From: Martin Weinelt <mar...@linuxlounge.net>

batadv_dat_put_dhcp is creating a new ARP packet via
batadv_dat_arp_create_reply and tries to forward it via
batadv_dat_send_data to different peers in the DHT. The original skb is not
consumed by batadv_dat_send_data and thus has to be consumed by the caller.

Fixes: b61ec31c8575 ("batman-adv: Snoop DHCPACKs for DAT")
Signed-off-by: Martin Weinelt <mar...@linuxlounge.net>
[s...@narfation.org: add commit message]
Signed-off-by: Sven Eckelmann <s...@narfation.org>
Signed-off-by: Simon Wunderlich <s...@simonwunderlich.de>
---
 net/batman-adv/distributed-arp-table.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/net/batman-adv/distributed-arp-table.c 
b/net/batman-adv/distributed-arp-table.c
index 899ab051ffce..310a4f353008 100644
--- a/net/batman-adv/distributed-arp-table.c
+++ b/net/batman-adv/distributed-arp-table.c
@@ -1711,6 +1711,8 @@ static void batadv_dat_put_dhcp(struct batadv_priv 
*bat_priv, u8 *chaddr,
        batadv_dat_send_data(bat_priv, skb, yiaddr, vid, BATADV_P_DAT_DHT_PUT);
        batadv_dat_send_data(bat_priv, skb, ip_dst, vid, BATADV_P_DAT_DHT_PUT);
 
+       consume_skb(skb);
+
        batadv_dbg(BATADV_DBG_DAT, bat_priv,
                   "Snooped from outgoing DHCPACK (server address): %pI4, %pM 
(vid: %i)\n",
                   &ip_dst, hw_dst, batadv_print_vid(vid));
-- 
2.11.0

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