diff mbox

[1/2] batman-adv: fix tt_local_reset_flags() function

Message ID 1319575362-20828-1-git-send-email-ordex@autistici.org (mailing list archive)
State Not Applicable, archived
Headers

Commit Message

Antonio Quartulli Oct. 25, 2011, 8:42 p.m. UTC 
  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 <jun361@gmail.com>
Signed-off-by: Antonio Quartulli <ordex@autistici.org>
Acked-by: Junkeun Song <jun361@gmail.com>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
---

David S. Miller already merged this patch as
31901264511cf20c5ed33b8649a3ca9ce28df60b in his net-next tree


 net/batman-adv/translation-table.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
diff mbox

Patch

diff --git a/net/batman-adv/translation-table.c b/net/batman-adv/translation-table.c
index fb6931d..f599db9 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);
 		}