[ 1722.354118][    C3] irq 4: nobody cared (try booting with the "irqpoll" option)
[ 1722.354590][    C3] CPU: 3 UID: 0 PID: 11004 Comm: perl Not tainted 6.11.0-rc6-virtme #1
[ 1722.354877][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1722.355285][    C3] Call Trace:
[ 1722.355432][    C3]  <IRQ>
[ 1722.355530][    C3]  dump_stack_lvl+0x82/0xd0
[ 1722.355752][    C3]  __report_bad_irq+0x5f/0x180
[ 1722.355942][    C3]  note_interrupt+0x6b3/0x860
[ 1722.356141][    C3]  handle_irq_event+0x16d/0x1c0
[ 1722.356352][    C3]  handle_edge_irq+0x1fa/0xb60
[ 1722.356544][    C3]  __common_interrupt+0x82/0x170
[ 1722.356734][    C3]  common_interrupt+0x7e/0x90
[ 1722.356927][    C3]  </IRQ>
[ 1722.357035][    C3]  <TASK>
[ 1722.357137][    C3]  asm_common_interrupt+0x26/0x40
[ 1722.357340][    C3] RIP: 0010:_raw_spin_unlock_irqrestore+0x43/0x70
[ 1722.357589][    C3] Code: 10 e8 b1 99 8d fd 48 89 ef e8 59 0a 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 95 d7 61 4e <74> 0e 5b 5d c3 cc cc cc cc e8 2f c3 b1 fd eb dc 0f 1f 44 00 00 5b
[ 1722.358251][    C3] RSP: 0018:ffffc900016efab8 EFLAGS: 00000286
[ 1722.358485][    C3] RAX: 0000000000000006 RBX: 0000000000000200 RCX: 1ffffffff69b786b
[ 1722.358767][    C3] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffb1a1eec1
[ 1722.359041][    C3] RBP: ffffffffb567d260 R08: 0000000000000001 R09: fffffbfff69b2918
[ 1722.359321][    C3] R10: ffffffffb4d948c7 R11: 0000000000000000 R12: ffffffffb567d368
[ 1722.359599][    C3] R13: ffff888010aee400 R14: ffffffffb567d260 R15: 0000000000000286
[ 1722.359898][    C3]  ? _raw_spin_unlock_irqrestore+0x51/0x70
[ 1722.360146][    C3]  uart_write+0x13e/0x320
[ 1722.360296][    C3]  process_output_block+0x13e/0x790
[ 1722.360484][    C3]  ? lockdep_hardirqs_on_prepare+0x275/0x410
[ 1722.360715][    C3]  n_tty_write+0x412/0x7a0
[ 1722.360917][    C3]  ? __pfx_n_tty_write+0x10/0x10
[ 1722.361104][    C3]  ? trace_lock_acquire+0x14d/0x1f0
[ 1722.361297][    C3]  ? __pfx_woken_wake_function+0x10/0x10
[ 1722.361484][    C3]  ? iterate_tty_write+0x95/0x540
[ 1722.361666][    C3]  ? lock_acquire+0x32/0xc0
[ 1722.361850][    C3]  ? iterate_tty_write+0x95/0x540
[ 1722.362038][    C3]  iterate_tty_write+0x228/0x540
[ 1722.362227][    C3]  ? tty_ldisc_ref_wait+0x28/0x80
[ 1722.362421][    C3]  file_tty_write.constprop.0+0x1db/0x370
[ 1722.362617][    C3]  vfs_write+0xa1b/0x10b0
[ 1722.362765][    C3]  ? __pfx_lock_acquire.part.0+0x10/0x10
[ 1722.362957][    C3]  ? __pfx_vfs_write+0x10/0x10
[ 1722.363143][    C3]  ? clockevents_program_event+0xf6/0x300
[ 1722.363337][    C3]  ? __fget_light+0x53/0x1e0
[ 1722.363530][    C3]  ? clockevents_program_event+0x1ea/0x300
[ 1722.363765][    C3]  ksys_write+0xf5/0x1e0
[ 1722.363908][    C3]  ? __pfx_ksys_write+0x10/0x10
[ 1722.364108][    C3]  do_syscall_64+0xc1/0x1d0
[ 1722.364335][    C3]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 1722.364571][    C3] RIP: 0033:0x7fe5fd8d9957
[ 1722.364763][    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
[ 1722.365419][    C3] RSP: 002b:00007ffcf88e8338 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 1722.365705][    C3] RAX: ffffffffffffffda RBX: 0000556951b512b0 RCX: 00007fe5fd8d9957
[ 1722.365980][    C3] RDX: 0000000000000001 RSI: 0000556951b512b0 RDI: 0000000000000001
[ 1722.366254][    C3] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000002000
[ 1722.366568][    C3] R10: 0000000000000001 R11: 0000000000000246 R12: 0000556951b3c5e0
[ 1722.366842][    C3] R13: 0000556951b1d2a0 R14: 0000000000000001 R15: 0000556951b3c5e0
[ 1722.367120][    C3]  </TASK>
[ 1722.367264][    C3] handlers:
[ 1722.367404][    C3] [<ffffffffb0320c80>] serial8250_interrupt
[ 1722.368223][    C3] Disabling IRQ #4