Commit 4f9f8311 authored Nov 06, 2007 by Evgeniy Polyakov Committed by David S. Miller Nov 07, 2007

[PKT_SCHED]: Fix OOPS when removing devices from a teql queuing discipline



tecl_reset() is called from deactivate and qdisc is set to noop already,
but subsequent teql_xmit does not know about it and dereference private
data as teql qdisc and thus oopses.
not catch it first :)

Signed-off-by: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent c62cf5cb

net/sched/sch_teql.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -252,6 +252,9 @@ __teql_resolve(struct sk_buff skb, struct sk_buff skb_res, struct net_device *
		static inline int teql_resolve(struct sk_buff *skb,
		struct sk_buff skb_res, struct net_device dev)
		{
		if (dev->qdisc == &noop_qdisc)
		return -ENODEV;

		if (dev->header_ops == NULL \|\|
		skb->dst == NULL \|\|
		skb->dst->neighbour == NULL)