From 5ec1cea057495b8f10bab0c1396a9d8e46b7b0a8 Mon Sep 17 00:00:00 2001
From: Thomas Graf <tgraf@infradead.org>
Date: Sun, 31 Oct 2010 09:37:38 -0700
Subject: [PATCH] text ematch: check for NULL pointer before destroying
textsearch config
While validating the configuration em_ops is already set, thus the
individual destroy functions are called, but the ematch data has
not been allocated and associated with the ematch yet.
Signed-off-by: Thomas Graf <tgraf@infradead.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
net/sched/em_text.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/net/sched/em_text.c b/net/sched/em_text.c
index 763253257411..ea8f566e720c 100644
--- a/net/sched/em_text.c
+++ b/net/sched/em_text.c
@@ -103,7 +103,8 @@ retry:
static void em_text_destroy(struct tcf_proto *tp, struct tcf_ematch *m)
{
- textsearch_destroy(EM_TEXT_PRIV(m)->config);
+ if (EM_TEXT_PRIV(m) && EM_TEXT_PRIV(m)->config)
+ textsearch_destroy(EM_TEXT_PRIV(m)->config);
}
static int em_text_dump(struct sk_buff *skb, struct tcf_ematch *m)
--
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