[ 1060.328236][    C3] irq 4: nobody cared (try booting with the "irqpoll" option)
[ 1060.328676][    C3] CPU: 3 UID: 0 PID: 4681 Comm: perl Not tainted 6.11.0-rc2-virtme #1
[ 1060.328940][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1060.329321][    C3] Call Trace:
[ 1060.329459][    C3]  <IRQ>
[ 1060.329559][    C3]  dump_stack_lvl+0x82/0xd0
[ 1060.329744][    C3]  __report_bad_irq+0x5f/0x180
[ 1060.329928][    C3]  note_interrupt+0x6b3/0x860
[ 1060.330109][    C3]  handle_irq_event+0x16d/0x1c0
[ 1060.330288][    C3]  handle_edge_irq+0x1fa/0xb60
[ 1060.330466][    C3]  __common_interrupt+0x82/0x170
[ 1060.330641][    C3]  common_interrupt+0x7e/0x90
[ 1060.330811][    C3]  </IRQ>
[ 1060.330901][    C3]  <TASK>
[ 1060.330989][    C3]  asm_common_interrupt+0x26/0x40
[ 1060.331167][    C3] RIP: 0010:_raw_spin_unlock_irqrestore+0x43/0x70
[ 1060.331388][    C3] Code: 10 e8 91 0c 8e fd 48 89 ef e8 39 7d 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 25 49 82 63 <74> 0e 5b 5d c3 cc cc cc cc e8 4f 33 b2 fd eb dc 0f 1f 44 00 00 5b
[ 1060.331990][    C3] RSP: 0018:ffffc9000286fab8 EFLAGS: 00000286
[ 1060.332269][    C3] RAX: 0000000000000006 RBX: 0000000000000200 RCX: 1ffffffff3f77242
[ 1060.332528][    C3] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff9c817f71
[ 1060.332779][    C3] RBP: ffffffffa047a320 R08: 0000000000000001 R09: fffffbfff3f72308
[ 1060.333030][    C3] R10: ffffffff9fb91847 R11: 0000000000000000 R12: ffffffffa047a428
[ 1060.333283][    C3] R13: ffff888006983400 R14: ffffffffa047a320 R15: 0000000000000282
[ 1060.333555][    C3]  ? _raw_spin_unlock_irqrestore+0x51/0x70
[ 1060.333778][    C3]  uart_write+0x13e/0x320
[ 1060.333911][    C3]  process_output_block+0x13e/0x790
[ 1060.334084][    C3]  ? lockdep_hardirqs_on_prepare+0x275/0x410
[ 1060.334301][    C3]  n_tty_write+0x412/0x7a0
[ 1060.334477][    C3]  ? __pfx_n_tty_write+0x10/0x10
[ 1060.334656][    C3]  ? trace_lock_acquire+0x14d/0x1f0
[ 1060.334831][    C3]  ? __pfx_woken_wake_function+0x10/0x10
[ 1060.335008][    C3]  ? iterate_tty_write+0x95/0x540
[ 1060.335182][    C3]  ? lock_acquire+0x32/0xc0
[ 1060.335352][    C3]  ? iterate_tty_write+0x95/0x540
[ 1060.335526][    C3]  iterate_tty_write+0x228/0x540
[ 1060.335698][    C3]  ? tty_ldisc_ref_wait+0x28/0x80
[ 1060.335873][    C3]  file_tty_write.constprop.0+0x1db/0x370
[ 1060.336047][    C3]  vfs_write+0xa1b/0x10b0
[ 1060.336188][    C3]  ? __pfx___lock_release+0x10/0x10
[ 1060.336360][    C3]  ? trace_lock_acquire+0x14d/0x1f0
[ 1060.336531][    C3]  ? __might_fault+0xc3/0x170
[ 1060.336706][    C3]  ? lock_acquire+0x32/0xc0
[ 1060.336876][    C3]  ? __pfx_vfs_write+0x10/0x10
[ 1060.337057][    C3]  ? __might_fault+0x11b/0x170
[ 1060.337236][    C3]  ? __fget_light+0x53/0x1e0
[ 1060.337411][    C3]  ksys_write+0xf5/0x1e0
[ 1060.337549][    C3]  ? __pfx_ksys_write+0x10/0x10
[ 1060.337730][    C3]  do_syscall_64+0xc1/0x1d0
[ 1060.337911][    C3]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 1060.338118][    C3] RIP: 0033:0x7fe63a7f6957
[ 1060.338291][    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
[ 1060.338881][    C3] RSP: 002b:00007ffc537d4ee8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 1060.339140][    C3] RAX: ffffffffffffffda RBX: 00005610d65c61d0 RCX: 00007fe63a7f6957
[ 1060.339392][    C3] RDX: 0000000000000001 RSI: 00005610d65c61d0 RDI: 0000000000000001
[ 1060.339639][    C3] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000002000
[ 1060.339890][    C3] R10: 0000000000000001 R11: 0000000000000246 R12: 00005610d65b25c0
[ 1060.340139][    C3] R13: 00005610d65932a0 R14: 0000000000000001 R15: 00005610d65b25c0
[ 1060.340404][    C3]  </TASK>
[ 1060.340531][    C3] handlers:
[ 1060.340659][    C3] [<ffffffff9b11df70>] serial8250_interrupt
[ 1060.341213][    C3] Disabling IRQ #4