Warning: Permanently added '10.128.1.48' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   24.317445][   T22] usb 1-1: new high-speed USB device number 2 using dummy_hcd
[   24.556959][   T22] usb 1-1: Using ep0 maxpacket: 8
[   24.677089][   T22] usb 1-1: config 0 interface 0 altsetting 0 bulk endpoint 0x3 has invalid maxpacket 0
[   24.686968][   T22] usb 1-1: config 0 interface 0 altsetting 0 bulk endpoint 0x84 has invalid maxpacket 0
[   24.696693][   T22] usb 1-1: New USB device found, idVendor=10cf, idProduct=5500, bcdDevice=c4.b2
[   24.705903][   T22] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[   24.715082][   T22] usb 1-1: config 0 descriptor??
[   24.761105][   T22] kasan: CONFIG_KASAN_INLINE enabled
[   24.766526][   T22] kasan: GPF could be caused by NULL-ptr deref or user memory access
[   24.774746][   T22] general protection fault: 0000 [#1] SMP KASAN
[   24.780972][   T22] CPU: 1 PID: 22 Comm: kworker/1:1 Not tainted 5.4.0-rc5+ #0
[   24.788356][   T22] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   24.798390][   T22] Workqueue: usb_hub_wq hub_event
[   24.803390][   T22] RIP: 0010:vmk80xx_write_packet+0x75/0x260
[   24.809256][   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
[   24.828833][   T22] RSP: 0018:ffff8881d932f218 EFLAGS: 00010202
[   24.834876][   T22] RAX: dffffc0000000000 RBX: ffff8881d0157200 RCX: 0000000000000000
[   24.842855][   T22] RDX: 0000000000000002 RSI: ffffffff846ff123 RDI: ffff8881d0157268
[   24.850958][   T22] RBP: ffff8881cf867800 R08: ffff8881da24e000 R09: 0000000000000010
[   24.859470][   T22] R10: fffffbfff11ab3b4 R11: ffffffff88d59da7 R12: ffff8881cf4f2000
[   24.867411][   T22] R13: 0000000000000010 R14: 0000000000000000 R15: ffff8881d1848b88
[   24.875459][   T22] FS:  0000000000000000(0000) GS:ffff8881db300000(0000) knlGS:0000000000000000
[   24.884367][   T22] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   24.890928][   T22] CR2: 00007f531d64f000 CR3: 00000001d361f000 CR4: 00000000001406e0
[   24.899018][   T22] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   24.906967][   T22] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   24.914916][   T22] Call Trace:
[   24.918201][   T22]  vmk80xx_auto_attach+0x13b1/0x17c0
[   24.923477][   T22]  comedi_auto_config+0x16e/0x250
[   24.928477][   T22]  usb_probe_interface+0x305/0x7a0
[   24.933559][   T22]  ? usb_probe_device+0x100/0x100
[   24.938568][   T22]  really_probe+0x281/0x6d0
[   24.943043][   T22]  driver_probe_device+0x104/0x210
[   24.948139][   T22]  __device_attach_driver+0x1c2/0x220
[   24.953494][   T22]  ? driver_allows_async_probing+0x160/0x160
[   24.959444][   T22]  bus_for_each_drv+0x162/0x1e0
[   24.965224][   T22]  ? bus_rescan_devices+0x20/0x20
[   24.970234][   T22]  ? _raw_spin_unlock_irqrestore+0x3e/0x50
[   24.976013][   T22]  ? lockdep_hardirqs_on+0x382/0x580
[   24.981268][   T22]  __device_attach+0x217/0x360
[   24.986009][   T22]  ? device_bind_driver+0xd0/0xd0
[   24.991017][   T22]  ? kobject_uevent_env+0x29e/0x1160
[   24.996285][   T22]  ? kobject_uevent_env+0x2a8/0x1160
[   25.001541][   T22]  bus_probe_device+0x1e4/0x290
[   25.006365][   T22]  ? blocking_notifier_call_chain+0x54/0xa0
[   25.012229][   T22]  device_add+0xae6/0x16f0
[   25.016617][   T22]  ? uevent_store+0x50/0x50
[   25.021094][   T22]  ? _raw_spin_unlock_irqrestore+0x3e/0x50
[   25.026874][   T22]  usb_set_configuration+0xdf6/0x1670
[   25.032230][   T22]  generic_probe+0x9d/0xd5
[   25.036617][   T22]  usb_probe_device+0x99/0x100
[   25.041354][   T22]  ? usb_suspend+0x620/0x620
[   25.045915][   T22]  really_probe+0x281/0x6d0
[   25.050403][   T22]  driver_probe_device+0x104/0x210
[   25.055484][   T22]  __device_attach_driver+0x1c2/0x220
[   25.060825][   T22]  ? driver_allows_async_probing+0x160/0x160
[   25.066776][   T22]  bus_for_each_drv+0x162/0x1e0
[   25.071604][   T22]  ? bus_rescan_devices+0x20/0x20
[   25.076600][   T22]  ? _raw_spin_unlock_irqrestore+0x3e/0x50
[   25.082395][   T22]  ? lockdep_hardirqs_on+0x382/0x580
[   25.087662][   T22]  __device_attach+0x217/0x360
[   25.092406][   T22]  ? device_bind_driver+0xd0/0xd0
[   25.097444][   T22]  ? kobject_uevent_env+0x29e/0x1160
[   25.102707][   T22]  ? kobject_uevent_env+0x2a8/0x1160
[   25.108231][   T22]  bus_probe_device+0x1e4/0x290
[   25.113061][   T22]  ? blocking_notifier_call_chain+0x54/0xa0
[   25.124745][   T22]  device_add+0xae6/0x16f0
[   25.129135][   T22]  ? uevent_store+0x50/0x50
[   25.133611][   T22]  usb_new_device.cold+0x6a4/0xe79
[   25.138693][   T22]  hub_event+0x1df8/0x3800
[   25.143084][   T22]  ? hub_port_debounce+0x260/0x260
[   25.148180][   T22]  ? find_held_lock+0x2d/0x110
[   25.152914][   T22]  ? mark_held_locks+0xe0/0xe0
[   25.157655][   T22]  ? rcu_read_lock_sched_held+0x9c/0xd0
[   25.163171][   T22]  ? rcu_read_lock_bh_held+0xb0/0xb0
[   25.168428][   T22]  process_one_work+0x92b/0x1530
[   25.173337][   T22]  ? pwq_dec_nr_in_flight+0x310/0x310
[   25.178683][   T22]  ? do_raw_spin_lock+0x11a/0x280
[   25.183678][   T22]  worker_thread+0x96/0xe20
[   25.188166][   T22]  ? process_one_work+0x1530/0x1530
[   25.193332][   T22]  kthread+0x318/0x420
[   25.197372][   T22]  ? kthread_create_on_node+0xf0/0xf0
[   25.202718][   T22]  ret_from_fork+0x24/0x30
[   25.207111][   T22] Modules linked in:
[   25.211079][   T22] ---[