Repository : ssh://git@open-mesh.org/batman-adv
On branch : maint
>---------------------------------------------------------------
commit 650d41de4be2fe9e9d1842c1abdd357dedbaa7ba
Author: Sven Eckelmann <sven(a)narfation.org>
Date: Fri May 6 11:43:39 2016 +0200
batman-adv: Fix refcnt leak in batadv_v_neigh_*
The functions batadv_neigh_ifinfo_get increase the reference counter of the
batadv_neigh_ifinfo. These have to be reduced again when the reference is
not used anymore to correctly free the objects.
Fixes: b05bbab5e1fc ("batman-adv: B.A.T.M.A.N. V - implement neighbor comparison API calls")
Signed-off-by: Sven Eckelmann <sven(a)narfation.org>
Signed-off-by: Marek Lindner <mareklindner(a)neomailbox.ch>
>---------------------------------------------------------------
650d41de4be2fe9e9d1842c1abdd357dedbaa7ba
net/batman-adv/bat_v.c | 32 +++++++++++++++++++++++++-------
1 file changed, 25 insertions(+), 7 deletions(-)
diff --git a/net/batman-adv/bat_v.c b/net/batman-adv/bat_v.c
index 7e1467a..2bcb29b 100644
--- a/net/batman-adv/bat_v.c
+++ b/net/batman-adv/bat_v.c
@@ -274,14 +274,23 @@ static int batadv_v_neigh_cmp(struct batadv_neigh_node *neigh1,
struct batadv_hard_iface *if_outgoing2)
{
struct batadv_neigh_ifinfo *ifinfo1, *ifinfo2;
+ int ret = 0;
ifinfo1 = batadv_neigh_ifinfo_get(neigh1, if_outgoing1);
+ if (WARN_ON(!ifinfo1))
+ goto err_ifinfo1;
+
ifinfo2 = batadv_neigh_ifinfo_get(neigh2, if_outgoing2);
+ if (WARN_ON(!ifinfo2))
+ goto err_ifinfo2;
- if (WARN_ON(!ifinfo1 || !ifinfo2))
- return 0;
+ ret = ifinfo1->bat_v.throughput - ifinfo2->bat_v.throughput;
- return ifinfo1->bat_v.throughput - ifinfo2->bat_v.throughput;
+ batadv_neigh_ifinfo_put(ifinfo2);
+err_ifinfo2:
+ batadv_neigh_ifinfo_put(ifinfo1);
+err_ifinfo1:
+ return ret;
}
static bool batadv_v_neigh_is_sob(struct batadv_neigh_node *neigh1,
@@ -291,17 +300,26 @@ static bool batadv_v_neigh_is_sob(struct batadv_neigh_node *neigh1,
{
struct batadv_neigh_ifinfo *ifinfo1, *ifinfo2;
u32 threshold;
+ bool ret = false;
ifinfo1 = batadv_neigh_ifinfo_get(neigh1, if_outgoing1);
- ifinfo2 = batadv_neigh_ifinfo_get(neigh2, if_outgoing2);
+ if (WARN_ON(!ifinfo1))
+ goto err_ifinfo1;
- if (WARN_ON(!ifinfo1 || !ifinfo2))
- return false;
+ ifinfo2 = batadv_neigh_ifinfo_get(neigh2, if_outgoing2);
+ if (WARN_ON(!ifinfo2))
+ goto err_ifinfo2;
threshold = ifinfo1->bat_v.throughput / 4;
threshold = ifinfo1->bat_v.throughput - threshold;
- return ifinfo2->bat_v.throughput > threshold;
+ ret = ifinfo2->bat_v.throughput > threshold;
+
+ batadv_neigh_ifinfo_put(ifinfo2);
+err_ifinfo2:
+ batadv_neigh_ifinfo_put(ifinfo1);
+err_ifinfo1:
+ return ret;
}
static struct batadv_algo_ops batadv_batman_v __read_mostly = {