From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([208.118.235.92]:36705) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Sm2uq-0003z6-Mk for qemu-devel@nongnu.org; Tue, 03 Jul 2012 09:13:21 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Sm2uk-0006Ka-8o for qemu-devel@nongnu.org; Tue, 03 Jul 2012 09:13:16 -0400 Received: from mx1.redhat.com ([209.132.183.28]:35783) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Sm2uk-0006Jy-1U for qemu-devel@nongnu.org; Tue, 03 Jul 2012 09:13:10 -0400 Message-ID: <4FF2EFE0.2090400@redhat.com> Date: Tue, 03 Jul 2012 16:13:04 +0300 From: Avi Kivity MIME-Version: 1.0 References: <4FEB2945.1030607@dlhnet.de> <4FEB3AC6.6010206@web.de> <4FEC1FC9.7050103@dlhnet.de> <4FEC2210.1030005@siemens.com> <4FEC2475.4030202@dlhnet.de> <4FEC2626.90402@dlhnet.de> <4FF1B8A6.2020101@redhat.com> <4FF2ED2A.7080300@dlhnet.de> In-Reply-To: <4FF2ED2A.7080300@dlhnet.de> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] race between kvm-kmod-3.0 and kvm-kmod-3.3 // was: race condition in qemu-kvm-1.0.1 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Peter Lieven Cc: Jan Kiszka , Gleb Natapov , qemu-devel@nongnu.org, kvm@vger.kernel.org On 07/03/2012 04:01 PM, Peter Lieven wrote: > Further output from my testing. > > Working: > Linux 2.6.38 with included kvm module > Linux 3.0.0 with included kvm module > > Not-Working: > Linux 3.2.0 with included kvm module > Linux 2.6.28 with kvm-kmod 3.4 > Linux 3.0.0 with kvm-kmod 3.4 > Linux 3.2.0 with kvm-kmod 3.4 > > I can trigger the race with any of qemu-kvm 0.12.5, 1.0 or 1.0.1. > It might be that the code was introduced somewhere between 3.0.0 > and 3.2.0 in the kvm kernel module and that the flaw is not > in qemu-kvm. > > Any hints? > A bisect could tell us where the problem is. To avoid bisecting all of linux, try git bisect v3.2 v3.0 virt/kvm arch/x86/kvm -- error compiling committee.c: too many arguments to function