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Date:   Wed, 21 Sep 2022 12:00:16 +0000
To:     Ziyang Xuan <>
Subject: Re: [PATCH net-next] net/af_packet: registration process optimization in


This patch was applied to netdev/net-next.git (master)
by David S. Miller <>:

On Thu, 15 Sep 2022 09:08:35 +0800 you wrote:
> Now, register_pernet_subsys() and register_netdevice_notifier() are both
> after sock_register(). It can create PF_PACKET socket and process socket
> once sock_register() successfully. It is possible PF_PACKET socket is
> creating but register_pernet_subsys() and register_netdevice_notifier()
> are not registered yet. Thus net->packet.sklist_lock and net->packet.sklist
> will be accessed without initialization that is done in packet_net_init().
> Although this is a low probability scenario.
> [...]

Here is the summary with links:
  - [net-next] net/af_packet: registration process optimization in packet_init()

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