[ OK ] Listening on Load/Save RF Kill Switch Status /dev/rfkill Watch. [ OK ] Started Getty on tty6. [ OK ] Started Getty on tty5. [ OK ] Started Getty on tty4. [ OK ] Started Getty on tty3. [ OK ] Started Getty on tty2. [ OK ] Started Getty on tty1. [ OK ] Started Serial Getty on ttyS0. [ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ 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 '10.128.0.139' (ECDSA) to the list of known hosts. syzkaller login: [ 66.784067][ T27] audit: type=1400 audit(1598402480.318:8): avc: denied { execmem } for pid=6853 comm="syz-executor318" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 executing program [ 67.890392][ T6854] IPVS: ftp: loaded support on port[0] = 21 [ 67.961420][ T6854] INFO: trying to register non-static key. [ 67.967240][ T6854] the code is fine but needs lockdep annotation. [ 67.973549][ T6854] turning off the locking correctness validator. [ 67.979867][ T6854] CPU: 0 PID: 6854 Comm: syz-executor318 Not tainted 5.9.0-rc2-syzkaller #0 [ 67.988521][ T6854] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 67.998561][ T6854] Call Trace: [ 68.001845][ T6854] dump_stack+0x18f/0x20d [ 68.006161][ T6854] register_lock_class+0x157d/0x1630 [ 68.011427][ T6854] ? lock_is_held_type+0xbb/0xf0 [ 68.016359][ T6854] ? is_dynamic_key+0x1a0/0x1a0 [ 68.021200][ T6854] ? find_held_lock+0x2d/0x110 [ 68.025942][ T6854] ? try_to_wake_up+0x57e/0x12b0 [ 68.030856][ T6854] __lock_acquire+0xf9/0x5640 [ 68.035510][ T6854] ? lockdep_hardirqs_off+0x89/0xc0 [ 68.041464][ T6854] ? trace_hardirqs_off+0x27/0x210 [ 68.046551][ T6854] ? __queue_work+0x61a/0xf20 [ 68.051216][ T6854] ? preempt_schedule_notrace_thunk+0x16/0x31 [ 68.057258][ T6854] ? lockdep_hardirqs_on_prepare+0x530/0x530 [ 68.063219][ T6854] ? find_held_lock+0x2d/0x110 [ 68.067980][ T6854] ? __queue_work+0x61a/0xf20 [ 68.072634][ T6854] lock_acquire+0x1f1/0xad0 [ 68.077115][ T6854] ? skb_dequeue+0x1c/0x180 [ 68.081595][ T6854] ? lock_release+0x8e0/0x8e0 [ 68.086247][ T6854] ? mark_lock+0xbc/0x1710 [ 68.090639][ T6854] ? __queue_work+0x63c/0xf20 [ 68.095290][ T6854] ? mark_held_locks+0x9f/0xe0 [ 68.100027][ T6854] _raw_spin_lock_irqsave+0x8c/0xc0 [ 68.105202][ T6854] ? skb_dequeue+0x1c/0x180 [ 68.109689][ T6854] skb_dequeue+0x1c/0x180 [ 68.113994][ T6854] skb_queue_purge+0x21/0x30 [ 68.118558][ T6854] l2cap_chan_del+0x61d/0x1300 [ 68.123307][ T6854] l2cap_conn_del+0x46a/0x9e0 [ 68.127962][ T6854] ? l2cap_conn_del+0x9e0/0x9e0 [ 68.132787][ T6854] l2cap_disconn_cfm+0x85/0xa0 [ 68.137530][ T6854] hci_conn_hash_flush+0x114/0x220 [ 68.142622][ T6854] hci_dev_do_close+0x5c6/0x1080 [ 68.147549][ T6854] ? hci_dev_open+0x350/0x350 [ 68.152203][ T6854] ? do_raw_read_unlock+0x70/0x70 [ 68.157207][ T6854] ? try_to_grab_pending.part.0+0x7d0/0x7d0 [ 68.163078][ T6854] hci_unregister_dev+0x1bd/0xe30 [ 68.168076][ T6854] ? fcntl_setlk+0xf60/0xf60 [ 68.172643][ T6854] ? lock_is_held_type+0xbb/0xf0 [ 68.177555][ T6854] vhci_release+0x70/0xe0 [ 68.181858][ T6854] __fput+0x285/0x920 [ 68.185818][ T6854] ? vhci_close_dev+0x50/0x50 [ 68.190476][ T6854] task_work_run+0xdd/0x190 [ 68.194956][ T6854] do_exit+0xb7d/0x29f0 [ 68.199086][ T6854] ? __mutex_unlock_slowpath+0xe2/0x610 [ 68.204604][ T6854] ? mm_update_next_owner+0x7a0/0x7a0 [ 68.209951][ T6854] ? lock_is_held_type+0xbb/0xf0 [ 68.214868][ T6854] ? lock_is_held_type+0xbb/0xf0 [ 68.219778][ T6854] do_group_exit+0x125/0x310 [ 68.224349][ T6854] __x64_sys_exit_group+0x3a/0x50 [ 68.229347][ T6854] do_syscall_64+0x2d/0x70 [ 68.233739][ T6854] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 68.239603][ T6854] RIP: 0033:0x445068 [ 68.243465][ T6854] Code: Bad RIP value. [ 68.247503][ T6854] RSP: 002b:00007ffdc3b4f4a8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 68.255888][ T6854] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 000000