Commit 5c694129 authored May 28, 2013 by Kumar Amit Mehta Committed by Kent Overstreet Jun 26, 2013

md: bcache: io.c: fix a potential NULL pointer dereference



bio_alloc_bioset returns NULL on failure. This fix adds a missing check
for potential NULL pointer dereferencing.

Signed-off-by: Kumar Amit Mehta <gmate.amit@gmail.com>
Signed-off-by: Kent Overstreet <koverstreet@google.com>

parent 9e895ace

drivers/md/bcache/io.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -97,6 +97,8 @@ struct bio bch_bio_split(struct bio bio, int sectors,

		if (bio->bi_rw & REQ_DISCARD) {
		ret = bio_alloc_bioset(gfp, 1, bs);
		if (!ret)
		return NULL;
		idx = 0;
		goto out;
		}