[NETFILTER]: PPTP conntrack: fix GRE keymap leak

When destroying the GRE expectations without having seen the GRE connection
the keymap entry is not freed, leading to a memory leak and, in case of
a following call within the same session, failure during expectation setup.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/ipv4/netfilter/ip_conntrack_helper_pptp.c b/net/ipv4/netfilter/ip_conntrack_helper_pptp.c
index b0225b6..98267b0 100644 (file)
--- a/net/ipv4/netfilter/ip_conntrack_helper_pptp.c
+++ b/net/ipv4/netfilter/ip_conntrack_helper_pptp.c
@@ -194,6 +194,7 @@ static void pptp_destroy_siblings(struct ip_conntrack *ct)
 {
        struct ip_conntrack_tuple t;
 
+       ip_ct_gre_keymap_destroy(ct);
        /* Since ct->sibling_list has literally rusted away in 2.6.11,
         * we now need another way to find out about our sibling
         * contrack and expects... -HW */