Date: Thu, 5 Jan 2006 06:15:20 -0500
From: Dave Jones <davej@redhat.com>
To: Arjan van de Ven <arjan@infradead.org>
Cc: Andrew Morton <akpm@osdl.org>, nickpiggin@yahoo.com.au,
       linux-kernel@vger.kernel.org
Subject: Re: mm/rmap.c negative page map count BUG.
Message-ID: <20060105111520.GL20809@redhat.com>
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	Arjan van de Ven <arjan@infradead.org>,
	Andrew Morton <akpm@osdl.org>, nickpiggin@yahoo.com.au,
	linux-kernel@vger.kernel.org
References: <20060103082609.GB11738@redhat.com> <43BA630F.1020805@yahoo.com.au> <20060103135312.GB18060@redhat.com> <20060104155326.351a9c01.akpm@osdl.org> <20060105074718.GF20809@redhat.com> <1136448712.2920.4.camel@laptopd505.fenrus.org>
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On Thu, Jan 05, 2006 at 09:11:51AM +0100, Arjan van de Ven wrote:
 > 
 > > Quite a few Fedora users have hit it over the last year,
 > > but what I find fascinating is that there's not a single
 > > occurance of "BUG at mm/rmap.c" in our 2.6.9 based RHEL4 bug reports.
 > 
 > could mean it's caused by consumer hardware code...

Yeah. People buying enterprise distros do tend to buy branded RAM
with goodies like ECC from big name suppliers instead of a cheap $20
noname DIMM from "Joe's computers".

So it *could* be a lot of these are crappy hardware, especially
as some of the reports do indicate that the problem went away
when they upgraded their RAM.  Some of the others though, I'm
not so sure.

		Dave

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