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net: sched: fix unbalance in the error path of tca_action_flush()

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When tca_action_flush() calls the action walk() and gets an error,
a successful call to nla_nest_start() is not followed by a call to
nla_nest_cancel(). It's harmless, as the skb is freed in the error
path - but it's worth to fix this unbalance.

Signed-off-by: Davide Caratti <dcaratti@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Davide Caratti 2018-02-15 15:50:57 +01:00 committed by David S. Miller
parent e5fe068a50
commit 66dede2d6b
1 changed files with 3 additions and 1 deletions
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4
net/sched/act_api.c
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@ -938,8 +938,10 @@ static int tca_action_flush(struct net *net, struct nlattr *nla,
goto out_module_put;
err = ops->walk(net, skb, &dcb, RTM_DELACTION, ops);
if (err <= 0)
if (err <= 0) {
nla_nest_cancel(skb, nest);
goto out_module_put;
}
nla_nest_end(skb, nest);