From 5c694129c8db6d89c9be109049a16510b2f70f6d Mon Sep 17 00:00:00 2001 From: Kumar Amit Mehta Date: Tue, 28 May 2013 00:31:15 -0700 Subject: [PATCH] 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 Signed-off-by: Kent Overstreet --- drivers/md/bcache/io.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/md/bcache/io.c b/drivers/md/bcache/io.c index 48efd4dea645..d285cd49104c 100644 --- a/drivers/md/bcache/io.c +++ b/drivers/md/bcache/io.c @@ -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; } -- 2.30.2