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authorVeaceslav Falico <vfalico@redhat.com>2013-09-27 15:10:58 +0200
committerDavid S. Miller <davem@davemloft.net>2013-09-28 15:27:33 -0700
commit746844931ed400eef32edaa069b996eb622bc39a (patch)
treed52cacdacaaf2410043fbb1425d82e8c416a9fa9 /drivers/net/bonding/bond_3ad.c
parent23c147e026bbb41dd26a2bda0404a95ea951072f (diff)
downloadlinux-linaro-stable-746844931ed400eef32edaa069b996eb622bc39a.tar.gz
bonding: verify if we still have slaves in bond_3ad_unbind_slave()
After commit 1f718f0f4f97145f4072d2d72dcf85069ca7226d ("bonding: populate neighbour's private on enslave"), we've moved the unlinking of the slave to the earliest position possible - so that nobody will see an half-uninited slave. However, bond_3ad_unbind_slave() relied that, even while removing the last slave, it is still accessible - via __get_first_agg() (and, eventually, bond_first_slave()). Fix that by verifying if the aggregator return is an actual aggregator, but not NULL. CC: Jay Vosburgh <fubar@us.ibm.com> CC: Andy Gospodarek <andy@greyhouse.net> Signed-off-by: Veaceslav Falico <vfalico@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/bonding/bond_3ad.c')
-rw-r--r--drivers/net/bonding/bond_3ad.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/net/bonding/bond_3ad.c b/drivers/net/bonding/bond_3ad.c
index 1337eafe4311..2715ea87d64c 100644
--- a/drivers/net/bonding/bond_3ad.c
+++ b/drivers/net/bonding/bond_3ad.c
@@ -2056,7 +2056,9 @@ void bond_3ad_unbind_slave(struct slave *slave)
pr_info("%s: Removing an active aggregator\n",
slave->bond->dev->name);
// select new active aggregator
- ad_agg_selection_logic(__get_first_agg(port));
+ temp_aggregator = __get_first_agg(port);
+ if (temp_aggregator)
+ ad_agg_selection_logic(temp_aggregator);
}
}
}