GSD-2021-1001454 jfs: fix GPF in diFree

jfs: fix GPF in diFree 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 v4.9.276 by commit 745c9a59422c63f661f4374ed5181740db4130a1. For more...