md/bitmap: don't set sb values if can't pass sanity check
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 v5.10.121 by commit e69e93120f6219b9cc4fba3b515b6ababd8548aa. For more details please see the references link.