netdev - Re: [PATCH net] net: add {READ|WRITE}_ONCE() annotations on ->rskq_accept

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Date:   Wed, 9 Oct 2019 21:49:52 -0700
From:   Jakub Kicinski <jakub.kicinski@...ronome.com>
To:     Eric Dumazet <edumazet@...gle.com>
Cc:     "David S . Miller" <davem@...emloft.net>,
        netdev <netdev@...r.kernel.org>,
        Eric Dumazet <eric.dumazet@...il.com>
Subject: Re: [PATCH net] net: add {READ|WRITE}_ONCE() annotations on
 ->rskq_accept_head

On Wed,  9 Oct 2019 14:51:20 -0700, Eric Dumazet wrote:
> reqsk_queue_empty() is called from inet_csk_listen_poll() while
> other cpus might write ->rskq_accept_head value.
> 
> Use {READ|WRITE}_ONCE() to avoid compiler tricks
> and potential KCSAN splats.
> 
> Fixes: fff1f3001cc5 ("tcp: add a spinlock to protect struct request_sock_queue")
> Signed-off-by: Eric Dumazet <edumazet@...gle.com>

Applied, thanks!