From mboxrd@z Thu Jan 1 00:00:00 1970 From: Haitao Shan Subject: Re: Re: system freeze when processor.ko is loaded during boot Date: Thu, 31 Mar 2011 14:23:24 +0800 Message-ID: References: <4CAF794F.6070308@arcor.de> <4CBEAEE2020000780001E237@vpn.id2.novell.com> <4D910C24.5090908@arcor.de> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============1293483016==" Return-path: In-Reply-To: <4D910C24.5090908@arcor.de> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: Martin Wilck Cc: "Liu, Jinsong" , "xen-devel@lists.xensource.com" , "Jiang, Yunhong" , Jan Beulich , "Dugger, Donald D" , "Li, Xin" , "Wei, Gang" List-Id: xen-devel@lists.xenproject.org --===============1293483016== Content-Type: multipart/alternative; boundary=20cf303f6c52ac869c049fc154e0 --20cf303f6c52ac869c049fc154e0 Content-Type: text/plain; charset=ISO-8859-1 Hi, Martin, I have checked your dump info via debug key. I saw that the EIPs remained the same between two successive dump. However, without the symbols I could not identify which code kernel was hanging on. Is it possible that you can find this information by disassembling the kernel binaries (with symbols). Or could you please repeat your test using an upstreaming Xen and kernel so that I could compile a same kernel just as you would be using? And I see you CPU is a very old model, UP without 64 bit support and no PAE? Right? Shan Haitao 2011/3/29 Martin Wilck > Hi Liu, > > > Any update? I need reproduce the bug so your environment/config is really > needed. > > I think I have some news, finally. I got a docking station and a serial > cable and was finally able to capture some more debug output. You were > right, the hypervisor seems top be still alive (but timers seen to be > stalled). When the problem occurs, I see > > (XEN) Platform timer appears to have unexpectedly wrapped 10 or more times. > > This has been reported elsewhere, but I haven't seen anyone reporting a > total freeze in this case, like me. > > I am attaching a serial capure. When the problem occured, I switched the > serial port to the hypervisor and ran some diagnostics. Hints > appreciated. This was done with the hypervisor and kernel of OpenSUSE 11.4. > > xen-4.0.2_02-4.7.1.i586 > kernel-xen-2.6.37.1-1.2.2.i586 > > > BTW, have you tried at some other platform beside Samsung XS50 laptop? is > it a machine specific issue? > > I haven't seen it on any other machine. But I don't have a > representative set of machines, either. > > Regards > Martin > > _______________________________________________ > Xen-devel mailing list > Xen-devel@lists.xensource.com > http://lists.xensource.com/xen-devel > > --20cf303f6c52ac869c049fc154e0 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable
Hi, Martin,
=A0
I have checked your dump info via = debug key. I saw that the EIPs remained the same between two successive dum= p. However, without the symbols I could not identify which code kernel was = hanging on. Is it possible that you can find this information by disassembl= ing the kernel binaries (with symbols). Or could you please repeat your tes= t using an upstreaming Xen and kernel so that I could compile a same kernel= just as you would be using?
=A0
And I see you CPU is a very old model, UP without 64 bit= support and no PAE? Right?
=A0
Shan Haitao

2011/3/29 Martin Wilck <<= a href=3D"mailto:mwilck@arcor.de">mwilck@arcor.de>
Hi Liu,

> Any update? I need reproduce the bug so your environment/config is rea= lly needed.

I think I have some news, finally. I got a docking station and a seri= al
cable and was finally able to capture some more debug output. You were
right, the hypervisor seems top be still alive (but timers seen to be
stalled). When the problem occurs, I see

(XEN) Platform timer appears to have unexpectedly wrapped 10 or more times.=

This has been reported elsewhere, but I haven't seen anyone reporting a=
total freeze in this case, like me.

I am attaching a serial capure. When the problem occured, I switched the serial port to the hypervisor and ran some diagnostics. Hints
appreciated. This was done with the hypervisor and kernel of OpenSUSE 11.4.=

xen-4.0.2_02-4.7.1.i586
kernel-xen-2.6.37.1-1.2.2.i586

> BTW, have you tried at some other platform beside Samsung XS50 laptop?= is it a machine specific issue?

I haven't seen it on any other machine. But I don't have a representative set of machines, either.

Regards
Martin

_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xensource.= com
http://l= ists.xensource.com/xen-devel


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