linux-kernel - Re: [BUG] 2.6.30-rc3: BUG triggered on some hugepage usages

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Date:	Mon, 27 Apr 2009 18:15:38 +1000
From:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
To:	Mel Gorman <mel@....ul.ie>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	linuxppc-dev@...abs.org
Subject: Re: [BUG] 2.6.30-rc3: BUG triggered on some hugepage usages

On Fri, 2009-04-24 at 10:51 +0100, Mel Gorman wrote:
> I'm seeing some tests with sysbench+postgres+large pages fail on ppc64
> although a very clear pattern is not forming as to what exactly is
> causing it. However, the libhugetlbfs regression tests (make && make
> func) are triggering the following oops when calling mlock() and so
> are
> likely related.

This would be a spurrious WARN_ON().. the test I added in there should
not apply to huge pages. However, I don't see that causing a functional
problem with sysbench+postgres

Ben.


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