nilfs2: fix general protection fault in nilfsbtreeinsert()
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 v4.19.271 by commit d9fde9eab1766170ff2ade67d09178d2cfd78749. For more details please see the references link.