From: Zhilong Liu <zlliu@suse.com>
Date: Mon, 10 Apr 2017 06:15:55 +0000 (+0800)
Subject: md.c:didn't unlock the mddev before return EINVAL in array_size_store
X-Git-Tag: v4.12-rc1~121^2^2~25
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=b670883bb9e55ba63a278d83e034faefc01ce2cf;p=karo-tx-linux.git

md.c:didn't unlock the mddev before return EINVAL in array_size_store

md.c: it needs to release the mddev lock before
the array_size_store() returns.

Fixes: ab5a98b132fd ("md-cluster: change array_sectors and update size are not supported")

Signed-off-by: Zhilong Liu <zlliu@suse.com>
Reviewed-by: Guoqing Jiang <gqjiang@suse.com>
Signed-off-by: Shaohua Li <shli@fb.com>
---

diff --git a/drivers/md/md.c b/drivers/md/md.c
index a612b9f83069..5022be183390 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -4950,8 +4950,10 @@ array_size_store(struct mddev *mddev, const char *buf, size_t len)
 		return err;
 
 	/* cluster raid doesn't support change array_sectors */
-	if (mddev_is_clustered(mddev))
+	if (mddev_is_clustered(mddev)) {
+		mddev_unlock(mddev);
 		return -EINVAL;
+	}
 
 	if (strncmp(buf, "default", 7) == 0) {
 		if (mddev->pers)