Starting Permit User Sessions... Starting getty on tty2-tty6 if dbus and logind are not available... [ OK ] Started Daily Cleanup of Temporary Directories. [ OK ] Reached target Timers. [ OK ] Started Regular background program processing daemon. [ OK ] Started System Logging Service. [ OK ] Started Permit User Sessions. [ 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 '10.128.0.129' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 68.076380][ T29] audit: type=1400 audit(1590096679.181:8): avc: denied { execmem } for pid=7055 comm="syz-executor413" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 68.344552][ T2724] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 68.584497][ T2724] usb 1-1: Using ep0 maxpacket: 8 [ 68.704552][ T2724] usb 1-1: config 0 has an invalid descriptor of length 36, skipping remainder of the config [ 68.716121][ T2724] usb 1-1: New USB device found, idVendor=0bd3, idProduct=0555, bcdDevice=69.6a [ 68.725415][ T2724] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 68.737492][ T2724] usb 1-1: config 0 descriptor?? [ 69.214516][ T2724] uvcvideo: Found UVC 0.00 device (0bd3:0555) [ 69.221799][ T2724] uvcvideo 1-1:0.0: Entity type for entity Й was not initialized! [ 69.230181][ T2724] uvcvideo 1-1:0.0: Entity type for entity Processing 1 was not initialized! [ 69.239206][ T2724] uvcvideo 1-1:0.0: Entity type for entity Input 255 was not initialized! [ 69.248245][ T2724] ------------[ cut here ]------------ [ 69.253713][ T2724] WARNING: CPU: 0 PID: 2724 at drivers/media/mc/mc-entity.c:669 media_create_pad_link+0x500/0x650 [ 69.264359][ T2724] Kernel panic - not syncing: panic_on_warn set ... [ 69.271070][ T2724] CPU: 0 PID: 2724 Comm: kworker/0:3 Not tainted 5.7.0-rc6-syzkaller #0 [ 69.280258][ T2724] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 69.290680][ T2724] Workqueue: usb_hub_wq hub_event [ 69.295695][ T2724] Call Trace: [ 69.299114][ T2724] dump_stack+0x188/0x20d [ 69.303797][ T2724] ? media_create_pad_link+0x410/0x650 [ 69.309632][ T2724] panic+0x2e3/0x75c [ 69.313656][ T2724] ? add_taint.cold+0x16/0x16 [ 69.318590][ T2724] ? printk+0xba/0xed [ 69.322582][ T2724] ? kmsg_dump_rewind_nolock+0xd9/0xd9 [ 69.328058][ T2724] ? __warn.cold+0x14/0x35 [ 69.332485][ T2724] ? __warn+0xd5/0x1c8 [ 69.336722][ T2724] ? media_create_pad_link+0x500/0x650 [ 69.342164][ T2724] __warn.cold+0x2f/0x35 [ 69.346407][ T2724] ? media_create_pad_link+0x500/0x650 [ 69.351845][ T2724] report_bug+0x27b/0x2f0 [ 69.356165][ T2724] do_error_trap+0x12b/0x220 [ 69.361183][ T2724] ? media_create_pad_link+0x500/0x650 [ 69.366652][ T2724] do_invalid_op+0x32/0x40 [ 69.371058][ T2724] ? media_create_pad_link+0x500/0x650 [ 69.376591][ T2724] invalid_op+0x23/0x30 [ 69.380738][ T2724] RIP: 0010:media_create_pad_link+0x500/0x650 [ 69.386792][ T2724] Code: bc ea ff ff ff eb da e8 4e 77 31 fc 0f 0b 41 bc ea ff ff ff eb cb e8 3f 77 31 fc 0f 0b 41 bc ea ff ff ff eb bc e8 30 77 31 fc <0f> 0b 41 bc ea ff ff ff eb ad e8 21 77 31 fc 0f 0b 41 bc ea ff ff [ 69.406602][ T2724] RSP: 0018:ffffc90008166f70 EFLAGS: 00010293 [ 69.412696][ T2724] RAX: ffff88809fe1c000 RBX: ffff88809fff4870 RCX: ffffffff8541ba20 [ 69.420663][ T2724] RDX: 0000000000000000 RSI: ffffffff8541bdf0 RDI: 0000000000000007 [ 69.429900][ T2724] RBP: ffff88809fff4870 R08: ffff88809fe1c000 R09: ffffed1014c8ca98 [ 69.437933][ T2724] R10: ffff8880a64654bb R11: ffffed1014c8ca97 R12: 0000000000000000 [ 69.446100][ T2724] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001 [ 69.454093][ T2724] ? media_create_pad_link+0x130/0x650 [ 69.459631][ T2724] ? media_create_pad_link+0x500/0x650 [ 69.465077][ T2724] uvc_mc_register_entities+0x468/0x77a [ 69.470607][ T2724] uvc_probe.cold+0x23c9/0x2a44 [ 69.475525][ T2724] ? __pm_runtime_set_status+0x702/0xa10 [ 69.481773][ T2724] ? lock_acquire+0x1f2/0x8f0 [ 69.486887][ T2724] ? pm_runtime_enable+0x2a/0x310 [ 69.491930][ T2724] ? mark_lock+0x12b/0xf10 [ 69.496655][ T2724] ? print_usage_bug+0x240/0x240 [ 69.502029][ T2724] ? rwlock_bug.part.0+0x90/0x90 [ 69.507061][ T2724] ? mark_held_locks+0x9f/0xe0 [ 69.511910][ T2724] ? usb_probe_interface+0x305/0x7a0 [ 69.517195][ T2724] usb_probe_interface+0x305/0x7a0 [ 69.522729][ T2724] ? usb_probe_device+0x1f0/0x1f0 [ 69.527748][ T2724] really_probe+0x281/0x6d0 [ 69.532342][ T2724] driver_probe_device+0x104/0x210 [ 69.537435][ T2724] __device_attach_driver+0x1c2/0x220 [ 69.543795][ T2724] ? driver_allows_async_probing+0x170/0x170 [ 69.549766][ T2724] bus_for_each_drv+0x162/0x1e0 [ 69.554778][ T2724] ? bus_rescan_devices+0x20/0x20 [ 69.559886][ T2724] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 69.565700][ T2724] ? lockdep_hardirqs_on+0x463/0x620 [ 69.571051][ T2724] ? _raw_spin_unlock_irqrestore+0x9b/0xe0 [ 69.576853][ T2724] __device_attach+0x21a/0x360 [ 69.581610][ T2724] ? device_bind_driver+0xd0/0xd0 [ 69.586649][ T2724] bus_probe_device+0x1e4/0x290 [ 69.591509][ T2724] device_add+0x132d/0x1c10 [ 69.596018][ T2724] ? wait_for_completion+0x270/0x270 [ 69.601386][ T2724] ? uevent_show+0x360/0x360 [ 69.606245][ T2724] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 69.612075][ T2724] usb_set_configuration+0xec5/0x1740 [ 69.617450][ T2724] usb_generic_driver_probe+0x9d/0xe0 [ 69.622818][ T2724] usb_probe_device+0xc6/0x1f0 [ 69.628025][ T2724] ? usb_suspend+0x630/0x630 [ 69.632604][ T2724] really_probe+0x281/0x6d0 [ 69.637093][ T2724] driver_probe_device+0x104/0x210 [ 69.642269][ T2724] __device_attach_driver+0x1c2/0x220 [ 69.647621][ T2724] ? driver_allows_async_probing+0x170/0x170 [ 69.651172][ T7063] udc-core: couldn't find an available UDC or it's busy [ 69.653602][ T2724] bus_for_each_drv+0x162/0x1e0 [ 69.660627][ T7063] misc raw-gadget: fail, usb_gadget_probe_driver returned -16 [ 69.665490][ T2724] ? bus_rescan_devices+0x20/0x20 [ 69.665513][ T2724] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 69.683927][ T2724] ? lockdep_hardirqs_on+0x463/0x620 [ 69.689229][ T2724] ? _raw_spin_unlock_irqrestore+0x9b/0xe0 [ 69.695252][ T2724] __device_attach+0x21a/0x360 [ 69.700025][ T2724] ? device_bind_driver+0xd0/0xd0 [ 69.705214][ T2724] bus_probe_device+0x1e4/0x290 [ 69.710864][ T2724] device_add+0x132d/0x1c10 [ 69.716070][ T2724] ? uevent_show+0x360/0x360 [ 69.720666][ T2724] usb_new_device.cold+0x701/0xfcf [ 69.726072][ T2724] ? hub_disconnect+0x4a0/0x4a0 [ 69.730974][ T2724] ? mark_held_locks+0x9f/0xe0 [ 69.735876][ T2724] ? _raw_spin_unlock_irq+0x1f/0x80 [ 69.741275][ T2724] hub_event+0x1eca/0x38f0 [ 69.745731][ T2724] ? hub_port_debounce+0x260/0x260 [ 69.751624][ T2724] ? perf_trace_workqueue_execute_end+0x201/0x420 [ 69.758124][ T2724] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 69.763695][ T2724] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 69.769693][ T2724] ? _raw_spin_unlock_irq+0x1f/0x80 [ 69.774926][ T2724] process_one_work+0x965/0x16a0 [ 69.780825][ T2724] ? lock_release+0x800/0x800 [ 69.785685][ T2724] ? pwq_dec_nr_in_flight+0x310/0x310 [ 69.791195][ T2724] ? rwlock_bug.part.0+0x90/0x90 [ 69.796126][ T2724] worker_thread+0x96/0xe20 [ 69.800618][ T2724] ? process_one_work+0x16a0/0x16a0 [ 69.805811][ T2724] kthread+0x388/0x470 [ 69.809884][ T2724] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 69.815626][ T2724] ret_from_fork+0x24/0x30 [ 69.821774][ T2724] Kernel Offset: disabled [ 69.826186][ T2724] Rebooting in 86400 seconds..