[ 327.121852] irq 4: nobody cared (try booting with the "irqpoll" option) [ 327.121977] CPU: 3 PID: 3210 Comm: perl Not tainted 6.10.0-rc4-virtme #1 [ 327.122063] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 327.122154] Call Trace: [ 327.122180] [ 327.122212] dump_stack_lvl+0x55/0x70 [ 327.122259] __report_bad_irq+0x2b/0xc0 [ 327.122301] note_interrupt+0x2a7/0x2f0 [ 327.122335] handle_irq_event+0x72/0x80 [ 327.122369] handle_edge_irq+0x8b/0x230 [ 327.122403] __common_interrupt+0x3c/0xb0 [ 327.122439] common_interrupt+0x80/0x90 [ 327.122480] [ 327.122502] [ 327.122526] asm_common_interrupt+0x26/0x40 [ 327.122564] RIP: 0010:_raw_spin_unlock_irqrestore+0x1c/0x30 [ 327.122614] 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 5c 55 0b 64 <74> 05 c3 cc cc cc cc 0f 1f 44 00 00 c3 cc cc cc cc 0f 1f 00 90 90 [ 327.122748] RSP: 0018:ffffbb77c0633d60 EFLAGS: 00000286 [ 327.122796] RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000017 [ 327.122859] RDX: ffffffff9bb7099d RSI: 0000000000000286 RDI: ffffffff9d4e7500 [ 327.122922] RBP: ffff94d641f1c000 R08: 0000004c3b48240e R09: 0000000000000001 [ 327.122986] R10: ffff94d64128c9f8 R11: 0000000000000000 R12: ffffffff9d4e7500 [ 327.123055] R13: 0000000000000286 R14: ffff94d64128f800 R15: ffff94d64128c800 [ 327.123118] ? rpm_suspend+0x1ad/0x5e0 [ 327.123164] uart_write+0x89/0x150 [ 327.123204] n_tty_write+0x1a6/0x520 [ 327.123238] ? __pfx_woken_wake_function+0x10/0x10 [ 327.123281] file_tty_write.constprop.0+0x14d/0x330 [ 327.123341] vfs_write+0x32f/0x460 [ 327.123379] ksys_write+0x63/0xe0 [ 327.123412] do_syscall_64+0x9e/0x1a0 [ 327.123449] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 327.123496] RIP: 0033:0x7f1dee5d2957 [ 327.123529] 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 [ 327.123663] RSP: 002b:00007ffe054e9c48 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 327.123723] RAX: ffffffffffffffda RBX: 00005642023b8110 RCX: 00007f1dee5d2957 [ 327.123782] RDX: 0000000000000001 RSI: 00005642023b8110 RDI: 0000000000000001 [ 327.123844] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000002000 [ 327.123905] R10: 0000000000000001 R11: 0000000000000246 R12: 00005642023a4560 [ 327.123964] R13: 00005642023852a0 R14: 0000000000000001 R15: 00005642023a4560 [ 327.124027] [ 327.124050] handlers: [ 327.124074] [<00000000762e6b01>] serial8250_interrupt [ 327.124125] Disabling IRQ #4