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text ematch: check for NULL pointer before destroying textsearch config

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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 <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Thomas Graf 2010-10-31 09:37:38 -07:00 • committed by David S. Miller
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 @@ 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)