Linux kernel bug fix: xen/blkback: Avoid unmapping unmapped grant pages
Subsystem: drivers/block (drivers/block/xen-blkback/blkback.c)
Bug type: null-deref, severity: high
Keywords: null pointer
Files changed: drivers/block/xen-blkback/blkback.c
Introduced by Roger Pau Monne on 2013-04-18 09:29:22 -0400; fixed by SeongJae Park on 2019-12-03 14:03:24 -0700 (lifetime: 2420 days)