[ 902.601807][ C3] irq 4: nobody cared (try booting with the "irqpoll" option)
[ 902.602210][ C3] CPU: 3 PID: 8807 Comm: perl Not tainted 6.8.0-rc7-virtme #1
[ 902.602452][ C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 902.602801][ C3] Call Trace:
[ 902.602920][ C3]
[ 902.603005][ C3] dump_stack_lvl+0x64/0xb0
[ 902.603189][ C3] __report_bad_irq+0x5f/0x180
[ 902.603361][ C3] note_interrupt+0x6b3/0x860
[ 902.603525][ C3] handle_irq_event+0x16d/0x1c0
[ 902.603684][ C3] handle_edge_irq+0x1fa/0xb60
[ 902.603863][ C3] __common_interrupt+0x7c/0x180
[ 902.604027][ C3] common_interrupt+0x7e/0x90
[ 902.604207][ C3]
[ 902.604294][ C3]
[ 902.604374][ C3] asm_common_interrupt+0x26/0x40
[ 902.604533][ C3] RIP: 0010:_raw_spin_unlock_irqrestore+0x43/0x70
[ 902.604735][ C3] Code: 10 e8 c1 61 a3 fd 48 89 ef e8 e9 cd a3 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 35 f3 98 46 <74> 0e 5b 5d c3 cc cc cc cc e8 8f 8a c5 fd eb dc 0f 1f 44 00 00 5b
[ 902.605281][ C3] RSP: 0018:ffffc900009ffa88 EFLAGS: 00000286
[ 902.605486][ C3] RAX: 0000000000000006 RBX: 0000000000000200 RCX: 1ffffffff791991c
[ 902.605725][ C3] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffb96abfa1
[ 902.605960][ C3] RBP: ffffffffbd1aabe0 R08: 0000000000000001 R09: fffffbfff7914a78
[ 902.606189][ C3] R10: ffffffffbc8a53c7 R11: 0000000000000000 R12: 0000000000000a10
[ 902.606423][ C3] R13: ffffffffbd1aace8 R14: ffffffffbd1aabe0 R15: ffff888004a40000
[ 902.606666][ C3] ? _raw_spin_unlock_irqrestore+0x51/0x70
[ 902.606873][ C3] uart_write+0x220/0x440
[ 902.607004][ C3] process_output_block+0x13e/0x790
[ 902.607160][ C3] ? lockdep_hardirqs_on_prepare.part.0+0x1b1/0x370
[ 902.607354][ C3] n_tty_write+0x414/0x7a0
[ 902.607517][ C3] ? __pfx_n_tty_write+0x10/0x10
[ 902.607679][ C3] ? __pfx_woken_wake_function+0x10/0x10
[ 902.607845][ C3] ? lock_acquire+0x1c1/0x220
[ 902.607998][ C3] ? iterate_tty_write+0x95/0x540
[ 902.608159][ C3] iterate_tty_write+0x229/0x540
[ 902.608322][ C3] ? tty_ldisc_ref_wait+0x28/0x80
[ 902.608481][ C3] file_tty_write.constprop.0+0x1db/0x370
[ 902.608646][ C3] vfs_write+0x9e9/0x10a0
[ 902.608769][ C3] ? lock_acquire+0x1c1/0x220
[ 902.608930][ C3] ? __pfx_vfs_write+0x10/0x10
[ 902.609089][ C3] ? __might_fault+0xc6/0x180
[ 902.609260][ C3] ? __fget_light+0x54/0x1e0
[ 902.609425][ C3] ksys_write+0xf5/0x1e0
[ 902.609542][ C3] ? __pfx_ksys_write+0x10/0x10
[ 902.609709][ C3] do_syscall_64+0xc9/0x1e0
[ 902.609869][ C3] entry_SYSCALL_64_after_hwframe+0x6f/0x77
[ 902.610063][ C3] RIP: 0033:0x7f84e1f78957
[ 902.610223][ 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
[ 902.610777][ C3] RSP: 002b:00007ffd0ed3bbc8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 902.611015][ C3] RAX: ffffffffffffffda RBX: 0000563e0b62f070 RCX: 00007f84e1f78957
[ 902.611253][ C3] RDX: 0000000000000001 RSI: 0000563e0b62f070 RDI: 0000000000000001
[ 902.611479][ C3] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000002000
[ 902.611713][ C3] R10: 0000000000000001 R11: 0000000000000246 R12: 0000563e0b61b590
[ 902.611937][ C3] R13: 0000563e0b5fc2a0 R14: 0000000000000001 R15: 0000563e0b61b590
[ 902.612174][ C3]
[ 902.612295][ C3] handlers:
[ 902.612419][ C3] [] serial8250_interrupt
[ 902.612790][ C3] Disabling IRQ #4
WAIT TIMEOUT stderr
Ctrl-C stderr
Ctrl-C stderr
WAIT TIMEOUT stderr