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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>
This commit is contained in:
Thomas Graf 2010-10-31 09:37:38 -07:00 committed by David S. Miller
parent 636f8c6f68
commit 5ec1cea057
1 changed files with 2 additions and 1 deletions
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3
net/sched/em_text.c
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@ -103,7 +103,8 @@ static int em_text_change(struct tcf_proto *tp, void *data, int len,
static void em_text_destroy(struct tcf_proto *tp, struct tcf_ematch *m) 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) static int em_text_dump(struct sk_buff *skb, struct tcf_ematch *m)