[ 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 '10.128.0.183' (ECDSA) to the list of known hosts. syzkaller login: [ 76.156300] IPVS: ftp: loaded support on port[0] = 21 [ 76.251263] IPVS: ftp: loaded support on port[0] = 21 [ 76.292109] IPVS: ftp: loaded support on port[0] = 21 [ 76.355364] IPVS: ftp: loaded support on port[0] = 21 [ 76.426526] IPVS: ftp: loaded support on port[0] = 21 [ 76.528793] IPVS: ftp: loaded support on port[0] = 21 [ 100.380605] watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [syz-executor777:8974] [ 100.388556] Modules linked in: [ 100.391729] irq event stamp: 9662 [ 100.395166] hardirqs last enabled at (9661): [] kvm_wait+0x14b/0x240 [ 100.403285] hardirqs last disabled at (9662): [] apic_timer_interrupt+0x8e/0xa0 [ 100.412273] softirqs last enabled at (662): [] __do_softirq+0x68b/0x9ff [ 100.420650] softirqs last disabled at (477): [] irq_exit+0x193/0x240 [ 100.428683] CPU: 1 PID: 8974 Comm: syz-executor777 Not tainted 4.14.280-syzkaller #0 [ 100.437144] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 100.446476] task: ffff888092d7a100 task.stack: ffff888093ac8000 [ 100.452512] RIP: 0010:native_safe_halt+0xe/0x10 [ 100.457161] RSP: 0018:ffff888093acf960 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff10 [ 100.464847] RAX: 1ffffffff11e1314 RBX: ffffffff89ddb66c RCX: 1ffff110125af549 [ 100.472095] RDX: dffffc0000000000 RSI: ffff888092d7aa28 RDI: ffff888092d7a984 [ 100.479342] RBP: 0000000000000003 R08: 0000000000000001 R09: 0000000000000000 [ 100.486590] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000282 [ 100.493837] R13: dffffc0000000000 R14: ffffffff89ddb66d R15: ffffed10174a69e8 [ 100.501087] FS: 0000555555a80300(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 [ 100.509288] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 100.515147] CR2: 0000000020000040 CR3: 0000000092df0000 CR4: 00000000003406e0 [ 100.522398] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 100.529646] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 100.536893] Call Trace: [ 100.539465] kvm_wait+0x179/0x240 [ 100.542907] __pv_queued_spin_lock_slowpath+0x722/0x910 [ 100.548252] ? hci_send_to_channel+0x3c/0x200 [ 100.552726] queued_read_lock_slowpath+0x150/0x190 [ 100.557634] hci_send_to_channel+0x3c/0x200 [ 100.561937] hci_send_monitor_ctrl_event+0x3dd/0x500 [ 100.567022] mgmt_send_event+0x2b3/0x330 [ 100.571062] unblock_device+0x135/0x1f0 [ 100.575014] ? set_device_id+0x460/0x460 [ 100.579055] hci_sock_sendmsg+0x175b/0x1d00 [ 100.583357] ? hci_send_to_channel+0x200/0x200 [ 100.587920] ? lock_acquire+0x170/0x3f0 [ 100.591873] ? security_socket_sendmsg+0x83/0xb0 [ 100.596607] ? hci_send_to_channel+0x200/0x200 [ 100.601166] sock_sendmsg+0xb5/0x100 [ 100.604859] sock_write_iter+0x22c/0x370 [ 100.608898] ? sock_sendmsg+0x100/0x100 [ 100.612856] ? iov_iter_init+0xa6/0x1c0 [ 100.616813] __vfs_write+0x44c/0x630 [ 100.620505] ? kernel_read+0x110/0x110 [ 100.624375] ? rw_verify_area+0xe1/0x2a0 [ 100.628421] vfs_write+0x17f/0x4d0 [ 100.631946] SyS_write+0xf2/0x210 [ 100.635380] ? SyS_read+0x210/0x210 [ 100.638986] ? __do_page_fault+0x159/0xad0 [ 100.643199] ? do_syscall_64+0x4c/0x640 [ 100.647150] ? SyS_read+0x210/0x210 [ 100.650755] do_syscall_64+0x1d5/0x640 [ 100.654624] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 100.659790] RIP: 0033:0x7fadfd73e419 [ 100.663479] RSP: 002b:00007ffc00326878 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 100.671163] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fadfd73e419 [ 100.678409] RDX: 000000000000000d RSI: 00000000200000c0 RDI: 0000000000000004 [ 100.685658] RBP: 0000000000000003 R08: 0000000000000150 R09: 0000000000000150 [ 100.692930] R10: 0000000000000150 R11: 0000000000000246 R12: 0000555555a802b8 [ 100.700178] R13: 0000000000000011 R14: 00007ffc003268e0 R15: 00007ffc00326898 [ 100.707433] Code: 94 5a fa e9 4f ff ff ff 48 89 ef e8 bd 94 5a fa eb 93 90 90 90 90 90 90 90 90 90 90 90 e9 07 00 00 00 0f 00 2d 24 23 63 00 fb f4 90 e9 07 00 00 00 0f 00 2d 14 23 63 00 f4 c3 90 90 41 55 41 [ 100.726575] Kernel panic - not syncing: softlockup: hung tasks [ 100.732525] CPU: 1 PID: 8974 Comm: syz-executor777 Tainted: G L 4.14.280-syzkaller #0 [ 100.741594] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 100.750923] Call Trace: [ 100.753483] [ 100.755611] dump_stack+0x1b2/0x281 [ 100.759218] panic+0x1f9/0x42d [ 100.762387] ? add_taint.cold+0x16/0x16 [ 100.766344] watchdog_timer_fn.cold+0x16/0x25 [ 100.770819] __hrtimer_run_queues+0x30b/0xc80 [ 100.775293] ? watchdog+0x50/0x50 [ 100.778727] ? retrigger_next_event+0x310/0x310 [ 100.783374] ? ktime_get_update_offsets_now+0x272/0x3f0 [ 100.788717] hrtimer_interrupt+0x1e6/0x5e0 [ 100.792944] smp_apic_timer_interrupt+0x117/0x5e0 [ 100.797766] apic_timer_interrupt+0x93/0xa0 [ 100.802062] [ 100.804293] RIP: 0010:native_safe_halt+0xe/0x10 [ 100.808941] RSP: 0018:ffff888093acf960 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff10 [ 100.816626] RAX: 1ffffffff11e1314 RBX: ffffffff89ddb66c RCX: 1ffff110125af549 [ 100.823877] RDX: dffffc0000000000 RSI: ffff888092d7aa28 RDI: ffff888092d7a984 [ 100.831128] RBP: 0000000000000003 R08: 0000000000000001 R09: 0000000000000000 [ 100.838376] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000282 [ 100.845624] R13: dffffc0000000000 R14: ffffffff89ddb66d R15: ffffed10174a69e8 [ 100.852913] kvm_wait+0x179/0x240 [ 100.856366] __pv_queued_spin_lock_slowpath+0x722/0x910 [ 100.861715] ? hci_send_to_channel+0x3c/0x200 [ 100.866200] queued_read_lock_slowpath+0x150/0x190 [ 100.871115] hci_send_to_channel+0x3c/0x200 [ 100.875421] hci_send_monitor_ctrl_event+0x3dd/0x500 [ 100.880509] mgmt_send_event+0x2b3/0x330 [ 100.884554] unblock_device+0x135/0x1f0 [ 100.888505] ? set_device_id+0x460/0x460 [ 100.892545] hci_sock_sendmsg+0x175b/0x1d00 [ 100.896856] ? hci_send_to_channel+0x200/0x200 [ 100.901417] ? lock_acquire+0x170/0x3f0 [ 100.905369] ? security_socket_sendmsg+0x83/0xb0 [ 100.910101] ? hci_send_to_channel+0x200/0x200 [ 100.914776] sock_sendmsg+0xb5/0x100 [ 100.918486] sock_write_iter+0x22c/0x370 [ 100.922535] ? sock_sendmsg+0x100/0x100 [ 100.926498] ? iov_iter_init+0xa6/0x1c0 [ 100.930458] __vfs_write+0x44c/0x630 [ 100.934149] ? kernel_read+0x110/0x110 [ 100.938021] ? rw_verify_area+0xe1/0x2a0 [ 100.942062] vfs_write+0x17f/0x4d0 [ 100.945582] SyS_write+0xf2/0x210 [ 100.949015] ? SyS_read+0x210/0x210 [ 100.952619] ? __do_page_fault+0x159/0xad0 [ 100.956838] ? do_syscall_64+0x4c/0x640 [ 100.960789] ? SyS_read+0x210/0x210 [ 100.964400] do_syscall_64+0x1d5/0x640 [ 100.968269] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 100.973440] RIP: 0033:0x7fadfd73e419 [ 100.977134] RSP: 002b:00007ffc00326878 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 100.984821] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fadfd73e419 [ 100.992070] RDX: 000000000000000d RSI: 00000000200000c0 RDI: 0000000000000004 [ 100.999320] RBP: 0000000000000003 R08: 0000000000000150 R09: 0000000000000150 [ 101.006567] R10: 0000000000000150 R11: 0000000000000246 R12: 0000555555a802b8 [ 101.013813] R13: 0000000000000011 R14: 00007ffc003268e0 R15: 00007ffc00326898 [ 101.021385] Kernel Offset: disabled [ 101.025037] Rebooting in 86400 seconds..