bfq: Make sure bfqg for which we are queueing requests is online
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 v5.15.46 by commit 6ee0868b0c3ccead5907685fcdcdd0c08dfe4b0b, it was introduced in version v4.12 by commit e21b7a0b988772e82e7147e1c659a5afe2ae003c. For more details please see the references link.