Warning: Permanently added '10.128.0.178' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 63.687927][ T6834] IPVS: ftp: loaded support on port[0] = 21 [ 64.006427][ T2475] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 64.246866][ T2475] usb 1-1: Using ep0 maxpacket: 8 [ 64.366475][ T2475] usb 1-1: config 0 has too many interfaces: 65, using maximum allowed: 32 [ 64.375189][ T2475] usb 1-1: config 0 has an invalid descriptor of length 0, skipping remainder of the config [ 64.386687][ T2475] usb 1-1: config 0 has 1 interface, different from the descriptor's value: 65 [ 64.395675][ T2475] usb 1-1: New USB device found, idVendor=0bd3, idProduct=0555, bcdDevice=69.6a [ 64.405851][ T2475] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 64.417675][ T2475] usb 1-1: config 0 descriptor?? [ 64.696370][ T2475] usb 1-1: string descriptor 0 read error: -71 [ 64.702785][ T2475] uvcvideo: Found UVC 0.00 device (0bd3:0555) [ 64.712082][ T2475] uvcvideo 1-1:0.0: Entity type for entity Output 1 was not initialized! [ 64.722971][ T2475] ------------[ cut here ]------------ [ 64.728467][ T2475] WARNING: CPU: 1 PID: 2475 at drivers/media/mc/mc-entity.c:666 media_create_pad_link+0x4e2/0x650 [ 64.739042][ T2475] Kernel panic - not syncing: panic_on_warn set ... [ 64.745626][ T2475] CPU: 1 PID: 2475 Comm: kworker/1:2 Not tainted 5.7.0-rc7-next-20200528-syzkaller #0 [ 64.755157][ T2475] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 64.765203][ T2475] Workqueue: usb_hub_wq hub_event [ 64.770201][ T2475] Call Trace: [ 64.773475][ T2475] dump_stack+0x18f/0x20d [ 64.777805][ T2475] ? media_create_pad_link+0x400/0x650 [ 64.783241][ T2475] panic+0x2e3/0x75c [ 64.787115][ T2475] ? __warn_printk+0xf3/0xf3 [ 64.791790][ T2475] ? printk+0xba/0xed [ 64.795749][ T2475] ? log_store.cold+0x16/0x16 [ 64.800422][ T2475] ? __warn.cold+0x14/0x3a [ 64.804832][ T2475] ? __warn+0xd6/0x1b2 [ 64.808902][ T2475] ? media_create_pad_link+0x4e2/0x650 [ 64.814364][ T2475] __warn.cold+0x2f/0x3a [ 64.818612][ T2475] ? media_create_pad_link+0x4e2/0x650 [ 64.824071][ T2475] report_bug+0x27b/0x2f0 [ 64.828406][ T2475] do_error_trap+0x153/0x2b0 [ 64.832983][ T2475] ? media_create_pad_link+0x4e2/0x650 [ 64.838441][ T2475] exc_invalid_op+0x34/0x40 [ 64.843015][ T2475] ? media_create_pad_link+0x4e2/0x650 [ 64.848467][ T2475] asm_exc_invalid_op+0x14/0x20 [ 64.853310][ T2475] RIP: 0010:media_create_pad_link+0x4e2/0x650 [ 64.859367][ T2475] Code: 54 6e 2a fc 44 89 e0 48 83 c4 20 5b 5d 41 5c 41 5d 41 5e 41 5f c3 e8 3d 6e 2a fc 0f 0b 41 bc ea ff ff ff eb da e8 2e 6e 2a fc <0f> 0b 41 bc ea ff ff ff eb cb e8 1f 6e 2a fc 0f 0b 41 bc ea ff ff [ 64.878960][ T2475] RSP: 0018:ffffc9000813efe8 EFLAGS: 00010293 [ 64.885022][ T2475] RAX: ffff8880a0774100 RBX: ffff8880a601c870 RCX: ffffffff8548757e [ 64.892973][ T2475] RDX: 0000000000000000 RSI: ffffffff854879e2 RDI: 0000000000000002 [ 64.900925][ T2475] RBP: ffff8880a79c7870 R08: ffff8880a0774100 R09: ffffed1014fc5098 [ 64.908894][ T2475] R10: ffff8880a7e284bb R11: ffffed1014fc5097 R12: 0000000000000001 [ 64.916858][ T2475] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000000 [ 64.924840][ T2475] ? media_create_pad_link+0x7e/0x650 [ 64.930214][ T2475] ? media_create_pad_link+0x4e2/0x650 [ 64.935682][ T2475] ? media_create_pad_link+0x4e2/0x650 [ 64.941147][ T2475] ? v4l2_device_register_subdev+0x422/0x640 [ 64.947120][ T2475] uvc_mc_register_entities+0x468/0x77a [ 64.952682][ T2475] uvc_probe.cold+0x2027/0x29e1 [ 64.957545][ T2475] ? mark_lock+0x11f/0xdd0 [ 64.962176][ T2475] ? mark_held_locks+0x9f/0xe0 [ 64.966939][ T2475] usb_probe_interface+0x305/0x7a0 [ 64.972175][ T2475] ? usb_probe_device+0x1f0/0x1f0 [ 64.977338][ T2475] really_probe+0x281/0x6d0 [ 64.981829][ T2475] driver_probe_device+0xfe/0x1d0 [ 64.986841][ T2475] __device_attach_driver+0x1c2/0x220 [ 64.992228][ T2475] ? driver_allows_async_probing+0x170/0x170 [ 64.998715][ T2475] bus_for_each_drv+0x162/0x1e0 [ 65.003638][ T2475] ? bus_rescan_devices+0x20/0x20 [ 65.008651][ T2475] ? _raw_spin_unlock_irqrestore+0x9b/0xe0 [ 65.014476][ T2475] __device_attach+0x21a/0x360 [ 65.019244][ T2475] ? device_bind_driver+0xd0/0xd0 [ 65.024265][ T2475] ? kfree+0x285/0x2b0 [ 65.028350][ T2475] ? kobject_uevent_env+0x2aa/0x12e0 [ 65.033716][ T2475] bus_probe_device+0x1e4/0x290 [ 65.038569][ T2475] device_add+0xaf1/0x1900 [ 65.042967][ T2475] ? uevent_show+0x360/0x360 [ 65.047546][ T2475] usb_set_configuration+0xec5/0x1740 [ 65.052926][ T2475] usb_generic_driver_probe+0x9d/0xe0 [ 65.058395][ T2475] usb_probe_device+0xc6/0x1f0 [ 65.063237][ T2475] ? usb_suspend+0x630/0x630 [ 65.067825][ T2475] really_probe+0x281/0x6d0 [ 65.072322][ T2475] driver_probe_device+0xfe/0x1d0 [ 65.077333][ T2475] __device_attach_driver+0x1c2/0x220 [ 65.082686][ T2475] ? driver_allows_async_probing+0x170/0x170 [ 65.088644][ T2475] bus_for_each_drv+0x162/0x1e0 [ 65.093473][ T2475] ? bus_rescan_devices+0x20/0x20 [ 65.098493][ T2475] ? _raw_spin_unlock_irqrestore+0x9b/0xe0 [ 65.104279][ T2475] __device_attach+0x21a/0x360 [ 65.109038][ T2475] ? device_bind_driver+0xd0/0xd0 [ 65.114055][ T2475] ? kfree+0x285/0x2b0 [ 65.118118][ T2475] ? kobject_uevent_env+0x2aa/0x12e0 [ 65.123385][ T2475] bus_probe_device+0x1e4/0x290 [ 65.128220][ T2475] device_add+0xaf1/0x1900 [ 65.132627][ T2475] ? uevent_show+0x360/0x360 [ 65.137199][ T2475] ? _raw_spin_unlock_irq+0x1f/0x80 [ 65.142379][ T2475] usb_new_device.cold+0x753/0x103d [ 65.147578][ T2475] ? hub_disconnect+0x4a0/0x4a0 [ 65.152425][ T2475] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 65.158385][ T2475] hub_event+0x1eca/0x38f0 [ 65.162810][ T2475] ? hub_port_debounce+0x260/0x260 [ 65.167903][ T2475] ? flush_workqueue+0x7a1/0x14f0 [ 65.172936][ T2475] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 65.178994][ T2475] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 65.184984][ T2475] process_one_work+0x965/0x1690 [ 65.189917][ T2475] ? lock_release+0x800/0x800 [ 65.194641][ T2475] ? pwq_dec_nr_in_flight+0x310/0x310 [ 65.200006][ T2475] ? rwlock_bug.part.0+0x90/0x90 [ 65.205217][ T2475] worker_thread+0x96/0xe20 [ 65.209727][ T2475] ? process_one_work+0x1690/0x1690 [ 65.215203][ T2475] kthread+0x3b5/0x4a0 [ 65.219272][ T2475] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 65.224980][ T2475] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 65.230683][ T2475] ret_from_fork+0x1f/0x30 [ 65.236795][ T2475] Kernel Offset: disabled [ 65.241196][ T2475] Rebooting in 86400 seconds..