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act_ipt: fix a bind refcnt leak 

And avoid calling tcf_hash_check() twice.

Fixes: a57f19d30b ("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>
steinar/wifi_calib_4_9_kernel
WANG Cong 2016-06-13 13:44:14 -07:00 committed by David S. Miller
parent 3d7c8257d9
commit d15eccea69
1 changed files with 5 additions and 2 deletions
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7
net/sched/act_ipt.c
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@ -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)