drivers/net/bonding/bond_alb.c: 5ce606d9dc03f9b145c3024abecfca20ec65fd9d
--- a/drivers/net/bonding/bond_alb.c
+++ b/drivers/net/bonding/bond_alb.c
@@ -1666,6 +1666,7 @@ int bond_alb_set_mac_address(struct net_
 		}
 	}
 
+	write_lock_bh(&bond->lock);
 	if (swap_slave) {
 		alb_swap_mac_addr(bond, swap_slave, bond->curr_active_slave);
 	} else {
@@ -1678,6 +1679,7 @@ int bond_alb_set_mac_address(struct net_
 			rlb_req_update_slave_clients(bond, bond->curr_active_slave);
 		}
 	}
+	write_unlock_bh(&bond->lock);
 
 	return 0;
 }