--- x/drivers/net/team/team.c
+++ y/drivers/net/team/team.c
@@ -1967,15 +1967,19 @@ static int team_netpoll_setup(struct net
 }
 #endif
 
+static DEFINE_MUTEX(team_port_add_mutex);
+
 static int team_add_slave(struct net_device *dev, struct net_device *port_dev,
 			  struct netlink_ext_ack *extack)
 {
 	struct team *team = netdev_priv(dev);
 	int err;
 
+	mutex_lock(&team_port_add_mutex);
 	team_lock(team);
 	err = team_port_add(team, port_dev, extack);
 	team_unlock(team);
+	mutex_unlock(&team_port_add_mutex);
 
 	if (!err)
 		netdev_change_features(dev);