net/batman-adv/patches/0002-batman-adv_add_sanity_check_when_removing_global_tts.patch

   1
   2 After removing the batman-adv module, the hash may be already gone
   3 when tt_global_del_orig() tries to clean the hash. This patch adds
   4 a sanity check to avoid this.
   5
   6 Signed-off-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de>
   7 ---
   8  translation-table.c |    3 +++
   9  1 files changed, 3 insertions(+), 0 deletions(-)
  10
  11 --- a/translation-table.c
  12 +++ b/translation-table.c
  13 @@ -712,6 +712,9 @@ void tt_global_del_orig(struct bat_priv *bat_priv,
  14         struct hlist_head *head;
  15         spinlock_t *list_lock; /* protects write access to the hash lists */
  16
  17 +       if (!hash)
  18 +               return;
  19 +
  20         for (i = 0; i < hash->size; i++) {
  21                 head = &hash->table[i];
  22                 list_lock = &hash->list_locks[i];
  23