Warning: Permanently added '10.128.0.255' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 37.816713][ T12] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 38.056698][ T12] usb 1-1: Using ep0 maxpacket: 16 [ 38.176782][ T12] usb 1-1: config 0 has an invalid interface number: 129 but max is 0 [ 38.185158][ T12] usb 1-1: config 0 has no interface number 0 [ 38.191666][ T12] usb 1-1: config 0 interface 129 altsetting 0 bulk endpoint 0x9 has invalid maxpacket 0 [ 38.201538][ T12] usb 1-1: config 0 interface 129 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 0 [ 38.211845][ T12] usb 1-1: New USB device found, idVendor=10cf, idProduct=5501, bcdDevice=da.ce [ 38.221135][ T12] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 38.230534][ T12] usb 1-1: config 0 descriptor?? [ 38.269344][ T12] kasan: CONFIG_KASAN_INLINE enabled [ 38.274674][ T12] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 38.282802][ T12] general protection fault: 0000 [#1] SMP KASAN [ 38.289036][ T12] CPU: 0 PID: 12 Comm: kworker/0:1 Not tainted 5.2.0-rc6+ #14 [ 38.296532][ T12] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 38.306590][ T12] Workqueue: usb_hub_wq hub_event [ 38.311722][ T12] RIP: 0010:vmk80xx_write_packet+0x75/0x260 [ 38.317677][ T12] Code: 48 8d 7b 68 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 d3 01 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 6b 68 4c 89 ea 48 c1 ea 03 <0f> b6 04 02 4c 89 ea 83 e2 07 38 d0 7f 08 84 c0 0f 85 84 01 00 00 [ 38.337608][ T12] RSP: 0018:ffff8881d9e0f1b0 EFLAGS: 00010202 [ 38.343840][ T12] RAX: dffffc0000000000 RBX: ffff8881d4855f00 RCX: 0000000000000000 [ 38.351800][ T12] RDX: 0000000000000002 RSI: ffffffff847cf773 RDI: ffff8881d4855f68 [ 38.359758][ T12] RBP: ffff8881d05f4500 R08: ffff8881d9df9800 R09: 0000000000000010 [ 38.367720][ T12] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8881d0db5d80 [ 38.375792][ T12] R13: 0000000000000010 R14: 0000000000000000 R15: ffff8881d0c5d848 [ 38.383755][ T12] FS: 0000000000000000(0000) GS:ffff8881db200000(0000) knlGS:0000000000000000 [ 38.392674][ T12] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 38.399250][ T12] CR2: 00007f960c93b000 CR3: 00000001d94fd000 CR4: 00000000001406f0 [ 38.407368][ T12] Call Trace: [ 38.410692][ T12] vmk80xx_auto_attach+0x13b1/0x17c0 [ 38.415970][ T12] comedi_auto_config+0x16e/0x250 [ 38.420984][ T12] usb_probe_interface+0x305/0x7a0 [ 38.426082][ T12] ? usb_probe_device+0x100/0x100 [ 38.431086][ T12] really_probe+0x281/0x660 [ 38.435597][ T12] driver_probe_device+0x104/0x210 [ 38.440698][ T12] __device_attach_driver+0x1c2/0x220 [ 38.446056][ T12] ? driver_allows_async_probing+0x160/0x160 [ 38.452152][ T12] bus_for_each_drv+0x15c/0x1e0 [ 38.457087][ T12] ? bus_rescan_devices+0x20/0x20 [ 38.462136][ T12] ? _raw_spin_unlock_irqrestore+0x3e/0x50 [ 38.467926][ T12] ? lockdep_hardirqs_on+0x379/0x580 [ 38.473369][ T12] __device_attach+0x217/0x360 [ 38.478118][ T12] ? device_bind_driver+0xd0/0xd0 [ 38.483165][ T12] ? kobject_uevent_env+0x29e/0x1150 [ 38.488477][ T12] ? kobject_uevent_env+0x2a8/0x1150 [ 38.493856][ T12] bus_probe_device+0x1e4/0x290 [ 38.498833][ T12] ? blocking_notifier_call_chain+0x54/0xa0 [ 38.504712][ T12] device_add+0xae6/0x16f0 [ 38.509114][ T12] ? uevent_store+0x50/0x50 [ 38.513608][ T12] ? _raw_spin_unlock_irqrestore+0x3e/0x50 [ 38.519402][ T12] usb_set_configuration+0xdf6/0x1670 [ 38.524760][ T12] generic_probe+0x9d/0xd5 [ 38.529225][ T12] usb_probe_device+0x99/0x100 [ 38.534046][ T12] ? usb_suspend+0x620/0x620 [ 38.538625][ T12] really_probe+0x281/0x660 [ 38.543115][ T12] driver_probe_device+0x104/0x210 [ 38.548409][ T12] __device_attach_driver+0x1c2/0x220 [ 38.553778][ T12] ? driver_allows_async_probing+0x160/0x160 [ 38.559752][ T12] bus_for_each_drv+0x15c/0x1e0 [ 38.564595][ T12] ? bus_rescan_devices+0x20/0x20 [ 38.569676][ T12] ? _raw_spin_unlock_irqrestore+0x3e/0x50 [ 38.575509][ T12] ? lockdep_hardirqs_on+0x379/0x580 [ 38.580790][ T12] __device_attach+0x217/0x360 [ 38.585542][ T12] ? device_bind_driver+0xd0/0xd0 [ 38.590559][ T12] ? kobject_uevent_env+0x29e/0x1150 [ 38.595868][ T12] ? kobject_uevent_env+0x2a8/0x1150 [ 38.601135][ T12] bus_probe_device+0x1e4/0x290 [ 38.605977][ T12] ? blocking_notifier_call_chain+0x54/0xa0 [ 38.611864][ T12] device_add+0xae6/0x16f0 [ 38.616264][ T12] ? uevent_store+0x50/0x50 [ 38.620751][ T12] usb_new_device.cold+0x8c1/0x1016 [ 38.625947][ T12] ? usb_port_suspend+0xa40/0xa40 [ 38.631084][ T12] ? mark_held_locks+0x9f/0xe0 [ 38.635832][ T12] ? _raw_spin_unlock_irq+0x24/0x30 [ 38.641074][ T12] hub_event+0x1b3d/0x35f0 [ 38.645712][ T12] ? hub_port_debounce+0x260/0x260 [ 38.651747][ T12] process_one_work+0x905/0x1570 [ 38.656712][ T12] ? pwq_dec_nr_in_flight+0x310/0x310 [ 38.662107][ T12] ? do_raw_spin_lock+0x11a/0x280 [ 38.667118][ T12] worker_thread+0x96/0xe20 [ 38.671769][ T12] ? process_one_work+0x1570/0x1570 [ 38.676959][ T12] kthread+0x30b/0x410 [ 38.681014][ T12] ? kthread_park+0x1a0/0x1a0 [ 38.685715][ T12] ret_from_fork+0x24/0x30 [ 38.690110][ T12] Modules linked in: [ 38.694081][ T12] ---[ end trace 18f49aeea1a81489 ]--- [ 38.699569][ T12] RIP: 0010:vmk80xx_write_packet+0x75/0x260 [ 38.699640][ T1731] usb-fuzzer-gadget dummy_udc.0: unregistering UDC driver [USB fuzzer] [ 38.705456][ T12] Code: 48 8d 7b 68 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 d3 01