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Date:      Sun, 31 Jan 2016 22:13:18 +0100
From:      Svatopluk Kraus <onwahe@gmail.com>
To:        Tom Vijlbrief <tvijlbrief@gmail.com>
Cc:        bob prohaska <fbsd@www.zefox.net>, "freebsd-arm@freebsd.org" <freebsd-arm@freebsd.org>
Subject:   Re: Files needed to analyze kernel panic
Message-ID:  <CAFHCsPWW=x7NDLjT%2Bix-69Y_6hrVkx4cBHevtiay5VUf5Lo3Xw@mail.gmail.com>
In-Reply-To: <CAOQrpVd4%2BAsuoC%2Bwcdi7W=nAwDX8=NLeeyM9qzPeuT01Sr%2BR1g@mail.gmail.com>
References:  <20160131012448.GB75928@www.zefox.net> <CAOQrpVd4%2BAsuoC%2Bwcdi7W=nAwDX8=NLeeyM9qzPeuT01Sr%2BR1g@mail.gmail.com>

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I just wonder if you are running stress2 as root?
BTW, it would be nice to know why there is a note in stress2 README to
not run the syscall test as root.

Svata

On Sun, Jan 31, 2016 at 3:27 PM, Tom Vijlbrief <tvijlbrief@gmail.com> wrote:
> Op zo 31 jan. 2016 om 02:27 schreef bob prohaska <fbsd@www.zefox.net>:
>
>> Hi all,
>>
>> It's  possible to reliably crash an RPI2 running 11-CURRENT using stress2.
>> In most cases the crash occurs during the syscall tests and then usually
>> the opening
>> line is of the form "translation fault L2" [sometimes L1].
>>
>> What information is useful to collect for purposes of debugging by others
>> off-host?
>> So far I'm aware of backtrace, kernel and modules, vmcore, core.txt and
>> recently
>> kernel.debug (three places). One update/build/test/crash cycle per day is
>> possible.
>>
>>
> I can indeed reproduce the crash on my RPI2 without too much trouble with
> just the syscall tests.
>
> Steps to reproduce:
>
> download http://people.freebsd.org/~pho/stress/src/stress2.tgz
> and extract it.
>
> do a "make -i" do build the binary tests.
>
> Create a scall.cfg file with the following contents:
> ################
> . ./default.cfg
>
> export RUNTIME=15s
> export TESTPROGS="testcases/syscall/syscall"
>
> export syscallKILL=1
> export syscallNODELAY=1
> export syscallLOAD=100
> ################
>
> run:
>
> ./run.sh scall.cfg
>
> and it will crash after 5 to 15 minutes with a translation fault panic.
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