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From: Hangyu Hua <hbh25y@gmail.com>
To: jhs@mojatatu.com,
	xiyou.wangcong@gmail.com,
	jiri@resnulli.us,
	davem@davemloft.net,
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Cc: netdev@vger.kernel.org,
	linux-kernel@vger.kernel.org,
	Hangyu Hua <hbh25y@gmail.com>
Subject: [PATCH] net: sched: em_text: fix possible memory leak in em_text_destroy()
Date: Wed, 20 Dec 2023 11:08:38 +0800
Message-Id: <20231220030838.11751-1-hbh25y@gmail.com>
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m->data needs to be freed when em_text_destroy is called.

Fixes: d675c989ed2d ("[PKT_SCHED]: Packet classification based on textsearch (ematch)")
Signed-off-by: Hangyu Hua <hbh25y@gmail.com>
---
 net/sched/em_text.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/net/sched/em_text.c b/net/sched/em_text.c
index 6f3c1fb2fb44..b9d5d4dca2c9 100644
--- a/net/sched/em_text.c
+++ b/net/sched/em_text.c
@@ -97,8 +97,10 @@ static int em_text_change(struct net *net, void *data, int len,
 
 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(m->data);
+	}
 }
 
 static int em_text_dump(struct sk_buff *skb, struct tcf_ematch *m)
-- 
2.34.1