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| author | Kumar Amit Mehta <gmate.amit@gmail.com> | 2013-05-28 11:31:15 +0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-08-29 20:47:40 +0400 |
| commit | ba5c60fc8f5f574c7cec70740ca19d358b780c57 (patch) | |
| tree | e5142cafb4422d696970fa54e8a3f20d5710c879 | |
| parent | 644f5d570740c90439fdf69e8b47647584c6dc2f (diff) | |
| download | linux-ba5c60fc8f5f574c7cec70740ca19d358b780c57.tar.xz | |
md: bcache: io.c: fix a potential NULL pointer dereference
commit 5c694129c8db6d89c9be109049a16510b2f70f6d upstream.
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/md/bcache/io.c | 2 |
1 files changed, 2 insertions, 0 deletions
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; } |