From: Michail Bachmann <mb@emeraldcity.de>
To: Mel Gorman <mel@csn.ul.ie>
Cc: Christoph Lameter <cl@linux-foundation.org>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: PROBLEM: kernel BUG at mm/page_alloc.c:775
Date: Thu, 21 Jan 2010 01:10:07 +0100 [thread overview]
Message-ID: <201001210110.18569.mb@emeraldcity.de> (raw)
In-Reply-To: <20100118120315.GD7499@csn.ul.ie>
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> On Tue, Jan 12, 2010 at 03:25:23PM -0600, Christoph Lameter wrote:
> > On Sat, 9 Jan 2010, Michail Bachmann wrote:
> > > [ 48.505381] kernel BUG at mm/page_alloc.c:775!
> >
> > Somehow nodes got mixed up or the lookup tables for pages / zones are not
> > giving the right node numbers.
>
> Agreed. On this type of machine, I'm not sure how that could happen
> short of struct page information being corrupted. The range should
> always be aligned to a pageblock boundary and I cannot see how that
> would cross a zone boundary on this machine.
>
> Does this machine pass memtest?
I ran one pass with memtest86 without errors before posting this bug, but I
can let it run "all tests" for a while just to be sure it is not caused by
broken hw.
> Is there any chance the problem can be bisected?
I will give it a try, when the memtest is done.
Thanks.
CU Micha
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next prev parent reply other threads:[~2010-01-21 0:10 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-01-09 21:32 PROBLEM: kernel BUG at mm/page_alloc.c:775 Michail Bachmann
2010-01-12 21:25 ` Christoph Lameter
2010-01-18 12:03 ` Mel Gorman
2010-01-21 0:10 ` Michail Bachmann [this message]
2010-01-29 22:01 ` Michail Bachmann
2010-02-01 10:29 ` Mel Gorman
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