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 '10.128.0.134' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 24.459186][ T102] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 24.699150][ T102] usb 1-1: Using ep0 maxpacket: 32 [ 24.819252][ T102] usb 1-1: config 0 has an invalid interface number: 100 but max is 0 [ 24.827477][ T102] usb 1-1: config 0 has no interface number 0 [ 24.833784][ T102] usb 1-1: New USB device found, idVendor=05a9, idProduct=7670, bcdDevice=43.47 [ 24.842879][ T102] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 24.852265][ T102] usb 1-1: config 0 descriptor?? [ 24.891167][ T102] INFO: trying to register non-static key. [ 24.903019][ T102] the code is fine but needs lockdep annotation. [ 24.909528][ T102] turning off the locking correctness validator. [ 24.915936][ T102] CPU: 0 PID: 102 Comm: kworker/0:2 Not tainted 5.3.0-rc4+ #26 [ 24.923449][ T102] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 24.933495][ T102] Workqueue: usb_hub_wq hub_event [ 24.939058][ T102] Call Trace: [ 24.942344][ T102] dump_stack+0xca/0x13e [ 24.946565][ T102] register_lock_class+0x1022/0x11d0 [ 24.951825][ T102] ? stack_depot_save+0x252/0x44d [ 24.956922][ T102] ? is_dynamic_key+0x1b0/0x1b0 [ 24.961749][ T102] ? mark_lock+0xbc/0x1130 [ 24.966136][ T102] __lock_acquire+0xfc/0x3b50 [ 24.970794][ T102] ? skip_atoi+0xab/0xe0 [ 24.975004][ T102] ? put_dec+0xd0/0xd0 [ 24.979051][ T102] ? format_decode+0x230/0xad0 [ 24.983801][ T102] ? mark_held_locks+0xe0/0xe0 [ 24.988539][ T102] ? enable_ptr_key_workfn+0x30/0x30 [ 24.993800][ T102] ? uvc_probe+0x18e/0x64e4 [ 24.998280][ T102] ? really_probe+0x281/0x6d0 [ 25.002938][ T102] ? driver_probe_device+0x101/0x1b0 [ 25.008220][ T102] ? __device_attach_driver+0x1c2/0x220 [ 25.013744][ T102] ? bus_for_each_drv+0x162/0x1e0 [ 25.018933][ T102] ? __device_attach+0x217/0x360 [ 25.023846][ T102] lock_acquire+0x127/0x320 [ 25.028322][ T102] ? ida_destroy+0xb0/0x3a0 [ 25.032817][ T102] _raw_spin_lock_irqsave+0x32/0x50 [ 25.038018][ T102] ? ida_destroy+0xb0/0x3a0 [ 25.042492][ T102] ida_destroy+0xb0/0x3a0 [ 25.046818][ T102] ? refcount_sub_and_test_checked+0x130/0x1c0 [ 25.052946][ T102] ? idr_replace+0x160/0x160 [ 25.057526][ T102] ? kobject_put+0x78/0x280 [ 25.062095][ T102] media_device_cleanup+0x15/0x70 [ 25.067105][ T102] uvc_delete+0x8e/0x2f0 [ 25.071324][ T102] uvc_probe+0xf95/0x64e4 [ 25.075628][ T102] ? mark_lock+0xbc/0x1130 [ 25.080014][ T102] ? mark_lock+0xbc/0x1130 [ 25.084417][ T102] ? usb_probe_interface+0x305/0x7a0 [ 25.089685][ T102] usb_probe_interface+0x305/0x7a0 [ 25.094769][ T102] ? usb_probe_device+0x100/0x100 [ 25.099765][ T102] really_probe+0x281/0x6d0 [ 25.104261][ T102] driver_probe_device+0x101/0x1b0 [ 25.109353][ T102] __device_attach_driver+0x1c2/0x220 [ 25.114697][ T102] ? driver_allows_async_probing+0x160/0x160 [ 25.120650][ T102] bus_for_each_drv+0x162/0x1e0 [ 25.125502][ T102] ? bus_rescan_devices+0x20/0x20 [ 25.130499][ T102] ? _raw_spin_unlock_irqrestore+0x3e/0x50 [ 25.136279][ T102] ? lockdep_hardirqs_on+0x379/0x580 [ 25.141539][ T102] __device_attach+0x217/0x360 [ 25.146276][ T102] ? device_bind_driver+0xd0/0xd0 [ 25.151272][ T102] ? kobject_uevent_env+0x29e/0x1160 [ 25.156528][ T102] ? kobject_uevent_env+0x2a8/0x1160 [ 25.161790][ T102] bus_probe_device+0x1e4/0x290 [ 25.166639][ T102] ? blocking_notifier_call_chain+0x54/0xa0 [ 25.172518][ T102] device_add+0xae6/0x16f0 [ 25.176903][ T102] ? uevent_store+0x50/0x50 [ 25.181388][ T102] ? _raw_spin_unlock_irqrestore+0x3e/0x50 [ 25.187177][ T102] usb_set_configuration+0xdf6/0x1670 [ 25.192524][ T102] generic_probe+0x9d/0xd5 [ 25.196912][ T102] usb_probe_device+0x99/0x100 [ 25.201644][ T102] ? usb_suspend+0x620/0x620 [ 25.206207][ T102] really_probe+0x281/0x6d0 [ 25.210694][ T102] driver_probe_device+0x101/0x1b0 [ 25.215912][ T102] __device_attach_driver+0x1c2/0x220 [ 25.221267][ T102] ? driver_allows_async_probing+0x160/0x160 [ 25.227221][ T102] bus_for_each_drv+0x162/0x1e0 [ 25.232043][ T102] ? bus_rescan_devices+0x20/0x20 [ 25.237039][ T102] ? _raw_spin_unlock_irqrestore+0x3e/0x50 [ 25.242843][ T102] ? lockdep_hardirqs_on+0x379/0x580 [ 25.248106][ T102] __device_attach+0x217/0x360 [ 25.252841][ T102] ? device_bind_driver+0xd0/0xd0 [ 25.257838][ T102] ? kobject_uevent_env+0x29e/0x1160 [ 25.263093][ T102] ? kobject_uevent_env+0x2a8/0x1160 [ 25.268348][ T102] bus_probe_device+0x1e4/0x290 [ 25.273173][ T102] ? blocking_notifier_call_chain+0x54/0xa0 [ 25.279056][ T102] device_add+0xae6/0x16f0 [ 25.283443][ T102] ? uevent_store+0x50/0x50 [ 25.287934][ T102] usb_new_device.cold+0x6a4/0xe79 [ 25.293017][ T102] hub_event+0x1b5c/0x3640 [ 25.297419][ T102] ? hub_port_debounce+0x260/0x260 [ 25.302501][ T102] process_one_work+0x92b/0x1530 [ 25.307410][ T102] ? pwq_dec_nr_in_flight+0x310/0x310 [ 25.312753][ T102] ? do_raw_spin_lock+0x11a/0x280 [ 25.317748][ T102] worker_thread+0x96/0xe20 [ 25.322220][ T102] ? process_one_work+0x1530/0x1530 [ 25.327393][ T102] kthread+0x318/0x420 [ 25.331434][ T102] ? kthread_create_on_node+0xf0/0xf0 [ 25.336778][ T102] ret_from_fork+0x24/0x30 [