rds: fix memory leak error

When the function register_netdevice_notifier fails, the memory
allocated by kmem_cache_create should be freed by the function
kmem_cache_destroy.

Cc: Joe Jin <joe.jin@oracle.com>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Signed-off-by: Zhu Yanjun <yanjun.zhu@oracle.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Acked-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/rds/tcp.c b/net/rds/tcp.c
index 57bb52361e0fda2d3ca4ace76b64a02dc32d1454..5438f6725092b7962613f3cf0203e89f16735e34 100644 (file)
--- a/net/rds/tcp.c
+++ b/net/rds/tcp.c
@@ -641,12 +641,12 @@ static int rds_tcp_init(void)
        ret = register_netdevice_notifier(&rds_tcp_dev_notifier);
        if (ret) {
                pr_warn("could not register rds_tcp_dev_notifier\n");
-               goto out;
+               goto out_slab;
        }
 
        ret = register_pernet_subsys(&rds_tcp_net_ops);
        if (ret)
-               goto out_slab;
+               goto out_notifier;
 
        ret = rds_tcp_recv_init();
        if (ret)
@@ -664,9 +664,10 @@ out_recv:
        rds_tcp_recv_exit();
 out_pernet:
        unregister_pernet_subsys(&rds_tcp_net_ops);
-out_slab:
+out_notifier:
        if (unregister_netdevice_notifier(&rds_tcp_dev_notifier))
                pr_warn("could not unregister rds_tcp_dev_notifier\n");
+out_slab:
        kmem_cache_destroy(rds_tcp_conn_slab);
 out:
        return ret;