linux-kernel - Re: [PATCH net-next] sh_eth: remove open coded netif

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Message-ID: <20230323094034.5b021c65@kernel.org>
Date:   Thu, 23 Mar 2023 09:40:34 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     Geert Uytterhoeven <geert@...ux-m68k.org>
Cc:     Sergey Shtylyov <s.shtylyov@....ru>,
        Wolfram Sang <wsa+renesas@...g-engineering.com>,
        netdev@...r.kernel.org, linux-renesas-soc@...r.kernel.org,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Paolo Abeni <pabeni@...hat.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next] sh_eth: remove open coded netif_running()

On Thu, 23 Mar 2023 09:32:27 +0100 Geert Uytterhoeven wrote:
> Is there some protection against parallel execution of ndo_open()
> and get_stats()?

Nope - one is under rtnl_lock, the other under just RCU, IIRC.
So this patch just makes the race worse, but it was already
racy before.