From: Veaceslav Falico <vfalico@redhat.com>
Date: Fri, 27 Sep 2013 13:10:58 +0000 (+0200)
Subject: bonding: verify if we still have slaves in bond_3ad_unbind_slave()
X-Git-Tag: v3.13-rc1~105^2~290
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=746844931ed400eef32edaa069b996eb622bc39a;p=pandora-kernel.git

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>
---

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