[ 689.530353] irq 4: nobody cared (try booting with the "irqpoll" option) [ 689.530476] CPU: 3 UID: 0 PID: 16394 Comm: perl Not tainted 6.12.0-rc4-virtme #1 [ 689.530532] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 689.530620] Call Trace: [ 689.530647] [ 689.530671] dump_stack_lvl+0x55/0x70 [ 689.530710] __report_bad_irq+0x2b/0xc0 [ 689.530745] note_interrupt+0x2a7/0x2f0 [ 689.530776] handle_irq_event+0x72/0x80 [ 689.530805] handle_edge_irq+0x8b/0x230 [ 689.530845] __common_interrupt+0x3c/0xb0 [ 689.530878] common_interrupt+0x80/0x90 [ 689.530917] [ 689.530938] [ 689.530960] asm_common_interrupt+0x26/0x40 [ 689.530992] RIP: 0010:_raw_spin_unlock_irqrestore+0x1c/0x30 [ 689.531033] 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 7c 5a a8 65 <74> 05 c3 cc cc cc cc 0f 1f 44 00 00 c3 cc cc cc cc 0f 1f 00 90 90 [ 689.531156] RSP: 0018:ffffb48ac02efd60 EFLAGS: 00000286 [ 689.531198] RAX: 00000000ffffffff RBX: 0000000000000001 RCX: 0000000000000017 [ 689.531250] RDX: ffffffff9a19ba1d RSI: 0000000000000282 RDI: ffffffff9bb0c120 [ 689.531323] RBP: ffff90b081f90000 R08: 000000a09e80dd2c R09: 0000000000000001 [ 689.531375] R10: ffff90b081d969f8 R11: 0000000000000000 R12: 0000000000000001 [ 689.531428] R13: ffffffff9bb0c120 R14: 0000000000000282 R15: ffff90b081d96800 [ 689.531480] ? rpm_suspend+0x1ad/0x5e0 [ 689.531518] uart_write+0xb2/0x270 [ 689.531552] n_tty_write+0x1a3/0x520 [ 689.531585] ? __pfx_woken_wake_function+0x10/0x10 [ 689.531623] file_tty_write.constprop.0+0x147/0x330 [ 689.531659] vfs_write+0x335/0x470 [ 689.531694] ksys_write+0x63/0xe0 [ 689.531725] do_syscall_64+0x9e/0x1a0 [ 689.531761] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 689.531800] RIP: 0033:0x7f7e6399f957 [ 689.531830] 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 [ 689.531961] RSP: 002b:00007fff2aaada48 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 689.532014] RAX: ffffffffffffffda RBX: 000055f4d4d301f0 RCX: 00007f7e6399f957 [ 689.532066] RDX: 0000000000000001 RSI: 000055f4d4d301f0 RDI: 0000000000000001 [ 689.532117] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000002000 [ 689.532170] R10: 0000000000000001 R11: 0000000000000246 R12: 000055f4d4d1c580 [ 689.532222] R13: 000055f4d4cfd2a0 R14: 0000000000000001 R15: 000055f4d4d1c580 [ 689.532274] [ 689.532295] handlers: [ 689.532317] [<00000000cc8998fd>] serial8250_interrupt [ 689.532359] Disabling IRQ #4