nilfs2: fix use-after-free bug of struct nilfs_root
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 v5.4.220 by commit d1c2d820a2cd73867b7d352e89e92fb3ac29e926. For more details please see the references link.