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Date:   Wed, 20 May 2020 08:50:54 -0700
From:   Stephen Hemminger <>
To:     Nikolay Aleksandrov <>
Subject: Re: [PATCH net v3] net: bridge: fix vlan stats use-after-free on

On Fri, 16 Nov 2018 18:50:01 +0200
Nikolay Aleksandrov <> wrote:

> +	if (v->priv_flags & BR_VLFLAG_PER_PORT_STATS)
>  		free_percpu(v->stats);

Why not not v->stats == NULL as a flag instead?

Then the fact that free_percpu(NULL) is a Nop would mean less code
in the bridge driver.

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