netdev - Re: [PATCH v2 net-next 02/10] sctp: read sk->sk_bound_dev_if once in sctp

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Message-ID: <Yn61efcRXVLcgDGS@t14s.localdomain>
Date:   Fri, 13 May 2022 16:46:01 -0300
From:   Marcelo Ricardo Leitner <marcelo.leitner@...il.com>
To:     Eric Dumazet <eric.dumazet@...il.com>
Cc:     "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        netdev <netdev@...r.kernel.org>,
        Eric Dumazet <edumazet@...gle.com>,
        Neil Horman <nhorman@...driver.com>,
        Vlad Yasevich <vyasevich@...il.com>
Subject: Re: [PATCH v2 net-next 02/10] sctp: read sk->sk_bound_dev_if once in
 sctp_rcv()

On Fri, May 13, 2022 at 11:55:42AM -0700, Eric Dumazet wrote:
> From: Eric Dumazet <edumazet@...gle.com>
> 
> sctp_rcv() reads sk->sk_bound_dev_if twice while the socket
> is not locked. Another cpu could change this field under us.
> 
> Fixes: 0fd9a65a76e8 ("[SCTP] Support SO_BINDTODEVICE socket option on incoming packets.")

2005.. :-)

> Signed-off-by: Eric Dumazet <edumazet@...gle.com>
> Cc: Neil Horman <nhorman@...driver.com>
> Cc: Vlad Yasevich <vyasevich@...il.com>
> Cc: Marcelo Ricardo Leitner <marcelo.leitner@...il.com>

Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@...il.com>