batman-adv: add critical bug fix

Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
SVN-Revision: 28472

diff --git a/net/batman-adv/patches/batman-adv_fix_tt_local_reset_flags_function.patch b/net/batman-adv/patches/batman-adv_fix_tt_local_reset_flags_function.patch
new file mode 100644 (file)
index 0000000..3d0d51e
--- /dev/null
+++ b/net/batman-adv/patches/batman-adv_fix_tt_local_reset_flags_function.patch
@@ -0,0 +1,31 @@
+From: Antonio Quartulli <ordex@autistici.org>
+
+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>
+---
+ translation-table.c |    2 ++
+ 1 files changed, 2 insertions(+), 0 deletions(-)
+
+diff --git a/translation-table.c b/translation-table.c
+index 2d2cfc1..d4a3917 100644
+--- a/translation-table.c
++++ b/translation-table.c
+@@ -1727,6 +1727,8 @@ 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);
+               }
+-- 
+1.7.3.4
+