WARNING - OLD ARCHIVES

This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
   
 
 
Xen 
 
Home Products Support Community News
 
   
 

xen-devel

Re: [Xen-devel] Re: 2.6.37-rc1 mainline domU - BUG: unable to handle ker

To: Bruce Edge <bruce.edge@xxxxxxxxx>
Subject: Re: [Xen-devel] Re: 2.6.37-rc1 mainline domU - BUG: unable to handle kernel paging request
From: Jeremy Fitzhardinge <jeremy@xxxxxxxx>
Date: Thu, 02 Dec 2010 10:28:40 -0800
Cc: Boris Derzhavets <bderzhavets@xxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxx, Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
Delivery-date: Thu, 02 Dec 2010 10:29:40 -0800
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
In-reply-to: <AANLkTimErriqP+G7DiVzZp9WJpHYEseX-Wo+aA4vuKg9@xxxxxxxxxxxxxx>
List-help: <mailto:xen-devel-request@lists.xensource.com?subject=help>
List-id: Xen developer discussion <xen-devel.lists.xensource.com>
List-post: <mailto:xen-devel@lists.xensource.com>
List-subscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
References: <AANLkTim6OyguwUPVryBjw2RJYoiiW_cE10yw1T2pzpEJ@xxxxxxxxxxxxxx> <697216.62238.qm@xxxxxxxxxxxxxxxxxxxxxxxxxxx> <AANLkTi=_gdYqY5xTE73_oR56wVNa00DrJz3iG8b=KDO8@xxxxxxxxxxxxxx> <4CF73DCF.4010200@xxxxxxxx> <AANLkTi=KTY_0JxzTrYVw8Gcpgwhrsw7tUHmk2yxr2dBX@xxxxxxxxxxxxxx> <AANLkTimErriqP+G7DiVzZp9WJpHYEseX-Wo+aA4vuKg9@xxxxxxxxxxxxxx>
Sender: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
User-agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.12) Gecko/20101103 Fedora/1.0-0.33.b2pre.fc14 Lightning/1.0b3pre Thunderbird/3.1.6
On 12/02/2010 10:05 AM, Bruce Edge wrote:
> On Thu, Dec 2, 2010 at 6:41 AM, Bruce Edge <bruce.edge@xxxxxxxxx> wrote:
>>
>> On Wed, Dec 1, 2010 at 10:33 PM, Jeremy Fitzhardinge <jeremy@xxxxxxxx>
>> wrote:
>>> On 12/01/2010 01:32 PM, Bruce Edge wrote:
>>>> I just checked the recently released 2.6.73-rc4,
>>> Do you mean mainline 2.6.37-rc4, or the one in xen/next-2.6.37?
>> mainline
>>
>>>>  and while the BUG
>>>> signature is different, it still fails under NFS accesses. This is
>>>> 100% recreatable.
>>> Please try this patch which is queued up for mainline.  It's already in
>>> xen/next-2.6.37.
>> After testing the mainline .37 I also tried xen/next-2.6.37 with the same
>> result. At least, I still hit a BUG after accessing an NFS mount. I didn't
>> compare the stack, but the BUG condition looked the same.
>> I'll reconfirm the location and traceback of the xen/next kernel.
>>
>> -Bruce
>>
>>
> I re-ran the test with xen/next-2.6.37. The fault was a bit different this 
> time.
> The dom0 started spewing these as the domU appeared to hang:

OK, these look like exactly the sort of symptoms which should be fixed
by that patch, so assuming you're actually running the right kernel
(worth checking!  I get bitten by this occasionally), there's something
else going on here.

What NFS version are you using, and other parameters?  What is the NFS
server?  What's the file access pattern going on?

Thanks,
    J

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel