Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.209' (ECDSA) to the list of known hosts. syzkaller login: [ 60.875783][ T6857] IPVS: ftp: loaded support on port[0] = 21 executing program [ 61.019312][ T6857] INFO: trying to register non-static key. [ 61.025140][ T6857] the code is fine but needs lockdep annotation. [ 61.031464][ T6857] turning off the locking correctness validator. [ 61.037774][ T6857] CPU: 0 PID: 6857 Comm: syz-executor217 Not tainted 5.9.0-rc4-syzkaller #0 [ 61.046420][ T6857] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.056468][ T6857] Call Trace: [ 61.059743][ T6857] dump_stack+0x198/0x1fd [ 61.064057][ T6857] register_lock_class+0x157d/0x1630 [ 61.069329][ T6857] ? lock_is_held_type+0xbb/0xf0 [ 61.074257][ T6857] ? lock_is_held_type+0xbb/0xf0 [ 61.079221][ T6857] ? is_dynamic_key+0x1a0/0x1a0 [ 61.084049][ T6857] ? try_to_wake_up+0x57e/0x12b0 [ 61.088963][ T6857] __lock_acquire+0xf9/0x5570 [ 61.094053][ T6857] ? lockdep_hardirqs_on_prepare+0x530/0x530 [ 61.100018][ T6857] ? mark_lock+0xbc/0x1710 [ 61.104415][ T6857] lock_acquire+0x1f3/0xae0 [ 61.108908][ T6857] ? skb_dequeue+0x1c/0x180 [ 61.113532][ T6857] ? check_preemption_disabled+0x50/0x130 [ 61.119269][ T6857] ? lock_release+0x8f0/0x8f0 [ 61.123961][ T6857] ? lockdep_hardirqs_on+0x53/0x100 [ 61.129151][ T6857] ? asm_sysvec_call_function_single+0x12/0x20 [ 61.135284][ T6857] ? check_preemption_disabled+0x50/0x130 [ 61.140987][ T6857] ? _raw_spin_lock_irqsave+0xa9/0xce [ 61.146347][ T6857] ? lockdep_hardirqs_off+0x96/0xd0 [ 61.151525][ T6857] _raw_spin_lock_irqsave+0x94/0xce [ 61.156696][ T6857] ? skb_dequeue+0x1c/0x180 [ 61.161178][ T6857] skb_dequeue+0x1c/0x180 [ 61.165482][ T6857] skb_queue_purge+0x21/0x30 [ 61.170056][ T6857] l2cap_chan_del+0x61d/0x1300 [ 61.174793][ T6857] l2cap_conn_del+0x46a/0x9e0 [ 61.179454][ T6857] ? l2cap_conn_del+0x9e0/0x9e0 [ 61.184286][ T6857] l2cap_disconn_cfm+0x85/0xa0 [ 61.189036][ T6857] hci_conn_hash_flush+0x114/0x220 [ 61.194126][ T6857] hci_dev_do_close+0x5c6/0x1080 [ 61.199034][ T6857] ? hci_dev_open+0x350/0x350 [ 61.203707][ T6857] ? do_raw_read_unlock+0x70/0x70 [ 61.208719][ T6857] ? try_to_grab_pending.part.0+0x770/0x770 [ 61.214585][ T6857] hci_unregister_dev+0x1bd/0xe30 [ 61.219587][ T6857] ? fcntl_setlk+0xf60/0xf60 [ 61.224165][ T6857] ? lock_is_held_type+0xbb/0xf0 [ 61.229086][ T6857] vhci_release+0x70/0xe0 [ 61.233397][ T6857] __fput+0x285/0x920 [ 61.237368][ T6857] ? vhci_close_dev+0x50/0x50 [ 61.242028][ T6857] task_work_run+0xdd/0x190 [ 61.246512][ T6857] do_exit+0xb7d/0x29f0 [ 61.250646][ T6857] ? mm_update_next_owner+0x7a0/0x7a0 [ 61.255990][ T6857] ? __sb_end_write+0xf8/0x1d0 [ 61.260726][ T6857] ? vfs_write+0x1b0/0x730 [ 61.265130][ T6857] ? lock_is_held_type+0xbb/0xf0 [ 61.270045][ T6857] do_group_exit+0x125/0x310 [ 61.274734][ T6857] __x64_sys_exit_group+0x3a/0x50 [ 61.279765][ T6857] do_syscall_64+0x2d/0x70 [ 61.284157][ T6857] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 61.290033][ T6857] RIP: 0033:0x445068 [ 61.293893][ T6857] Code: Bad RIP value. [ 61.297930][ T6857] RSP: 002b:00007ffc16e66e18 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 61.306310][ T6857] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000445068 [ 61.314255][ T6857] RDX: 0000000000000001 RSI: 000000000000003c RDI: 00