[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.154' (ECDSA) to the list of known hosts. syzkaller login: [ 50.532773] IPVS: ftp: loaded support on port[0] = 21 [ 50.608519] IPVS: ftp: loaded support on port[0] = 21 [ 50.672389] IPVS: ftp: loaded support on port[0] = 21 [ 50.722250] IPVS: ftp: loaded support on port[0] = 21 [ 50.803532] IPVS: ftp: loaded support on port[0] = 21 [ 50.898579] IPVS: ftp: loaded support on port[0] = 21 [ 52.523318] Bluetooth: hci1 command 0x0409 tx timeout [ 52.523324] Bluetooth: hci5 command 0x0409 tx timeout [ 52.602813] Bluetooth: hci3 command 0x0409 tx timeout [ 52.608403] Bluetooth: hci0 command 0x0409 tx timeout [ 52.623592] Bluetooth: hci4 command 0x0409 tx timeout [ 52.637916] Bluetooth: hci2 command 0x0409 tx timeout [ 76.269856] watchdog: BUG: soft lockup - CPU#0 stuck for 23s! [syz-executor430:10031] [ 76.277866] Modules linked in: [ 76.281042] irq event stamp: 9522 [ 76.284565] hardirqs last enabled at (9521): [] kvm_wait+0x14b/0x240 [ 76.292872] hardirqs last disabled at (9522): [] apic_timer_interrupt+0x8e/0xa0 [ 76.302214] softirqs last enabled at (728): [] __do_softirq+0x68b/0x9ff [ 76.310595] softirqs last disabled at (461): [] irq_exit+0x193/0x240 [ 76.318640] CPU: 0 PID: 10031 Comm: syz-executor430 Not tainted 4.14.299-syzkaller #0 [ 76.327539] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 76.336873] task: ffff8880a19823c0 task.stack: ffff8880aa398000 [ 76.343025] RIP: 0010:native_safe_halt+0xe/0x10 [ 76.347671] RSP: 0018:ffff8880aa39f960 EFLAGS: 000002c2 ORIG_RAX: ffffffffffffff10 [ 76.355679] RAX: 1ffffffff11e13dc RBX: ffffffff89dd9e2c RCX: 1ffff110143305a1 [ 76.363121] RDX: dffffc0000000000 RSI: ffff8880a1982ce8 RDI: ffff8880a1982c44 [ 76.371517] RBP: 0000000000000003 R08: 0000000000000001 R09: 0000000000000000 [ 76.378871] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000286 [ 76.386123] R13: dffffc0000000000 R14: ffffffff89dd9e2d R15: ffffed10174869f8 [ 76.393749] FS: 00005555572e3300(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 [ 76.401971] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 76.407842] CR2: 00007fa6cea586f8 CR3: 00000000a16a6000 CR4: 00000000003406f0 [ 76.415101] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 76.422365] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 76.429619] Call Trace: [ 76.432193] kvm_wait+0x179/0x240 [ 76.435632] __pv_queued_spin_lock_slowpath+0x722/0x910 [ 76.440980] ? hci_send_to_channel+0x3c/0x200 [ 76.445466] queued_read_lock_slowpath+0x150/0x190 [ 76.450377] hci_send_to_channel+0x3c/0x200 [ 76.454685] hci_send_monitor_ctrl_event+0x3dd/0x500 [ 76.459789] mgmt_send_event+0x2b3/0x330 [ 76.463837] unblock_device+0x135/0x1f0 [ 76.468005] ? set_device_id+0x460/0x460 [ 76.472062] hci_sock_sendmsg+0x175b/0x1d00 [ 76.476452] ? hci_send_to_channel+0x200/0x200 [ 76.481242] ? lock_acquire+0x170/0x3f0 [ 76.485287] ? security_socket_sendmsg+0x83/0xb0 [ 76.490025] ? hci_send_to_channel+0x200/0x200 [ 76.494594] sock_sendmsg+0xb5/0x100 [ 76.498292] sock_write_iter+0x22c/0x370 [ 76.502340] ? sock_sendmsg+0x100/0x100 [ 76.506395] ? iov_iter_init+0xa6/0x1c0 [ 76.510374] __vfs_write+0x44c/0x630 [ 76.514072] ? kernel_read+0x110/0x110 [ 76.517971] ? rw_verify_area+0xe1/0x2a0 [ 76.522028] vfs_write+0x17f/0x4d0 [ 76.525552] SyS_write+0xf2/0x210 [ 76.528988] ? SyS_read+0x210/0x210 [ 76.532593] ? __do_page_fault+0x159/0xad0 [ 76.536809] ? do_syscall_64+0x4c/0x640 [ 76.540861] ? SyS_read+0x210/0x210 [ 76.544469] do_syscall_64+0x1d5/0x640 [ 76.548350] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 76.553521] Code: 6b 5a fa e9 4f ff ff ff 48 89 ef e8 6d 6b 5a fa eb 93 90 90 90 90 90 90 90 90 90 90 90 0f 1f 44 00 00 0f 00 2d 94 ec 62 00 fb f4 90 0f 1f 44 00 00 0f 00 2d 84 ec 62 00 f4 c3 90 90 41 55 41 [ 76.573152] Kernel panic - not syncing: softlockup: hung tasks [ 76.579229] CPU: 0 PID: 10031 Comm: syz-executor430 Tainted: G L 4.14.299-syzkaller #0 [ 76.588503] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 76.598194] Call Trace: [ 76.600931] [ 76.603072] dump_stack+0x1b2/0x281 [ 76.606779] panic+0x1f9/0x42d [ 76.609969] ? add_taint.cold+0x16/0x16 [ 76.613937] watchdog_timer_fn.cold+0x16/0x25 [ 76.618416] __hrtimer_run_queues+0x30b/0xc80 [ 76.622890] ? watchdog+0x50/0x50 [ 76.626326] ? retrigger_next_event+0x310/0x310 [ 76.630980] ? ktime_get_update_offsets_now+0x272/0x3f0 [ 76.636328] hrtimer_interrupt+0x1e6/0x5e0 [ 76.640553] smp_apic_timer_interrupt+0x117/0x5e0 [ 76.645381] apic_timer_interrupt+0x93/0xa0 [ 76.649685] [ 76.651905] ? native_safe_halt+0xe/0x10 [ 76.655952] ? kvm_wait+0x179/0x240 [ 76.659575] ? __pv_queued_spin_lock_slowpath+0x722/0x910 [ 76.665093] ? hci_send_to_channel+0x3c/0x200 [ 76.669572] ? queued_read_lock_slowpath+0x150/0x190 [ 76.674658] ? hci_send_to_channel+0x3c/0x200 [ 76.679131] ? hci_send_monitor_ctrl_event+0x3dd/0x500 [ 76.684651] ? mgmt_send_event+0x2b3/0x330 [ 76.688866] ? unblock_device+0x135/0x1f0 [ 76.692991] ? set_device_id+0x460/0x460 [ 76.697034] ? hci_sock_sendmsg+0x175b/0x1d00 [ 76.701509] ? hci_send_to_channel+0x200/0x200 [ 76.706079] ? lock_acquire+0x170/0x3f0 [ 76.710134] ? security_socket_sendmsg+0x83/0xb0 [ 76.714869] ? hci_send_to_channel+0x200/0x200 [ 76.719433] ? sock_sendmsg+0xb5/0x100 [ 76.723329] ? sock_write_iter+0x22c/0x370 [ 76.727552] ? sock_sendmsg+0x100/0x100 [ 76.731514] ? iov_iter_init+0xa6/0x1c0 [ 76.735471] ? __vfs_write+0x44c/0x630 [ 76.739426] ? kernel_read+0x110/0x110 [ 76.743308] ? rw_verify_area+0xe1/0x2a0 [ 76.747357] ? vfs_write+0x17f/0x4d0 [ 76.751065] ? SyS_write+0xf2/0x210 [ 76.754676] ? SyS_read+0x210/0x210 [ 76.758289] ? __do_page_fault+0x159/0xad0 [ 76.762503] ? do_syscall_64+0x4c/0x640 [ 76.767010] ? SyS_read+0x210/0x210 [ 76.770626] ? do_syscall_64+0x1d5/0x640 [ 76.774776] ? entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 76.780611] Kernel Offset: disabled [ 76.784592] Rebooting in 86400 seconds..