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Date:   Wed, 1 Jul 2020 13:50:14 +1000
From:   Herbert Xu <>
To:     Eric Dumazet <>
Cc:     Mathieu Desnoyers <>,
        David Miller <>,
        Linus Torvalds <>,
        LKML <>,
        netdev <>,
        Yuchung Cheng <>,
        Jonathan Rajotte-Julien <>
Subject: Re: [regression] TCP_MD5SIG on established sockets

On Tue, Jun 30, 2020 at 08:36:51PM -0700, Eric Dumazet wrote:
> If I knew so many people were excited about TCP / MD5, I would have
> posted all my patches on lkml ;)
> Without the smp_wmb() we would still need something to prevent KMSAN
> from detecting that we read uninitialized bytes,
> if key->keylen is increased.  (initial content of key->key[] is garbage)
> Something like this :

LGTM.  Thanks,
Email: Herbert Xu <>
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