linux-kernel - RE: Kernel hangs in SMP + VMware environment.

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Message-ID: <D3C12B2AD838B44DA9D6B2CA334246D00DC43DE5E8@PA-EXMBX04.vmware.com>
Date:	Mon, 19 May 2008 18:08:56 -0700
From:	Alok Kataria <akataria@...are.com>
To:	Jan Engelhardt <jengelh@...ozas.de>
CC:	"penguin-kernel@...ove.sakura.ne.jp" 
	<penguin-kernel@...ove.sakura.ne.jp>,
	"devzero@....de" <devzero@....de>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Daniel Hecht <dhecht@...are.com>
Subject: RE: Kernel hangs in SMP + VMware environment.

________________________________________
From: jengelh@...ereign.computergmbh.de [jengelh@...ereign.computergmbh.de] On Behalf Of Jan Engelhardt [jengelh@...ozas.de]
Sent: Sunday, May 18, 2008 12:45 PM
To: Alok Kataria
Cc: penguin-kernel@...ove.sakura.ne.jp; devzero@....de; linux-kernel@...r.kernel.org; Daniel Hecht
Subject: Re: Kernel hangs in SMP + VMware environment.

On Wednesday 2008-05-14 20:30, Alok Kataria wrote:
>On Wed, May 14, 2008 at 4:00 AM, Tetsuo Handa
><penguin-kernel@...ove.sakura.ne.jp> wrote:
>> Hello.
>>
>> Roland wrote:
>>> maybe related to http://bugzilla.kernel.org/show_bug.cgi?id=9834  ?
>> Thank you for URL.
>> My bug seems to be timer related.

I too noticed it; clocksource=pit is my current workaround.

ANK> What kernel do you see this with ? Did you get a a chance to try the patch
ANK> which I sent earlier on this thread ?

>>> you say "recent" , so this does happen from 2.6.21 to 2.6.26rc2 ?
>
>> I don't know exact version, but I don't experience this problem
>> in earlier kernels (e.g. Fedora Core 5 which uses kernel 2.6.20).

It does not happen for 2.6.23, and IIRC it did not with 2.6.24
either; 2.6.25-rcish is the first to show this behavior.

ANK> Are you sure you didn't see it with 2.6.23/2.6.24 ?
ANK> i am assuming your test case is also similar to that of Tetsuo.
ANK> Multiple guests running simoultaneously.

Oh well, time to bisect.

ANK> Let me know if you get anything their.

Thanks,
Alok
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