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Message-Id: <20240201110756.29728-3-sw@simonwunderlich.de>
Date: Thu, 1 Feb 2024 12:07:54 +0100
From: Simon Wunderlich <sw@...onwunderlich.de>
To: kuba@...nel.org,
davem@...emloft.net
Cc: netdev@...r.kernel.org,
b.a.t.m.a.n@...ts.open-mesh.org,
Markus Elfring <elfring@...rs.sourceforge.net>,
Sven Eckelmann <sven@...fation.org>,
Simon Wunderlich <sw@...onwunderlich.de>
Subject: [PATCH 2/4] batman-adv: Return directly after a failed batadv_dat_select_candidates() in batadv_dat_forward_data()
From: Markus Elfring <elfring@...rs.sourceforge.net>
The kfree() function was called in one case by
the batadv_dat_forward_data() function during error handling
even if the passed variable contained a null pointer.
This issue was detected by using the Coccinelle software.
* Thus return directly after a batadv_dat_select_candidates() call failed
at the beginning.
* Delete the label “out” which became unnecessary with this refactoring.
Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
Acked-by: Sven Eckelmann <sven@...fation.org>
Signed-off-by: Simon Wunderlich <sw@...onwunderlich.de>
---
net/batman-adv/distributed-arp-table.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/net/batman-adv/distributed-arp-table.c b/net/batman-adv/distributed-arp-table.c
index 28a939d56090..4c7e85534324 100644
--- a/net/batman-adv/distributed-arp-table.c
+++ b/net/batman-adv/distributed-arp-table.c
@@ -684,7 +684,7 @@ static bool batadv_dat_forward_data(struct batadv_priv *bat_priv,
cand = batadv_dat_select_candidates(bat_priv, ip, vid);
if (!cand)
- goto out;
+ return ret;
batadv_dbg(BATADV_DBG_DAT, bat_priv, "DHT_SEND for %pI4\n", &ip);
@@ -728,7 +728,6 @@ static bool batadv_dat_forward_data(struct batadv_priv *bat_priv,
batadv_orig_node_put(cand[i].orig_node);
}
-out:
kfree(cand);
return ret;
}
--
2.39.2
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