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Message-Id: <20220923020046.8021-1-hbh25y@gmail.com> Date: Fri, 23 Sep 2022 10:00:46 +0800 From: Hangyu Hua <hbh25y@...il.com> To: jhs@...atatu.com, xiyou.wangcong@...il.com, jiri@...nulli.us, davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org, pabeni@...hat.com, paulb@...lanox.com Cc: netdev@...r.kernel.org, linux-kernel@...r.kernel.org, Hangyu Hua <hbh25y@...il.com> 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 <hbh25y@...il.com> --- 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; spin_lock_bh(&c->tcf_lock); 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; +cleanup_params: + if (params->tmpl) + nf_ct_put(params->tmpl); cleanup: if (goto_ch) tcf_chain_put_by_act(goto_ch); -- 2.34.1
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