From mboxrd@z Thu Jan 1 00:00:00 1970 From: Avi Kivity Subject: Re: segfault in ide_read_dma_cb when resetting guest Date: Mon, 16 Mar 2009 15:15:59 +0200 Message-ID: <49BE510F.4000409@redhat.com> References: <49BD5C3D.4070103@web.de> <49BE341C.9060900@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-15; format=flowed Content-Transfer-Encoding: 7bit Cc: kvm-devel , qemu-devel To: Jan Kiszka Return-path: Received: from mx2.redhat.com ([66.187.237.31]:45317 "EHLO mx2.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751800AbZCPNQD (ORCPT ); Mon, 16 Mar 2009 09:16:03 -0400 In-Reply-To: <49BE341C.9060900@redhat.com> Sender: kvm-owner@vger.kernel.org List-ID: Avi Kivity wrote: > Jan Kiszka wrote: >> Hi, >> >> maybe someone has an immediate idea or can reproduce, I'm currently >> lacking time to debug this: With latest kvm-userspace I'm seeing >> sporadic qemu crashes when hard-resetting a guest that currently does >> some I/O (qcow2 disk in snapshot mode). Below is the backtrace, s is >> null. >> >> So far the issue does not show up with -no-kvm or with upstream qemu >> (also without kvm as upstream's reset in kvm mode is not working yet). >> >> > > I think I broke it -- cancellation assumes aiocbs were generated by > the block format driver, but there are now aiocbs that are generated > by the generic code. > > The problem is in upstream as well, don't know why you don't see it > there (maybe you're seeing a different problem). > > I'll come up with a patch. > Patchset just posted to qemu-devel. -- error compiling committee.c: too many arguments to function