netdev - Re: [PATCH net] net: silence KCSAN warnings about sk->sk

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Date:   Wed, 9 Oct 2019 21:52:23 -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>,
        syzbot <syzkaller@...glegroups.com>
Subject: Re: [PATCH net] net: silence KCSAN warnings about
 sk->sk_backlog.len reads

On Wed,  9 Oct 2019 15:41:03 -0700, Eric Dumazet wrote:
> sk->sk_backlog.len can be written by BH handlers, and read
> from process contexts in a lockless way.
> 
> Note the write side should also use WRITE_ONCE() or a variant.
> We need some agreement about the best way to do this.
> 
> syzbot reported :
> 
> [...]
> 
> Signed-off-by: Eric Dumazet <edumazet@...gle.com>
> Reported-by: syzbot <syzkaller@...glegroups.com>

..and applied, thank you!