diff options
| author | Sven Eckelmann <sven@narfation.org> | 2016-07-15 17:39:32 +0200 |
|---|---|---|
| committer | Simon Wunderlich <sw@simonwunderlich.de> | 2016-08-09 07:54:52 +0200 |
| commit | 6913d61be5757dab2327a64a95d87caf7cca0632 (patch) | |
| tree | 5d8914dc896fbee07aae03453e08f968678d0305 | |
| parent | f489eab5b16b8a2ed8d63b6a725cc31e0c1d6c1a (diff) | |
| download | linux-stable-6913d61be5757dab2327a64a95d87caf7cca0632.tar.gz linux-stable-6913d61be5757dab2327a64a95d87caf7cca0632.tar.bz2 linux-stable-6913d61be5757dab2327a64a95d87caf7cca0632.zip | |
batman-adv: Place kref_get for tvlv_container near use
It is hard to understand why the refcnt is increased when it isn't done
near the actual place the new reference is used. So using kref_get right
before the place which requires the reference and in the same function
helps to avoid accidental problems caused by incorrect reference counting.
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
| -rw-r--r-- | net/batman-adv/tvlv.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/net/batman-adv/tvlv.c b/net/batman-adv/tvlv.c index 3d1cf0fb112d..353386780e6d 100644 --- a/net/batman-adv/tvlv.c +++ b/net/batman-adv/tvlv.c @@ -257,8 +257,13 @@ void batadv_tvlv_container_register(struct batadv_priv *bat_priv, spin_lock_bh(&bat_priv->tvlv.container_list_lock); tvlv_old = batadv_tvlv_container_get(bat_priv, type, version); batadv_tvlv_container_remove(bat_priv, tvlv_old); + + kref_get(&tvlv_new->refcount); hlist_add_head(&tvlv_new->list, &bat_priv->tvlv.container_list); spin_unlock_bh(&bat_priv->tvlv.container_list_lock); + + /* don't return reference to new tvlv_container */ + batadv_tvlv_container_put(tvlv_new); } /** |