From 526d19a5e1cf1c252c9c6355c0ba8912fb9f02c5 Mon Sep 17 00:00:00 2001 From: Evgeniy Polyakov Date: Tue, 13 Nov 2007 09:27:27 +0100 Subject: [PKT_SCHED]: Fix OOPS when removing devices from a teql queuing discipline [ Upstream commit: 4f9f8311a08c0d95c70261264a2b47f2ae99683a ] 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 Signed-off-by: David S. Miller Signed-off-by: Adrian Bunk --- net/sched/sch_teql.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/net/sched/sch_teql.c b/net/sched/sch_teql.c index 79b8ef34c6e4..e7dc750ecade 100644 --- a/net/sched/sch_teql.c +++ b/net/sched/sch_teql.c @@ -265,6 +265,9 @@ __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->hard_header == NULL || skb->dst == NULL || skb->dst->neighbour == NULL) -- cgit v1.2.3