4.9-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 9f5a90c107741b864398f4ac0014711a8c1d8474 ]
When dev_set_promiscuity(1) succeeds but dev_set_allmulti(1) fails, dev_set_promiscuity(-1) should be done before going to the err path. Otherwise, dev->promiscuity will leak.
Fixes: 7e1a1ac1fbaa ("bonding: Check return of dev_set_promiscuity/allmulti") Signed-off-by: Xin Long lucien.xin@gmail.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 | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)
--- a/drivers/net/bonding/bond_main.c +++ b/drivers/net/bonding/bond_main.c @@ -1700,8 +1700,11 @@ int bond_enslave(struct net_device *bond /* set allmulti level to new slave */ if (bond_dev->flags & IFF_ALLMULTI) { res = dev_set_allmulti(slave_dev, 1); - if (res) + if (res) { + if (bond_dev->flags & IFF_PROMISC) + dev_set_promiscuity(slave_dev, -1); goto err_sysfs_del; + } }
netif_addr_lock_bh(bond_dev);