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batman-adv: fix memory leak in in batadv_dat_put_dhcp

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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: b61ec31c85 ("batman-adv: Snoop DHCPACKs for DAT")
Signed-off-by: Martin Weinelt <martin@linuxlounge.net>
[sven@narfation.org: add commit message]
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
This commit is contained in:
Martin Weinelt 2019-02-06 15:39:14 +01:00 committed by Simon Wunderlich
parent 7a79d717e0
commit 5f320f09b3
1 changed files with 2 additions and 0 deletions
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2
net/batman-adv/distributed-arp-table.c
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@ -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, yiaddr, vid, BATADV_P_DAT_DHT_PUT);
batadv_dat_send_data(bat_priv, skb, ip_dst, 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, batadv_dbg(BATADV_DBG_DAT, bat_priv,
"Snooped from outgoing DHCPACK (server address): %pI4, %pM (vid: %i)\n", "Snooped from outgoing DHCPACK (server address): %pI4, %pM (vid: %i)\n",
&ip_dst, hw_dst, batadv_print_vid(vid)); &ip_dst, hw_dst, batadv_print_vid(vid));