From bde860c48a217a9b71fda841090afab693ccb2b6 Mon Sep 17 00:00:00 2001 From: Antonio Quartulli Date: Sun, 16 Oct 2011 18:53:37 +0200 Subject: [PATCH] batman-adv: fix tt_local_reset_flags() function commit 31901264511cf20c5ed33b8649a3ca9ce28df60b upstream. Currently the counter of tt_local_entry structures (tt_local_num) is incremented each time the tt_local_reset_flags() is invoked causing the node to send wrong TT_REPONSE packets containing a copy of non-initialised memory thus corrupting other nodes global translation table and making higher level communication impossible. Reported-by: Junkeun Song Signed-off-by: Antonio Quartulli Acked-by: Junkeun Song Signed-off-by: Marek Lindner Signed-off-by: Greg Kroah-Hartman --- net/batman-adv/translation-table.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/net/batman-adv/translation-table.c b/net/batman-adv/translation-table.c index fb6931d00cd7..f599db9dbec1 100644 --- a/net/batman-adv/translation-table.c +++ b/net/batman-adv/translation-table.c @@ -1668,6 +1668,8 @@ static void tt_local_reset_flags(struct bat_priv *bat_priv, uint16_t flags) rcu_read_lock(); hlist_for_each_entry_rcu(tt_local_entry, node, head, hash_entry) { + if (!(tt_local_entry->flags & flags)) + continue; tt_local_entry->flags &= ~flags; atomic_inc(&bat_priv->num_local_tt); } -- 2.39.5