blk-mq: fix null pointer dereference in blkmqclearrqmapping()
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 v6.0.6 by commit 6a440e6d04431e774dc084abe88c106e2a474c1a, it was introduced in version v5.16 by commit 63064be150e4b1ba1e4af594ef5aa81adf21a52d. For more details please see the references link.