md/raid1: If md_integrity_register() failed,run() must free the mem

Signed-off-by: majianpeng <majianpeng@gmail.com>
Signed-off-by: NeilBrown <neilb@suse.de>

1 files changed, 7 insertions, 1 deletions

diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index 4a40a200d769..242440831b23 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -2636,11 +2636,13 @@ static struct r1conf *setup_conf(struct mddev *mddev)
         return ERR_PTR(err);
 }
 
+static int stop(struct mddev *mddev);
 static int run(struct mddev *mddev)
 {
         struct r1conf *conf;
         int i;
         struct md_rdev *rdev;
+        int ret;
 
         if (mddev->level != 1) {
                 printk(KERN_ERR "md/raid1:%s: raid level not set to mirroring (%d)\n",
@@ -2705,7 +2707,11 @@ static int run(struct mddev *mddev)
                 mddev->queue->backing_dev_info.congested_data = mddev;
                 blk_queue_merge_bvec(mddev->queue, raid1_mergeable_bvec);
         }
-        return md_integrity_register(mddev);
+
+        ret =  md_integrity_register(mddev);
+        if (ret)
+                stop(mddev);
+        return ret;
 }
 
 static int stop(struct mddev *mddev)