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Date:   Wed,  8 May 2019 15:56:07 -0700
From:   Jakub Kicinski <>
        Pieter Jansen van Vuuren 
        Dan Carpenter <>,
        Jakub Kicinski <>
Subject: [PATCH net] net/sched: avoid double free on matchall reoffload

From: Pieter Jansen van Vuuren <>

Avoid freeing cls_mall.rule twice when failing to setup flow_action
offload used in the hardware intermediate representation. This is
achieved by returning 0 when the setup fails but the skip software
flag has not been set.

Fixes: f00cbf196814 ("net/sched: use the hardware intermediate representation for matchall")
Reported-by: Dan Carpenter <>
Signed-off-by: Pieter Jansen van Vuuren <>
Reviewed-by: Jakub Kicinski <>
 net/sched/cls_matchall.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/net/sched/cls_matchall.c b/net/sched/cls_matchall.c
index 1e98a517fb0b..db42d97a2006 100644
--- a/net/sched/cls_matchall.c
+++ b/net/sched/cls_matchall.c
@@ -308,6 +308,7 @@ static int mall_reoffload(struct tcf_proto *tp, bool add, tc_setup_cb_t *cb,
 			NL_SET_ERR_MSG_MOD(extack, "Failed to setup flow action");
 			return err;
+		return 0;
 	err = cb(TC_SETUP_CLSMATCHALL, &cls_mall, cb_priv);

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