Starting OpenBSD Secure Shell server... Starting System Logging Service... [ OK ] Started Daily apt download activities. [ OK ] Started Daily apt upgrade and clean activities. [ OK ] Reached target Timers. [ OK ] Started Permit User Sessions. [ OK ] Started System Logging Service. [ OK ] Found device /dev/ttyS0. [ OK ] Started OpenBSD Secure Shell server. [ OK ] Started getty on tty2-tty6 if dbus and logind are not available. [ 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 Serial Getty on ttyS0. [ OK ] Started Getty on tty1. [ 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 '10.128.10.9' (ECDSA) to the list of known hosts. syzkaller login: [ 69.878879][ T29] audit: type=1400 audit(1596261933.570:8): avc: denied { execmem } for pid=6851 comm="syz-executor899" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 69.895786][ T6852] IPVS: ftp: loaded support on port[0] = 21 executing program [ 71.018064][ T6852] INFO: trying to register non-static key. [ 71.023898][ T6852] the code is fine but needs lockdep annotation. [ 71.030222][ T6852] turning off the locking correctness validator. [ 71.036564][ T6852] CPU: 0 PID: 6852 Comm: syz-executor899 Not tainted 5.8.0-rc7-syzkaller #0 [ 71.045772][ T6852] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 71.056110][ T6852] Call Trace: [ 71.059412][ T6852] dump_stack+0x18f/0x20d [ 71.063748][ T6852] register_lock_class+0x157d/0x1630 [ 71.069054][ T6852] ? lock_is_held_type+0xb0/0xe0 [ 71.073999][ T6852] ? is_dynamic_key+0x1a0/0x1a0 [ 71.079259][ T6852] ? find_held_lock+0x2d/0x110 [ 71.084095][ T6852] ? try_to_wake_up+0x57e/0x12b0 [ 71.089058][ T6852] __lock_acquire+0xfa/0x56e0 [ 71.094053][ T6852] ? lockdep_hardirqs_off+0x66/0xa0 [ 71.099253][ T6852] ? trace_hardirqs_off+0x27/0x210 [ 71.104455][ T6852] ? _raw_spin_unlock_irqrestore+0x9b/0xe0 [ 71.110243][ T6852] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 71.116213][ T6852] ? find_held_lock+0x2d/0x110 [ 71.120983][ T6852] ? __queue_work+0x653/0xff0 [ 71.125644][ T6852] lock_acquire+0x1f1/0xad0 [ 71.130307][ T6852] ? skb_dequeue+0x1c/0x180 [ 71.134928][ T6852] ? lock_release+0x8d0/0x8d0 [ 71.139898][ T6852] ? mark_lock+0xbc/0x1710 [ 71.144313][ T6852] ? __queue_work+0x675/0xff0 [ 71.148990][ T6852] ? mark_held_locks+0x9f/0xe0 [ 71.153958][ T6852] ? lockdep_hardirqs_off+0x66/0xa0 [ 71.159144][ T6852] _raw_spin_lock_irqsave+0x8c/0xc0 [ 71.164534][ T6852] ? skb_dequeue+0x1c/0x180 [ 71.169066][ T6852] skb_dequeue+0x1c/0x180 [ 71.173639][ T6852] skb_queue_purge+0x21/0x30 [ 71.178245][ T6852] l2cap_chan_del+0x61d/0x1300 [ 71.183592][ T6852] l2cap_conn_del+0x46a/0x9e0 [ 71.188321][ T6852] ? l2cap_conn_del+0x9e0/0x9e0 [ 71.193487][ T6852] l2cap_disconn_cfm+0x85/0xa0 [ 71.198262][ T6852] hci_conn_hash_flush+0x114/0x220 [ 71.203751][ T6852] ? vhci_close_dev+0x50/0x50 [ 71.208512][ T6852] hci_dev_do_close+0x5c6/0x1080 [ 71.213434][ T6852] ? do_raw_write_lock+0x11a/0x280 [ 71.218551][ T6852] ? hci_dev_open+0x350/0x350 [ 71.223224][ T6852] ? do_raw_read_unlock+0x70/0x70 [ 71.228652][ T6852] ? try_to_grab_pending.part.0+0x7d0/0x7d0 [ 71.234625][ T6852] ? fsnotify_parent+0xb7/0x2b0 [ 71.239560][ T6852] ? vhci_close_dev+0x50/0x50 [ 71.244233][ T6852] hci_unregister_dev+0x1a3/0xe20 [ 71.249241][ T6852] ? fcntl_setlk+0xf60/0xf60 [ 71.253811][ T6852] ? lock_is_held_type+0xb0/0xe0 [ 71.258780][ T6852] ? vhci_close_dev+0x50/0x50 [ 71.263459][ T6852] vhci_release+0x70/0xe0 [ 71.267784][ T6852] __fput+0x33c/0x880 [ 71.271750][ T6852] task_work_run+0xdd/0x190 [ 71.276247][ T6852] do_exit+0xb72/0x2a40 [ 71.280557][ T6852] ? mm_update_next_owner+0x7a0/0x7a0 [ 71.285912][ T6852] ? __sb_end_write+0xf8/0x1d0 [ 71.290835][ T6852] ? vfs_write+0x1b0/0x6b0 [ 71.295940][ T6852] ? ksys_write+0x1a5/0x250 [ 71.300625][ T6852] do_group_exit+0x125/0x310 [ 71.305432][ T6852] __x64_sys_exit_group+0x3a/0x50 [ 71.310466][ T6852] do_syscall_64+0x60/0xe0 [ 71.315140][ T6852] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 71.321018][ T6852] RIP: 0033:0x444fe8 [ 71.324884][ T6852] Code: Bad RIP value. [ 71.328961][ T6852] RSP: 002b:00007ffdb4e61848 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 71.337462][ T6852] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000444fe8 [ 71.345723][ T6852] RDX: 0000000000000001 RSI: 000000000000003c RDI: 0000000000000001 [ 71.354089][ T6852] RBP: 00000000004cce10 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 71.362550][ T6852] R10: 00007f8d22e4b700 R11: 0000000000000246 R12: 0000000000000001 [ 71.370551][ T6852] R13: 00000000006e0200 R14: 0000000001e00850 R15: 0000000000000001