nilfs2: fix use-after-free bug of ns_writer on remount
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 v4.14.300 by commit 39a3ed68270b079c6b874d4e4727a512b9b4882c. For more details please see the references link.