diff --git a/drivers/net/team/team.c b/drivers/net/team/team.c index 6a047d30e8c69f..d887016e54b68d 100644 --- a/drivers/net/team/team.c +++ b/drivers/net/team/team.c @@ -1167,6 +1167,12 @@ static int team_port_add(struct team *team, struct net_device *port_dev, return -EBUSY; } + if (dev == port_dev) { + NL_SET_ERR_MSG(extack, "Cannot enslave team device to itself"); + netdev_err(dev, "Cannot enslave team device to itself\n"); + return -EINVAL; + } + if (port_dev->features & NETIF_F_VLAN_CHALLENGED && vlan_uses_dev(dev)) { NL_SET_ERR_MSG(extack, "Device is VLAN challenged and team device has VLAN set up");