netdev - [PATCH] wifi: mac80211: fix memory leak in ieee80211_if

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Message-ID: <20221117064500.319983-1-shaozhengchao@huawei.com>
Date:   Thu, 17 Nov 2022 14:45:00 +0800
From:   Zhengchao Shao <shaozhengchao@...wei.com>
To:     <netdev@...r.kernel.org>, <linux-wireless@...r.kernel.org>,
        <johannes@...solutions.net>, <davem@...emloft.net>,
        <edumazet@...gle.com>, <kuba@...nel.org>, <pabeni@...hat.com>
CC:     <weiyongjun1@...wei.com>, <yuehaibing@...wei.com>,
        <shaozhengchao@...wei.com>
Subject: [PATCH] wifi: mac80211: fix memory leak in ieee80211_if_add()

When register_netdevice() failed in ieee80211_if_add(), ndev->tstats
isn't released. Fix it.

Fixes: 5a490510ba5f ("mac80211: use per-CPU TX/RX statistics")
Signed-off-by: Zhengchao Shao <shaozhengchao@...wei.com>
---
 net/mac80211/iface.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c
index dd9ac1f7d2ea..46f08ec5ed76 100644
--- a/net/mac80211/iface.c
+++ b/net/mac80211/iface.c
@@ -2258,6 +2258,7 @@ int ieee80211_if_add(struct ieee80211_local *local, const char *name,
 
 		ret = cfg80211_register_netdevice(ndev);
 		if (ret) {
+			ieee80211_if_free(ndev);
 			free_netdev(ndev);
 			return ret;
 		}
-- 
2.17.1