[ 1019.968808][ C3] irq 4: nobody cared (try booting with the "irqpoll" option) [ 1019.969261][ C3] CPU: 3 UID: 0 PID: 3897 Comm: perl Not tainted 6.11.0-rc1-virtme #1 [ 1019.969536][ C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 1019.969920][ C3] Call Trace: [ 1019.970055][ C3] [ 1019.970146][ C3] dump_stack_lvl+0x82/0xd0 [ 1019.970348][ C3] __report_bad_irq+0x5f/0x180 [ 1019.970527][ C3] note_interrupt+0x6b3/0x860 [ 1019.970702][ C3] handle_irq_event+0x16d/0x1c0 [ 1019.970890][ C3] handle_edge_irq+0x1fa/0xb60 [ 1019.971076][ C3] __common_interrupt+0x82/0x170 [ 1019.971255][ C3] common_interrupt+0x7e/0x90 [ 1019.971431][ C3] [ 1019.971521][ C3] [ 1019.971615][ C3] asm_common_interrupt+0x26/0x40 [ 1019.971798][ C3] RIP: 0010:_raw_spin_unlock_irqrestore+0x43/0x70 [ 1019.972051][ C3] Code: 10 e8 b1 1a 8e fd 48 89 ef e8 59 8b 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 55 59 82 59 <74> 0e 5b 5d c3 cc cc cc cc e8 cf 42 b2 fd eb dc 0f 1f 44 00 00 5b [ 1019.972664][ C3] RSP: 0018:ffffc9000330fab8 EFLAGS: 00000286 [ 1019.972925][ C3] RAX: 0000000000000002 RBX: 0000000000000200 RCX: 1ffffffff5377229 [ 1019.973199][ C3] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffa6816f41 [ 1019.973458][ C3] RBP: ffffffffaa47a320 R08: 0000000000000001 R09: fffffbfff5372308 [ 1019.973714][ C3] R10: ffffffffa9b91847 R11: 0000000000000000 R12: ffffffffaa47a428 [ 1019.973967][ C3] R13: ffff88800594cc00 R14: ffffffffaa47a320 R15: 0000000000000282 [ 1019.974244][ C3] ? _raw_spin_unlock_irqrestore+0x51/0x70 [ 1019.974472][ C3] uart_write+0x13e/0x320 [ 1019.974621][ C3] process_output_block+0x13e/0x790 [ 1019.974804][ C3] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 1019.975031][ C3] n_tty_write+0x412/0x7a0 [ 1019.975210][ C3] ? __pfx_n_tty_write+0x10/0x10 [ 1019.975378][ C3] ? trace_lock_acquire+0x14d/0x1f0 [ 1019.975557][ C3] ? __pfx_woken_wake_function+0x10/0x10 [ 1019.975738][ C3] ? iterate_tty_write+0x95/0x540 [ 1019.975905][ C3] ? lock_acquire+0x32/0xc0 [ 1019.976076][ C3] ? iterate_tty_write+0x95/0x540 [ 1019.976260][ C3] iterate_tty_write+0x228/0x540 [ 1019.976435][ C3] ? tty_ldisc_ref_wait+0x28/0x80 [ 1019.976609][ C3] file_tty_write.constprop.0+0x1db/0x370 [ 1019.976782][ C3] vfs_write+0xa1b/0x10b0 [ 1019.976924][ C3] ? __pfx___lock_release+0x10/0x10 [ 1019.977091][ C3] ? trace_lock_acquire+0x14d/0x1f0 [ 1019.977260][ C3] ? __might_fault+0xc3/0x170 [ 1019.977435][ C3] ? lock_acquire+0x32/0xc0 [ 1019.977604][ C3] ? __pfx_vfs_write+0x10/0x10 [ 1019.977778][ C3] ? __might_fault+0x11b/0x170 [ 1019.977955][ C3] ? __rseq_handle_notify_resume+0x354/0x4e0 [ 1019.978175][ C3] ? __fget_light+0x53/0x1e0 [ 1019.978358][ C3] ksys_write+0xf5/0x1e0 [ 1019.978495][ C3] ? __pfx_ksys_write+0x10/0x10 [ 1019.978677][ C3] do_syscall_64+0xc1/0x1d0 [ 1019.978850][ C3] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 1019.979065][ C3] RIP: 0033:0x7f4cf608e957 [ 1019.979249][ 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 [ 1019.979847][ C3] RSP: 002b:00007ffde1576138 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 1019.980110][ C3] RAX: ffffffffffffffda RBX: 0000560a4666c1d0 RCX: 00007f4cf608e957 [ 1019.980365][ C3] RDX: 0000000000000001 RSI: 0000560a4666c1d0 RDI: 0000000000000001 [ 1019.980609][ C3] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000002000 [ 1019.980864][ C3] R10: 0000000000000001 R11: 0000000000000246 R12: 0000560a466585c0 [ 1019.981123][ C3] R13: 0000560a466392a0 R14: 0000000000000001 R15: 0000560a466585c0 [ 1019.981387][ C3] [ 1019.981513][ C3] handlers: [ 1019.981644][ C3] [] serial8250_interrupt [ 1019.982046][ C3] Disabling IRQ #4