Subject: Re: [PATCH] netfilter: mark racy access on ext->gen_id

From: Pablo Neira Ayuso <[email-masked]>
Date: Thu, 25 Apr 2024 11:36:11 +0200

On Tue, Apr 23, 2024 at 07:50:22PM +0800, linke li wrote:
> In __nf_ct_ext_find(), ext->gen_id can be changed by 
> nf_ct_ext_valid_post(), using WRITE_ONCE. Mark data races on ext->gen_id
> as benign using READ_ONCE. 
> 
> This patch is aimed at reducing the number of benign races reported by
> KCSAN in order to focus future debugging effort on harmful races.

There are a more uses ext->gen_id in the code, my understanding this
patch is just a stub.