Warning: Permanently added '10.128.0.164' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program syzkaller login: [ 28.381434][ T12] usb 4-1: new low-speed USB device number 2 using dummy_hcd [ 28.389743][ T101] usb 6-1: new low-speed USB device number 2 using dummy_hcd [ 28.401342][ T5] usb 2-1: new low-speed USB device number 2 using dummy_hcd [ 28.412121][ T1778] usb 3-1: new low-speed USB device number 2 using dummy_hcd [ 28.420093][ T1784] usb 5-1: new low-speed USB device number 2 using dummy_hcd [ 28.431335][ T17] usb 1-1: new low-speed USB device number 2 using dummy_hcd [ 28.751522][ T12] usb 4-1: config 0 has an invalid interface number: 236 but max is 2 [ 28.760465][ T12] usb 4-1: config 0 has an invalid descriptor of length 99, skipping remainder of the config [ 28.771890][ T12] usb 4-1: config 0 has 1 interface, different from the descriptor's value: 3 [ 28.781328][ T12] usb 4-1: config 0 has no interface number 0 [ 28.787657][ T101] usb 6-1: config 0 has an invalid interface number: 236 but max is 2 [ 28.796048][ T101] usb 6-1: config 0 has an invalid descriptor of length 99, skipping remainder of the config [ 28.806856][ T101] usb 6-1: config 0 has 1 interface, different from the descriptor's value: 3 [ 28.816287][ T101] usb 6-1: config 0 has no interface number 0 [ 28.823078][ T5] usb 2-1: config 0 has an invalid interface number: 236 but max is 2 [ 28.831310][ T5] usb 2-1: config 0 has an invalid descriptor of length 99, skipping remainder of the config [ 28.831553][ T17] usb 1-1: config 0 has an invalid interface number: 236 but max is 2 [ 28.842006][ T5] usb 2-1: config 0 has 1 interface, different from the descriptor's value: 3 [ 28.842015][ T5] usb 2-1: config 0 has no interface number 0 [ 28.842096][ T1778] usb 3-1: config 0 has an invalid interface number: 236 but max is 2 [ 28.850588][ T17] usb 1-1: config 0 has an invalid descriptor of length 99, skipping remainder of the config [ 28.859993][ T1778] usb 3-1: config 0 has an invalid descriptor of length 99, skipping remainder of the config [ 28.866324][ T17] usb 1-1: config 0 has 1 interface, different from the descriptor's value: 3 [ 28.866340][ T17] usb 1-1: config 0 has no interface number 0 [ 28.875145][ T1778] usb 3-1: config 0 has 1 interface, different from the descriptor's value: 3 [ 28.885818][ T17] usb 1-1: config 0 interface 236 altsetting 0 endpoint 0x81 is Bulk; changing to Interrupt [ 28.896526][ T1778] usb 3-1: config 0 has no interface number 0 [ 28.906461][ T17] usb 1-1: New USB device found, idVendor=07c0, idProduct=1501, bcdDevice=74.a0 [ 28.913083][ T1784] usb 5-1: config 0 has an invalid interface number: 236 but max is 2 [ 28.922578][ T17] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 28.933097][ T1784] usb 5-1: config 0 has an invalid descriptor of length 99, skipping remainder of the config [ 28.944374][ T17] usb 1-1: config 0 descriptor?? [ 28.948536][ T1784] usb 5-1: config 0 has 1 interface, different from the descriptor's value: 3 [ 28.948548][ T1784] usb 5-1: config 0 has no interface number 0 [ 28.948589][ T5] usb 2-1: config 0 interface 236 altsetting 0 endpoint 0x81 is Bulk; changing to Interrupt [ 29.000159][ T17] iowarrior 1-1:0.236: IOWarrior product=0x1501, serial= interface=236 now attached to iowarrior0 [ 29.010761][ T5] usb 2-1: New USB device found, idVendor=07c0, idProduct=1501, bcdDevice=74.a0 [ 29.010780][ T5] usb 2-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 29.042202][ T101] usb 6-1: config 0 interface 236 altsetting 0 endpoint 0x81 is Bulk; changing to Interrupt [ 29.053439][ T101] usb 6-1: New USB device found, idVendor=07c0, idProduct=1501, bcdDevice=74.a0 [ 29.062991][ T101] usb 6-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 29.071761][ T1784] usb 5-1: config 0 interface 236 altsetting 0 endpoint 0x81 is Bulk; changing to Interrupt [ 29.082572][ T1784] usb 5-1: New USB device found, idVendor=07c0, idProduct=1501, bcdDevice=74.a0 [ 29.092162][ T1784] usb 5-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 29.101034][ T12] usb 4-1: config 0 interface 236 altsetting 0 endpoint 0x81 is Bulk; changing to Interrupt [ 29.111861][ T12] usb 4-1: New USB device found, idVendor=07c0, idProduct=1501, bcdDevice=74.a0 [ 29.121929][ T12] usb 4-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 29.132275][ T1784] usb 5-1: config 0 descriptor?? [ 29.137814][ T101] usb 6-1: config 0 descriptor?? [ 29.143934][ T12] usb 4-1: config 0 descriptor?? [ 29.149236][ T1778] usb 3-1: config 0 interface 236 altsetting 0 endpoint 0x81 is Bulk; changing to Interrupt [ 29.159836][ T1778] usb 3-1: New USB device found, idVendor=07c0, idProduct=1501, bcdDevice=74.a0 [ 29.169167][ T1778] usb 3-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 29.179635][ T1784] iowarrior 5-1:0.236: IOWarrior product=0x1501, serial= interface=236 now attached to iowarrior1 [ 29.195403][ T1778] usb 3-1: config 0 descriptor?? [ 29.201124][ T12] iowarrior 4-1:0.236: IOWarrior product=0x1501, serial= interface=236 now attached to iowarrior2 [ 29.212992][ T101] iowarrior 6-1:0.236: IOWarrior product=0x1501, serial= interface=236 now attached to iowarrior3 [ 29.233288][ T5] usb 2-1: config 0 descriptor?? [ 29.238955][ T1778] iowarrior 3-1:0.236: IOWarrior product=0x1501, serial= interface=236 now attached to iowarrior4 [ 29.293254][ T5] iowarrior 2-1:0.236: IOWarrior product=0x1501, serial= interface=236 now attached to iowarrior5 [ 29.354163][ T5] usb 1-1: USB disconnect, device number 2 [ 29.373037][ T5] iowarrior 1-1:0.236: I/O-Warror #0 now disconnected [ 29.379177][ T17] usb 5-1: USB disconnect, device number 2 [ 29.390342][ T17] iowarrior 5-1:0.236: I/O-Warror #1 now disconnected [ 29.399544][ T1778] usb 4-1: USB disconnect, device number 2 [ 29.401556][ T1788] usb 6-1: USB disconnect, device number 2 [ 29.414431][ T1788] iowarrior 6-1:0.236: I/O-Warror #3 now disconnected [ 29.423230][ T1778] iowarrior 4-1:0.236: I/O-Warror #2 now disconnected [ 29.433907][ T101] usb 3-1: USB disconnect, device number 2 [ 29.441322][ T101] iowarrior 3-1:0.236: I/O-Warror #4 now disconnected [ 29.493061][ T1801] usb 2-1: USB disconnect, device number 2 [ 29.500426][ T1801] iowarrior 2-1:0.236: I/O-Warror #5 now disconnected [ 29.741389][ T5] usb 1-1: new low-speed USB device number 3 using dummy_hcd [ 29.761498][ T17] usb 5-1: new low-speed USB device number 3 using dummy_hcd [ 29.781375][ T1788] usb 6-1: new low-speed USB device number 3 using dummy_hcd [ 29.791412][ T1778] usb 4-1: new low-speed USB device number 3 using dummy_hcd [ 29.811463][ T101] usb 3-1: new low-speed USB device number 3 using dummy_hcd [ 29.861301][ T1801] usb 2-1: new low-speed USB device number 3 using dummy_hcd [ 30.131429][ T17] usb 5-1: config 0 has an invalid interface number: 236 but max is 2 [ 30.131491][ T5] usb 1-1: config 0 has an invalid interface number: 236 but max is 2 [ 30.141018][ T17] usb 5-1: config 0 has an invalid descriptor of length 99, skipping remainder of the config [ 30.150306][ T5] usb 1-1: config 0 has an invalid descriptor of length 99, skipping remainder of the config [ 30.150316][ T5] usb 1-1: config 0 has 1 interface, different from the descriptor's value: 3 [ 30.150324][ T5] usb 1-1: config 0 has no interface number 0 [ 30.150562][ T5] usb 1-1: config 0 interface 236 altsetting 0 endpoint 0x81 is Bulk; changing to Interrupt [ 30.161202][ T17] usb 5-1: config 0 has 1 interface, different from the descriptor's value: 3 [ 30.172300][ T5] usb 1-1: New USB device found, idVendor=07c0, idProduct=1501, bcdDevice=74.a0 [ 30.182584][ T17] usb 5-1: config 0 has no interface number 0 [ 30.189155][ T5] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 30.201488][ T1788] usb 6-1: config 0 has an invalid interface number: 236 but max is 2 [ 30.214078][ T5] usb 1-1: config 0 descriptor?? [ 30.220134][ T1788] usb 6-1: config 0 has an invalid descriptor of length 99, skipping remainder of the config [ 30.251546][ T1778] usb 4-1: config 0 has an invalid interface number: 236 but max is 2 [ 30.251557][ T1778] usb 4-1: config 0 has an invalid descriptor of length 99, skipping remainder of the config [ 30.251567][ T1778] usb 4-1: config 0 has 1 interface, different from the descriptor's value: 3 [ 30.251574][ T1778] usb 4-1: config 0 has no interface number 0 [ 30.251597][ T1778] usb 4-1: config 0 interface 236 altsetting 0 endpoint 0x81 is Bulk; changing to Interrupt [ 30.251613][ T1778] usb 4-1: New USB device found, idVendor=07c0, idProduct=1501, bcdDevice=74.a0 [ 30.251629][ T1778] usb 4-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 30.263066][ T1788] usb 6-1: config 0 has 1 interface, different from the descriptor's value: 3 [ 30.263076][ T1788] usb 6-1: config 0 has no interface number 0 [ 30.263249][ T1788] usb 6-1: config 0 interface 236 altsetting 0 endpoint 0x81 is Bulk; changing to Interrupt [ 30.272180][ T101] usb 3-1: config 0 has an invalid interface number: 236 but max is 2 [ 30.282993][ T1788] usb 6-1: New USB device found, idVendor=07c0, idProduct=1501, bcdDevice=74.a0 [ 30.292122][ T101] usb 3-1: config 0 has an invalid descriptor of length 99, skipping remainder of the config [ 30.298906][ T1788] usb 6-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 30.310183][ T101] usb 3-1: config 0 has 1 interface, different from the descriptor's value: 3 [ 30.310192][ T101] usb 3-1: config 0 has no interface number 0 [ 30.315643][ T5] iowarrior 1-1:0.236: IOWarrior product=0x1501, serial= interface=236 now attached to iowarrior0 [ 30.320774][ T17] usb 5-1: config 0 interface 236 altsetting 0 endpoint 0x81 is Bulk; changing to Interrupt [ 30.330716][ T1778] usb 4-1: config 0 descriptor?? [ 30.338677][ T17] usb 5-1: New USB device found, idVendor=07c0, idProduct=1501, bcdDevice=74.a0 [ 30.346233][ T101] usb 3-1: config 0 interface 236 altsetting 0 endpoint 0x81 is Bulk; changing to Interrupt [ 30.356623][ T17] usb 5-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 30.366215][ T17] usb 5-1: config 0 descriptor?? [ 30.375053][ T101] usb 3-1: New USB device found, idVendor=07c0, idProduct=1501, bcdDevice=74.a0 [ 30.375067][ T101] usb 3-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 30.396457][ T1778] iowarrior 4-1:0.236: IOWarrior product=0x1501, serial= interface=236 now attached to iowarrior1 [ 30.406013][ T1788] usb 6-1: config 0 descriptor?? [ 30.411397][ T101] usb 3-1: config 0 descriptor?? [ 30.423672][ T1801] usb 2-1: config 0 has an invalid interface number: 236 but max is 2 [ 30.496879][ T101] iowarrior 3-1:0.236: IOWarrior product=0x1501, serial= interface=236 now attached to iowarrior2 tun: can't open /dev/net/tun: please enable CONFIG_TUN=y otherwise fuzzing or reproducing might not work as intended executing program [ 30.498160][ T1801] usb 2-1: config 0 has an invalid descriptor of length 99, skipping remainder of the config [ 30.498174][ T1801] usb 2-1: config 0 has 1 interface, different from the descriptor's value: 3 [ 30.498187][ T1801] usb 2-1: config 0 has no interface number 0 [ 30.528861][ T101] usb 1-1: USB disconnect, device number 3 [ 30.538094][ T1801] usb 2-1: config 0 interface 236 altsetting 0 endpoint 0x81 is Bulk; changing to Interrupt [ 30.556948][ T101] iowarrior 1-1:0.236: I/O-Warror #0 now disconnected tun: can't open /dev/net/tun: please enable CONFIG_TUN=y otherwise fuzzing or reproducing might not work as intended executing program [ 30.558980][ T1801] usb 2-1: New USB device found, idVendor=07c0, idProduct=1501, bcdDevice=74.a0 [ 30.558995][ T1801] usb 2-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 30.562361][ T1801] usb 2-1: config 0 descriptor?? [ 30.602928][ T1788] iowarrior 6-1:0.236: IOWarrior product=0x1501, serial= interface=236 now attached to iowarrior0 [ 30.616006][ T17] iowarrior 5-1:0.236: IOWarrior product=0x1501, serial= interface=236 now attached to iowarrior3 [ 30.621396][ T1778] usb 4-1: USB disconnect, device number 3 [ 30.636304][ T1778] iowarrior 4-1:0.236: I/O-Warror #1 now disconnected [ 30.654512][ T1801] iowarrior 2-1:0.236: IOWarrior product=0x1501, serial= interface=236 now attached to iowarrior1 tun: can't open /dev/net/tun: please enable CONFIG_TUN=y otherwise fuzzing or reproducing might not work as intended executing program [ 30.693259][ T5] usb 3-1: USB disconnect, device number 3 [ 30.702634][ T5] iowarrior 3-1:0.236: I/O-Warror #2 now disconnected tun: can't open /dev/net/tun: please enable CONFIG_TUN=y otherwise fuzzing or reproducing might not work as intended executing program tun: can't open /dev/net/tun: please enable CONFIG_TUN=y otherwise fuzzing or reproducing might not work as intended [ 30.785396][ T1801] usb 6-1: USB disconnect, device number 3 [ 30.802904][ T1801] ================================================================== [ 30.803540][ T12] usb 5-1: USB disconnect, device number 3 [ 30.811314][ T1801] BUG: KASAN: use-after-free in __mutex_lock+0xf23/0x1360 [ 30.811327][ T1801] Read of size 8 at addr ffff8881d2954f58 by task kworker/1:3/1801 [ 30.811330][ T1801] tun: can't open /dev/net/tun: please enable CONFIG_TUN=y otherwise fuzzing or reproducing might not work as intended [ 30.811343][ T1801] CPU: 1 PID: 1801 Comm: kworker/1:3 Not tainted 5.3.0-rc5+ #28 [ 30.811349][ T1801] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 30.811363][ T1801] Workqueue: usb_hub_wq hub_event [ 30.811369][ T1801] Call Trace: [ 30.811383][ T1801] dump_stack+0xca/0x13e [ 30.811393][ T1801] ? __mutex_lock+0xf23/0x1360 [ 30.811402][ T1801] ? __mutex_lock+0xf23/0x1360 [ 30.811421][ T1801] print_address_description+0x6a/0x32c [ 30.822387][ T12] iowarrior 5-1:0.236: I/O-Warror #3 now disconnected [ 30.824404][ T1801] ? __mutex_lock+0xf23/0x1360 [ 30.824416][ T1801] ? __mutex_lock+0xf23/0x1360 [ 30.824430][ T1801] __kasan_report.cold+0x1a/0x33 [ 30.824439][ T1801] ? __mutex_lock+0xf23/0x1360 [ 30.824455][ T1801] kasan_report+0xe/0x12 [ 30.853451][ T1784] usb 2-1: USB disconnect, device number 3 [ 30.857970][ T1801] __mutex_lock+0xf23/0x1360 [ 30.868502][ T1784] iowarrior 2-1:0.236: I/O-Warror #1 now disconnected [ 30.870344][ T1801] ? lock_downgrade+0x6e0/0x6e0 [ 30.870360][ T1801] ? iowarrior_disconnect+0xf0/0x2c0 [ 30.870372][ T1801] ? mutex_trylock+0x2c0/0x2c0 [ 30.870393][ T1801] ? mutex_trylock+0x2c0/0x2c0 [ 30.950241][ T1801] ? __mutex_unlock_slowpath+0xea/0x670 [ 30.956091][ T1801] ? wait_for_completion+0x3c0/0x3c0 [ 30.961571][ T1801] ? __down_timeout+0x2d0/0x2d0 [ 30.967169][ T1801] ? iowarrior_disconnect+0xf0/0x2c0 [ 30.973210][ T1801] iowarrior_disconnect+0xf0/0x2c0 [ 30.979036][ T1801] usb_unbind_interface+0x1bd/0x8a0 [ 30.984593][ T1801] ? usb_autoresume_device+0x60/0x60 [ 30.990341][ T1801] device_release_driver_internal+0x42f/0x500 [ 30.996945][ T1801] bus_remove_device+0x2dc/0x4a0 [ 31.002777][ T1801] device_del+0x420/0xb10 [ 31.008316][ T1801] ? __device_links_no_driver+0x240/0x240 [ 31.014681][ T1801] ? usb_remove_ep_devs+0x3e/0x80 [ 31.019891][ T1801] ? remove_intf_ep_devs+0x13f/0x1d0 [ 31.025605][ T1801] usb_disable_device+0x211/0x690 [ 31.031252][ T1801] usb_disconnect+0x284/0x8d0 [ 31.036508][ T1801] hub_event+0x1454/0x3640 [ 31.041108][ T1801] ? find_held_lock+0x2d/0x110 [ 31.046214][ T1801] ? mark_held_locks+0xe0/0xe0 [ 31.051294][ T1801] ? hub_port_debounce+0x260/0x260 [ 31.057898][ T1801] process_one_work+0x92b/0x1530 [ 31.063325][ T1801] ? pwq_dec_nr_in_flight+0x310/0x310 [ 31.069199][ T1801] ? do_raw_spin_lock+0x11a/0x280 [ 31.075282][ T1801] worker_thread+0x96/0xe20 [ 31.079984][ T1801] ? process_one_work+0x1530/0x1530 [ 31.085336][ T1801] kthread+0x318/0x420 [ 31.089666][ T1801] ? kthread_create_on_node+0xf0/0xf0 [ 31.095477][ T1801] ret_from_fork+0x24/0x30 [ 31.100628][ T1801] [ 31.103475][ T1801] Allocated by task 1788: [ 31.109281][ T1801] save_stack+0x1b/0x80 [ 31.114413][ T1801] __kasan_kmalloc.constprop.0+0xbf/0xd0 [ 31.122200][ T1801] iowarrior_probe+0x7a/0x10b2 [ 31.127224][ T1801] usb_probe_interface+0x305/0x7a0 [ 31.132977][ T1801] really_probe+0x281/0x6d0 [ 31.138112][ T1801] driver_probe_device+0x101/0x1b0 [ 31.143775][ T1801] __device_attach_driver+0x1c2/0x220 [ 31.149674][ T1801] bus_for_each_drv+0x162/0x1e0 [ 31.154780][ T1801] __device_attach+0x217/0x360 [ 31.159927][ T1801] bus_probe_device+0x1e4/0x290 [ 31.165090][ T1801] device_add+0xae6/0x16f0 [ 31.169712][ T1801] usb_set_configuration+0xdf6/0x1670 [ 31.175510][ T1801] generic_probe+0x9d/0xd5 [ 31.180105][ T1801] usb_probe_device+0x99/0x100 [ 31.185792][ T1801] really_probe+0x281/0x6d0 [ 31.191039][ T1801] driver_probe_device+0x101/0x1b0 [ 31.196896][ T1801] __device_attach_driver+0x1c2/0x220 [ 31.202714][ T1801] bus_for_each_drv+0x162/0x1e0 [ 31.208093][ T1801] __device_attach+0x217/0x360 [ 31.213130][ T1801] bus_probe_device+0x1e4/0x290 [ 31.218907][ T1801] device_add+0xae6/0x16f0 [ 31.224289][ T1801] usb_new_device.cold+0x6a4/0xe79 [ 31.230524][ T1801] hub_event+0x1b5c/0x3640 [ 31.235099][ T1801] process_one_work+0x92b/0x1530 [ 31.240504][ T1801] worker_thread+0x96/0xe20 [ 31.245824][ T1801] kthread+0x318/0x420 [ 31.250668][ T1801] ret_from_fork+0x24/0x30 [ 31.255299][ T1801] [ 31.257941][ T1801] Freed by task 1782: [ 31.262018][ T1801] save_stack+0x1b/0x80 [ 31.266847][ T1801] __kasan_slab_free+0x130/0x180 [ 31.272386][ T1801] kfree+0xe4/0x2f0 [ 31.276499][ T1801] iowarrior_release+0x187/0x280 [ 31.281945][ T1801] __fput+0x2d7/0x840 [ 31.286086][ T1801] task_work_run+0x13f/0x1c0 [ 31.291891][ T1801] exit_to_usermode_loop+0x1d2/0x200 [ 31.297228][ T1801] do_syscall_64+0x45f/0x580 [ 31.302135][ T1801] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 31.308358][ T1801] [ 31.310991][ T1801] The buggy address belongs to the object at ffff8881d2954f00 [ 31.310991][ T1801] which belongs to the cache kmalloc-512 of size 512 [ 31.326278][ T1801] The buggy address is located 88 bytes inside of [ 31.326278][ T1801] 512-byte region [ffff8881d2954f00, ffff8881d2955100) [ 31.341703][ T1801] The buggy address belongs to the page: [ 31.348291][ T1801] page:ffffea00074a5500 refcount:1 mapcount:0 mapping:ffff8881da002500 index:0x0 compound_mapcount: 0 [ 31.360080][ T1801] flags: 0x200000000010200(slab|head) [ 31.365608][ T1801] raw: 0200000000010200 0000000000000000 0000000900000001 ffff8881da002500 [ 31.375115][ T1801] raw: 0000000000000000 00000000000c000c 00000001ffffffff 0000000000000000 [ 31.384439][ T1801] page dumped because: kasan: bad access detected [ 31.391280][ T1801] [ 31.393816][ T1801] Memory state around the buggy address: [ 31.399663][ T1801] ffff8881d2954e00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 31.407984][ T1801] ffff8881d2954e80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 31.416911][ T1801] >ffff8881d2954f00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 31.425569][ T1801] ^ executing program [ 31.433289][ T1801] ffff8881d2954f80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 31.442005][ T1801] ffff8881d2955000: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 31.450284][ T1801] ================================================================== [ 31.458822][ T1801] Disabling lock debugging due to kernel taint [ 31.465356][ T1801] Kernel panic - not syncing: panic_on_warn set ... [ 31.472390][ T1801] CPU: 1 PID: 1801 Comm: kworker/1:3 Tainted: G B 5.3.0-rc5+ #28 [ 31.482357][ T1801] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 31.493306][ T1801] Workqueue: usb_hub_wq hub_event [ 31.498566][ T1801] Call Trace: [ 31.501856][ T1801] dump_stack+0xca/0x13e [ 31.506407][ T1801] panic+0x2a3/0x6da [ 31.510620][ T1801] ? add_taint.cold+0x16/0x16 [ 31.515513][ T1801] ? retint_kernel+0x10/0x10 [ 31.520321][ T1801] ? trace_hardirqs_on+0x55/0x1e0 [ 31.525573][ T1801] ? __mutex_lock+0xf23/0x1360 [ 31.530812][ T1801] end_report+0x43/0x49 [ 31.535339][ T1801] ? __mutex_lock+0xf23/0x1360 [ 31.540098][ T1801] __kasan_report.cold+0xd/0x33 [ 31.545073][ T1801] ? __mutex_lock+0xf23/0x1360 [ 31.550465][ T1801] kasan_report+0xe/0x12 [ 31.555142][ T1801] __mutex_lock+0xf23/0x1360 [ 31.559917][ T1801] ? lock_downgrade+0x6e0/0x6e0 [ 31.565592][ T1801] ? iowarrior_disconnect+0xf0/0x2c0 [ 31.571138][ T1801] ? mutex_trylock+0x2c0/0x2c0 [ 31.576250][ T1801] ? mutex_trylock+0x2c0/0x2c0 [ 31.581233][ T1801] ? __mutex_unlock_slowpath+0xea/0x670 [ 31.586825][ T1801] ? wait_for_completion+0x3c0/0x3c0 [ 31.592800][ T1801] ? __down_timeout+0x2d0/0x2d0 [ 31.598259][ T1801] ? iowarrior_disconnect+0xf0/0x2c0 [ 31.604005][ T1801] iowarrior_disconnect+0xf0/0x2c0 [ 31.609538][ T1801] usb_unbind_interface+0x1bd/0x8a0 [ 31.614798][ T1801] ? usb_autoresume_device+0x60/0x60 [ 31.620084][ T1801] device_release_driver_internal+0x42f/0x500 [ 31.627000][ T1801] bus_remove_device+0x2dc/0x4a0 [ 31.632008][ T1801] device_del+0x420/0xb10 [ 31.636499][ T1801] ? __device_links_no_driver+0x240/0x240 [ 31.642599][ T1801] ? usb_remove_ep_devs+0x3e/0x80 [ 31.647711][ T1801] ? remove_intf_ep_devs+0x13f/0x1d0 [ 31.653177][ T1801] usb_disable_device+0x211/0x690 [ 31.658518][ T1801] usb_disconnect+0x284/0x8d0 [ 31.663173][ T1801] hub_event+0x1454/0x3640 [ 31.667844][ T1801] ? find_held_lock+0x2d/0x110 [ 31.673605][ T1801] ? mark_held_locks+0xe0/0xe0 [ 31.678616][ T1801] ? hub_port_debounce+0x260/0x260 [ 31.684376][ T1801] process_one_work+0x92b/0x1530 [ 31.689488][ T1801] ? pwq_dec_nr_in_flight+0x310/0x310 [ 31.695109][ T1801] ? do_raw_spin_lock+0x11a/0x280 [ 31.700290][ T1801] worker_thread+0x96/0xe20 [ 31.704787][ T1801] ? process_one_work+0x1530/0x1530 [ 31.710064][ T1801] kthread+0x318/0x420 [ 31.714118][ T1801] ? kthread_create_on_node+0xf0/0xf0 [ 31.719809][ T1801] ret_from_fork+0x24/0x30 [ 31.726095][ T1801] Kernel Offset: disabled [ 31.730731][ T1801] Rebooting in 86400 seconds..