[  OK  ] Reached target Graphical Interface.
         Starting Update UTMP about System Runlevel Changes...
[  OK  ] Started Update UTMP about System Runlevel Changes.
         Starting Load/Save RF Kill Switch Status...
[  OK  ] Started Load/Save RF Kill Switch Status.

Debian GNU/Linux 9 syzkaller ttyS0

Warning: Permanently added '10.128.0.200' (ECDSA) to the list of known hosts.
syzkaller login: [   36.268371] IPVS: ftp: loaded support on port[0] = 21
executing program
[   38.309194] Bluetooth: hci0: command 0x0409 tx timeout
[   40.387637] Bluetooth: hci0: command 0x041b tx timeout
[   41.329353] INFO: trying to register non-static key.
[   41.334481] the code is fine but needs lockdep annotation.
[   41.340093] turning off the locking correctness validator.
[   41.345696] CPU: 0 PID: 8136 Comm: syz-executor488 Not tainted 4.19.161-syzkaller #0
[   41.353554] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   41.362887] Call Trace:
[   41.365463]  dump_stack+0x1fc/0x2fe
[   41.369075]  register_lock_class+0xe76/0x11c0
[   41.373551]  ? check_preemption_disabled+0x41/0x280
[   41.378546]  ? static_obj+0x50/0x50
[   41.382151]  ? resched_curr+0xc9/0x320
[   41.386017]  ? try_to_wake_up+0x733/0x1050
[   41.390284]  __lock_acquire+0x17d/0x3ff0
[   41.394325]  ? trace_hardirqs_off+0x64/0x200
[   41.398714]  ? _raw_spin_unlock_irqrestore+0x66/0xe0
[   41.403794]  ? try_to_wake_up+0x733/0x1050
[   41.408065]  ? mark_held_locks+0xf0/0xf0
[   41.412112]  ? __queue_work+0x5f1/0x1100
[   41.416155]  ? lock_downgrade+0x720/0x720
[   41.420296]  ? lock_acquire+0x170/0x3c0
[   41.424289]  ? ___preempt_schedule+0x16/0x18
[   41.428680]  lock_acquire+0x170/0x3c0
[   41.432461]  ? skb_dequeue+0x1c/0x180
[   41.436244]  _raw_spin_lock_irqsave+0x8c/0xc0
[   41.440716]  ? skb_dequeue+0x1c/0x180
[   41.444494]  skb_dequeue+0x1c/0x180
[   41.448100]  skb_queue_purge+0x21/0x30
[   41.451966]  l2cap_chan_del+0x690/0xa50
[   41.455921]  l2cap_chan_close+0x1b5/0x950
[   41.460047]  ? __set_monitor_timer+0x200/0x200
[   41.464617]  ? wait_for_completion_io+0x10/0x10
[   41.469262]  ? mark_held_locks+0xa6/0xf0
[   41.473299]  ? __local_bh_enable_ip+0x159/0x270
[   41.477946]  l2cap_sock_shutdown+0x339/0xe10
[   41.482333]  ? l2cap_sock_getname+0x510/0x510
[   41.486804]  ? get_signal+0x3f2/0x1f70
[   41.490667]  ? do_signal+0x8f/0x1670
[   41.494357]  ? exit_to_usermode_loop+0x204/0x2a0
[   41.499089]  ? do_syscall_64+0x538/0x620
[   41.503124]  ? entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   41.508464]  ? l2cap_sock_release+0x6a/0x290
[   41.513282]  ? lock_downgrade+0x720/0x720
[   41.517417]  ? do_raw_write_lock+0xb8/0x1e0
[   41.521720]  l2cap_sock_release+0x77/0x290
[   41.525938]  __sock_release+0xcd/0x2a0
[   41.529818]  ? __sock_release+0x2a0/0x2a0
[   41.533943]  sock_close+0x15/0x20
[   41.537376]  __fput+0x2ce/0x890
[   41.540647]  task_work_run+0x148/0x1c0
[   41.544509]  do_exit+0xbed/0x2be0
[   41.547943]  ? mark_held_locks+0xf0/0xf0
[   41.551988]  ? mm_update_next_owner+0x650/0x650
[   41.556635]  ? get_signal+0x388/0x1f70
[   41.560499]  ? lock_downgrade+0x720/0x720
[   41.564648]  ? lock_acquire+0x170/0x3c0
[   41.568601]  do_group_exit+0x125/0x310
[   41.572465]  get_signal+0x3f2/0x1f70
[   41.576155]  ? __local_bh_enable_ip+0x159/0x270
[   41.580799]  do_signal+0x8f/0x1670
[   41.584331]  ? l2cap_sock_accept+0x550/0x550
[   41.588716]  ? __might_fault+0x192/0x1d0
[   41.592752]  ? setup_sigcontext+0x820/0x820
[   41.597073]  ? l2cap_sock_accept+0x550/0x550
[   41.601456]  ? __ia32_sys_accept+0xb0/0xb0
[   41.605668]  ? __sys_setsockopt+0x179/0x240
[   41.609967]  ? kernel_accept+0x310/0x310
[   41.614012]  ? up_read+0x17/0x110
[   41.617442]  ? exit_to_usermode_loop+0x36/0x2a0
[   41.622106]  exit_to_usermode_loop+0x204/0x2a0
[   41.626664]  do_syscall_64+0x538/0x620
[   41.630530]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   41.635705] RIP: 0033:0x446eb9
[   41.638884] Code: Bad RIP value.
[   41.642235] RSP: 002b:00007ffc25dc31a8 EFLAGS: 00000246 ORIG_RAX: 000000000000002a
[   41.649927] RAX: fffffffffffffffc RBX: 0000000000000003 RCX: 0000000000446eb9
[   41.657172] RDX: 000000000000000e RSI: 0000000020000080 RDI: 0000000000000004
[   41.664429] RBP: 0000000000000003 R08: 00000000000000ff R09: 00000000000000ff
[   41.671675] R10: 000000000000000c R11: 0000000000000246 R12: 00000000014af850
executing program
[   41.678929] R13: 0000000000000072 R14: 0000000000000000 R15: 0000000000000000
[   42.466725] Bluetooth: hci0: command 0x040f tx timeout
[   44.545844] Bluetooth: hci0: command 0x0419 tx timeout
[   46.625134] Bluetooth: hci0: command 0x0405 tx timeout
executing program