block: fix memory leak in bio_clone()

If bio_integrity_clone() fails, bio_clone() returns NULL without freeing
the newly allocated bio.

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

diff --git a/fs/bio.c b/fs/bio.c
index cf74737..d4f0632 100644 (file)
--- a/fs/bio.c
+++ b/fs/bio.c
@@ -465,8 +465,10 @@ struct bio *bio_clone(struct bio *bio, gfp_t gfp_mask)
 
                ret = bio_integrity_clone(b, bio, gfp_mask, fs_bio_set);
 
-               if (ret < 0)
+               if (ret < 0) {
+                       bio_put(b);
                        return NULL;
+               }
        }
 
        return b;