[[0;32m OK [0m] Reached target Login Prompts.
[[0;32m OK [0m] Reached target Multi-User System.
[[0;32m OK [0m] Reached target Graphical Interface.
Starting Update UTMP about System Runlevel Changes...
[[0;32m OK [0m] Started Update UTMP about System Runlevel Changes.
Debian GNU/Linux 9 syzkaller ttyS0
Warning: Permanently added '10.128.1.40' (ECDSA) to the list of known hosts.
syzkaller login: [ 40.375393][ T6814] IPVS: ftp: loaded support on port[0] = 21
executing program
[ 41.451340][ T6814] INFO: trying to register non-static key.
[ 41.457177][ T6814] the code is fine but needs lockdep annotation.
[ 41.463495][ T6814] turning off the locking correctness validator.
[ 41.469842][ T6814] CPU: 0 PID: 6814 Comm: syz-executor233 Not tainted 5.8.0-rc7-syzkaller #0
[ 41.478509][ T6814] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 41.488819][ T6814] Call Trace:
[ 41.492088][ T6814] dump_stack+0x1f0/0x31e
[ 41.496490][ T6814] register_lock_class+0xf06/0x1520
[ 41.501669][ T6814] ? lock_is_held_type+0x87/0xe0
[ 41.506583][ T6814] __lock_acquire+0x102/0x2c30
[ 41.511327][ T6814] ? mark_lock+0x102/0x1b00
[ 41.515840][ T6814] ? preempt_schedule_notrace_thunk+0x16/0x31
[ 41.522130][ T6814] lock_acquire+0x160/0x720
[ 41.526701][ T6814] ? skb_queue_purge+0x2e/0x1c0
[ 41.531615][ T6814] ? lockdep_hardirqs_on_prepare+0x425/0x6e0
[ 41.537574][ T6814] ? queue_delayed_work_on+0x149/0x1b0
[ 41.543010][ T6814] _raw_spin_lock_irqsave+0x9e/0xc0
[ 41.548189][ T6814] ? skb_queue_purge+0x2e/0x1c0
[ 41.553015][ T6814] skb_queue_purge+0x2e/0x1c0
[ 41.557673][ T6814] l2cap_conn_del+0x3de/0x650
[ 41.562329][ T6814] ? l2cap_connect_cfm+0x12b0/0x12b0
[ 41.567700][ T6814] hci_conn_hash_flush+0x127/0x200
[ 41.572789][ T6814] hci_dev_do_close+0xb7b/0x1040
[ 41.577706][ T6814] ? hci_unregister_dev+0x159/0x1590
[ 41.582968][ T6814] hci_unregister_dev+0x16d/0x1590
[ 41.588056][ T6814] ? vhci_open+0x290/0x290
[ 41.592446][ T6814] vhci_release+0x73/0xc0
[ 41.596752][ T6814] __fput+0x2f0/0x750
[ 41.600713][ T6814] task_work_run+0x137/0x1c0
[ 41.605363][ T6814] do_exit+0x601/0x1f80
[ 41.609495][ T6814] do_group_exit+0x161/0x2d0
[ 41.614247][ T6814] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 41.620506][ T6814] __do_sys_exit_group+0x13/0x20
[ 41.625501][ T6814] __se_sys_exit_group+0x10/0x10
[ 41.630417][ T6814] __x64_sys_exit_group+0x37/0x40
[ 41.635425][ T6814] do_syscall_64+0x73/0xe0
[ 41.639821][ T6814] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 41.645692][ T6814] RIP: 0033:0x444fe8
[ 41.649621][ T6814] Code: Bad RIP value.
[ 41.653666][ T6814] RSP: 002b:00007ffcbe609c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
[ 41.662055][ T6814] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000444fe8
[ 41.670008][ T6814] RDX: 0000000000000001 RSI: 000000000000003c RDI: 0000000000000001
[ 41.678043][ T6814] RBP: 00000000004cce10 R08: 00000000000000e7 R09: ffffffffffffffd0
[ 41.686289][ T6814] R10: 00007f8c08b39700 R11: 0000000000000246 R12: 0000000000000001
[ 41.694241][ T6814] R13: 00000000006e0200 R14: 0000000000f88850 R15: 0000000000000001