netdev - Re: net/ipv4: divide error in __tcp_select

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Message-ID: <CADVnQy=GA_neQ2CsXmdZbPozcd-N6iUoX-jXZkNgXocPVo2efg@mail.gmail.com>
Date:   Thu, 31 Aug 2017 15:37:13 -0400
From:   Neal Cardwell <ncardwell@...gle.com>
To:     David Miller <davem@...emloft.net>
Cc:     idaifish <idaifish@...il.com>,
        Alexey Kuznetsov <kuznet@....inr.ac.ru>,
        Netdev <netdev@...r.kernel.org>, syzkaller@...glegroups.com,
        Wei Wang <weiwan@...gle.com>,
        Eric Dumazet <edumazet@...gle.com>
Subject: Re: net/ipv4: divide error in __tcp_select_window

On Thu, Aug 31, 2017 at 3:25 PM, David Miller <davem@...emloft.net> wrote:
>
> From: Neal Cardwell <ncardwell@...gle.com>
> Date: Thu, 31 Aug 2017 07:11:28 -0400
>
> > Thanks for the report. I believe this tcp_recvmsg  => tcp_cleanup_rbuf
> >  => __tcp_select_window divide-by-zero issue was fixed in May by Wei,
> > in:
> >
> >  499350a5a6e7 tcp: initialize rcv_mss to TCP_MIN_MSS instead of 0
> >  https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git/commit/?id=499350a5a6e7
> >
> > Looks like we should probably mark this as a -stable candidate, so
> > that it will eventually make it to 4.4.y, 4.9.y, 4.12.y users, etc. (I
> > don't see the commit in those stable branches.)
>
> Ok, queued up for -stable, thanks.

Great. Thanks!

neal