[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[1[ 14.573646][ C1] random: crng init done G[ 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 '10.128.10.29' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 28.362014][ T22] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 28.721640][ T22] usb 1-1: config 0 has an invalid interface number: 67 but max is 0 [ 28.729934][ T22] usb 1-1: config 0 has an invalid interface descriptor of length 8, skipping [ 28.738844][ T22] usb 1-1: config 0 has an invalid descriptor of length 1, skipping remainder of the config [ 28.748958][ T22] usb 1-1: config 0 has no interface number 0 [ 28.755093][ T22] usb 1-1: New USB device found, idVendor=174f, idProduct=5212, bcdDevice=1e.19 [ 28.764145][ T22] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 28.773342][ T22] usb 1-1: config 0 descriptor?? [ 28.813904][ T22] INFO: trying to register non-static key. [ 28.819749][ T22] the code is fine but needs lockdep annotation. [ 28.826165][ T22] turning off the locking correctness validator. [ 28.832531][ T22] CPU: 1 PID: 22 Comm: kworker/1:1 Not tainted 5.4.0-rc6+ #0 [ 28.839870][ T22] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 28.849943][ T22] Workqueue: usb_hub_wq hub_event [ 28.854937][ T22] Call Trace: [ 28.858206][ T22] dump_stack+0xca/0x13e [ 28.862424][ T22] register_lock_class+0x1022/0x11d0 [ 28.867680][ T22] ? stack_depot_save+0x252/0x440 [ 28.872685][ T22] ? is_dynamic_key+0x1b0/0x1b0 [ 28.877511][ T22] ? mark_lock+0xbc/0x1160 [ 28.881909][ T22] __lock_acquire+0xfc/0x3b60 [ 28.886561][ T22] ? skip_atoi+0xab/0xe0 [ 28.890783][ T22] ? put_dec+0xd0/0xd0 [ 28.894832][ T22] ? format_decode+0x230/0xad0 [ 28.899568][ T22] ? mark_held_locks+0xe0/0xe0 [ 28.904305][ T22] ? enable_ptr_key_workfn+0x30/0x30 [ 28.909597][ T22] ? uvc_probe+0x18e/0x64e4 [ 28.914076][ T22] ? really_probe+0x281/0x6d0 [ 28.918723][ T22] ? driver_probe_device+0x104/0x210 [ 28.923979][ T22] ? __device_attach_driver+0x1c2/0x220 [ 28.929494][ T22] ? bus_for_each_drv+0x162/0x1e0 [ 28.934490][ T22] ? __device_attach+0x217/0x360 [ 28.939400][ T22] lock_acquire+0x127/0x320 [ 28.943876][ T22] ? ida_destroy+0xb0/0x3a0 [ 28.948350][ T22] _raw_spin_lock_irqsave+0x32/0x50 [ 28.953548][ T22] ? ida_destroy+0xb0/0x3a0 [ 28.958025][ T22] ida_destroy+0xb0/0x3a0 [ 28.962507][ T22] ? refcount_sub_and_test_checked+0x130/0x1c0 [ 28.969517][ T22] ? ida_alloc_range+0x7f0/0x7f0 [ 28.974432][ T22] ? uvc_delete+0x21/0x2f0 [ 28.978843][ T22] ? kobject_put+0x78/0x280 [ 28.983318][ T22] media_device_cleanup+0x15/0x70 [ 28.988314][ T22] uvc_delete+0x8e/0x2f0 [ 28.992553][ T22] uvc_probe+0xf95/0x64e4 [ 28.996871][ T22] ? __lock_acquire+0x145e/0x3b60 [ 29.001934][ T22] ? mark_lock+0xbc/0x1160 [ 29.006433][ T22] ? mark_lock+0xbc/0x1160 [ 29.010926][ T22] ? usb_probe_interface+0x305/0x7a0 [ 29.016198][ T22] usb_probe_interface+0x305/0x7a0 [ 29.021290][ T22] ? usb_probe_device+0x100/0x100 [ 29.026291][ T22] really_probe+0x281/0x6d0 [ 29.030791][ T22] driver_probe_device+0x104/0x210 [ 29.036330][ T22] __device_attach_driver+0x1c2/0x220 [ 29.041801][ T22] ? driver_allows_async_probing+0x160/0x160 [ 29.047804][ T22] bus_for_each_drv+0x162/0x1e0 [ 29.052636][ T22] ? bus_rescan_devices+0x20/0x20 [ 29.057639][ T22] ? _raw_spin_unlock_irqrestore+0x3e/0x50 [ 29.063420][ T22] ? lockdep_hardirqs_on+0x382/0x580 [ 29.068678][ T22] __device_attach+0x217/0x360 [ 29.073433][ T22] ? device_bind_driver+0xd0/0xd0 [ 29.078441][ T22] ? kobject_uevent_env+0x29e/0x1160 [ 29.083697][ T22] ? kobject_uevent_env+0x2a8/0x1160 [ 29.088951][ T22] bus_probe_device+0x1e4/0x290 [ 29.093775][ T22] ? blocking_notifier_call_chain+0x54/0xa0 [ 29.099640][ T22] device_add+0xae6/0x16f0 [ 29.104039][ T22] ? uevent_store+0x50/0x50 [ 29.108532][ T22] ? _raw_spin_unlock_irqrestore+0x3e/0x50 [ 29.114311][ T22] usb_set_configuration+0xdf6/0x1670 [ 29.119655][ T22] generic_probe+0x9d/0xd5 [ 29.124044][ T22] usb_probe_device+0x99/0x100 [ 29.128777][ T22] ? usb_suspend+0x620/0x620 [ 29.133343][ T22] really_probe+0x281/0x6d0 [ 29.137818][ T22] driver_probe_device+0x104/0x210 [ 29.142902][ T22] __device_attach_driver+0x1c2/0x220 [ 29.148255][ T22] ? driver_allows_async_probing+0x160/0x160 [ 29.154203][ T22] bus_for_each_drv+0x162/0x1e0 [ 29.159026][ T22] ? bus_rescan_devices+0x20/0x20 [ 29.164036][ T22] ? _raw_spin_unlock_irqrestore+0x3e/0x50 [ 29.169815][ T22] ? lockdep_hardirqs_on+0x382/0x580 [ 29.175071][ T22] __device_attach+0x217/0x360 [ 29.179809][ T22] ? device_bind_driver+0xd0/0xd0 [ 29.184818][ T22] ? kobject_uevent_env+0x29e/0x1160 [ 29.190097][ T22] ? kobject_uevent_env+0x2a8/0x1160 [ 29.195356][ T22] bus_probe_device+0x1e4/0x290 [ 29.200196][ T22] ? blocking_notifier_call_chain+0x54/0xa0 [ 29.206073][ T22] device_add+0xae6/0x16f0 [ 29.210560][ T22] ? uevent_store+0x50/0x50 [ 29.215040][ T22] usb_new_device.cold+0x6a4/0xe79 [ 29.220154][ T22] hub_event+0x1df8/0x3800 [ 29.224546][ T22] ? hub_port_debounce+0x260/0x260 [ 29.229629][ T22] ? find_held_lock+0x2d/0x110 [ 29.234369][ T22] ? mark_held_locks+0xe0/0xe0 [ 29.239106][ T22] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 29.244639][ T22] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 29.249908][ T22] process_one_work+0x92b/0x1530 [ 29.254818][ T22] ? pwq_dec_nr_in_flight+0x310/0x310 [ 29.260161][ T22] ? do_raw_spin_lock+0x11a/0x280 [ 29.265