[info] Using makefile-style concurrent boot in runlevel 2. [....] Starting enhanced syslogd: rsyslogd[ 15.151616][ C1] random: crng init done [?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 '10.128.0.50' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 24.977643][ T22] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 25.417744][ T22] usb 1-1: New USB device found, idVendor=18cd, idProduct=cafe, bcdDevice= 3.bb [ 25.426886][ T22] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=16 [ 25.435129][ T22] usb 1-1: SerialNumber: syz [ 25.441006][ T22] usb 1-1: config 0 descriptor?? executing program [ 25.717750][ T22] uvcvideo: Found UVC 0.00 device (18cd:cafe) [ 25.724871][ T22] uvcvideo 1-1:0.0: Entity type for entity Output 0 was not initialized! [ 25.733793][ T22] ------------[ cut here ]------------ [ 25.739248][ T22] kernel BUG at drivers/media/mc/mc-entity.c:666! [ 25.745739][ T22] invalid opcode: 0000 [#1] SMP KASAN [ 25.751127][ T22] CPU: 1 PID: 22 Comm: kworker/1:1 Not tainted 5.4.0-syzkaller #0 [ 25.758922][ T22] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 25.769056][ T22] Workqueue: usb_hub_wq hub_event [ 25.774070][ T22] RIP: 0010:media_create_pad_link+0x40f/0x530 [ 25.780132][ T22] Code: 83 45 3a 01 45 31 e4 e8 9f 93 59 fd 44 89 e0 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e 41 5f c3 e8 88 93 59 fd 0f 0b e8 81 93 59 fd <0f> 0b e8 7a 93 59 fd 0f 0b e8 53 23 81 fd e9 91 fc ff ff e8 49 23 [ 25.800687][ T22] RSP: 0018:ffff8881d8c2f058 EFLAGS: 00010293 [ 25.806754][ T22] RAX: ffff8881da24e200 RBX: ffff8881cf8dc070 RCX: ffffffff83e4dd4b [ 25.814827][ T22] RDX: 0000000000000000 RSI: ffffffff83e4e0df RDI: 0000000000000000 [ 25.822782][ T22] RBP: ffff8881cf8da070 R08: ffff8881da24e200 R09: ffffed1039ff2a91 [ 25.831728][ T22] R10: ffffed1039ff2a90 R11: ffff8881cff95483 R12: 0000000000000000 [ 25.840821][ T22] R13: 0000000000000000 R14: 0000000000000003 R15: 0000000000000000 [ 25.848809][ T22] FS: 0000000000000000(0000) GS:ffff8881db300000(0000) knlGS:0000000000000000 [ 25.857746][ T22] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 25.864334][ T22] CR2: 00007f7061237000 CR3: 00000001d148c000 CR4: 00000000001406e0 [ 25.872313][ T22] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 25.880308][ T22] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 25.888259][ T22] Call Trace: [ 25.891541][ T22] uvc_mc_register_entities+0x468/0x77a [ 25.897078][ T22] uvc_probe.cold+0x2137/0x29de [ 25.901922][ T22] ? mark_lock+0xbc/0x1160 [ 25.906314][ T22] ? mark_lock+0xbc/0x1160 [ 25.910721][ T22] ? mark_held_locks+0x9f/0xe0 [ 25.915481][ T22] ? usb_probe_interface+0x305/0x7a0 [ 25.920883][ T22] usb_probe_interface+0x305/0x7a0 [ 25.926159][ T22] ? usb_probe_device+0x100/0x100 [ 25.931166][ T22] really_probe+0x281/0x6d0 [ 25.935665][ T22] driver_probe_device+0x104/0x210 [ 25.940810][ T22] __device_attach_driver+0x1c2/0x220 [ 25.946177][ T22] ? driver_allows_async_probing+0x160/0x160 [ 25.953354][ T22] bus_for_each_drv+0x162/0x1e0 [ 25.958189][ T22] ? bus_rescan_devices+0x20/0x20 [ 25.963198][ T22] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 25.968986][ T22] ? lockdep_hardirqs_on+0x382/0x580 [ 25.974248][ T22] __device_attach+0x217/0x360 [ 25.979001][ T22] ? device_bind_driver+0xd0/0xd0 [ 25.984024][ T22] bus_probe_device+0x1e4/0x290 [ 25.988863][ T22] device_add+0x1480/0x1c20 [ 25.993346][ T22] ? wait_for_completion+0x3c0/0x3c0 [ 25.998622][ T22] ? device_links_flush_sync_list+0x350/0x350 [ 26.004680][ T22] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 26.010470][ T22] usb_set_configuration+0xe67/0x1740 [ 26.015839][ T22] generic_probe+0x9d/0xd5 [ 26.020241][ T22] usb_probe_device+0x99/0x100 [ 26.025157][ T22] ? usb_suspend+0x620/0x620 [ 26.029748][ T22] really_probe+0x281/0x6d0 [ 26.034238][ T22] driver_probe_device+0x104/0x210 [ 26.040033][ T22] __device_attach_driver+0x1c2/0x220 [ 26.045504][ T22] ? driver_allows_async_probing+0x160/0x160 [ 26.051557][ T22] bus_for_each_drv+0x162/0x1e0 [ 26.056402][ T22] ? bus_rescan_devices+0x20/0x20 [ 26.061713][ T22] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 26.068327][ T22] ? lockdep_hardirqs_on+0x382/0x580 [ 26.073610][ T22] __device_attach+0x217/0x360 [ 26.078376][ T22] ? device_bind_driver+0xd0/0xd0 [ 26.083396][ T22] bus_probe_device+0x1e4/0x290 [ 26.088234][ T22] device_add+0x1480/0x1c20 [ 26.092732][ T22] ? device_links_flush_sync_list+0x350/0x350 [ 26.098785][ T22] usb_new_device.cold+0x6a4/0xe79 [ 26.103877][ T22] hub_event+0x1e59/0x3860 [ 26.108271][ T22] ? hub_port_debounce+0x260/0x260 [ 26.113366][ T22] ? find_held_lock+0x2d/0x110 [ 26.118118][ T22] ? mark_held_locks+0xe0/0xe0 [ 26.122860][ T22] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 26.128389][ T22] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 26.133740][ T22] process_one_work+0x92b/0x1530 [ 26.138658][ T22] ? pwq_dec_nr_in_flight+0x310/0x310 [ 26.144007][ T22] ? do_raw_spin_lock+0x11a/0x280 [ 26.149020][ T22] worker_thread+0x96/0xe20 [ 26.153759][ T22] ? process_one_work+0x1530/0x1530 [ 26.159022][ T22] kthread+0x318/0x420 [ 26.163089][ T22] ? kthread_create_on_node+0xf0/0xf0 [ 26.168482][ T22] ret_from_fork+0x24/0x30 [ 26.173175][ T22] Modules linked in: [ 26.177149][ T22] ---[ end trace 4651c1a0587de7fd ]--- [ 26.182749][ T22] RIP: 0010:media_create_pad_link+0x40f/0x530 [ 26.188842][ T22] Code: 83 45 3a 01 45 31 e4 e8 9f 93 59 fd 44 89 e0 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e 41 5f c3 e8 88 93 59 fd 0f 0b e8 81 93 59 fd <0f> 0b e8 7a 93 59 fd 0f 0b e8 53 23 81 fd e9 91 fc ff ff e8 49 23 [ 26.208584][ T22] RSP: 0018:ffff8881d8c2f058 EFLAGS: 00010293 [ 26.214976][ T22] RAX: ffff8881da24e200 RBX: ffff8881cf8dc070 RCX: ffffffff83e4dd4b [ 26.223322][ T22] RDX: 0000000000000000 RSI: ffffffff83e4e0df RDI: 0000000000000000 [ 26.231399][ T22] RBP: ffff8881cf8da070 R08: ffff8881da24e200 R09: ffffed1039ff2a91 [ 26.239574][ T22] R10: ffffed1039ff2a90 R11: ffff8881cff95483 R12: 0000000000000000 [ 26.247772][ T22] R13: 0000000000000000 R14: 0000000000000003 R15: 0000000000000000 [ 26.255729][ T22] FS: 0000000000000000(0000) GS:ffff8881db300000(0000) knlGS:0000000000000000 [ 26.264686][ T22] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 26.271293][ T22] CR2: 00007f7061237000 CR3: 00000001d148c000 CR4: 00000000001406e0 [ 26.279289][ T22] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 26.287255][ T22] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 26.295238][ T22] Kernel panic - not syncing: Fatal exception [ 26.302039][ T22] Kernel Offset: disabled [ 26.306359][ T22] Rebooting in 86400 seconds..