From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tejun Heo Subject: Re: kernel bug in kvm_intel Date: Thu, 26 Nov 2009 10:41:48 +0900 Message-ID: <4B0DDCDC.30305@kernel.org> References: <4ACF9745.3050902@linux.vnet.ibm.com> <4AD16ACE.6040903@redhat.com> <1255372957.4883.49.camel@twinturbo.austin.ibm.com> <4AD4231F.6040608@redhat.com> <1255442640.4883.56.camel@twinturbo.austin.ibm.com> <4AD6061D.5070306@redhat.com> <1255637909.4883.129.camel@twinturbo.austin.ibm.com> <1256926052.4883.203.camel@twinturbo.austin.ibm.com> <4AEC5C24.9080506@redhat.com> <4AEC64FC.7070908@linux.vnet.ibm.com> <4AEC6699.6000202@redhat.com> <4AEC6821.7010801@redhat.com> <4AED5C3F.9050506@kernel.org> <4AED6100.6040804@redhat.com> <4AED66D0.20704@kernel.org> <4AED7178.2060906@redhat.com> <4B03BDCC.4080502@kernel.org> <4B0DDB5D.9030202@linux.vnet.ibm.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Cc: Avi Kivity , kvm@vger.kernel.org, Linux-kernel@vger.kernel.org To: Andrew Theurer Return-path: Received: from hera.kernel.org ([140.211.167.34]:34952 "EHLO hera.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750816AbZKZBmD (ORCPT ); Wed, 25 Nov 2009 20:42:03 -0500 In-Reply-To: <4B0DDB5D.9030202@linux.vnet.ibm.com> Sender: kvm-owner@vger.kernel.org List-ID: Hello, 11/26/2009 10:35 AM, Andrew Theurer wrote: > I just tried testing tip of kvm.git, but unfortunately I think I might > be hitting a different problem, where processes run 100% in kernel mode. > In my case, cpus 9 and 13 were stuck, running qemu processes. A stack > backtrace for both cpus are below. FWIW, kernel.org 2.6.32-rc7 does not > have this problem, or the original problem. 2.6.32-rc7 doesn't have problem with kvm + oprofile? If the original analysis was right, I can't think of anything which could have changed that between the merge commit and 2.6.32-rc7. Thanks. -- tejun