netdev - Re: [PATCH net] net/sched: act_ct: Fix leak of ct zone template on replace

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Date:   Wed, 18 Mar 2020 16:38:16 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     paulb@...lanox.com
Cc:     saeedm@...lanox.com, ozsh@...lanox.com,
        jakub.kicinski@...ronome.com, vladbu@...lanox.com,
        netdev@...r.kernel.org, jiri@...lanox.com, roid@...lanox.com
Subject: Re: [PATCH net] net/sched: act_ct: Fix leak of ct zone template on
 replace

From: Paul Blakey <paulb@...lanox.com>
Date: Wed, 18 Mar 2020 12:50:33 +0200

> Currently, on replace, the previous action instance params
> is swapped with a newly allocated params. The old params is
> only freed (via kfree_rcu), without releasing the allocated
> ct zone template related to it.
> 
> Call tcf_ct_params_free (via call_rcu) for the old params,
> so it will release it.
> 
> Fixes: b57dc7c13ea9 ("net/sched: Introduce action ct")
> Signed-off-by: Paul Blakey <paulb@...lanox.com>

Applied and queued up for -stable.