blk-mq: don't touch ->tagset in blkmqgetsqhctx
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 v5.15.47 by commit 460aa288c5cd0544dcf933a2f0ad0e8c6d2d35ff, it was introduced in version v5.12 by commit b6e68ee82585f2ee890b0a897a6aacbf49a467bb. For more details please see the references link.