GSD-2022-1002592 ext4: avoid cycles in directory h-tree

ext4: avoid cycles in directory h-tree 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 v5.18.3 by commit 6084240bfc44bf265ab6ae7d96980469b05be0f...