Linux kernel bug fix: bfq-iosched: Ensure bio->bi_blkg is valid before using it
Subsystem: block (block/bfq-cgroup.c)
Bug type: crash, severity: high
Files changed: block/bfq-cgroup.c
Introduced by Tejun Heo on 2019-11-07 12:28:13 -0700; fixed by Hou Tao on 2019-12-05 07:10:09 -0700 (lifetime: 27 days)