linux-kernel - Re: [RESEND][RFC PATCH 0/6] Fork brute force attack mitigation (fbfam)

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Message-ID: <20200912101606.GB3041@ubuntu>
Date:   Sat, 12 Sep 2020 14:24:34 +0200
From:   John Wood <john.wood@....com>
To:     Kees Cook <keescook@...omium.org>
Cc:     kernel-hardening@...ts.openwall.com, John Wood <john.wood@....com>,
        Jann Horn <jannh@...gle.com>,
        Matthew Wilcox <willy@...radead.org>,
        Jonathan Corbet <corbet@....net>,
        Alexander Viro <viro@...iv.linux.org.uk>,
        Ingo Molnar <mingo@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Juri Lelli <juri.lelli@...hat.com>,
        Vincent Guittot <vincent.guittot@...aro.org>,
        Dietmar Eggemann <dietmar.eggemann@....com>,
        Steven Rostedt <rostedt@...dmis.org>,
        Ben Segall <bsegall@...gle.com>, Mel Gorman <mgorman@...e.de>,
        Luis Chamberlain <mcgrof@...nel.org>,
        Iurii Zaikin <yzaikin@...gle.com>,
        James Morris <jmorris@...ei.org>,
        "Serge E. Hallyn" <serge@...lyn.com>, linux-doc@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        linux-security-module@...r.kernel.org
Subject: Re: [RESEND][RFC PATCH 0/6] Fork brute force attack mitigation
 (fbfam)

On Sat, Sep 12, 2020 at 12:55:03AM -0700, Kees Cook wrote:
> On Fri, Sep 11, 2020 at 04:48:06PM +0200, John Wood wrote:
> > My original patch serie is composed of 9 patches, so the 3 lasts are lost.
> > Kees: Have you removed them for some reason? Can you send them for review?
> >
> > security/fbfam: Add two new prctls to enable and disable the fbfam feature
> > https://github.com/johwood/linux/commit/8a36399847213e7eb7b45b853568a53666bd0083
> >
> > Documentation/security: Add documentation for the fbfam feature
> > https://github.com/johwood/linux/commit/fb46804541f5c0915f3f48acefbe6dc998815609
> >
> > MAINTAINERS: Add a new entry for the fbfam feature
> > https://github.com/johwood/linux/commit/4303bc8935334136c6ef47b5e50b87cd2c472c1f
>
> Oh, hm, I'm not sure where they went. I think they were missing from my
> inbox when I saved your series from email. An oversight on my part;
> apologies!

I sent the full serie to Matthew Wilcox <willy@...radead.org> only, as he
wanted to help re-sending the full serie. Then I saw that only 6 patches
appeared in the linux-doc mailing list.

I can try to send the three pending patches in different stages (for example
one patch every 4 or 5 hours) to avoid blocking my email. I hope. Or I can
send the three pending patches only to the kernel-hardening mailing list
and you re-send to all the people involved. Or any other solution you
propose. It's up to you.

> > Is there a problem if I ask for some guidance (replying to this thread)
> > during the process to do my second patch series?
>
> Please feel free! I'm happy to help. :)

It's a pleasure working with you. Thanks a lot.

> --
> Kees Cook

Regards,
John Wood