nbd: call genlunregisterfamily() first in nbd_cleanup()
This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v4.19.247 by commit 013a79f1b5c89290e2e97f1ebf14b14e0cf5fe5c. For more details please see the references link.