mm, compaction: fix fastisolatearound() to stay within boundaries
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 v5.15.87 by commit 35d8a89862e69f743715613d4751a08094e6aa1c, it was introduced in version v5.12 by commit 6e2b7044c199229a3d20cefbd3184968238c4184. For more details please see the references link.