From mboxrd@z Thu Jan 1 00:00:00 1970 From: Avi Kivity Subject: Re: kernel bug in kvm_intel Date: Sun, 29 Nov 2009 16:46:50 +0200 Message-ID: <4B12895A.2010706@redhat.com> 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; format=flowed Content-Transfer-Encoding: 7bit Cc: Tejun Heo , kvm@vger.kernel.org, Linux-kernel@vger.kernel.org To: Andrew Theurer Return-path: Received: from mx1.redhat.com ([209.132.183.28]:29346 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752425AbZK2Ord (ORCPT ); Sun, 29 Nov 2009 09:47:33 -0500 In-Reply-To: <4B0DDB5D.9030202@linux.vnet.ibm.com> Sender: kvm-owner@vger.kernel.org List-ID: On 11/26/2009 03:35 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. I just posted a patch fixing this, titled "[PATCH tip:x86/entry] core: fix user return notifier on fork()". -- error compiling committee.c: too many arguments to function