Warning: Permanently added '10.128.0.43' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 55.209967][ T22] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 55.449834][ T22] usb 1-1: Using ep0 maxpacket: 8 [ 55.569996][ T22] usb 1-1: config 0 has an invalid interface number: 57 but max is 0 [ 55.578486][ T22] usb 1-1: config 0 has no interface number 0 [ 55.585321][ T22] usb 1-1: config 0 interface 57 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 0 [ 55.596202][ T22] usb 1-1: config 0 interface 57 altsetting 0 bulk endpoint 0x2 has invalid maxpacket 0 [ 55.606478][ T22] usb 1-1: New USB device found, idVendor=10cf, idProduct=5500, bcdDevice=93.27 [ 55.615873][ T22] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 55.625660][ T22] usb 1-1: config 0 descriptor?? [ 55.674803][ T22] kasan: CONFIG_KASAN_INLINE enabled [ 55.680708][ T22] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 55.688947][ T22] general protection fault: 0000 [#1] SMP KASAN [ 55.695371][ T22] CPU: 1 PID: 22 Comm: kworker/1:1 Not tainted 5.4.0-rc1+ #0 [ 55.703220][ T22] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 55.713500][ T22] Workqueue: usb_hub_wq hub_event [ 55.718545][ T22] RIP: 0010:vmk80xx_write_packet+0x75/0x260 [ 55.724631][ T22] 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 [ 55.744863][ T22] RSP: 0018:ffff8881d968f258 EFLAGS: 00010202 [ 55.751089][ T22] RAX: dffffc0000000000 RBX: ffff8881d4426840 RCX: 0000000000000000 [ 55.763019][ T22] RDX: 0000000000000002 RSI: ffffffff8472d243 RDI: ffff8881d44268a8 [ 55.771481][ T22] RBP: ffff8881d37fd900 R08: ffff8881da236000 R09: 0000000000000010 [ 55.779876][ T22] R10: fffffbfff11b25b4 R11: ffffffff88d92da7 R12: ffff8881d9173b80 [ 55.787841][ T22] R13: 0000000000000010 R14: 0000000000000000 R15: ffff8881d50c3cc8 [ 55.795865][ T22] FS: 0000000000000000(0000) GS:ffff8881db300000(0000) knlGS:0000000000000000 [ 55.804878][ T22] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 55.811576][ T22] CR2: 00007f964d494000 CR3: 00000001d4720000 CR4: 00000000001406e0 [ 55.821980][ T22] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 55.830046][ T22] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 55.838061][ T22] Call Trace: [ 55.841767][ T22] vmk80xx_auto_attach+0x13b1/0x17c0 [ 55.847207][ T22] comedi_auto_config+0x16e/0x250 [ 55.852502][ T22] usb_probe_interface+0x305/0x7a0 [ 55.857751][ T22] ? usb_probe_device+0x100/0x100 [ 55.862871][ T22] really_probe+0x281/0x6d0 [ 55.867680][ T22] driver_probe_device+0x104/0x210 [ 55.872946][ T22] __device_attach_driver+0x1c2/0x220 [ 55.878370][ T22] ? driver_allows_async_probing+0x160/0x160 [ 55.884369][ T22] bus_for_each_drv+0x162/0x1e0 [ 55.889232][ T22] ? bus_rescan_devices+0x20/0x20 [ 55.894520][ T22] ? _raw_spin_unlock_irqrestore+0x3e/0x50 [ 55.900412][ T22] ? lockdep_hardirqs_on+0x382/0x580 [ 55.905703][ T22] __device_attach+0x217/0x360 [ 55.911077][ T22] ? device_bind_driver+0xd0/0xd0 [ 55.916322][ T22] ? kobject_uevent_env+0x29e/0x1150 [ 55.921628][ T22] ? kobject_uevent_env+0x2a8/0x1150 [ 55.927067][ T22] bus_probe_device+0x1e4/0x290 [ 55.931916][ T22] ? blocking_notifier_call_chain+0x54/0xa0 [ 55.938199][ T22] device_add+0xae6/0x16f0 [ 55.942909][ T22] ? uevent_store+0x50/0x50 [ 55.947600][ T22] ? _raw_spin_unlock_irqrestore+0x3e/0x50 [ 55.953551][ T22] usb_set_configuration+0xdf6/0x1670 [ 55.959018][ T22] generic_probe+0x9d/0xd5 [ 55.963543][ T22] usb_probe_device+0x99/0x100 [ 55.968336][ T22] ? usb_suspend+0x620/0x620 [ 55.973407][ T22] really_probe+0x281/0x6d0 [ 55.978125][ T22] driver_probe_device+0x104/0x210 [ 55.983584][ T22] __device_attach_driver+0x1c2/0x220 [ 55.989313][ T22] ? driver_allows_async_probing+0x160/0x160 [ 55.996370][ T22] bus_for_each_drv+0x162/0x1e0 [ 56.001528][ T22] ? bus_rescan_devices+0x20/0x20 [ 56.006751][ T22] ? _raw_spin_unlock_irqrestore+0x3e/0x50 [ 56.012683][ T22] ? lockdep_hardirqs_on+0x382/0x580 [ 56.017955][ T22] __device_attach+0x217/0x360 [ 56.022889][ T22] ? device_bind_driver+0xd0/0xd0 [ 56.028056][ T22] ? kobject_uevent_env+0x29e/0x1150 [ 56.033581][ T22] ? kobject_uevent_env+0x2a8/0x1150 [ 56.038899][ T22] bus_probe_device+0x1e4/0x290 [ 56.043840][ T22] ? blocking_notifier_call_chain+0x54/0xa0 [ 56.049858][ T22] device_add+0xae6/0x16f0 [ 56.054273][ T22] ? uevent_store+0x50/0x50 [ 56.058977][ T22] usb_new_device.cold+0x6a4/0xe79 [ 56.064285][ T22] hub_event+0x1b5c/0x3640 [ 56.068916][ T22] ? hub_port_debounce+0x260/0x260 [ 56.074031][ T22] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 56.079828][ T22] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 56.085200][ T22] process_one_work+0x92b/0x1530 [ 56.090132][ T22] ? pwq_dec_nr_in_flight+0x310/0x310 [ 56.095551][ T22] ? do_raw_spin_lock+0x11a/0x280 [ 56.100729][ T22] worker_thread+0x96/0xe20 [ 56.105400][ T22] ? process_one_work+0x1530/0x1530 [ 56.110777][ T22] kthread+0x318/0x420 [ 56.115799][ T22] ? kthread_create_on_node+0xf0/0xf0 [ 56.121288][ T22] ret_from_fork+0x24/0x30 [ 56.125837