[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.207' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 60.265081][ T7064] IPVS: ftp: loaded support on port[0] = 21 [ 60.578084][ T5] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 60.817971][ T5] usb 1-1: Using ep0 maxpacket: 8 [ 60.938431][ T5] usb 1-1: config 0 has too many interfaces: 65, using maximum allowed: 32 [ 60.947336][ T5] usb 1-1: config 0 has an invalid descriptor of length 0, skipping remainder of the config [ 60.957493][ T5] usb 1-1: config 0 has 1 interface, different from the descriptor's value: 65 [ 60.967496][ T5] usb 1-1: New USB device found, idVendor=0bd3, idProduct=0555, bcdDevice=69.6a [ 60.976574][ T5] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 60.986609][ T5] usb 1-1: config 0 descriptor?? [ 61.268021][ T5] usb 1-1: string descriptor 0 read error: -71 [ 61.274502][ T5] uvcvideo: Found UVC 0.00 device (0bd3:0555) [ 61.287534][ T5] uvcvideo 1-1:0.0: Entity type for entity Output 1 was not initialized! [ 61.297181][ T5] ------------[ cut here ]------------ [ 61.302725][ T5] WARNING: CPU: 0 PID: 5 at drivers/media/mc/mc-entity.c:666 media_create_pad_link+0x4e2/0x650 [ 61.313022][ T5] Kernel panic - not syncing: panic_on_warn set ... [ 61.319759][ T5] CPU: 0 PID: 5 Comm: kworker/0:0 Not tainted 5.7.0-rc7-syzkaller #0 [ 61.327797][ T5] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.337942][ T5] Workqueue: usb_hub_wq hub_event [ 61.342938][ T5] Call Trace: [ 61.346208][ T5] dump_stack+0x188/0x20d [ 61.350535][ T5] ? media_create_pad_link+0x3f0/0x650 [ 61.355987][ T5] panic+0x2e3/0x75c [ 61.359880][ T5] ? add_taint.cold+0x16/0x16 [ 61.364535][ T5] ? printk+0xba/0xed [ 61.368494][ T5] ? kmsg_dump_rewind_nolock+0xd9/0xd9 [ 61.373926][ T5] ? __warn.cold+0x14/0x35 [ 61.378316][ T5] ? __warn+0xd5/0x1c8 [ 61.382361][ T5] ? media_create_pad_link+0x4e2/0x650 [ 61.387804][ T5] __warn.cold+0x2f/0x35 [ 61.392038][ T5] ? media_create_pad_link+0x4e2/0x650 [ 61.397471][ T5] report_bug+0x27b/0x2f0 [ 61.401778][ T5] do_error_trap+0x12b/0x220 [ 61.406357][ T5] ? media_create_pad_link+0x4e2/0x650 [ 61.411799][ T5] do_invalid_op+0x32/0x40 [ 61.416196][ T5] ? media_create_pad_link+0x4e2/0x650 [ 61.421630][ T5] invalid_op+0x23/0x30 [ 61.425760][ T5] RIP: 0010:media_create_pad_link+0x4e2/0x650 [ 61.431800][ T5] Code: 04 b3 31 fc 44 89 e0 48 83 c4 20 5b 5d 41 5c 41 5d 41 5e 41 5f c3 e8 ed b2 31 fc 0f 0b 41 bc ea ff ff ff eb da e8 de b2 31 fc <0f> 0b 41 bc ea ff ff ff eb cb e8 cf b2 31 fc 0f 0b 41 bc ea ff ff [ 61.451382][ T5] RSP: 0018:ffffc90000cbef70 EFLAGS: 00010293 [ 61.457422][ T5] RAX: ffff8880a9598140 RBX: ffff8880a97d3070 RCX: ffffffff8541888e [ 61.465371][ T5] RDX: 0000000000000000 RSI: ffffffff85418cf2 RDI: 0000000000000002 [ 61.473407][ T5] RBP: ffff8880a2678870 R08: ffff8880a9598140 R09: ffffed1013c0ca98 [ 61.481353][ T5] R10: ffff88809e0654bb R11: ffffed1013c0ca97 R12: 0000000000000001 [ 61.489324][ T5] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000000 [ 61.497283][ T5] ? media_create_pad_link+0x7e/0x650 [ 61.502696][ T5] ? media_create_pad_link+0x4e2/0x650 [ 61.508155][ T5] ? v4l2_device_register_subdev+0x422/0x640 [ 61.514170][ T5] uvc_mc_register_entities+0x468/0x77a [ 61.519702][ T5] uvc_probe.cold+0x23c9/0x2a44 [ 61.524578][ T5] ? __pm_runtime_set_status+0x702/0xa10 [ 61.530193][ T5] ? lock_acquire+0x1f2/0x8f0 [ 61.534937][ T5] ? pm_runtime_enable+0x2a/0x310 [ 61.539940][ T5] ? mark_lock+0x12b/0xf10 [ 61.544334][ T5] ? print_usage_bug+0x240/0x240 [ 61.549250][ T5] ? rwlock_bug.part.0+0x90/0x90 [ 61.554166][ T5] ? mark_held_locks+0x9f/0xe0 [ 61.558928][ T5] ? usb_probe_interface+0x305/0x7a0 [ 61.564184][ T5] usb_probe_interface+0x305/0x7a0 [ 61.569280][ T5] ? usb_probe_device+0x1f0/0x1f0 [ 61.574294][ T5] really_probe+0x281/0x6d0 [ 61.578792][ T5] driver_probe_device+0x104/0x210 [ 61.583895][ T5] __device_attach_driver+0x1c2/0x220 [ 61.589263][ T5] ? driver_allows_async_probing+0x170/0x170 [ 61.595214][ T5] bus_for_each_drv+0x162/0x1e0 [ 61.600059][ T5] ? bus_rescan_devices+0x20/0x20 [ 61.605145][ T5] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 61.610927][ T5] ? lockdep_hardirqs_on+0x463/0x620 [ 61.616186][ T5] ? _raw_spin_unlock_irqrestore+0x9b/0xe0 [ 61.621967][ T5] __device_attach+0x21a/0x360 [ 61.626706][ T5] ? device_bind_driver+0xd0/0xd0 [ 61.632413][ T5] bus_probe_device+0x1e4/0x290 [ 61.637258][ T5] device_add+0x132d/0x1c10 [ 61.641738][ T5] ? wait_for_completion+0x270/0x270 [ 61.647003][ T5] ? uevent_show+0x360/0x360 [ 61.651569][ T5] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 61.657357][ T5] usb_set_configuration+0xec5/0x1740 [ 61.662740][ T5] usb_generic_driver_probe+0x9d/0xe0 [ 61.668096][ T5] usb_probe_device+0xc6/0x1f0 [ 61.672921][ T5] ? usb_suspend+0x630/0x630 [ 61.677486][ T5] really_probe+0x281/0x6d0 [ 61.682052][ T5] driver_probe_device+0x104/0x210 [ 61.687142][ T5] __device_attach_driver+0x1c2/0x220 [ 61.692489][ T5] ? driver_allows_async_probing+0x170/0x170 [ 61.698440][ T5] bus_for_each_drv+0x162/0x1e0 [ 61.703268][ T5] ? bus_rescan_devices+0x20/0x20 [ 61.708285][ T5] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 61.714067][ T5] ? lockdep_hardirqs_on+0x463/0x620 [ 61.719327][ T5] ? _raw_spin_unlock_irqrestore+0x9b/0xe0 [ 61.725139][ T5] __device_attach+0x21a/0x360 [ 61.729902][ T5] ? device_bind_driver+0xd0/0xd0 [ 61.734912][ T5] bus_probe_device+0x1e4/0x290 [ 61.739741][ T5] device_add+0x132d/0x1c10 [ 61.744243][ T5] ? uevent_show+0x360/0x360 [ 61.749163][ T5] usb_new_device.cold+0x701/0xfcf [ 61.754272][ T5] ? hub_disconnect+0x4a0/0x4a0 [ 61.759099][ T5] ? mark_held_locks+0x9f/0xe0 [ 61.763856][ T5] ? _raw_spin_unlock_irq+0x1f/0x80 [ 61.769034][ T5] hub_event+0x1eca/0x38f0 [ 61.773470][ T5] ? hub_port_debounce+0x260/0x260 [ 61.778556][ T5] ? perf_trace_workqueue_execute_end+0x181/0x420 [ 61.784969][ T5] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 61.790490][ T5] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 61.796467][ T5] ? _raw_spin_unlock_irq+0x1f/0x80 [ 61.801670][ T5] process_one_work+0x965/0x16a0 [ 61.806588][ T5] ? lock_release+0x800/0x800 [ 61.811240][ T5] ? pwq_dec_nr_in_flight+0x310/0x310 [ 61.816612][ T5] ? rwlock_bug.part.0+0x90/0x90 [ 61.821530][ T5] worker_thread+0x96/0xe20 [ 61.826015][ T5] ? process_one_work+0x16a0/0x16a0 [ 61.831188][ T5] kthread+0x388/0x470 [ 61.835234][ T5] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 61.840929][ T5] ret_from_fork+0x24/0x30 [ 61.846804][ T5] Kernel Offset: disabled [ 61.851196][ T5] Rebooting in 86400 seconds..