Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
Date:   Wed, 14 Jun 2023 09:01:26 -0700
From:   Jakub Kicinski <kuba@kernel.org>
To:     Sabrina Dubroca <sd@queasysnail.net>
Cc:     Fedor Pchelkin <pchelkin@ispras.ru>,
        "David S. Miller" <davem@davemloft.net>,
        Eric Dumazet <edumazet@google.com>,
        Paolo Abeni <pabeni@redhat.com>, Raed Salem <raeds@nvidia.com>,
        Lior Nahmanson <liorna@nvidia.com>,
        Saeed Mahameed <saeedm@nvidia.com>,
        Hannes Frederic Sowa <hannes@stressinduktion.org>,
        netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
        Alexey Khoroshilov <khoroshilov@ispras.ru>,
        lvc-project@linuxtesting.org
Subject: Re: [PATCH] net: macsec: fix double free of percpu stats
Message-ID: <20230614090126.149049b1@kernel.org>
In-Reply-To: <ZImx5pp98OSNnv4I@hog>
References: <20230613192220.159407-1-pchelkin@ispras.ru>
        <20230613200150.361bc462@kernel.org>
        <ZImx5pp98OSNnv4I@hog>
MIME-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit
Precedence: bulk

On Wed, 14 Jun 2023 14:26:14 +0200 Sabrina Dubroca wrote:
> > What prevents the device from being opened and used before
> > macsec_add_dev() has finished? I think we need a fix which 
> > would move this code before register_netdev(), instead :(  
> 
> Can the device be opened in parallel? We're under rtnl here.
> 
> If we want to move that code, then we'll also have to move the
> eth_hw_addr_inherit call that's currently in macsec's ndo_init: in
> case the user didn't give an SCI, we have to make it up based on the
> device's mac address (dev_to_sci(dev, ...)), whether it's set by the
> user or inherited. I can't remember if I had a good reason to put the
> inherit in ndo_init.

Ah, you're right, this is a link creation path.
-- 
pw-bot: ur