Starting OpenBSD Secure Shell server... Starting System Logging Service... [ OK ] Started Regular background program processing daemon. Starting getty on tty2-tty6 if dbus and logind are not available... Starting Permit User Sessions... [ OK ] Started System Logging Service. [ OK ] Found device /dev/ttyS0. [ OK ] Started Permit User Sessions. [ 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 tty1. [ OK ] Started Getty on tty2. [ 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. Warning: Permanently added '10.128.0.218' (ECDSA) to the list of known hosts. [ 69.170560][ T26] audit: type=1400 audit(1598652942.750:8): avc: denied { execmem } for pid=6846 comm="syz-executor538" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 Debian GNU/Linux 9 syzkaller ttyS0 syzkaller login: [ 70.296274][ T6847] IPVS: ftp: loaded support on port[0] = 21 executing program [ 70.400226][ T6847] INFO: trying to register non-static key. [ 70.406093][ T6847] the code is fine but needs lockdep annotation. [ 70.412389][ T6847] turning off the locking correctness validator. [ 70.418688][ T6847] CPU: 1 PID: 6847 Comm: syz-executor538 Not tainted 5.9.0-rc2-syzkaller #0 [ 70.427343][ T6847] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 70.437378][ T6847] Call Trace: [ 70.440716][ T6847] dump_stack+0x18f/0x20d [ 70.445129][ T6847] register_lock_class+0x157d/0x1630 [ 70.450407][ T6847] ? lock_is_held_type+0xbb/0xf0 [ 70.455323][ T6847] ? is_dynamic_key+0x1a0/0x1a0 [ 70.460145][ T6847] ? find_held_lock+0x2d/0x110 [ 70.465522][ T6847] ? try_to_wake_up+0x57e/0x12b0 [ 70.470458][ T6847] __lock_acquire+0xf9/0x5640 [ 70.475132][ T6847] ? lockdep_hardirqs_off+0x89/0xc0 [ 70.480308][ T6847] ? trace_hardirqs_off+0x27/0x210 [ 70.485412][ T6847] ? _raw_spin_unlock_irqrestore+0x9b/0xe0 [ 70.491215][ T6847] ? lockdep_hardirqs_on_prepare+0x530/0x530 [ 70.497178][ T6847] ? find_held_lock+0x2d/0x110 [ 70.501944][ T6847] ? __queue_work+0x61a/0xf20 [ 70.506611][ T6847] lock_acquire+0x1f1/0xad0 [ 70.511093][ T6847] ? skb_dequeue+0x1c/0x180 [ 70.515606][ T6847] ? lock_release+0x8e0/0x8e0 [ 70.520536][ T6847] ? mark_lock+0xbc/0x1710 [ 70.524935][ T6847] ? __queue_work+0x63c/0xf20 [ 70.529598][ T6847] ? mark_held_locks+0x9f/0xe0 [ 70.534343][ T6847] _raw_spin_lock_irqsave+0x8c/0xc0 [ 70.539544][ T6847] ? skb_dequeue+0x1c/0x180 [ 70.544027][ T6847] skb_dequeue+0x1c/0x180 [ 70.548332][ T6847] skb_queue_purge+0x21/0x30 [ 70.552912][ T6847] l2cap_chan_del+0x61d/0x1300 [ 70.557667][ T6847] l2cap_conn_del+0x46a/0x9e0 [ 70.562343][ T6847] ? l2cap_conn_del+0x9e0/0x9e0 [ 70.567186][ T6847] l2cap_disconn_cfm+0x85/0xa0 [ 70.571946][ T6847] hci_conn_hash_flush+0x114/0x220 [ 70.583064][ T6847] hci_dev_do_close+0x5c6/0x1080 [ 70.587984][ T6847] ? hci_dev_open+0x350/0x350 [ 70.592639][ T6847] ? do_raw_read_unlock+0x70/0x70 [ 70.597835][ T6847] ? try_to_grab_pending.part.0+0x7d0/0x7d0 [ 70.603725][ T6847] hci_unregister_dev+0x1bd/0xe30 [ 70.608726][ T6847] ? fcntl_setlk+0xf60/0xf60 [ 70.613292][ T6847] ? lock_is_held_type+0xbb/0xf0 [ 70.618206][ T6847] vhci_release+0x70/0xe0 [ 70.622570][ T6847] __fput+0x285/0x920 [ 70.626535][ T6847] ? vhci_close_dev+0x50/0x50 [ 70.631199][ T6847] task_work_run+0xdd/0x190 [ 70.635681][ T6847] do_exit+0xb7d/0x29f0 [ 70.639810][ T6847] ? mm_update_next_owner+0x7a0/0x7a0 [ 70.645155][ T6847] ? __sb_end_write+0xf8/0x1d0 [ 70.649892][ T6847] ? vfs_write+0x1b0/0x730 [ 70.654285][ T6847] ? lock_is_held_type+0xbb/0xf0 [ 70.659208][ T6847] do_group_exit+0x125/0x310 [ 70.663789][ T6847] __x64_sys_exit_group+0x3a/0x50 [ 70.668793][ T6847] do_syscall_64+0x2d/0x70 [ 70.673185][ T6847] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 70.679068][ T6847] RIP: 0033:0x445068 [ 70.682935][ T6847] Code: Bad RIP value. [ 70.686984][ T6847] RSP: 002b:00007ffe95cbcdc8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 70.695372][ T6847] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0