linux-kernel - [PATCH] batman-adv: Fix mem leak in the batadv_tt_local

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Message-ID: <alpine.LNX.2.00.1208072030500.3227@swampdragon.chaosbits.net>
Date:	Tue, 7 Aug 2012 20:32:34 +0200 (CEST)
From:	Jesper Juhl <jj@...osbits.net>
To:	linux-kernel@...r.kernel.org
cc:	netdev@...r.kernel.org, b.a.t.m.a.n@...ts.open-mesh.org,
	"David S. Miller" <davem@...emloft.net>,
	Antonio Quartulli <ordex@...istici.org>,
	Simon Wunderlich <siwu@....tu-chemnitz.de>,
	Marek Lindner <lindner_marek@...oo.de>
Subject: [PATCH] batman-adv: Fix mem leak in the batadv_tt_local_event()
 function

Memory is allocated for 'tt_change_node' with kmalloc().
'tt_change_node' may go out of scope really being used for anything
(except have a few members initialized) if we hit the 'del:' label.
This patch makes sure we free the memory in that case.

Signed-off-by: Jesper Juhl <jj@...osbits.net>
---
 net/batman-adv/translation-table.c | 1 +
 1 file changed, 1 insertion(+)

 Compile tested only.

diff --git a/net/batman-adv/translation-table.c b/net/batman-adv/translation-table.c
index a438f4b..99dd8f7 100644
--- a/net/batman-adv/translation-table.c
+++ b/net/batman-adv/translation-table.c
@@ -197,6 +197,7 @@ static void batadv_tt_local_event(struct batadv_priv *bat_priv,
 del:
 		list_del(&entry->list);
 		kfree(entry);
+		kfree(tt_change_node);
 		event_removed = true;
 		goto unlock;
 	}
-- 
1.7.11.4


-- 
Jesper Juhl <jj@...osbits.net>       http://www.chaosbits.net/
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