linux-kernel - [PATCH 4.4 43/48] mac80211: fix memory leak

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Date:   Mon,  1 Jun 2020 19:53:53 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Julian Calaby <julian.calaby@...il.com>,
        Sudip Mukherjee <sudip@...torindia.org>,
        Johannes Berg <johannes.berg@...el.com>,
        Guenter Roeck <linux@...ck-us.net>
Subject: [PATCH 4.4 43/48] mac80211: fix memory leak

From: Sudip Mukherjee <sudip@...torindia.org>

commit ea32f065bd3e3e09f0bcb3042f1664caf6b3e233 upstream.

On error we jumped to the error label and returned the error code but we
missed releasing sinfo.

Fixes: 5fe74014172d ("mac80211: avoid excessive stack usage in sta_info")
Reviewed-by: Julian Calaby <julian.calaby@...il.com>
Signed-off-by: Sudip Mukherjee <sudip@...torindia.org>
Signed-off-by: Johannes Berg <johannes.berg@...el.com>
Cc: Guenter Roeck <linux@...ck-us.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 net/mac80211/sta_info.c |    1 +
 1 file changed, 1 insertion(+)

--- a/net/mac80211/sta_info.c
+++ b/net/mac80211/sta_info.c
@@ -555,6 +555,7 @@ static int sta_info_insert_finish(struct
 	__cleanup_single_sta(sta);
  out_err:
 	mutex_unlock(&local->sta_mtx);
+	kfree(sinfo);
 	rcu_read_lock();
 	return err;
 }