linux-kernel - Re: [BUG] 2.6.25-rc4 hang/softlockups after freeing hugepages

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Date:	Thu, 06 Mar 2008 13:19:13 -0500
From:	Lee Schermerhorn <Lee.Schermerhorn@...com>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	linux-kernel <linux-kernel@...r.kernel.org>,
	linux-mm <linux-mm@...ck.org>, Adam Litke <agl@...ibm.com>,
	Nishanth Aravamudan <nacc@...ibm.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Mel Gorman <mel@....ul.ie>, Eric Whitney <eric.whitney@...com>,
	Arjan van de Ven <arjan@...radead.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>
Subject: Re: [BUG] 2.6.25-rc4 hang/softlockups after freeing hugepages

On Thu, 2008-03-06 at 18:45 +0100, Ingo Molnar wrote:
> * Lee Schermerhorn <Lee.Schermerhorn@...com> wrote:
> 
> > Test platform: HP Proliant DL585 server - 4 socket, dual core AMD with 
> > 32GB memory.
> 
> does the patch below change the problem in any way? (it fixes a rare 
> hugetlbfs related memory leak)

I'll try it.  I didn't actually fault in any hugepages in my last test,
so I wouldn't have expected page tables to be involved.  I'll let you
know.

Lee


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