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Date:   Fri, 23 Sep 2022 10:00:46 +0800
From:   Hangyu Hua <>
        Hangyu Hua <>
Subject: [PATCH net v2] net: sched: act_ct: fix possible refcount leak in tcf_ct_init()

nf_ct_put need to be called to put the refcount got by tcf_ct_fill_params
to avoid possible refcount leak when tcf_ct_flow_table_get fails.

Fixes: c34b961a2492 ("net/sched: act_ct: Create nf flow table per zone")
Signed-off-by: Hangyu Hua <>

v2: use a new label to put the refcount.

 net/sched/act_ct.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/net/sched/act_ct.c b/net/sched/act_ct.c
index d55afb8d14be..5950974ae8f6 100644
--- a/net/sched/act_ct.c
+++ b/net/sched/act_ct.c
@@ -1394,7 +1394,7 @@ static int tcf_ct_init(struct net *net, struct nlattr *nla,
 	err = tcf_ct_flow_table_get(net, params);
 	if (err)
-		goto cleanup;
+		goto cleanup_params;
 	goto_ch = tcf_action_set_ctrlact(*a, parm->action, goto_ch);
@@ -1409,6 +1409,9 @@ static int tcf_ct_init(struct net *net, struct nlattr *nla,
 	return res;
+	if (params->tmpl)
+		nf_ct_put(params->tmpl);
 	if (goto_ch)

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