linux-kernel - [PATCH 5.8 054/633] net/sched: act_gate: Unlock ->tcfa_lock in tc_setup_flow

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Message-Id: <20201027135525.238226269@linuxfoundation.org>
Date:   Tue, 27 Oct 2020 14:46:37 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Guillaume Nault <gnault@...hat.com>,
        Cong Wang <xiyou.wangcong@...il.com>,
        Jakub Kicinski <kuba@...nel.org>
Subject: [PATCH 5.8 054/633] net/sched: act_gate: Unlock ->tcfa_lock in tc_setup_flow_action()

From: Guillaume Nault <gnault@...hat.com>

[ Upstream commit b130762161374b1ef31549bef8ebd4abeb998d94 ]

We need to jump to the "err_out_locked" label when
tcf_gate_get_entries() fails. Otherwise, tc_setup_flow_action() exits
with ->tcfa_lock still held.

Fixes: d29bdd69ecdd ("net: schedule: add action gate offloading")
Signed-off-by: Guillaume Nault <gnault@...hat.com>
Acked-by: Cong Wang <xiyou.wangcong@...il.com>
Link: https://lore.kernel.org/r/12f60e385584c52c22863701c0185e40ab08a7a7.1603207948.git.gnault@redhat.com
Signed-off-by: Jakub Kicinski <kuba@...nel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 net/sched/cls_api.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/net/sched/cls_api.c
+++ b/net/sched/cls_api.c
@@ -3707,7 +3707,7 @@ int tc_setup_flow_action(struct flow_act
 			entry->gate.num_entries = tcf_gate_num_entries(act);
 			err = tcf_gate_get_entries(entry, act);
 			if (err)
-				goto err_out;
+				goto err_out_locked;
 		} else {
 			err = -EOPNOTSUPP;
 			goto err_out_locked;