[ 1203.515227][ T8409] Mirror/redirect action on [ 1250.623165][ C3] irq 4: nobody cared (try booting with the "irqpoll" option) [ 1250.623542][ C3] CPU: 3 UID: 0 PID: 8262 Comm: perl Not tainted 6.11.0-virtme #1 [ 1250.623784][ C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 1250.624148][ C3] Call Trace: [ 1250.624271][ C3] [ 1250.624357][ C3] dump_stack_lvl+0x82/0xd0 [ 1250.624526][ C3] __report_bad_irq+0x5f/0x180 [ 1250.624684][ C3] note_interrupt+0x6b3/0x860 [ 1250.624843][ C3] handle_irq_event+0x16d/0x1c0 [ 1250.625001][ C3] handle_edge_irq+0x1fa/0xb60 [ 1250.625161][ C3] __common_interrupt+0x82/0x170 [ 1250.625325][ C3] common_interrupt+0x7e/0x90 [ 1250.625481][ C3] [ 1250.625576][ C3] [ 1250.625658][ C3] asm_common_interrupt+0x26/0x40 [ 1250.625819][ C3] RIP: 0010:_raw_spin_unlock_irqrestore+0x43/0x70 [ 1250.626020][ C3] Code: 10 e8 f1 e9 8c fd 48 89 ef e8 99 5a 8d 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 15 16 01 62 <74> 0e 5b 5d c3 cc cc cc cc e8 6f 13 b1 fd eb dc 0f 1f 44 00 00 5b [ 1250.626563][ C3] RSP: 0018:ffffc9000710fab8 EFLAGS: 00000286 [ 1250.626766][ C3] RAX: 0000000000000002 RBX: 0000000000000200 RCX: 1ffffffff4278220 [ 1250.626996][ C3] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff9e02b081 [ 1250.627243][ C3] RBP: ffffffffa1c822a0 R08: 0000000000000001 R09: fffffbfff4273318 [ 1250.627479][ C3] R10: ffffffffa13998c7 R11: 0000000000000000 R12: ffffffffa1c823a8 [ 1250.627713][ C3] R13: ffff888005f1e400 R14: ffffffffa1c822a0 R15: 0000000000000286 [ 1250.627964][ C3] ? _raw_spin_unlock_irqrestore+0x51/0x70 [ 1250.628166][ C3] uart_write+0x13e/0x320 [ 1250.628288][ C3] process_output_block+0x13e/0x790 [ 1250.628468][ C3] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 1250.628672][ C3] n_tty_write+0x412/0x7a0 [ 1250.628832][ C3] ? __pfx_n_tty_write+0x10/0x10 [ 1250.628992][ C3] ? trace_lock_acquire+0x14d/0x1f0 [ 1250.629151][ C3] ? __pfx_woken_wake_function+0x10/0x10 [ 1250.629322][ C3] ? iterate_tty_write+0x95/0x540 [ 1250.629507][ C3] ? lock_acquire+0x32/0xc0 [ 1250.629662][ C3] ? iterate_tty_write+0x95/0x540 [ 1250.629823][ C3] iterate_tty_write+0x228/0x540 [ 1250.629993][ C3] ? tty_ldisc_ref_wait+0x28/0x80 [ 1250.630155][ C3] file_tty_write.constprop.0+0x1db/0x370 [ 1250.630318][ C3] vfs_write+0xa1b/0x10b0 [ 1250.630439][ C3] ? __pfx___lock_release+0x10/0x10 [ 1250.630593][ C3] ? trace_lock_acquire+0x14d/0x1f0 [ 1250.630753][ C3] ? __might_fault+0xc3/0x170 [ 1250.630911][ C3] ? lock_acquire+0x32/0xc0 [ 1250.631068][ C3] ? __pfx_vfs_write+0x10/0x10 [ 1250.631228][ C3] ? __might_fault+0x11b/0x170 [ 1250.631411][ C3] ? __rseq_handle_notify_resume+0x354/0x4e0 [ 1250.631611][ C3] ? __fget_light+0x53/0x1e0 [ 1250.631777][ C3] ksys_write+0xf5/0x1e0 [ 1250.631897][ C3] ? __pfx_ksys_write+0x10/0x10 [ 1250.632070][ C3] do_syscall_64+0xc1/0x1d0 [ 1250.632233][ C3] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 1250.632431][ C3] RIP: 0033:0x7faa556f1957 [ 1250.632594][ 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 [ 1250.633158][ C3] RSP: 002b:00007ffdf3cd1ca8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 1250.633413][ C3] RAX: ffffffffffffffda RBX: 000055642e42c2b0 RCX: 00007faa556f1957 [ 1250.633674][ C3] RDX: 0000000000000001 RSI: 000055642e42c2b0 RDI: 0000000000000001 [ 1250.633933][ C3] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000002000 [ 1250.634185][ C3] R10: 0000000000000001 R11: 0000000000000246 R12: 000055642e4175e0 [ 1250.634443][ C3] R13: 000055642e3f82a0 R14: 0000000000000001 R15: 000055642e4175e0 [ 1250.634706][ C3] [ 1250.634829][ C3] handlers: [ 1250.634956][ C3] [] serial8250_interrupt [ 1250.635316][ C3] Disabling IRQ #4