[ 1888.730940][ C3] irq 4: nobody cared (try booting with the "irqpoll" option) [ 1888.731428][ C3] CPU: 3 UID: 0 PID: 11056 Comm: perl Not tainted 6.12.0-rc3-virtme #1 [ 1888.731707][ C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 1888.732122][ C3] Call Trace: [ 1888.732266][ C3] [ 1888.732360][ C3] dump_stack_lvl+0x82/0xd0 [ 1888.732546][ C3] __report_bad_irq+0x5f/0x180 [ 1888.732725][ C3] note_interrupt+0x6b3/0x860 [ 1888.732920][ C3] handle_irq_event+0x16d/0x1c0 [ 1888.733097][ C3] handle_edge_irq+0x1fa/0xb60 [ 1888.733282][ C3] __common_interrupt+0x82/0x170 [ 1888.733483][ C3] common_interrupt+0x81/0xa0 [ 1888.733656][ C3] [ 1888.733758][ C3] [ 1888.733849][ C3] asm_common_interrupt+0x26/0x40 [ 1888.734052][ C3] RIP: 0010:_raw_spin_unlock_irqrestore+0x43/0x70 [ 1888.734282][ C3] Code: 10 e8 31 89 87 fd 48 89 ef e8 49 fa 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 c5 f6 9a 47 <74> 0e 5b 5d c3 cc cc cc cc e8 ff cb ac fd eb dc 0f 1f 44 00 00 5b [ 1888.734906][ C3] RSP: 0018:ffffc9000213faa0 EFLAGS: 00000286 [ 1888.735151][ C3] RAX: 0000000000000002 RBX: 0000000000000200 RCX: 1ffffffff773e88d [ 1888.735418][ C3] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffb868d211 [ 1888.735690][ C3] RBP: ffffffffbc2b83e0 R08: 0000000000000001 R09: fffffbfff77399d0 [ 1888.735961][ C3] R10: ffffffffbb9cce87 R11: 0000000000000000 R12: 00000000ffffffff [ 1888.736220][ C3] R13: 0000000000000001 R14: ffffffffbc2b84e8 R15: 00000000ffffffff [ 1888.736488][ C3] ? _raw_spin_unlock_irqrestore+0x51/0x70 [ 1888.736712][ C3] uart_write+0x220/0x920 [ 1888.736871][ C3] process_output_block+0x13e/0x790 [ 1888.737050][ C3] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 1888.737276][ C3] n_tty_write+0x40c/0x790 [ 1888.737461][ C3] ? __pfx_n_tty_write+0x10/0x10 [ 1888.737656][ C3] ? trace_lock_acquire+0x14d/0x1f0 [ 1888.737859][ C3] ? __pfx_woken_wake_function+0x10/0x10 [ 1888.738039][ C3] ? iterate_tty_write+0x8f/0x540 [ 1888.738233][ C3] ? lock_acquire+0x32/0xc0 [ 1888.738409][ C3] ? iterate_tty_write+0x8f/0x540 [ 1888.738608][ C3] iterate_tty_write+0x222/0x540 [ 1888.738789][ C3] ? tty_ldisc_ref_wait+0x28/0x80 [ 1888.738987][ C3] file_tty_write.constprop.0+0x1cf/0x360 [ 1888.739179][ C3] vfs_write+0xa77/0x11d0 [ 1888.739329][ C3] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 1888.739510][ C3] ? __pfx_vfs_write+0x10/0x10 [ 1888.739726][ C3] ? clockevents_program_event+0xf6/0x300 [ 1888.739915][ C3] ? clockevents_program_event+0x1ea/0x300 [ 1888.740154][ C3] ksys_write+0xf5/0x1e0 [ 1888.740292][ C3] ? __pfx_ksys_write+0x10/0x10 [ 1888.740481][ C3] do_syscall_64+0xc1/0x1d0 [ 1888.740671][ C3] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 1888.740882][ C3] RIP: 0033:0x7f510ce06957 [ 1888.741062][ 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 [ 1888.741688][ C3] RSP: 002b:00007ffed04c7e28 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 1888.741980][ C3] RAX: ffffffffffffffda RBX: 00005573b435a3f0 RCX: 00007f510ce06957 [ 1888.742265][ C3] RDX: 0000000000000001 RSI: 00005573b435a3f0 RDI: 0000000000000001 [ 1888.742528][ C3] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000002000 [ 1888.742873][ C3] R10: 0000000000000001 R11: 0000000000000246 R12: 00005573b43455e0 [ 1888.743153][ C3] R13: 00005573b43262a0 R14: 0000000000000001 R15: 00005573b43455e0 [ 1888.743444][ C3] [ 1888.743611][ C3] handlers: [ 1888.743746][ C3] [] serial8250_interrupt [ 1888.744419][ C3] Disabling IRQ #4