4.4-stable review patch. If anyone has any objections, please let me know.
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From: Xin Long lucien.xin@gmail.com
[ Upstream commit 5c78f6bfae2b10ff70e21d343e64584ea6280c26 ]
vlan_vids_add_by_dev is called right after dev hwaddr sync, so on the err path it should unsync dev hwaddr. Otherwise, the slave dev's hwaddr will never be unsync when this err happens.
Fixes: 1ff412ad7714 ("bonding: change the bond's vlan syncing functions with the standard ones") Signed-off-by: Xin Long lucien.xin@gmail.com Reviewed-by: Nikolay Aleksandrov nikolay@cumulusnetworks.com Acked-by: Andy Gospodarek andy@greyhouse.net Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/net/bonding/bond_main.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-)
--- a/drivers/net/bonding/bond_main.c +++ b/drivers/net/bonding/bond_main.c @@ -1527,7 +1527,7 @@ int bond_enslave(struct net_device *bond if (res) { netdev_err(bond_dev, "Couldn't add bond vlan ids to %s\n", slave_dev->name); - goto err_close; + goto err_hwaddr_unsync; }
prev_slave = bond_last_slave(bond); @@ -1709,9 +1709,6 @@ err_unregister: netdev_rx_handler_unregister(slave_dev);
err_detach: - if (!bond_uses_primary(bond)) - bond_hw_addr_flush(bond_dev, slave_dev); - vlan_vids_del_by_dev(slave_dev, bond_dev); if (rcu_access_pointer(bond->primary_slave) == new_slave) RCU_INIT_POINTER(bond->primary_slave, NULL); @@ -1725,6 +1722,10 @@ err_detach: synchronize_rcu(); slave_disable_netpoll(new_slave);
+err_hwaddr_unsync: + if (!bond_uses_primary(bond)) + bond_hw_addr_flush(bond_dev, slave_dev); + err_close: slave_dev->priv_flags &= ~IFF_BONDING; dev_close(slave_dev);