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authorWANG Cong <xiyou.wangcong@gmail.com>2016-06-13 13:44:14 -0700
committerDavid S. Miller <davem@davemloft.net>2016-06-15 12:31:35 -0700
commitd15eccea69b96a5116169688dcc9baf6d1ce2751 (patch)
treefa7a5ffb6152bad3d07a785d1d435eae55db2d76 /net
parent3d7c8257d999bdf8fa77ffd9be775c7b58cc7b69 (diff)
downloadlinux-d15eccea69b96a5116169688dcc9baf6d1ce2751.tar.gz
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>
Diffstat (limited to 'net')
-rw-r--r--net/sched/act_ipt.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/net/sched/act_ipt.c b/net/sched/act_ipt.c
index 9f002ada7074..d4bd19ee5822 100644
--- a/net/sched/act_ipt.c
+++ b/net/sched/act_ipt.c
@@ -121,10 +121,13 @@ static int __tcf_ipt_init(struct tc_action_net *tn, struct nlattr *nla,
}
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)