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authorSimon Wunderlich <simon.wunderlich@s2003.tu-chemnitz.de>2011-10-19 10:28:26 +0200
committerMarek Lindner <lindner_marek@yahoo.de>2011-10-25 14:23:04 +0200
commit6e8014947d6469df1566e9e253805557c5c0e4e0 (patch)
tree4088b0603c38b7244904aa7022f9833fba38ce9e /net/batman-adv
parentbatman-adv: remove references for global tt entries (diff)
downloadlinux-6e8014947d6469df1566e9e253805557c5c0e4e0.tar.xz
linux-6e8014947d6469df1566e9e253805557c5c0e4e0.zip
batman-adv: add sanity check when removing global tts
After removing the batman-adv module, the hash may be already gone when tt_global_del_orig() tries to clean the hash. This patch adds a sanity check to avoid this. Signed-off-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de> Tested-by: Alexey Fisher <bug-track@fisher-privat.net> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
Diffstat (limited to 'net/batman-adv')
-rw-r--r--net/batman-adv/translation-table.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/net/batman-adv/translation-table.c b/net/batman-adv/translation-table.c
index ca537ed2dd0a..d58fd8b9c818 100644
--- a/net/batman-adv/translation-table.c
+++ b/net/batman-adv/translation-table.c
@@ -698,6 +698,9 @@ void tt_global_del_orig(struct bat_priv *bat_priv,
struct hlist_head *head;
spinlock_t *list_lock; /* protects write access to the hash lists */
+ if (!hash)
+ return;
+
for (i = 0; i < hash->size; i++) {
head = &hash->table[i];
list_lock = &hash->list_locks[i];