[ 2025.220971][ C0] irq 51: nobody cared (try booting with the "irqpoll" option) [ 2025.221806][ C0] CPU: 0 UID: 0 PID: 7035 Comm: perl Not tainted 6.17.0-rc3-virtme #1 PREEMPT(full) [ 2025.221813][ C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 2025.221816][ C0] Call Trace: [ 2025.221820][ C0] [ 2025.221824][ C0] dump_stack_lvl+0x82/0xc0 [ 2025.221839][ C0] __report_bad_irq+0x5f/0x1b0 [ 2025.221854][ C0] note_interrupt+0x661/0x7e0 [ 2025.221867][ C0] handle_irq_event+0x165/0x1c0 [ 2025.221877][ C0] handle_edge_irq+0x324/0x880 [ 2025.221895][ C0] __common_interrupt+0xa4/0x230 [ 2025.221906][ C0] common_interrupt+0xb9/0xe0 [ 2025.221913][ C0] [ 2025.221915][ C0] [ 2025.221922][ C0] asm_common_interrupt+0x26/0x40 [ 2025.221930][ C0] RIP: 0010:_raw_spin_unlock_irqrestore+0x41/0x70 [ 2025.221940][ C0] Code: 74 24 10 e8 61 4b 03 fe 48 89 ef e8 89 9a 03 fe 81 e3 00 02 00 00 75 25 9c 58 f6 c4 02 75 2d 48 85 db 74 01 fb bf 01 00 00 00 4a d0 f7 fd 65 8b 05 a3 2e 0b 02 85 c0 74 0a 5b 5d c3 e8 e7 4d [ 2025.221944][ C0] RSP: 0018:ffffc9000361fa98 EFLAGS: 00000206 [ 2025.221951][ C0] RAX: 0000000000000002 RBX: 0000000000000200 RCX: 0000000000000040 [ 2025.221953][ C0] RDX: 0000000000000000 RSI: ffffffff85bc63ac RDI: 0000000000000001 [ 2025.221956][ C0] RBP: ffffffff8844a380 R08: 0000000000000001 R09: 0000000000000001 [ 2025.221959][ C0] R10: ffffffff86a12f17 R11: ffff888005848970 R12: 00000000ffffffff [ 2025.221962][ C0] R13: 0000000000000001 R14: ffffffff8844a488 R15: 00000000ffffffff [ 2025.222000][ C0] uart_write+0x220/0x920 [ 2025.222016][ C0] process_output_block+0x142/0x7b0 [ 2025.222025][ C0] ? _raw_spin_unlock_irqrestore+0x59/0x70 [ 2025.222038][ C0] n_tty_write+0x426/0x7c0 [ 2025.222042][ C0] ? _copy_from_iter+0x1d1/0x1340 [ 2025.222060][ C0] ? n_tty_receive_signal_char+0x110/0x110 [ 2025.222070][ C0] ? __init_waitqueue_head+0x150/0x150 [ 2025.222081][ C0] ? lock_acquire+0x104/0x160 [ 2025.222085][ C0] ? iterate_tty_write+0x91/0x530 [ 2025.222102][ C0] iterate_tty_write+0x220/0x530 [ 2025.222112][ C0] ? tty_ldisc_ref_wait+0x28/0x80 [ 2025.222124][ C0] file_tty_write.constprop.0+0x1cf/0x360 [ 2025.222138][ C0] vfs_write+0xaae/0x12c0 [ 2025.222149][ C0] ? find_held_lock+0x2b/0x80 [ 2025.222157][ C0] ? kernel_write+0x6b0/0x6b0 [ 2025.222169][ C0] ? clockevents_program_event+0xf3/0x2f0 [ 2025.222188][ C0] ? clockevents_program_event+0x1e4/0x2f0 [ 2025.222201][ C0] ksys_write+0xf7/0x1d0 [ 2025.222209][ C0] ? __ia32_sys_read+0xb0/0xb0 [ 2025.222230][ C0] do_syscall_64+0xc1/0x370 [ 2025.222238][ C0] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 2025.222243][ C0] RIP: 0033:0x7f52f45f3337 [ 2025.222251][ C0] Code: 0f 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 [ 2025.222255][ C0] RSP: 002b:00007ffdab186c98 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 2025.222260][ C0] RAX: ffffffffffffffda RBX: 000055645f4af2e0 RCX: 00007f52f45f3337 [ 2025.222264][ C0] RDX: 0000000000000001 RSI: 000055645f4af2e0 RDI: 0000000000000001 [ 2025.222266][ C0] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000002000 [ 2025.222269][ C0] R10: 0000000000000001 R11: 0000000000000246 R12: 000055645f49a600 [ 2025.222272][ C0] R13: 000055645f47b2a0 R14: 0000000000000001 R15: 000055645f49a600 [ 2025.222302][ C0] [ 2025.222304][ C0] handlers: [ 2025.242468][ C0] [] serial8250_interrupt [ 2025.242983][ C0] Disabling IRQ #51