userfaultfd: release page in error path to avoid BUG_ON
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 v5.4.120 by commit b3f1731c6d7fbc1ebe3ed8eff6d6bec56d76ff43, it was introduced in version v4.11 by commit cb658a453b9327ce96ce5222c24d162b5b65b564. For more details please see the references link.