[NETFILTER]: fix conntrack refcount leak in unlink_expect()

In unlink_expect(), the expectation is removed from the list so the
refcount must be dropped as well.

Signed-off-by: Pablo Neira Ayuso <pablo@eurodev.net>
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 0 deletions

diff --git a/net/ipv4/netfilter/ip_conntrack_core.c b/net/ipv4/netfilter/ip_conntrack_core.c
index dace93eacc5c..9261388d5ac2 100644
--- a/net/ipv4/netfilter/ip_conntrack_core.c
+++ b/net/ipv4/netfilter/ip_conntrack_core.c
@@ -204,6 +204,7 @@ static void unlink_expect(struct ip_conntrack_expect *exp)
         list_del(&exp->list);
         CONNTRACK_STAT_INC(expect_delete);
         exp->master->expecting--;
+        ip_conntrack_expect_put(exp);
 }
 
 void __ip_ct_expect_unlink_destroy(struct ip_conntrack_expect *exp)