3.10-stable review patch. If anyone has any objections, please let me know.
------------------
From: Kumar Amit Mehta <gmate.amit@xxxxxxxxx>
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@xxxxxxxxx>
Signed-off-by: Kent Overstreet <koverstreet@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/md/bcache/io.c | 2 ++
1 file changed, 2 insertions(+)
--- a/drivers/md/bcache/io.c
+++ b/drivers/md/bcache/io.c
@@ -97,6 +97,8 @@ struct bio *bch_bio_split(struct bio *bi
if (bio->bi_rw & REQ_DISCARD) {
ret = bio_alloc_bioset(gfp, 1, bs);
+ if (!ret)
+ return NULL;
idx = 0;
goto out;
}
--
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