[ 1568.437935][ C3] irq 4: nobody cared (try booting with the "irqpoll" option)
[ 1568.438422][ C3] CPU: 3 PID: 7411 Comm: perl Not tainted 6.9.0-rc4-virtme #1
[ 1568.438665][ C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1568.439086][ C3] Call Trace:
[ 1568.439216][ C3]
[ 1568.439311][ C3] dump_stack_lvl+0x82/0xd0
[ 1568.439483][ C3] __report_bad_irq+0x5f/0x180
[ 1568.439646][ C3] note_interrupt+0x6b3/0x860
[ 1568.439808][ C3] handle_irq_event+0x16d/0x1c0
[ 1568.439965][ C3] handle_edge_irq+0x1fa/0xb60
[ 1568.440127][ C3] __common_interrupt+0x7c/0x180
[ 1568.440284][ C3] common_interrupt+0x7e/0x90
[ 1568.440445][ C3]
[ 1568.440528][ C3]
[ 1568.440614][ C3] asm_common_interrupt+0x26/0x40
[ 1568.440786][ C3] RIP: 0010:_raw_spin_unlock_irqrestore+0x43/0x70
[ 1568.440995][ C3] Code: 10 e8 f1 a6 9a fd 48 89 ef e8 29 17 9b 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 65 ed ce 57 <74> 0e 5b 5d c3 cc cc cc cc e8 df 11 be fd eb dc 0f 1f 44 00 00 5b
[ 1568.441542][ C3] RSP: 0018:ffffc9000092fa80 EFLAGS: 00000286
[ 1568.441751][ C3] RAX: 0000000000000002 RBX: 0000000000000200 RCX: 1ffffffff56a9109
[ 1568.441996][ C3] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffa834dab1
[ 1568.442242][ C3] RBP: ffffffffabe291e0 R08: 0000000000000001 R09: fffffbfff56a42b0
[ 1568.442473][ C3] R10: ffffffffab521587 R11: 0000000000000000 R12: 0000000000000c7e
[ 1568.442705][ C3] R13: ffffffffabe292e8 R14: ffffffffabe291e0 R15: ffff888004250000
[ 1568.442959][ C3] ? _raw_spin_unlock_irqrestore+0x51/0x70
[ 1568.443160][ C3] uart_write+0x224/0x450
[ 1568.443286][ C3] process_output_block+0x13e/0x790
[ 1568.443450][ C3] ? lockdep_hardirqs_on_prepare.part.0+0x1af/0x370
[ 1568.443655][ C3] n_tty_write+0x412/0x7a0
[ 1568.443817][ C3] ? __pfx_n_tty_write+0x10/0x10
[ 1568.443977][ C3] ? trace_lock_acquire+0x135/0x1c0
[ 1568.444145][ C3] ? __pfx_woken_wake_function+0x10/0x10
[ 1568.444304][ C3] ? iterate_tty_write+0x95/0x540
[ 1568.444466][ C3] ? lock_acquire+0x32/0xc0
[ 1568.444624][ C3] ? iterate_tty_write+0x95/0x540
[ 1568.444788][ C3] iterate_tty_write+0x228/0x540
[ 1568.444949][ C3] ? tty_ldisc_ref_wait+0x28/0x80
[ 1568.445113][ C3] file_tty_write.constprop.0+0x1db/0x370
[ 1568.445266][ C3] ? find_held_lock+0x2c/0x110
[ 1568.445423][ C3] vfs_write+0x9e5/0x10a0
[ 1568.445551][ C3] ? __pfx___lock_release+0x10/0x10
[ 1568.445706][ C3] ? trace_lock_acquire+0x135/0x1c0
[ 1568.445857][ C3] ? lock_acquire+0x32/0xc0
[ 1568.446016][ C3] ? __pfx_vfs_write+0x10/0x10
[ 1568.446178][ C3] ? __might_fault+0x11b/0x170
[ 1568.446345][ C3] ? __rseq_handle_notify_resume+0x354/0x4e0
[ 1568.446539][ C3] ? __fget_light+0x53/0x1e0
[ 1568.446706][ C3] ksys_write+0xf5/0x1e0
[ 1568.446830][ C3] ? __pfx_ksys_write+0x10/0x10
[ 1568.447004][ C3] do_syscall_64+0xc3/0x1d0
[ 1568.447166][ C3] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 1568.447361][ C3] RIP: 0033:0x7f7a479cc957
[ 1568.447520][ 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
[ 1568.448053][ C3] RSP: 002b:00007ffc4e5ee038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 1568.448305][ C3] RAX: ffffffffffffffda RBX: 000055ad319e31d0 RCX: 00007f7a479cc957
[ 1568.448542][ C3] RDX: 0000000000000001 RSI: 000055ad319e31d0 RDI: 0000000000000001
[ 1568.448835][ C3] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000002000
[ 1568.449064][ C3] R10: 0000000000000001 R11: 0000000000000246 R12: 000055ad319cf5c0
[ 1568.449292][ C3] R13: 000055ad319b02a0 R14: 0000000000000001 R15: 000055ad319cf5c0
[ 1568.449529][ C3]
[ 1568.449652][ C3] handlers:
[ 1568.449774][ C3] [] serial8250_interrupt
[ 1568.450103][ C3] Disabling IRQ #4
WAIT TIMEOUT stderr
Ctrl-C stderr
Ctrl-C stderr
WAIT TIMEOUT stderr