From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andre Przywara Subject: Re: Xen unstable crash on grant table debug output Date: Tue, 9 Mar 2010 15:39:40 +0100 Message-ID: <4B965DAC.8040109@amd.com> References: <4B962981.10408@amd.com> Mime-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1"; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <4B962981.10408@amd.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: Keir Fraser Cc: "Seidel, Conny" , xen-devel List-Id: xen-devel@lists.xenproject.org Keir Fraser wrote: > changeset 21017: 83a8e561f3ff > Fix grant table debug key. > > Must skip domains with gt_version==0. > Signed-off-by: Keir Fraser Thanks Keir, that fixes the issue for me. Regards, Andre. > Andre Przywara wrote: > > we see a crash of recent Xen unstable on various machines while dumping > > the "grant table usage" debug information ("# xm debug g" or 3*Ctrl+A g) > > (XEN) **************************************** > > (XEN) Panic on CPU 7: > > (XEN) Assertion 'gt->gt_version != 0' failed at grant_table.c:216 > > (XEN) **************************************** > > (XEN) ... > > (XEN) Manual reset required ('noreboot' specified) > > > > To reproduce: > > * start Xen unstable HV (tried 2.6.18 Dom0) > > * start a guest (we only tried HVM guests), letting them idle in grub > > suffices > > * # xm debug g > > > > > > I haven't had time to investigate this (and am not very familiar with > > that part of the code), so any help is appreciated. -- Andre Przywara AMD-Operating System Research Center (OSRC), Dresden, Germany Tel: +49 351 448 3567 12 ----to satisfy European Law for business letters: Advanced Micro Devices GmbH Karl-Hammerschmidt-Str. 34, 85609 Dornach b. Muenchen Geschaeftsfuehrer: Andrew Bowd; Thomas M. McCoy; Giuliano Meroni Sitz: Dornach, Gemeinde Aschheim, Landkreis Muenchen Registergericht Muenchen, HRB Nr. 43632