[PATCH 4.9 027/177] md-cluster: free md_cluster_info if node leave cluster

From: Greg Kroah-Hartman
Date: Mon Dec 18 2017 - 12:39:26 EST


4.9-stable review patch. If anyone has any objections, please let me know.

------------------

From: Guoqing Jiang <gqjiang@xxxxxxxx>


[ Upstream commit 9c8043f337f14d1743006dfc59c03e80a42e3884 ]

To avoid memory leak, we need to free the cinfo which
is allocated when node join cluster.

Reviewed-by: NeilBrown <neilb@xxxxxxxx>
Signed-off-by: Guoqing Jiang <gqjiang@xxxxxxxx>
Signed-off-by: Shaohua Li <shli@xxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/md/md-cluster.c | 1 +
1 file changed, 1 insertion(+)

--- a/drivers/md/md-cluster.c
+++ b/drivers/md/md-cluster.c
@@ -974,6 +974,7 @@ static int leave(struct mddev *mddev)
lockres_free(cinfo->bitmap_lockres);
unlock_all_bitmaps(mddev);
dlm_release_lockspace(cinfo->lockspace, 2);
+ kfree(cinfo);
return 0;
}