This is a note to let you know that I've just added the patch titled
batman-adv: Return directly after a failed batadv_dat_select_candidates() in batadv_dat_forward_data()
to the 4.19-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
batman-adv-return-directly-after-a-failed-batadv_dat.patch
and it can be found in the queue-4.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 0d7cf1af38db651f0497743ae85a73f207e86856
Author: Markus Elfring <elfring@xxxxxxxxxxxxxxxxxxxxx>
Date: Tue Jan 2 07:27:45 2024 +0100
batman-adv: Return directly after a failed batadv_dat_select_candidates() in batadv_dat_forward_data()
[ Upstream commit ffc15626c861f811f9778914be004fcf43810a91 ]
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@xxxxxxxxxxxxxxxxxxxxx>
Acked-by: Sven Eckelmann <sven@xxxxxxxxxxxxx>
Signed-off-by: Simon Wunderlich <sw@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/net/batman-adv/distributed-arp-table.c b/net/batman-adv/distributed-arp-table.c
index af380dc877e31..6930d414138e1 100644
--- a/net/batman-adv/distributed-arp-table.c
+++ b/net/batman-adv/distributed-arp-table.c
@@ -648,7 +648,7 @@ static bool batadv_dat_send_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);
@@ -692,7 +692,6 @@ static bool batadv_dat_send_data(struct batadv_priv *bat_priv,
batadv_orig_node_put(cand[i].orig_node);
}
-out:
kfree(cand);
return ret;
}
