CVE ID:	CVE-2023-52448
Description:	In the Linux kernel, the following vulnerability has been resolved: gfs2: Fix kernel NULL pointer dereference in gfs2_rgrp_dump Syzkaller has reported a NULL pointer dereference when accessing rgd->rd_rgl in gfs2_rgrp_dump(). This can happen when creating rgd->rd_gl fails in read_rindex_entry(). Add a NULL pointer check in gfs2_rgrp_dump() to prevent that.
Test IDs:	None available
Cross References:	Common Vulnerability Exposure (CVE) ID: CVE-2023-52448 https://git.kernel.org/stable/c/067a7c48c2c70f05f9460d6f0e8423e234729f05 https://git.kernel.org/stable/c/067a7c48c2c70f05f9460d6f0e8423e234729f05 https://git.kernel.org/stable/c/5c28478af371a1c3fdb570ca67f110e1ae60fc37 https://git.kernel.org/stable/c/5c28478af371a1c3fdb570ca67f110e1ae60fc37 https://git.kernel.org/stable/c/8877243beafa7c6bfc42022cbfdf9e39b25bd4fa https://git.kernel.org/stable/c/8877243beafa7c6bfc42022cbfdf9e39b25bd4fa https://git.kernel.org/stable/c/c323efd620c741168c8e0cc6fc0be04ab57e331a https://git.kernel.org/stable/c/c323efd620c741168c8e0cc6fc0be04ab57e331a https://git.kernel.org/stable/c/d69d7804cf9e2ba171a27e5f98bc266f13d0414a https://git.kernel.org/stable/c/d69d7804cf9e2ba171a27e5f98bc266f13d0414a https://git.kernel.org/stable/c/ee0586d73cbaf0e7058bc640d62a9daf2dfa9178 https://git.kernel.org/stable/c/ee0586d73cbaf0e7058bc640d62a9daf2dfa9178 https://git.kernel.org/stable/c/efc8ef87ab9185a23d5676f2f7d986022d91bcde https://git.kernel.org/stable/c/efc8ef87ab9185a23d5676f2f7d986022d91bcde