Klever

ldv_usb_alloc_urb should return memory initialized with zeroes.
Instead of arbitrary memory

 /* NOTE Choose an arbitrary memory location. */
32 void *arbitrary_memory = ldv_undef_ptr();

See example of false unsafe
http://ldvstore:8998/marks/unsafe/create/75882/
where usb_unanchor_urb should not do usb_put_urb, because urb->anchor should be zero
Usb_alloc_urb initializes urb with zeros and usb_anchor_urb was not called.