In the Linux kernel, the following vulnerability has been resolved:blk-cgroup: fix list corruption from reorder of WRITE ->lqueued__blkcg_rstat_flush() can be run anytime, especially when blk_cgroup_bio_startis being executed.If WRITE of `->lqueued` is re-ordered with READ of 'bisc->lnode.next' inthe loop of __blkcg_rstat_flush(), `next_bisc` can be assigned with onestat instance being added in blk_cgroup_bio_start(), then the locallist in __blkcg_rstat_flush() could be corrupted.Fix the issue by adding one barrier.
CWE-400 Uncontrolled Resource Consumption