][    C3]  ? trace_lock_acquire+0x14d/0x1f0
[ 1296.859786][    C3]  ? __might_fault+0xc3/0x170
[ 1296.859941][    C3]  ? lock_acquire+0x32/0xc0
[ 1296.860107][    C3]  ? __pfx_vfs_write+0x10/0x10
[ 1296.860271][    C3]  ? __might_fault+0x11b/0x170
[ 1296.860436][    C3]  ? __rseq_handle_notify_resume+0x354/0x4e0
[ 1296.860638][    C3]  ksys_write+0xf5/0x1e0
[ 1296.860762][    C3]  ? __pfx_ksys_write+0x10/0x10
[ 1296.860936][    C3]  do_syscall_64+0xc1/0x1d0
[ 1296.861096][    C3]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 1296.861295][    C3] RIP: 0033:0x7fafaf6ad957
[ 1296.861461][    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
[ 1296.862017][    C3] RSP: 002b:00007ffc301d12a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 1296.862261][    C3] RAX: ffffffffffffffda RBX: 000055898be933f0 RCX: 00007fafaf6ad957
[ 1296.862497][    C3] RDX: 0000000000000001 RSI: 000055898be933f0 RDI: 0000000000000001
[ 1296.862733][    C3] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000002000
[ 1296.862968][    C3] R10: 0000000000000001 R11: 0000000000000246 R12: 000055898be7e5e0
[ 1296.863201][    C3] R13: 000055898be5f2a0 R14: 0000000000000001 R15: 000055898be7e5e0
[ 1296.863455][    C3]  </TASK>
[ 1296.863571][    C3] handlers:
[ 1296.863701][    C3] [<ffffffff9156e4f0>] serial8250_interrupt
[ 1296.864064][    C3] Disabling IRQ #4