[ 1340.276238][ C3] irq 4: nobody cared (try booting with the "irqpoll" option) [ 1340.276676][ C3] CPU: 3 UID: 0 PID: 5725 Comm: perl Not tainted 6.12.0-rc2-virtme #1 [ 1340.276915][ C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 1340.277256][ C3] Call Trace: [ 1340.277381][ C3] [ 1340.277473][ C3] dump_stack_lvl+0x82/0xd0 [ 1340.277656][ C3] __report_bad_irq+0x5f/0x180 [ 1340.277821][ C3] note_interrupt+0x6b3/0x860 [ 1340.277985][ C3] handle_irq_event+0x16d/0x1c0 [ 1340.278147][ C3] handle_edge_irq+0x1fa/0xb60 [ 1340.278312][ C3] __common_interrupt+0x82/0x170 [ 1340.278478][ C3] common_interrupt+0x81/0xa0 [ 1340.278651][ C3] [ 1340.278744][ C3] [ 1340.278831][ C3] asm_common_interrupt+0x26/0x40 [ 1340.278986][ C3] RIP: 0010:_raw_spin_unlock_irqrestore+0x43/0x70 [ 1340.279190][ C3] Code: 10 e8 81 ad 87 fd 48 89 ef e8 99 1e 88 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 75 19 1b 72 <74> 0e 5b 5d c3 cc cc cc cc e8 6f ed ac fd eb dc 0f 1f 44 00 00 5b [ 1340.279763][ C3] RSP: 0018:ffffc900013afaa0 EFLAGS: 00000286 [ 1340.279965][ C3] RAX: 0000000000000006 RBX: 0000000000000200 RCX: 1ffffffff223ecbf [ 1340.280206][ C3] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8de8afa1 [ 1340.280434][ C3] RBP: ffffffff91aba3e0 R08: 0000000000000001 R09: fffffbfff2239dd0 [ 1340.280669][ C3] R10: ffffffff911cee87 R11: 0000000000000000 R12: 00000000ffffffff [ 1340.280908][ C3] R13: 0000000000000001 R14: ffffffff91aba4e8 R15: 00000000ffffffff [ 1340.281151][ C3] ? _raw_spin_unlock_irqrestore+0x51/0x70 [ 1340.281351][ C3] uart_write+0x220/0x920 [ 1340.281482][ C3] process_output_block+0x13e/0x790 [ 1340.281642][ C3] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 1340.281836][ C3] n_tty_write+0x40c/0x790 [ 1340.281995][ C3] ? __pfx_n_tty_write+0x10/0x10 [ 1340.282147][ C3] ? trace_lock_acquire+0x14d/0x1f0 [ 1340.282309][ C3] ? __pfx_woken_wake_function+0x10/0x10 [ 1340.282464][ C3] ? iterate_tty_write+0x8f/0x540 [ 1340.282618][ C3] ? lock_acquire+0x32/0xc0 [ 1340.282770][ C3] ? iterate_tty_write+0x8f/0x540 [ 1340.282931][ C3] iterate_tty_write+0x222/0x540 [ 1340.283087][ C3] ? tty_ldisc_ref_wait+0x28/0x80 [ 1340.283255][ C3] file_tty_write.constprop.0+0x1cf/0x360 [ 1340.283413][ C3] vfs_write+0xa77/0x11d0 [ 1340.283538][ C3] ? __pfx___lock_release+0x10/0x10 [ 1340.283688][ C3] ? trace_lock_acquire+0x14d/0x1f0 [ 1340.283840][ C3] ? __might_fault+0xc3/0x170 [ 1340.283999][ C3] ? lock_acquire+0x32/0xc0 [ 1340.284159][ C3] ? __pfx_vfs_write+0x10/0x10 [ 1340.284322][ C3] ? __might_fault+0x11b/0x170 [ 1340.284484][ C3] ? __rseq_handle_notify_resume+0x354/0x4e0 [ 1340.284691][ C3] ksys_write+0xf5/0x1e0 [ 1340.284808][ C3] ? __pfx_ksys_write+0x10/0x10 [ 1340.284976][ C3] do_syscall_64+0xc1/0x1d0 [ 1340.285134][ C3] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 1340.285330][ C3] RIP: 0033:0x7f42f28a5957 [ 1340.285488][ 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 [ 1340.286045][ C3] RSP: 002b:00007fff0a06bbc8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 1340.286284][ C3] RAX: ffffffffffffffda RBX: 0000557c6d0312b0 RCX: 00007f42f28a5957 [ 1340.286513][ C3] RDX: 0000000000000001 RSI: 0000557c6d0312b0 RDI: 0000000000000001 [ 1340.286738][ C3] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000002000 [ 1340.286991][ C3] R10: 0000000000000001 R11: 0000000000000246 R12: 0000557c6d01c5e0 [ 1340.287217][ C3] R13: 0000557c6cffd2a0 R14: 0000000000000001 R15: 0000557c6d01c5e0 [ 1340.287454][ C3] [ 1340.287572][ C3] handlers: [ 1340.287688][ C3] [] serial8250_interrupt [ 1340.288023][ C3] Disabling IRQ #4