batman-adv: fix TT-TVLV parsing on OGM reception

[ Upstream commit e889241f45f9cecbc84a6ffed577083ab52e62ee ]

When accessing a TT-TVLV container in the OGM RX path
the variable pointing to the list of changes to apply is
altered by mistake.

This makes the TT component read data at the wrong position
in the OGM packet buffer.

Fix it by removing the bogus pointer alteration.

Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/net/batman-adv/translation-table.c b/net/batman-adv/translation-table.c
index ff625fedbc5eeb08a7569c01973f5eb1ddc71eb1..5275921047b503c566108c017171f46e37ee0ded 100644 (file)
--- a/net/batman-adv/translation-table.c
+++ b/net/batman-adv/translation-table.c
@@ -3204,7 +3204,6 @@ static void batadv_tt_update_orig(struct batadv_priv *bat_priv,
 
                spin_lock_bh(&orig_node->tt_lock);
 
-               tt_change = (struct batadv_tvlv_tt_change *)tt_buff;
                batadv_tt_update_changes(bat_priv, orig_node, tt_num_changes,
                                         ttvn, tt_change);