[ 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 '10.128.0.42' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 59.630473][ T7045] IPVS: ftp: loaded support on port[0] = 21 [ 59.945145][ T2905] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 60.185013][ T2905] usb 1-1: Using ep0 maxpacket: 8 [ 60.305259][ T2905] usb 1-1: config 0 has too many interfaces: 65, using maximum allowed: 32 [ 60.314041][ T2905] usb 1-1: config 0 has an invalid descriptor of length 0, skipping remainder of the config [ 60.325588][ T2905] usb 1-1: config 0 has 1 interface, different from the descriptor's value: 65 [ 60.334558][ T2905] usb 1-1: New USB device found, idVendor=0bd3, idProduct=0555, bcdDevice=69.6a [ 60.344677][ T2905] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 60.355335][ T2905] usb 1-1: config 0 descriptor?? [ 60.636074][ T2905] usb 1-1: string descriptor 0 read error: -71 [ 60.642639][ T2905] uvcvideo: Found UVC 0.00 device (0bd3:0555) [ 60.655008][ T2905] uvcvideo 1-1:0.0: Entity type for entity Output 1 was not initialized! [ 60.668602][ T2905] ------------[ cut here ]------------ [ 60.674063][ T2905] WARNING: CPU: 0 PID: 2905 at drivers/media/mc/mc-entity.c:666 media_create_pad_link+0x4e2/0x650 [ 60.684614][ T2905] Kernel panic - not syncing: panic_on_warn set ... [ 60.691177][ T2905] CPU: 0 PID: 2905 Comm: kworker/0:3 Not tainted 5.7.0-rc7-syzkaller #0 [ 60.699549][ T2905] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.709584][ T2905] Workqueue: usb_hub_wq hub_event [ 60.714578][ T2905] Call Trace: [ 60.717845][ T2905] dump_stack+0x188/0x20d [ 60.722170][ T2905] ? media_create_pad_link+0x420/0x650 [ 60.727601][ T2905] panic+0x2e3/0x75c [ 60.731492][ T2905] ? add_taint.cold+0x16/0x16 [ 60.736146][ T2905] ? printk+0xba/0xed [ 60.740100][ T2905] ? kmsg_dump_rewind_nolock+0xd9/0xd9 [ 60.745541][ T2905] ? __warn.cold+0x14/0x35 [ 60.749929][ T2905] ? __warn+0xd5/0x1c8 [ 60.753971][ T2905] ? media_create_pad_link+0x4e2/0x650 [ 60.759418][ T2905] __warn.cold+0x2f/0x35 [ 60.763642][ T2905] ? media_create_pad_link+0x4e2/0x650 [ 60.769087][ T2905] report_bug+0x27b/0x2f0 [ 60.773391][ T2905] do_error_trap+0x12b/0x220 [ 60.777967][ T2905] ? media_create_pad_link+0x4e2/0x650 [ 60.783419][ T2905] do_invalid_op+0x32/0x40 [ 60.787808][ T2905] ? media_create_pad_link+0x4e2/0x650 [ 60.793241][ T2905] invalid_op+0x23/0x30 [ 60.797372][ T2905] RIP: 0010:media_create_pad_link+0x4e2/0x650 [ 60.803409][ T2905] Code: 04 7a 31 fc 44 89 e0 48 83 c4 20 5b 5d 41 5c 41 5d 41 5e 41 5f c3 e8 ed 79 31 fc 0f 0b 41 bc ea ff ff ff eb da e8 de 79 31 fc <0f> 0b 41 bc ea ff ff ff eb cb e8 cf 79 31 fc 0f 0b 41 bc ea ff ff [ 60.823070][ T2905] RSP: 0018:ffffc90008a3ef70 EFLAGS: 00010293 [ 60.829118][ T2905] RAX: ffff88809ef7c140 RBX: ffff88809eaaf070 RCX: ffffffff8541c05e [ 60.837063][ T2905] RDX: 0000000000000000 RSI: ffffffff8541c4c2 RDI: 0000000000000002 [ 60.845009][ T2905] RBP: ffff8880a7399870 R08: ffff88809ef7c140 R09: ffffed1014dd7098 [ 60.852965][ T2905] R10: ffff8880a6eb84bb R11: ffffed1014dd7097 R12: 0000000000000001 [ 60.860908][ T2905] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000000 [ 60.868863][ T2905] ? media_create_pad_link+0x7e/0x650 [ 60.874207][ T2905] ? media_create_pad_link+0x4e2/0x650 [ 60.879656][ T2905] ? v4l2_device_register_subdev+0x422/0x640 [ 60.885629][ T2905] uvc_mc_register_entities+0x468/0x77a [ 60.891154][ T2905] uvc_probe.cold+0x23c9/0x2a44 [ 60.895995][ T2905] ? __pm_runtime_set_status+0x702/0xa10 [ 60.901615][ T2905] ? lock_acquire+0x1f2/0x8f0 [ 60.907049][ T2905] ? pm_runtime_enable+0x2a/0x310 [ 60.912047][ T2905] ? mark_lock+0x12b/0xf10 [ 60.916441][ T2905] ? print_usage_bug+0x240/0x240 [ 60.921352][ T2905] ? rwlock_bug.part.0+0x90/0x90 [ 60.926267][ T2905] ? mark_held_locks+0x9f/0xe0 [ 60.931006][ T2905] ? usb_probe_interface+0x305/0x7a0 [ 60.936261][ T2905] usb_probe_interface+0x305/0x7a0 [ 60.941346][ T2905] ? usb_probe_device+0x1f0/0x1f0 [ 60.946357][ T2905] really_probe+0x281/0x6d0 [ 60.950846][ T2905] driver_probe_device+0x104/0x210 [ 60.955932][ T2905] __device_attach_driver+0x1c2/0x220 [ 60.961276][ T2905] ? driver_allows_async_probing+0x170/0x170 [ 60.967248][ T2905] bus_for_each_drv+0x162/0x1e0 [ 60.972083][ T2905] ? bus_rescan_devices+0x20/0x20 [ 60.977083][ T2905] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 60.982862][ T2905] ? lockdep_hardirqs_on+0x463/0x620 [ 60.988120][ T2905] ? _raw_spin_unlock_irqrestore+0x9b/0xe0 [ 60.993903][ T2905] __device_attach+0x21a/0x360 [ 60.998641][ T2905] ? device_bind_driver+0xd0/0xd0 [ 61.003661][ T2905] bus_probe_device+0x1e4/0x290 [ 61.008495][ T2905] device_add+0x132d/0x1c10 [ 61.012973][ T2905] ? wait_for_completion+0x270/0x270 [ 61.018245][ T2905] ? uevent_show+0x360/0x360 [ 61.022818][ T2905] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 61.028606][ T2905] usb_set_configuration+0xec5/0x1740 [ 61.033964][ T2905] usb_generic_driver_probe+0x9d/0xe0 [ 61.039308][ T2905] usb_probe_device+0xc6/0x1f0 [ 61.044044][ T2905] ? usb_suspend+0x630/0x630 [ 61.048606][ T2905] really_probe+0x281/0x6d0 [ 61.053084][ T2905] driver_probe_device+0x104/0x210 [ 61.058168][ T2905] __device_attach_driver+0x1c2/0x220 [ 61.063608][ T2905] ? driver_allows_async_probing+0x170/0x170 [ 61.069569][ T2905] bus_for_each_drv+0x162/0x1e0 [ 61.074415][ T2905] ? bus_rescan_devices+0x20/0x20 [ 61.079419][ T2905] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 61.085219][ T2905] ? lockdep_hardirqs_on+0x463/0x620 [ 61.090491][ T2905] ? _raw_spin_unlock_irqrestore+0x9b/0xe0 [ 61.096276][ T2905] __device_attach+0x21a/0x360 [ 61.101017][ T2905] ? device_bind_driver+0xd0/0xd0 [ 61.106022][ T2905] bus_probe_device+0x1e4/0x290 [ 61.110881][ T2905] device_add+0x132d/0x1c10 [ 61.115363][ T2905] ? uevent_show+0x360/0x360 [ 61.119933][ T2905] usb_new_device.cold+0x701/0xfcf [ 61.125024][ T2905] ? hub_disconnect+0x4a0/0x4a0 [ 61.129949][ T2905] ? mark_held_locks+0x9f/0xe0 [ 61.134697][ T2905] ? _raw_spin_unlock_irq+0x1f/0x80 [ 61.139875][ T2905] hub_event+0x1eca/0x38f0 [ 61.144292][ T2905] ? hub_port_debounce+0x260/0x260 [ 61.149389][ T2905] ? perf_trace_workqueue_execute_end+0x181/0x420 [ 61.155783][ T2905] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 61.161303][ T2905] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 61.167256][ T2905] ? _raw_spin_unlock_irq+0x1f/0x80 [ 61.172427][ T2905] process_one_work+0x965/0x16a0 [ 61.177343][ T2905] ? lock_release+0x800/0x800 [ 61.181991][ T2905] ? pwq_dec_nr_in_flight+0x310/0x310 [ 61.187342][ T2905] ? rwlock_bug.part.0+0x90/0x90 [ 61.192257][ T2905] worker_thread+0x96/0xe20 [ 61.196754][ T2905] ? process_one_work+0x16a0/0x16a0 [ 61.201927][ T2905] kthread+0x388/0x470 [ 61.205969][ T2905] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 61.211660][ T2905] ret_from_fork+0x24/0x30 [ 61.217355][ T2905] Kernel Offset: disabled [ 61.221754][ T2905] Rebooting in 86400 seconds..