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batman-adv: add critical bug fix

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



git-svn-id: svn://svn.openwrt.org/openwrt/packages@28472 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
marek 2011-10-17 12:16:11 +00:00
parent 20e4bc643d
commit f346e26475
1 changed files with 31 additions and 0 deletions
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31
net/batman-adv/patches/batman-adv_fix_tt_local_reset_flags_function.patch Normal file
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@ -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