gfs2: Check sbbsizeshift after reading superblock
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 v5.4.225 by commit 8b6534c9ae9dba5489703a19d8ba6c8f2cfa33c2. For more details please see the references link.