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 '10.128.1.41' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   34.815569][   T21] usb 1-1: new high-speed USB device number 2 using dummy_hcd
[   35.055524][   T21] usb 1-1: Using ep0 maxpacket: 16
[   35.175638][   T21] usb 1-1: config 0 has an invalid interface number: 188 but max is 0
[   35.183899][   T21] usb 1-1: config 0 has no interface number 0
[   35.190110][   T21] usb 1-1: config 0 interface 188 altsetting 2 bulk endpoint 0xB has invalid maxpacket 0
[   35.199981][   T21] usb 1-1: config 0 interface 188 altsetting 2 bulk endpoint 0x8A has invalid maxpacket 32
[   35.210249][   T21] usb 1-1: config 0 interface 188 has no altsetting 0
[   35.217292][   T21] usb 1-1: New USB device found, idVendor=10cf, idProduct=5502, bcdDevice=f5.5f
[   35.226456][   T21] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[   35.236045][   T21] usb 1-1: config 0 descriptor??
[   35.280259][   T21] kasan: CONFIG_KASAN_INLINE enabled
[   35.285753][   T21] kasan: GPF could be caused by NULL-ptr deref or user memory access
[   35.293821][   T21] general protection fault: 0000 [#1] SMP KASAN
[   35.300045][   T21] CPU: 1 PID: 21 Comm: kworker/1:1 Not tainted 5.3.0-rc2+ #25
[   35.307477][   T21] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   35.317525][   T21] Workqueue: usb_hub_wq hub_event
[   35.322543][   T21] RIP: 0010:vmk80xx_write_packet+0x75/0x260
[   35.328466][   T21] 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
[   35.348312][   T21] RSP: 0018:ffff8881da2f7268 EFLAGS: 00010202
[   35.354500][   T21] RAX: dffffc0000000000 RBX: ffff8881d4389600 RCX: 0000000000000000
[   35.362458][   T21] RDX: 0000000000000002 RSI: ffffffff8471acc3 RDI: ffff8881d4389668
[   35.370422][   T21] RBP: ffff8881d2f08f00 R08: ffff8881da236000 R09: 0000000000000010
[   35.378376][   T21] R10: fffffbfff11acda0 R11: ffffffff88d66d07 R12: ffff8881d634aa80
[   35.386329][   T21] R13: 0000000000000010 R14: 0000000000000000 R15: ffff8881d4939c08
[   35.394430][   T21] FS:  0000000000000000(0000) GS:ffff8881db300000(0000) knlGS:0000000000000000
[   35.403430][   T21] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   35.409989][   T21] CR2: 00007f48a95f8000 CR3: 00000001d299c000 CR4: 00000000001406e0
[   35.417935][   T21] Call Trace:
[   35.421312][   T21]  vmk80xx_auto_attach+0x13b1/0x17c0
[   35.432427][   T21]  comedi_auto_config+0x16e/0x240
[   35.437430][   T21]  usb_probe_interface+0x305/0x7a0
[   35.442679][   T21]  ? usb_probe_device+0x100/0x100
[   35.447685][   T21]  really_probe+0x281/0x650
[   35.452163][   T21]  driver_probe_device+0x101/0x1b0
[   35.457395][   T21]  __device_attach_driver+0x1c2/0x220
[   35.462748][   T21]  ? driver_allows_async_probing+0x160/0x160
[   35.468707][   T21]  bus_for_each_drv+0x15c/0x1e0
[   35.473552][   T21]  ? bus_rescan_devices+0x20/0x20
[   35.478660][   T21]  ? _raw_spin_unlock_irqrestore+0x3e/0x50
[   35.484440][   T21]  ? lockdep_hardirqs_on+0x379/0x580
[   35.489970][   T21]  __device_attach+0x217/0x360
[   35.494720][   T21]  ? device_bind_driver+0xd0/0xd0
[   35.499722][   T21]  ? kobject_uevent_env+0x29e/0x1160
[   35.504977][   T21]  ? kobject_uevent_env+0x2a8/0x1160
[   35.510231][   T21]  bus_probe_device+0x1e4/0x290
[   35.515055][   T21]  ? blocking_notifier_call_chain+0x54/0xa0
[   35.520914][   T21]  device_add+0xae6/0x16f0
[   35.525370][   T21]  ? uevent_store+0x50/0x50
[   35.529857][   T21]  ? _raw_spin_unlock_irqrestore+0x3e/0x50
[   35.535638][   T21]  usb_set_configuration+0xdf6/0x1670
[   35.540985][   T21]  generic_probe+0x9d/0xd5
[   35.545459][   T21]  usb_probe_device+0x99/0x100
[   35.550212][   T21]  ? usb_suspend+0x620/0x620
[   35.554783][   T21]  really_probe+0x281/0x650
[   35.559310][   T21]  driver_probe_device+0x101/0x1b0
[   35.564402][   T21]  __device_attach_driver+0x1c2/0x220
[   35.569745][   T21]  ? driver_allows_async_probing+0x160/0x160
[   35.575701][   T21]  bus_for_each_drv+0x15c/0x1e0
[   35.580532][   T21]  ? bus_rescan_devices+0x20/0x20
[   35.585531][   T21]  ? _raw_spin_unlock_irqrestore+0x3e/0x50
[   35.591309][   T21]  ? lockdep_hardirqs_on+0x379/0x580
[   35.596573][   T21]  __device_attach+0x217/0x360
[   35.601312][   T21]  ? device_bind_driver+0xd0/0xd0
[   35.606309][   T21]  ? kobject_uevent_env+0x29e/0x1160
[   35.611573][   T21]  ? kobject_uevent_env+0x2a8/0x1160
[   35.616839][   T21]  bus_probe_device+0x1e4/0x290
[   35.621665][   T21]  ? blocking_notifier_call_chain+0x54/0xa0
[   35.627535][   T21]  device_add+0xae6/0x16f0
[   35.631925][   T21]  ? uevent_store+0x50/0x50
[   35.636451][   T21]  usb_new_device.cold+0x6a4/0xe79
[   35.641541][   T21]  hub_event+0x1b5c/0x3640
[   35.646051][   T21]  ? hub_port_debounce+0x260/0x260
[   35.651145][   T21]  process_one_work+0x92b/0x1530
[   35.656072][   T21]  ? pwq_dec_nr_in_flight+0x310/0x310
[   35.661422][   T21]  ? do_raw_spin_lock+0x11a/0x280
[   35.666478][   T21]  worker_thread+0x96/0xe20
[   35.670973][   T21]  ? process_one_work+0x1530/0x1530
[   35.676194][   T21]  kthread+0x318/0x420
[   35.680251][   T21]  ? kt