From: Simon Wunderlich simon.wunderlich@s2003.tu-chemnitz.de
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 --- net/batman-adv/translation-table.c | 3 +++ 1 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/net/batman-adv/translation-table.c b/net/batman-adv/translation-table.c index abf05cb..c7aafc7 100644 --- a/net/batman-adv/translation-table.c +++ b/net/batman-adv/translation-table.c @@ -722,6 +722,9 @@ 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];