Subject: Re: mm/rmap.c negative page map count BUG.
From: Arjan van de Ven <arjan@infradead.org>
To: Dave Jones <davej@redhat.com>
Cc: Andrew Morton <akpm@osdl.org>, nickpiggin@yahoo.com.au,
       linux-kernel@vger.kernel.org
In-Reply-To: <20060105111520.GL20809@redhat.com>
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>
	 <20060105111520.GL20809@redhat.com>
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Date: Thu, 05 Jan 2006 12:18:43 +0100
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On Thu, 2006-01-05 at 06:15 -0500, Dave Jones wrote:
> 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.

it could also be some consumer-mostly device, or driver thereof. say
video capture or weird usb gizmo

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