linux-kernel - Re: [stable] Boot failure with 2.6.27.46 on Xeon E5620 (Westmere EP)

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Message-Id: <2293F1A2-B4DE-4C15-9BAC-CC2E546943D0@CS.Princeton.EDU>
Date:	Wed, 2 Jun 2010 19:54:29 -0400
From:	""S.Çağlar Onur"" <caglar@...Princeton.EDU>
To:	Suresh Siddha <suresh.b.siddha@...el.com>
Cc:	Greg KH <greg@...ah.com>, "stable@...nel.org" <stable@...nel.org>,
	"hpa@...or.com" <hpa@...or.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"Song, Youquan" <youquan.song@...el.com>
Subject: Re: [stable] Boot failure with 2.6.27.46 on Xeon E5620 (Westmere EP)

Hi Suresh,

On May 25, 2010, at 8:24 PM, Suresh Siddha wrote:

> On Tue, 2010-05-25 at 13:51 -0700, Greg KH wrote:
>> On Tue, May 25, 2010 at 04:32:16PM -0400, "S.Çağlar Onur" wrote:
>>> Hi Greg,
>>> 
>>> On May 25, 2010, at 11:53 AM, Greg KH wrote:
>>> 
>>>> On Tue, May 25, 2010 at 11:10:28AM -0400, "S.Çağlar Onur" wrote:
>>>>> Hi,
>>>>> 
>>>>> We are observing boot failures [1] & [2] on some of our servers (Dell
>>>>> r410) with 2.6.27-stable kernels. I found following commit in upstream
>>>>> tree via a quick search (but I haven't tried it yet) so I don't know
>>>>> whether I'm on the right track or not. 
>>>>> 
>>>>> Please let me know if anything else is needed...
>>>> 
>>>> Has any .27 kernel worked on these machines?  If so, can you narrow it
>>>> down to the patch that caused the problem?
>>> 
>>> I don't think any .27 kernel worked on those machines before. But in
>>> any case I'll try (I don't have a physical access to those machines as
>>> they are located in China) an older .27 release to see.
>> 
>> Ok, so it isn't a regression, which is what I want to know.
>> 
>> New hardware like this, probably will only work on newer kernel
>> versions, so please use those instead :)
> 
> I can't think of any known issues in 2.6.27 that can lead to this kind
> of boot failure on WSM-EP. Caglar, It will be nice if you can do git
> bisect between working and non-working kernels.

Neither 2.6.27 nor 2.6.27.45 not able to boot those servers, according to the on-site admins the boot stuck at following stage[1].

> thanks,
> suresh


[1] http://www.cs.princeton.edu/~caglar/2.6.27/45.png

Best regards,
--
S.Çağlar Onur <caglar@...princeton.edu>

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