act_ipt: fix a bind refcnt leak
And avoid calling tcf_hash_check() twice.
Fixes: a57f19d30b2d ("net sched: ipt action fix late binding")
Cc: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/sched/act_ipt.c b/net/sched/act_ipt.c
index 9f002ad..d4bd19e 100644
--- a/net/sched/act_ipt.c
+++ b/net/sched/act_ipt.c
@@ -121,10 +121,13 @@
}
td = (struct xt_entry_target *)nla_data(tb[TCA_IPT_TARG]);
- if (nla_len(tb[TCA_IPT_TARG]) < td->u.target_size)
+ if (nla_len(tb[TCA_IPT_TARG]) < td->u.target_size) {
+ if (exists)
+ tcf_hash_release(a, bind);
return -EINVAL;
+ }
- if (!tcf_hash_check(tn, index, a, bind)) {
+ if (!exists) {
ret = tcf_hash_create(tn, index, est, a, sizeof(*ipt), bind,
false);
if (ret)