[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. [ 15.900696][ C1] random: crng init done [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.162' (ECDSA) to the list of known hosts. syzkaller login: [ 27.914356][ T12] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 28.154294][ T12] usb 1-1: Using ep0 maxpacket: 8 [ 28.274465][ T12] usb 1-1: config 0 interface 0 altsetting 0 endpoint 0xB has wMaxPacketSize 0, skipping [ 28.284870][ T12] usb 1-1: config 0 interface 0 altsetting 0 bulk endpoint 0x8A has invalid maxpacket 874 [ 28.374534][ T12] usb 1-1: New USB device found, idVendor=2040, idProduct=200a, bcdDevice=8a.69 [ 28.383598][ T12] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=2 [ 28.391863][ T12] usb 1-1: SerialNumber: syz [ 28.397859][ T12] usb 1-1: config 0 descriptor?? [ 28.414679][ T1721] raw: raw_ioctl_ep_enable: fail, usb_ep_enable returned -22 [ 28.436121][ T12] smsusb:smsusb_probe: board id=9, interface number 0 [ 28.475882][ T12] smsusb:siano_media_device_register: media controller created [ 28.485927][ T12] smsmdtv:smscore_sendrequest_and_wait: sendrequest returned error -22 [ 28.494346][ T12] smsmdtv:smscore_set_device_mode: mode detect failed -22 [ 28.501437][ T12] smsmdtv:smscore_start_device: set device mode failed , rc -22 [ 28.509246][ C0] smsusb:smsusb_onresponse: error, urb status -71, 0 bytes [ 28.509374][ C0] smsusb:smsusb_onresponse: error, urb status -71, 0 bytes [ 28.509394][ C0] smsusb:smsusb_onresponse: error, urb status -71, 0 bytes [ 28.509444][ C0] smsusb:smsusb_onresponse: error, urb status -71, 0 bytes [ 28.509469][ C0] smsusb:smsusb_onresponse: error, urb status -71, 0 bytes [ 28.509491][ C0] smsusb:smsusb_onresponse: error, urb status -71, 0 bytes [ 28.509516][ C0] smsusb:smsusb_onresponse: error, urb status -71, 0 bytes [ 28.509538][ C0] smsusb:smsusb_onresponse: error, urb status -71, 0 bytes [ 28.509561][ C0] smsusb:smsusb_onresponse: error, urb status -71, 0 bytes [ 28.509585][ C0] smsusb:smsusb_onresponse: error, urb status -71, 0 bytes [ 28.583236][ T12] smsusb:smsusb_init_device: smscore_start_device(...) failed [ 28.591396][ T12] ------------[ cut here ]------------ [ 28.596913][ T12] ODEBUG: free active (active state 0) object type: work_struct hint: do_submit_urb+0x0/0x60 [ 28.607180][ T12] WARNING: CPU: 0 PID: 12 at lib/debugobjects.c:481 debug_print_object+0x160/0x250 [ 28.616476][ T12] Kernel panic - not syncing: panic_on_warn set ... [ 28.623069][ T12] CPU: 0 PID: 12 Comm: kworker/0:1 Not tainted 5.4.0-rc6+ #0 [ 28.630499][ T12] Hardware name: Google Google Compute Engine/Google Comp