net: sched: em_text: fix possible memory leak in em_text_destroy()

m->data needs to be freed when em_text_destroy is called.

Fixes: d675c989ed2d ("[PKT_SCHED]: Packet classification based on textsearch (ematch)")
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: Hangyu Hua <hbh25y@gmail.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/sched/em_text.c b/net/sched/em_text.c
index 6f3c1fb2fb44c42772a08d0510152d9f9eab1800..f176afb70559eb0a594a2f724765ccb0a1d3b746 100644 (file)
--- a/net/sched/em_text.c
+++ b/net/sched/em_text.c
@@ -97,8 +97,10 @@ retry:
 
 static void em_text_destroy(struct tcf_ematch *m)
 {
-       if (EM_TEXT_PRIV(m) && EM_TEXT_PRIV(m)->config)
+       if (EM_TEXT_PRIV(m) && EM_TEXT_PRIV(m)->config) {
                textsearch_destroy(EM_TEXT_PRIV(m)->config);
+               kfree(EM_TEXT_PRIV(m));
+       }
 }
 
 static int em_text_dump(struct sk_buff *skb, struct tcf_ematch *m)