[ 690.045441] irq 4: nobody cared (try booting with the "irqpoll" option) [ 690.045566] CPU: 3 UID: 0 PID: 7618 Comm: perl Not tainted 6.12.0-rc1-virtme #1 [ 690.045616] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 690.045682] Call Trace: [ 690.045708] [ 690.045730] dump_stack_lvl+0x55/0x70 [ 690.045766] __report_bad_irq+0x2b/0xc0 [ 690.045798] note_interrupt+0x2a7/0x2f0 [ 690.045831] handle_irq_event+0x72/0x80 [ 690.045857] handle_edge_irq+0x8b/0x230 [ 690.045882] __common_interrupt+0x3c/0xb0 [ 690.045912] common_interrupt+0x80/0x90 [ 690.045941] [ 690.045963] [ 690.045977] asm_common_interrupt+0x26/0x40 [ 690.046007] RIP: 0010:_raw_spin_unlock_irqrestore+0x1c/0x30 [ 690.046042] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 0f 1f 44 00 00 c6 07 00 f7 c6 00 02 00 00 74 01 fb 65 ff 0d 0c 8b 08 4b <74> 05 c3 cc cc cc cc 0f 1f 44 00 00 c3 cc cc cc cc 0f 1f 00 90 90 [ 690.046141] RSP: 0018:ffffb0af8191bd60 EFLAGS: 00000286 [ 690.046177] RAX: 00000000ffffffff RBX: 0000000000000001 RCX: 0000000000000017 [ 690.046222] RDX: ffffffffb4b9b00d RSI: 0000000000000282 RDI: ffffffffb6509120 [ 690.046269] RBP: ffff902501d2c000 R08: 000000a0b62eb44d R09: 0000000000000001 [ 690.046315] R10: ffff90250292ddf8 R11: 0000000000000000 R12: 0000000000000001 [ 690.046361] R13: ffffffffb6509120 R14: 0000000000000282 R15: ffff90250292dc00 [ 690.046408] ? rpm_suspend+0x1ad/0x5e0 [ 690.046440] uart_write+0xb2/0x270 [ 690.046470] n_tty_write+0x1a3/0x520 [ 690.046499] ? __pfx_woken_wake_function+0x10/0x10 [ 690.046534] file_tty_write.constprop.0+0x147/0x330 [ 690.046579] vfs_write+0x335/0x470 [ 690.046618] ksys_write+0x63/0xe0 [ 690.046652] do_syscall_64+0x9e/0x1a0 [ 690.046690] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 690.046736] RIP: 0033:0x7f0a2be59957 [ 690.046771] 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 [ 690.046911] RSP: 002b:00007fff840d9b98 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 690.046972] RAX: ffffffffffffffda RBX: 0000563a9a5901f0 RCX: 00007f0a2be59957 [ 690.047031] RDX: 0000000000000001 RSI: 0000563a9a5901f0 RDI: 0000000000000001 [ 690.047089] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000002000 [ 690.047147] R10: 0000000000000001 R11: 0000000000000246 R12: 0000563a9a57c580 [ 690.047208] R13: 0000563a9a55d2a0 R14: 0000000000000001 R15: 0000563a9a57c580 [ 690.047268] [ 690.047287] handlers: [ 690.047307] [<00000000541f3da2>] serial8250_interrupt [ 690.047355] Disabling IRQ #4