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OpenCloudOS-Kernel
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bonding: primary_slave & curr_active_slave are not cleaned on enslave failure 

On enslave failure primary_slave can point to new_slave which is to be
freed, and the same applies to curr_active_slave. So check if this is
the case and clean up properly after err_detach because that's the first
error code path after they're set.

Signed-off-by: Nikolay Aleksandrov <nikolay@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
nikolay@redhat.com 2013-04-18 07:33:36 +00:00 committed by David S. Miller
parent a506e7b479
commit 3c5913b53f
1 changed files with 10 additions and 0 deletions
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10
drivers/net/bonding/bond_main.c
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@ -1909,7 +1909,17 @@ err_detach:
bond_del_vlans_from_slave(bond, slave_dev);
write_lock_bh(&bond->lock);
bond_detach_slave(bond, new_slave);
if (bond->primary_slave == new_slave)
bond->primary_slave = NULL;
write_unlock_bh(&bond->lock);
if (bond->curr_active_slave == new_slave) {
read_lock(&bond->lock);
write_lock_bh(&bond->curr_slave_lock);
bond_change_active_slave(bond, NULL);
bond_select_active_slave(bond);
write_unlock_bh(&bond->curr_slave_lock);
read_unlock(&bond->lock);
}
err_close:
slave_dev->priv_flags &= ~IFF_BONDING;