INIT: Entering runlevel: 2 [info] Using makefile-style concurrent boot in runlevel 2. [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.110' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 29.450693][ T95] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 29.540904][ T95] usb 1-1: Using ep0 maxpacket: 8 [ 29.661255][ T95] usb 1-1: config 0 has an invalid descriptor of length 0, skipping remainder of the config [ 29.671519][ T95] usb 1-1: New USB device found, idVendor=0bd3, idProduct=0555, bcdDevice=69.6a [ 29.681102][ T95] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 29.690819][ T95] usb 1-1: config 0 descriptor?? executing program [ 30.410880][ T95] uvcvideo: Found UVC 0.00 device (0bd3:0555) [ 30.418036][ T95] uvcvideo 1-1:0.0: Entity type for entity ᠌ was not initialized! [ 30.426608][ T95] ------------[ cut here ]------------ [ 30.432148][ T95] kernel BUG at drivers/media/mc/mc-entity.c:666! [ 30.438684][ T95] invalid opcode: 0000 [#1] SMP KASAN [ 30.444078][ T95] CPU: 0 PID: 95 Comm: kworker/0:2 Not tainted 5.6.0-rc3-syzkaller #0 [ 30.452213][ T95] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 30.462292][ T95] Workqueue: usb_hub_wq hub_event [ 30.467309][ T95] RIP: 0010:media_create_pad_link+0x40f/0x530 [ 30.473371][ T95] Code: 83 45 3a 01 45 31 e4 e8 6f 61 44 fd 44 89 e0 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e 41 5f c3 e8 58 61 44 fd 0f 0b e8 51 61 44 fd <0f> 0b e8 4a 61 44 fd 0f 0b e8 f3 09 6d fd e9 91 fc ff ff e8 e9 09 [ 30.492973][ T95] RSP: 0018:ffff8881d5f67038 EFLAGS: 00010293 [ 30.499042][ T95] RAX: ffff8881d7114980 RBX: ffff8881ce3b3070 RCX: ffffffff83faf80b [ 30.507012][ T95] RDX: 0000000000000000 RSI: ffffffff83fafb9f RDI: 0000000000000000 [ 30.514978][ T95] RBP: ffff8881ce0f1870 R08: ffff8881d7114980 R09: ffffed1039b23691 [ 30.522942][ T95] R10: ffffed1039b23690 R11: ffff8881cd91b483 R12: 0000000000000000 [ 30.531005][ T95] R13: 0000000000000000 R14: 0000000000000003 R15: 0000000000000000 [ 30.538970][ T95] FS: 0000000000000000(0000) GS:ffff8881db200000(0000) knlGS:0000000000000000 [ 30.548021][ T95] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 30.554606][ T95] CR2: 00007f55517e9000 CR3: 00000001cebb0000 CR4: 00000000001406f0 [ 30.562650][ T95] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 30.570606][ T95] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 30.578575][ T95] Call Trace: [ 30.581990][ T95] uvc_mc_register_entities+0x468/0x77a [ 30.587537][ T95] ? uvc_probe.cold+0x16a6/0x2a51 [ 30.592550][ T95] uvc_probe.cold+0x205c/0x2a51 [ 30.597480][ T95] ? mark_lock+0xbc/0x1160 [ 30.601880][ T95] ? mark_lock+0xbc/0x1160 [ 30.606292][ T95] ? mark_held_locks+0x9f/0xe0 [ 30.611052][ T95] ? usb_probe_interface+0x310/0x800 [ 30.616325][ T95] usb_probe_interface+0x310/0x800 [ 30.621428][ T95] ? usb_probe_device+0x230/0x230 [ 30.626607][ T95] really_probe+0x290/0xac0 [ 30.631216][ T95] driver_probe_device+0x223/0x350 [ 30.636307][ T95] __device_attach_driver+0x1d1/0x290 [ 30.641665][ T95] ? driver_allows_async_probing+0x160/0x160 [ 30.647640][ T95] bus_for_each_drv+0x162/0x1e0 [ 30.652480][ T95] ? bus_rescan_devices+0x20/0x20 [ 30.657485][ T95] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 30.663386][ T95] ? lockdep_hardirqs_on+0x382/0x580 [ 30.668697][ T95] __device_attach+0x217/0x390 [ 30.673458][ T95] ? device_bind_driver+0xd0/0xd0 [ 30.678467][ T95] bus_probe_device+0x1e4/0x290 [ 30.683307][ T95] device_add+0x1459/0x1bf0 [ 30.687794][ T95] ? wait_for_completion+0x3c0/0x3c0 [ 30.693062][ T95] ? device_link_remove+0x110/0x110 [ 30.698240][ T95] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 30.704032][ T95] usb_set_configuration+0xe47/0x17d0 [ 30.709394][ T95] usb_generic_driver_probe+0x9d/0xe0 [ 30.714764][ T95] usb_probe_device+0xd9/0x230 [ 30.720556][ T95] ? usb_suspend+0x5f0/0x5f0 [ 30.725145][ T95] really_probe+0x290/0xac0 [ 30.729686][ T95] driver_probe_device+0x223/0x350 [ 30.734811][ T95] __device_attach_driver+0x1d1/0x290 [ 30.740166][ T95] ? driver_allows_async_probing+0x160/0x160 [ 30.746133][ T95] bus_for_each_drv+0x162/0x1e0 [ 30.750975][ T95] ? bus_rescan_devices+0x20/0x20 [ 30.755983][ T95] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 30.761913][ T95] ? lockdep_hardirqs_on+0x382/0x580 [ 30.767965][ T95] __device_attach+0x217/0x390 [ 30.772721][ T95] ? device_bind_driver+0xd0/0xd0 [ 30.777773][ T95] bus_probe_device+0x1e4/0x290 [ 30.782626][ T95] device_add+0x1459/0x1bf0 [ 30.787118][ T95] ? device_link_remove+0x110/0x110 [ 30.792310][ T95] usb_new_device.cold+0x540/0xcd0 [ 30.797407][ T95] hub_event+0x21cb/0x4300 [ 30.802233][ T95] ? hub_port_debounce+0x350/0x350 [ 30.807420][ T95] ? find_held_lock+0x2d/0x110 [ 30.812308][ T95] ? mark_held_locks+0xe0/0xe0 [ 30.817154][ T95] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 30.822712][ T95] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 30.827985][ T95] process_one_work+0x94b/0x1620 [ 30.832909][ T95] ? pwq_dec_nr_in_flight+0x310/0x310 [ 30.838285][ T95] ? do_raw_spin_lock+0x129/0x290 [ 30.843298][ T95] worker_thread+0x96/0xe20 [ 30.847788][ T95] ? process_one_work+0x1620/0x1620 [ 30.853147][ T95] kthread+0x318/0x420 [ 30.857201][ T95] ? kthread_create_on_node+0xf0/0xf0 [ 30.862581][ T95] ret_from_fork+0x24/0x30 [ 30.866980][ T95] Modules linked in: [ 30.870926][ T95] ---[ end trace 4def2bd06d57ee51 ]--- [ 30.876392][ T95] RIP: 0010:media_create_pad_link+0x40f/0x530 [ 30.882580][ T95] Code: 83 45 3a 01 45 31 e4 e8 6f 61 44 fd 44 89 e0 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e 41 5f c3 e8 58 61 44 fd 0f 0b e8 51 61 44 fd <0f> 0b e8 4a 61 44 fd 0f 0b e8 f3 09 6d fd e9 91 fc ff ff e8 e9 09 [ 30.902226][ T95] RSP: 0018:ffff8881d5f67038 EFLAGS: 00010293 [ 30.908278][ T95] RAX: ffff8881d7114980 RBX: ffff8881ce3b3070 RCX: ffffffff83faf80b [ 30.917140][ T95] RDX: 0000000000000000 RSI: ffffffff83fafb9f RDI: 0000000000000000 [ 30.925253][ T95] RBP: ffff8881ce0f1870 R08: ffff8881d7114980 R09: ffffed1039b23691 [ 30.933258][ T95] R10: ffffed1039b23690 R11: ffff8881cd91b483 R12: 0000000000000000 [ 30.941390][ T95] R13: 0000000000000000 R14: 0000000000000003 R15: 0000000000000000 [ 30.949353][ T95] FS: 0000000000000000(0000) GS:ffff8881db200000(0000) knlGS:0000000000000000 [ 30.958309][ T95] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 30.964960][ T95] CR2: 00007f55517e9000 CR3: 00000001cebb0000 CR4: 00000000001406f0 [ 30.972977][ T95] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 30.980986][ T95] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 30.989174][ T95] Kernel panic - not syncing: Fatal exception [ 30.996017][ T95] Kernel Offset: disabled [ 31.000426][ T95] Rebooting in 86400 seconds..