linux-kernel - [PATCH -next] wifi: mac80211: fix missing dev_kfree_skb() in error path in ieee80211_tx_control

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Date:   Thu, 18 Aug 2022 12:33:49 +0800
From:   Yang Yingliang <yangyingliang@...wei.com>
To:     <linux-kernel@...r.kernel.org>, <netdev@...r.kernel.org>,
        <linux-wireless@...r.kernel.org>
CC:     <johannes@...solutions.net>
Subject: [PATCH -next] wifi: mac80211: fix missing dev_kfree_skb() in error path in ieee80211_tx_control_port()

Add missing dev_kfree_skb() in error path in ieee80211_tx_control_port()
to avoid memory leak.

Fixes: dd820ed6336a ("wifi: mac80211: return error from control port TX for drops")
Signed-off-by: Yang Yingliang <yangyingliang@...wei.com>
---
 net/mac80211/tx.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index 45df9932d0ba..594bd70ee641 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -5885,6 +5885,7 @@ int ieee80211_tx_control_port(struct wiphy *wiphy, struct net_device *dev,
 	rcu_read_lock();
 	err = ieee80211_lookup_ra_sta(sdata, skb, &sta);
 	if (err) {
+		dev_kfree_skb(skb);
 		rcu_read_unlock();
 		return err;
 	}
-- 
2.25.1