From db5dda905759c931ceb8f3f2fcfd7719009acc98 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Mon, 19 Jul 2010 03:24:14 +0000 Subject: [PATCH] bonding: fix bond_inet6addr_event() After commit ad1afb0039391 (vlan_dev: VLAN 0 should be treated as "no vlan tag" (802.1p packet)), bond_inet6addr_event() might be called with a NULL bond->vlgrp pointer, and a non empty bond->vlan_list. vlan_group_get_device() is dereferencing a NULL pointer. Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- drivers/net/bonding/bond_ipv6.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/net/bonding/bond_ipv6.c b/drivers/net/bonding/bond_ipv6.c index 969ffed86b9f..121b073a6c3f 100644 --- a/drivers/net/bonding/bond_ipv6.c +++ b/drivers/net/bonding/bond_ipv6.c @@ -178,6 +178,8 @@ static int bond_inet6addr_event(struct notifier_block *this, } list_for_each_entry(vlan, &bond->vlan_list, vlan_list) { + if (!bond->vlgrp) + continue; vlan_dev = vlan_group_get_device(bond->vlgrp, vlan->vlan_id); if (vlan_dev == event_dev) {