'Re: [Pcc] csmith fuzzing?'

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List:       pcc-list
Subject:    Re: [Pcc] csmith fuzzing?
From:       Anders Magnusson <ragge () ludd ! ltu ! se>
Date:       2017-09-18 9:20:16
Message-ID: b6c156c6-36a5-e946-5c81-9365005c97da () ludd ! ltu ! se
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Den 2017-09-18 kl. 11:04, skrev Janne Johansson:
> 2017-09-14 15:43 GMT+02:00 Anders Magnusson <ragge@ludd.ltu.se 
> <mailto:ragge@ludd.ltu.se>>:
>
>
>         I have a machine with 64 cores and 128 hyperthreads. If you
>         want me
>         to run it for you for a few days on that box for the hell of
>         it I can.
>
>     Yes please!  I love bug reports!  :-)
>
>
> I ran afl-fuzz over pcc (the compiler part only, .c -> .o not full 
> linking) over the weekend,
> on a 8-core box, which resulted in a total of some 8-10M executions, 
> and a lot of leftover tmpfiles
> (/tmp/ctm.*) but ZERO crashes. I have some hangs, but I don't think 
> they are reproducible,
> and may just be the fuzzer timer killing the test so it won't get stuck.
>
> Kodus to that codebase, few programs hold up to 8 cpu-weekends of 
> fuzzed inputs.
Nice, thanks Janne :-)

Hm, can you send me a bunch of the ctm files?  They may be an indication 
of some other bugs.

-- Ragge

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    Den 2017-09-18 kl. 11:04, skrev Janne Johansson:<br>
    <blockquote type="cite"
cite="mid:CAA6-MF8Q8a4T2sNCryiENYeZ2VyOzivzg4uOxv9JyaQCQBBAbg@mail.gmail.com">
      <div dir="ltr">
        <div class="gmail_extra">
          <div class="gmail_quote">2017-09-14 15:43 GMT+02:00 Anders
            Magnusson <span dir="ltr">&lt;<a
                href="mailto:ragge@ludd.ltu.se" target="_blank"
                moz-do-not-send="true">ragge@ludd.ltu.se</a>&gt;</span>:<br>
            <blockquote class="gmail_quote" style="margin:0 0 0
              .8ex;border-left:1px #ccc solid;padding-left:1ex"><span
                class="">
                <blockquote class="gmail_quote" style="margin:0 0 0
                  .8ex;border-left:1px #ccc solid;padding-left:1ex"><br>
                  I have a machine with 64 cores and 128 hyperthreads.
                  If you want me<br>
                  to run it for you for a few days on that box for the
                  hell of it I can.<br>
                  <br>
                </blockquote>
              </span>
              Yes please!  I love bug reports!  :-)<br>
              <br>
            </blockquote>
            <div><br>
            </div>
            <div>I ran afl-fuzz over pcc (the compiler part only, .c
              -&gt; .o not full linking) over the weekend,</div>
            <div>on a 8-core box, which resulted in a total of some
              8-10M executions, and a lot of leftover tmpfiles</div>
            <div>(/tmp/ctm.*) but ZERO crashes. I have some hangs, but I
              don't think they are reproducible,</div>
            <div>and may just be the fuzzer timer killing the test so it
              won't get stuck. </div>
          </div>
          <div class="gmail_extra"><br>
          </div>
          Kodus to that codebase, few programs hold up to 8 cpu-weekends
          of fuzzed inputs.<br>
        </div>
      </div>
    </blockquote>
    Nice, thanks Janne :-)<br>
    <br>
    Hm, can you send me a bunch of the ctm files?  They may be an
    indication of some other bugs.<br>
    <br>
    -- Ragge<br>
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