[ 1524.632640][ C3] irq 4: nobody cared (try booting with the "irqpoll" option) [ 1524.633098][ C3] CPU: 3 PID: 10881 Comm: perl Not tainted 6.9.0-rc3-virtme #1 [ 1524.633349][ C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 1524.633697][ C3] Call Trace: [ 1524.633825][ C3] [ 1524.633915][ C3] dump_stack_lvl+0x82/0xd0 [ 1524.634089][ C3] __report_bad_irq+0x5f/0x180 [ 1524.634248][ C3] note_interrupt+0x6b3/0x860 [ 1524.634413][ C3] handle_irq_event+0x16d/0x1c0 [ 1524.634570][ C3] handle_edge_irq+0x1fa/0xb60 [ 1524.634731][ C3] __common_interrupt+0x7c/0x180 [ 1524.634887][ C3] common_interrupt+0x7e/0x90 [ 1524.635049][ C3] [ 1524.635138][ C3] [ 1524.635219][ C3] asm_common_interrupt+0x26/0x40 [ 1524.635377][ C3] RIP: 0010:_raw_spin_unlock_irqrestore+0x43/0x70 [ 1524.635589][ C3] Code: 10 e8 71 d8 9a fd 48 89 ef e8 a9 48 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 95 1d 2f 54 <74> 0e 5b 5d c3 cc cc cc cc e8 6f 45 be fd eb dc 0f 1f 44 00 00 5b [ 1524.636143][ C3] RSP: 0018:ffffc9000274fa80 EFLAGS: 00000286 [ 1524.636343][ C3] RAX: 0000000000000006 RBX: 0000000000000200 RCX: 1ffffffff5de90f0 [ 1524.636586][ C3] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffabd4aa81 [ 1524.636816][ C3] RBP: ffffffffaf8291a0 R08: 0000000000000001 R09: fffffbfff5de42b0 [ 1524.637056][ C3] R10: ffffffffaef21587 R11: 0000000000000000 R12: 00000000000009e1 [ 1524.637287][ C3] R13: ffffffffaf8292a8 R14: ffffffffaf8291a0 R15: ffff888002470000 [ 1524.637526][ C3] ? _raw_spin_unlock_irqrestore+0x51/0x70 [ 1524.637729][ C3] uart_write+0x224/0x450 [ 1524.637854][ C3] process_output_block+0x13e/0x790 [ 1524.638029][ C3] ? lockdep_hardirqs_on_prepare.part.0+0x1af/0x370 [ 1524.638226][ C3] n_tty_write+0x412/0x7a0 [ 1524.638386][ C3] ? __pfx_n_tty_write+0x10/0x10 [ 1524.638543][ C3] ? trace_lock_acquire+0x135/0x1c0 [ 1524.638703][ C3] ? __pfx_woken_wake_function+0x10/0x10 [ 1524.638868][ C3] ? iterate_tty_write+0x95/0x540 [ 1524.639020][ C3] ? lock_acquire+0x32/0xc0 [ 1524.639178][ C3] ? iterate_tty_write+0x95/0x540 [ 1524.639336][ C3] iterate_tty_write+0x228/0x540 [ 1524.639495][ C3] ? tty_ldisc_ref_wait+0x28/0x80 [ 1524.639651][ C3] file_tty_write.constprop.0+0x1db/0x370 [ 1524.639812][ C3] vfs_write+0x9e5/0x10a0 [ 1524.639932][ C3] ? __pfx___lock_release+0x10/0x10 [ 1524.640122][ C3] ? trace_lock_acquire+0x135/0x1c0 [ 1524.640295][ C3] ? lock_acquire+0x32/0xc0 [ 1524.640458][ C3] ? __pfx_vfs_write+0x10/0x10 [ 1524.640623][ C3] ? __might_fault+0x11b/0x170 [ 1524.640796][ C3] ? __rseq_handle_notify_resume+0x354/0x4e0 [ 1524.641007][ C3] ? __fget_light+0x53/0x1e0 [ 1524.641175][ C3] ksys_write+0xf5/0x1e0 [ 1524.641298][ C3] ? __pfx_ksys_write+0x10/0x10 [ 1524.641466][ C3] do_syscall_64+0xc3/0x1d0 [ 1524.641624][ C3] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 1524.641818][ C3] RIP: 0033:0x7f95f4715957 [ 1524.641981][ 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 [ 1524.642510][ C3] RSP: 002b:00007ffcc9a41528 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 1524.642750][ C3] RAX: ffffffffffffffda RBX: 0000556aad8f31b0 RCX: 00007f95f4715957 [ 1524.642987][ C3] RDX: 0000000000000001 RSI: 0000556aad8f31b0 RDI: 0000000000000001 [ 1524.643223][ C3] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000002000 [ 1524.643450][ C3] R10: 0000000000000001 R11: 0000000000000246 R12: 0000556aad8df590 [ 1524.643694][ C3] R13: 0000556aad8c02a0 R14: 0000000000000001 R15: 0000556aad8df590 [ 1524.643937][ C3] [ 1524.644052][ C3] handlers: [ 1524.644168][ C3] [] serial8250_interrupt [ 1524.644505][ C3] Disabling IRQ #4 WAIT TIMEOUT stderr Ctrl-C stderr Ctrl-C stderr WAIT TIMEOUT stderr