[ 1235.170384][ T6276] Mirror/redirect action on [ 1259.224171][ C3] irq 4: nobody cared (try booting with the "irqpoll" option) [ 1259.224610][ C3] CPU: 3 UID: 0 PID: 6125 Comm: perl Not tainted 6.12.0-rc5-virtme #1 [ 1259.224890][ C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 1259.225290][ C3] Call Trace: [ 1259.225459][ C3] <IRQ> [ 1259.225559][ C3] dump_stack_lvl+0x82/0xd0 [ 1259.225789][ C3] __report_bad_irq+0x5f/0x180 [ 1259.225982][ C3] note_interrupt+0x6b3/0x860 [ 1259.226172][ C3] handle_irq_event+0x16d/0x1c0 [ 1259.226362][ C3] handle_edge_irq+0x1fa/0xb60 [ 1259.226560][ C3] __common_interrupt+0x82/0x170 [ 1259.226760][ C3] common_interrupt+0x81/0xa0 [ 1259.226960][ C3] </IRQ> [ 1259.227074][ C3] <TASK> [ 1259.227164][ C3] asm_common_interrupt+0x26/0x40 [ 1259.227369][ C3] RIP: 0010:_raw_spin_unlock_irqrestore+0x43/0x70 [ 1259.227612][ C3] Code: 10 e8 21 fb 86 fd 48 89 ef e8 39 6c 87 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 63 3a 4d <74> 0e 5b 5d c3 cc cc cc cc e8 bf 3e ac fd eb dc 0f 1f 44 00 00 5b [ 1259.228266][ C3] RSP: 0018:ffffc90000f9faa0 EFLAGS: 00000286 [ 1259.228505][ C3] RAX: 0000000000000002 RBX: 0000000000000200 RCX: 1ffffffff6bff2bf [ 1259.228780][ C3] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffb2c965a1 [ 1259.229076][ C3] RBP: ffffffffb68bd460 R08: 0000000000000001 R09: fffffbfff6bfa3d0 [ 1259.229359][ C3] R10: ffffffffb5fd1e87 R11: 0000000000000000 R12: 00000000ffffffff [ 1259.229682][ C3] R13: 0000000000000001 R14: ffffffffb68bd568 R15: 00000000ffffffff [ 1259.229973][ C3] ? _raw_spin_unlock_irqrestore+0x51/0x70 [ 1259.230217][ C3] uart_write+0x220/0x920 [ 1259.230362][ C3] process_output_block+0x13e/0x790 [ 1259.230564][ C3] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 1259.230801][ C3] n_tty_write+0x40c/0x790 [ 1259.230983][ C3] ? __pfx_n_tty_write+0x10/0x10 [ 1259.231160][ C3] ? trace_lock_acquire+0x14d/0x1f0 [ 1259.231338][ C3] ? __pfx_woken_wake_function+0x10/0x10 [ 1259.231542][ C3] ? iterate_tty_write+0x8f/0x540 [ 1259.231738][ C3] ? lock_acquire+0x32/0xc0 [ 1259.231914][ C3] ? iterate_tty_write+0x8f/0x540 [ 1259.232103][ C3] iterate_tty_write+0x222/0x540 [ 1259.232286][ C3] ? tty_ldisc_ref_wait+0x28/0x80 [ 1259.232470][ C3] file_tty_write.constprop.0+0x1cf/0x360 [ 1259.232647][ C3] vfs_write+0xa81/0x11e0 [ 1259.232785][ C3] ? __pfx___lock_release+0x10/0x10 [ 1259.232957][ C3] ? trace_lock_acquire+0x14d/0x1f0 [ 1259.233142][ C3] ? __might_fault+0xc3/0x170 [ 1259.233318][ C3] ? lock_acquire+0x32/0xc0 [ 1259.233512][ C3] ? __pfx_vfs_write+0x10/0x10 [ 1259.233703][ C3] ksys_write+0xf5/0x1e0 [ 1259.233840][ C3] ? __pfx_ksys_write+0x10/0x10 [ 1259.234022][ C3] do_syscall_64+0xc1/0x1d0 [ 1259.234202][ C3] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 1259.234430][ C3] RIP: 0033:0x7fecfbb43957 [ 1259.234624][ 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 [ 1259.235281][ C3] RSP: 002b:00007fff817e28d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 1259.235570][ C3] RAX: ffffffffffffffda RBX: 0000564ad4d022b0 RCX: 00007fecfbb43957 [ 1259.235844][ C3] RDX: 0000000000000001 RSI: 0000564ad4d022b0 RDI: 0000000000000001 [ 1259.236126][ C3] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000002000 [ 1259.236434][ C3] R10: 0000000000000001 R11: 0000000000000246 R12: 0000564ad4ced5e0 [ 1259.236694][ C3] R13: 0000564ad4cce2a0 R14: 0000000000000001 R15: 0000564ad4ced5e0 [ 1259.236968][ C3] </TASK> [ 1259.237098][ C3] handlers: [ 1259.237231][ C3] [<ffffffffb15705f0>] serial8250_interrupt [ 1259.237634][ C3] Disabling IRQ #4