mm, hugetlb: fix simple resvhugepages underflow on UFFDIO_COPY
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 v5.4.125 by commit 14fd3da3e8d3de7f34d69dd4bfa5fd9e73d99911, it was introduced in version v4.11 by commit 8fb5debc5fcd450470cdd789c2d80ef95ebb8cf4. For more details please see the references link.