1 files changed, 4 insertions, 1 deletions

diff --git a/net/netlink/genetlink.c b/net/netlink/genetlink.c
index 66f6ba0bab11..566941e03363 100644
--- a/net/netlink/genetlink.c
+++ b/net/netlink/genetlink.c
@@ -176,9 +176,10 @@ int genl_register_mc_group(struct genl_family *family,
         if (family->netnsok) {
                 struct net *net;
 
+                netlink_table_grab();
                 rcu_read_lock();
                 for_each_net_rcu(net) {
-                        err = netlink_change_ngroups(net->genl_sock,
+                        err = __netlink_change_ngroups(net->genl_sock,
                                         mc_groups_longs * BITS_PER_LONG);
                         if (err) {
                                 /*
@@ -188,10 +189,12 @@ int genl_register_mc_group(struct genl_family *family,
                                  * increased on some sockets which is ok.
                                  */
                                 rcu_read_unlock();
+                                netlink_table_ungrab();
                                 goto out;
                         }
                 }
                 rcu_read_unlock();
+                netlink_table_ungrab();
         } else {
                 err = netlink_change_ngroups(init_net.genl_sock,
                                              mc_groups_longs * BITS_PER_LONG);