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authorJoe Stringer <joe@ovn.org>2015-12-09 14:07:39 -0800
committerDavid S. Miller <davem@davemloft.net>2015-12-11 23:31:31 -0500
commit2f3ab9f9fc23811188b9d07d86e4d99ffee887f4 (patch)
tree57c83030fab36fecf1185fab29a9048b87178d95 /net/openvswitch
parent651df2183543bc92f5dbcf99cd9e236ead0bc4c5 (diff)
downloadlinux-2f3ab9f9fc23811188b9d07d86e4d99ffee887f4.tar.bz2
openvswitch: Fix helper reference leak
If the actions (re)allocation fails, or the actions list is larger than the maximum size, and the conntrack action is the last action when these problems are hit, then references to helper modules may be leaked. Fix the issue. Fixes: cae3a2627520 ("openvswitch: Allow attaching helpers to ct action") Signed-off-by: Joe Stringer <joe@ovn.org> Acked-by: Pravin B Shelar <pshelar@nicira.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/openvswitch')
-rw-r--r--net/openvswitch/conntrack.c9
1 files changed, 8 insertions, 1 deletions
diff --git a/net/openvswitch/conntrack.c b/net/openvswitch/conntrack.c
index c2cc11168fd5..585a5aa81f89 100644
--- a/net/openvswitch/conntrack.c
+++ b/net/openvswitch/conntrack.c
@@ -53,6 +53,8 @@ struct ovs_conntrack_info {
struct md_labels labels;
};
+static void __ovs_ct_free_action(struct ovs_conntrack_info *ct_info);
+
static u16 key_to_nfproto(const struct sw_flow_key *key)
{
switch (ntohs(key->eth.type)) {
@@ -708,7 +710,7 @@ int ovs_ct_copy_action(struct net *net, const struct nlattr *attr,
nf_conntrack_get(&ct_info.ct->ct_general);
return 0;
err_free_ct:
- nf_conntrack_free(ct_info.ct);
+ __ovs_ct_free_action(&ct_info);
return err;
}
@@ -750,6 +752,11 @@ void ovs_ct_free_action(const struct nlattr *a)
{
struct ovs_conntrack_info *ct_info = nla_data(a);
+ __ovs_ct_free_action(ct_info);
+}
+
+static void __ovs_ct_free_action(struct ovs_conntrack_info *ct_info)
+{
if (ct_info->helper)
module_put(ct_info->helper->me);
if (ct_info->ct)