diff --git a/fs/nfs/dns_resolve.c b/fs/nfs/dns_resolve.c
index aec769a500a1..89bd5581f317 100644
--- a/fs/nfs/dns_resolve.c
+++ b/fs/nfs/dns_resolve.c
@@ -93,7 +93,7 @@ static void nfs_dns_ent_init(struct cache_head *cnew,
 	key = container_of(ckey, struct nfs_dns_ent, h);
 
 	kfree(new->hostname);
-	new->hostname = kstrndup(key->hostname, key->namelen, GFP_KERNEL);
+	new->hostname = kmemdup_nul(key->hostname, key->namelen, GFP_KERNEL);
 	if (new->hostname) {
 		new->namelen = key->namelen;
 		nfs_dns_ent_update(cnew, ckey);
diff --git a/fs/nfs/nfs4namespace.c b/fs/nfs/nfs4namespace.c
index 3ea1c1008b5b..84026e7b8a5f 100644
--- a/fs/nfs/nfs4namespace.c
+++ b/fs/nfs/nfs4namespace.c
@@ -501,7 +501,7 @@ static int nfs4_try_replacing_one_location(struct nfs_server *server,
 		rpc_set_port(sap, NFS_PORT);
 
 		error = -ENOMEM;
-		hostname = kstrndup(buf->data, buf->len, GFP_KERNEL);
+		hostname = kmemdup_nul(buf->data, buf->len, GFP_KERNEL);
 		if (hostname == NULL)
 			break;