diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c index b47fa0421e01e6..e5628fc725c3fc 100644 --- a/drivers/net/bonding/bond_main.c +++ b/drivers/net/bonding/bond_main.c @@ -1197,6 +1197,11 @@ int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev) return -EBUSY; } + if (bond_dev == slave_dev) { + pr_err("%s: cannot enslave bond to itself.\n", bond_dev->name); + return -EPERM; + } + /* vlan challenged mutual exclusion */ /* no need to lock since we're protected by rtnl_lock */ if (slave_dev->features & NETIF_F_VLAN_CHALLENGED) {