Description: gfs2: Fix kernel NULL pointer dereference in gfs2_rgrp_dump
References:
Notes:
 carnil> Introduced by 72244b6bc752 ("gfs2: improve debug information
 carnil> when lvb mismatches are found") 4.20-rc1.
Bugs:
upstream: released (6.8-rc1) [8877243beafa7c6bfc42022cbfdf9e39b25bd4fa]
6.1-upstream-stable: released (6.1.75) [d69d7804cf9e2ba171a27e5f98bc266f13d0414a]
5.10-upstream-stable: released (5.10.209) [5c28478af371a1c3fdb570ca67f110e1ae60fc37]
4.19-upstream-stable: N/A "Vulnerable code not present"
sid: released (6.6.15-1)
6.1-bookworm-security: released (6.1.76-1)
5.10-bullseye-security: released (5.10.209-1)
4.19-buster-security: N/A "Vulnerable code not present"