linux-kernel - Re: error: Eeek! page_mapcount(page) went negative! (-1) with different process and kernels

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Message-ID: <87y7e0mzp8.fsf@informatik.uni-tuebingen.de>
Date:	Thu, 18 Oct 2007 13:25:55 +0200
From:	Goswin von Brederlow <brederlo@...ormatik.uni-tuebingen.de>
To:	Arnaud Fontaine <arnaud@...esi.org>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: error: Eeek! page_mapcount(page) went negative! (-1) with  different process and kernels

Arnaud Fontaine <arnaud@...esi.org> writes:

>>>>>> "Dave" == Dave Jones <davej@...hat.com> writes:
>
>     Dave> Many of these that I've  seen have turned out to be a hardware
>     Dave> problem.  Try running memtest86+  on that machine for a while.
>     Dave>  It doesn't  catch all  problems, but  it will  highlight more
>     Dave> common memory faults.
>
> Hello,
>
> We ran memtest86+ before production, it  was about one month ago. Do you
> think it could come from that anyway?

I find that a lot of the time memtest does not reveal an error. Only
when you combine multiple sources or on random access do you get
errors. For example compiling a kernel while doing heavy I/O on the
disk. But that might just be me. Errors are rather random occurances.

Compiling a kernel repeadatly and multiple in parallel is usualy a
good test. If it sometimes fails to compile then it is near certain a
hardware error.

MfG
        Goswin
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