[ 840.287265][ T4216] tc (4216) used greatest stack depth: 23128 bytes left
[ 860.927883][ C3] irq 4: nobody cared (try booting with the "irqpoll" option)
[ 860.928255][ C3] CPU: 3 PID: 3997 Comm: perl Not tainted 6.8.0-rc7-virtme #1
[ 860.928492][ C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 860.928850][ C3] Call Trace:
[ 860.928977][ C3]
[ 860.929063][ C3] dump_stack_lvl+0x64/0xb0
[ 860.929232][ C3] __report_bad_irq+0x5f/0x180
[ 860.929400][ C3] note_interrupt+0x6b3/0x860
[ 860.929568][ C3] handle_irq_event+0x16d/0x1c0
[ 860.929735][ C3] handle_edge_irq+0x1fa/0xb60
[ 860.929904][ C3] __common_interrupt+0x7c/0x180
[ 860.930070][ C3] common_interrupt+0x7e/0x90
[ 860.930227][ C3]
[ 860.930308][ C3]
[ 860.930396][ C3] asm_common_interrupt+0x26/0x40
[ 860.930549][ C3] RIP: 0010:_raw_spin_unlock_irqrestore+0x43/0x70
[ 860.930756][ 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 4b <74> 0e 5b 5d c3 cc cc cc cc e8 8f 8a c5 fd eb dc 0f 1f 44 00 00 5b
[ 860.931311][ C3] RSP: 0018:ffffc90003b1fa88 EFLAGS: 00000286
[ 860.931523][ C3] RAX: 0000000000000002 RBX: 0000000000000200 RCX: 1ffffffff6f198d1
[ 860.931771][ C3] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffb46abfa1
[ 860.932001][ C3] RBP: ffffffffb81aabe0 R08: 0000000000000001 R09: fffffbfff6f14a78
[ 860.932228][ C3] R10: ffffffffb78a53c7 R11: 0000000000000000 R12: 0000000000000b0b
[ 860.932460][ C3] R13: ffffffffb81aace8 R14: ffffffffb81aabe0 R15: ffff888002360000
[ 860.932705][ C3] ? _raw_spin_unlock_irqrestore+0x51/0x70
[ 860.932906][ C3] uart_write+0x220/0x440
[ 860.933030][ C3] process_output_block+0x13e/0x790
[ 860.933196][ C3] ? lockdep_hardirqs_on_prepare.part.0+0x1b1/0x370
[ 860.933396][ C3] n_tty_write+0x414/0x7a0
[ 860.933559][ C3] ? __pfx_n_tty_write+0x10/0x10
[ 860.933715][ C3] ? __pfx_woken_wake_function+0x10/0x10
[ 860.933874][ C3] ? lock_acquire+0x1c1/0x220
[ 860.934036][ C3] ? iterate_tty_write+0x95/0x540
[ 860.934206][ C3] iterate_tty_write+0x229/0x540
[ 860.934363][ C3] ? tty_ldisc_ref_wait+0x28/0x80
[ 860.934526][ C3] file_tty_write.constprop.0+0x1db/0x370
[ 860.934683][ C3] vfs_write+0x9e9/0x10a0
[ 860.934800][ C3] ? lock_acquire+0x1c1/0x220
[ 860.934956][ C3] ? __pfx_vfs_write+0x10/0x10
[ 860.935113][ C3] ? __might_fault+0xc6/0x180
[ 860.935278][ C3] ? __fget_light+0x54/0x1e0
[ 860.935449][ C3] ksys_write+0xf5/0x1e0
[ 860.935572][ C3] ? __pfx_ksys_write+0x10/0x10
[ 860.935737][ C3] do_syscall_64+0xc9/0x1e0
[ 860.935896][ C3] entry_SYSCALL_64_after_hwframe+0x6f/0x77
[ 860.936097][ C3] RIP: 0033:0x7fec145cb957
[ 860.936276][ 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
[ 860.936828][ C3] RSP: 002b:00007ffce0922638 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 860.937075][ C3] RAX: ffffffffffffffda RBX: 00005615436ea1b0 RCX: 00007fec145cb957
[ 860.937320][ C3] RDX: 0000000000000001 RSI: 00005615436ea1b0 RDI: 0000000000000001
[ 860.937547][ C3] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000002000
[ 860.937772][ C3] R10: 0000000000000001 R11: 0000000000000246 R12: 00005615436d6590
[ 860.938003][ C3] R13: 00005615436b72a0 R14: 0000000000000001 R15: 00005615436d6590
[ 860.938242][ C3]
[ 860.938363][ C3] handlers:
[ 860.938478][ C3] [] serial8250_interrupt
[ 860.939054][ C3] Disabling IRQ #4
WAIT TIMEOUT stderr
Ctrl-C stderr
Ctrl-C stderr
WAIT TIMEOUT stderr