Warning: Permanently added '10.128.0.28' (ECDSA) to the list of known hosts.
syzkaller login: [   64.374121][ T6851] IPVS: ftp: loaded support on port[0] = 21
executing program
[   65.528566][ T6851] INFO: trying to register non-static key.
[   65.534532][ T6851] the code is fine but needs lockdep annotation.
[   65.541150][ T6851] turning off the locking correctness validator.
[   65.547476][ T6851] CPU: 0 PID: 6851 Comm: syz-executor253 Not tainted 5.8.0-rc7-next-20200730-syzkaller #0
[   65.557451][ T6851] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   65.567763][ T6851] Call Trace:
[   65.571156][ T6851]  dump_stack+0x18f/0x20d
[   65.575846][ T6851]  register_lock_class+0x157d/0x1630
[   65.581216][ T6851]  ? lock_is_held_type+0xbb/0xf0
[   65.586296][ T6851]  ? is_dynamic_key+0x1a0/0x1a0
[   65.591301][ T6851]  ? find_held_lock+0x2d/0x110
[   65.596581][ T6851]  ? try_to_wake_up+0x57e/0x12b0
[   65.601605][ T6851]  __lock_acquire+0xf9/0x5640
[   65.606276][ T6851]  ? lockdep_hardirqs_off+0x7e/0xb0
[   65.611453][ T6851]  ? trace_hardirqs_off+0x27/0x210
[   65.616822][ T6851]  ? _raw_spin_unlock_irqrestore+0x9b/0xe0
[   65.622614][ T6851]  ? lockdep_hardirqs_on_prepare+0x530/0x530
[   65.630015][ T6851]  ? find_held_lock+0x2d/0x110
[   65.634856][ T6851]  ? __queue_work+0x61a/0xf20
[   65.639552][ T6851]  lock_acquire+0x1f1/0xad0
[   65.644035][ T6851]  ? skb_dequeue+0x1c/0x180
[   65.648520][ T6851]  ? lock_release+0x8e0/0x8e0
[   65.653174][ T6851]  ? mark_lock+0xbc/0x1710
[   65.657689][ T6851]  ? __queue_work+0x63c/0xf20
[   65.662350][ T6851]  ? mark_held_locks+0x9f/0xe0
[   65.667302][ T6851]  ? lockdep_hardirqs_off+0x7e/0xb0
[   65.672485][ T6851]  _raw_spin_lock_irqsave+0x8c/0xc0
[   65.677662][ T6851]  ? skb_dequeue+0x1c/0x180
[   65.682144][ T6851]  skb_dequeue+0x1c/0x180
[   65.686680][ T6851]  skb_queue_purge+0x21/0x30
[   65.691360][ T6851]  l2cap_chan_del+0x61d/0x1300
[   65.696290][ T6851]  l2cap_conn_del+0x46a/0x9e0
[   65.700972][ T6851]  ? l2cap_conn_del+0x9e0/0x9e0
[   65.705815][ T6851]  l2cap_disconn_cfm+0x85/0xa0
[   65.710559][ T6851]  hci_conn_hash_flush+0x114/0x220
[   65.715943][ T6851]  hci_dev_do_close+0x5c6/0x1080
[   65.720871][ T6851]  ? hci_dev_open+0x350/0x350
[   65.725709][ T6851]  ? do_raw_read_unlock+0x70/0x70
[   65.730768][ T6851]  ? try_to_grab_pending.part.0+0x7d0/0x7d0
[   65.736641][ T6851]  hci_unregister_dev+0x1bd/0xe30
[   65.741646][ T6851]  ? fcntl_setlk+0xf60/0xf60
[   65.746300][ T6851]  ? lock_is_held_type+0xbb/0xf0
[   65.751218][ T6851]  vhci_release+0x70/0xe0
[   65.755526][ T6851]  __fput+0x285/0x920
[   65.759793][ T6851]  ? vhci_close_dev+0x50/0x50
[   65.764548][ T6851]  task_work_run+0xdd/0x190
[   65.769085][ T6851]  do_exit+0xb7d/0x29f0
[   65.773264][ T6851]  ? mm_update_next_owner+0x7a0/0x7a0
[   65.778627][ T6851]  ? __sb_end_write+0xf8/0x1d0
[   65.783374][ T6851]  ? vfs_write+0x1b0/0x730
[   65.787773][ T6851]  ? lock_is_held_type+0xbb/0xf0
[   65.793124][ T6851]  do_group_exit+0x125/0x310
[   65.797695][ T6851]  __x64_sys_exit_group+0x3a/0x50
[   65.802697][ T6851]  do_syscall_64+0x2d/0x70
[   65.807098][ T6851]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   65.813109][ T6851] RIP: 0033:0x444fe8
[   65.817152][ T6851] Code: Bad RIP value.
[   65.821462][ T6851] RSP: 002b:00007fff4730fdc8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
[   65.829865][ T6851] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000444fe8
[   65.837903][ T6851] RDX: 0000000000000001 RSI: 000000000000003c RDI: 0000000000000001
[   65.846294][ T6851] RBP: 00000000004cce10 R08: 00000000000000e7 R09: ffffffffffffffd0
[   65.854336][ T6851] R10: 00007ff78b70b700 R11: 0000000000000246 R12: 0000000000000001
[   65.862393][ T6851] R13: 00000000006e0200 R14: 00000000015d8850 R15: 0000000000000001