Hello, here is the second version of my patches to fix use-after-free issues in BFQ when processes with merged queues get moved to different cgroups. The patches have survived some beating in my test VM but so far I fail to reproduce the original KASAN reports so testing from people who can reproduce them is most welcome. Thanks! Changes since v1: * Added fix for bfq_put_cooperator() * Added fix to handle move between cgroups in bfq_merge_bio() Honza Previous versions: Link: http://lore.kernel.org/r/20211223171425.3551-1-jack@xxxxxxx # v1
