[ 1661.017986][ C3] irq 4: nobody cared (try booting with the "irqpoll" option) [ 1661.018371][ C3] CPU: 3 UID: 0 PID: 7858 Comm: perl Not tainted 6.11.0-rc1-virtme #1 [ 1661.018611][ C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 1661.018971][ C3] Call Trace: [ 1661.019105][ C3] [ 1661.019192][ C3] dump_stack_lvl+0x82/0xd0 [ 1661.019376][ C3] __report_bad_irq+0x5f/0x180 [ 1661.019548][ C3] note_interrupt+0x6b3/0x860 [ 1661.019710][ C3] handle_irq_event+0x16d/0x1c0 [ 1661.019868][ C3] handle_edge_irq+0x1fa/0xb60 [ 1661.020036][ C3] __common_interrupt+0x82/0x170 [ 1661.020197][ C3] common_interrupt+0x7e/0x90 [ 1661.020369][ C3] [ 1661.020455][ C3] [ 1661.020541][ C3] asm_common_interrupt+0x26/0x40 [ 1661.020703][ C3] RIP: 0010:_raw_spin_unlock_irqrestore+0x43/0x70 [ 1661.020924][ C3] Code: 10 e8 c1 2a 8e fd 48 89 ef e8 69 9b 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 65 69 42 72 <74> 0e 5b 5d c3 cc cc cc cc e8 df 52 b2 fd eb dc 0f 1f 44 00 00 5b [ 1661.021475][ C3] RSP: 0018:ffffc90001b0fab8 EFLAGS: 00000286 [ 1661.021673][ C3] RAX: 0000000000000002 RBX: 0000000000000200 RCX: 1ffffffff21f6c5b [ 1661.021907][ C3] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8dc15f31 [ 1661.022160][ C3] RBP: ffffffff91877320 R08: 0000000000000001 R09: fffffbfff21f1d08 [ 1661.022398][ C3] R10: ffffffff90f8e847 R11: 0000000000000000 R12: ffffffff91877428 [ 1661.022651][ C3] R13: ffff88800436b400 R14: ffffffff91877320 R15: 0000000000000282 [ 1661.022894][ C3] ? _raw_spin_unlock_irqrestore+0x51/0x70 [ 1661.023101][ C3] uart_write+0x13e/0x320 [ 1661.023228][ C3] process_output_block+0x13e/0x790 [ 1661.023391][ C3] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 1661.023598][ C3] n_tty_write+0x412/0x7a0 [ 1661.023762][ C3] ? __pfx_n_tty_write+0x10/0x10 [ 1661.023933][ C3] ? trace_lock_acquire+0x14d/0x1f0 [ 1661.024095][ C3] ? __pfx_woken_wake_function+0x10/0x10 [ 1661.024260][ C3] ? iterate_tty_write+0x95/0x540 [ 1661.024430][ C3] ? lock_acquire+0x32/0xc0 [ 1661.024592][ C3] ? iterate_tty_write+0x95/0x540 [ 1661.024761][ C3] iterate_tty_write+0x228/0x540 [ 1661.024919][ C3] ? tty_ldisc_ref_wait+0x28/0x80 [ 1661.025085][ C3] file_tty_write.constprop.0+0x1db/0x370 [ 1661.025247][ C3] vfs_write+0xa1b/0x10b0 [ 1661.025371][ C3] ? __pfx___lock_release+0x10/0x10 [ 1661.025522][ C3] ? trace_lock_acquire+0x14d/0x1f0 [ 1661.025683][ C3] ? __might_fault+0xc3/0x170 [ 1661.025845][ C3] ? lock_acquire+0x32/0xc0 [ 1661.026004][ C3] ? __pfx_vfs_write+0x10/0x10 [ 1661.026172][ C3] ? __might_fault+0x11b/0x170 [ 1661.026336][ C3] ? __rseq_handle_notify_resume+0x354/0x4e0 [ 1661.026545][ C3] ? __fget_light+0x53/0x1e0 [ 1661.026750][ C3] ksys_write+0xf5/0x1e0 [ 1661.026872][ C3] ? __pfx_ksys_write+0x10/0x10 [ 1661.027043][ C3] do_syscall_64+0xc1/0x1d0 [ 1661.027206][ C3] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 1661.027393][ C3] RIP: 0033:0x7f64fa2af957 [ 1661.027569][ 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 [ 1661.028116][ C3] RSP: 002b:00007ffed332eda8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 1661.028358][ C3] RAX: ffffffffffffffda RBX: 000055e5c31b8310 RCX: 00007f64fa2af957 [ 1661.028588][ C3] RDX: 0000000000000001 RSI: 000055e5c31b8310 RDI: 0000000000000001 [ 1661.028825][ C3] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000002000 [ 1661.029048][ C3] R10: 0000000000000001 R11: 0000000000000246 R12: 000055e5c31a45c0 [ 1661.029280][ C3] R13: 000055e5c31852a0 R14: 0000000000000001 R15: 000055e5c31a45c0 [ 1661.029528][ C3] [ 1661.029645][ C3] handlers: [ 1661.029774][ C3] [] serial8250_interrupt [ 1661.030156][ C3] Disabling IRQ #4