From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:51108) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WuhaZ-0007t4-5U for qemu-devel@nongnu.org; Wed, 11 Jun 2014 08:25:18 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1WuhaR-0004BW-Na for qemu-devel@nongnu.org; Wed, 11 Jun 2014 08:25:11 -0400 Received: from mx1.redhat.com ([209.132.183.28]:6771) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WuhaR-00049t-A0 for qemu-devel@nongnu.org; Wed, 11 Jun 2014 08:25:03 -0400 Message-ID: <53984A98.3010505@redhat.com> Date: Wed, 11 Jun 2014 14:24:56 +0200 From: Paolo Bonzini MIME-Version: 1.0 References: <20140605161803.GB11292@redhat.com> <53918F6E.1020406@redhat.com> <20140608104626.GA26245@redhat.com> <539475F8.3060200@redhat.com> <53984595.3070602@suse.de> In-Reply-To: <53984595.3070602@suse.de> Content-Type: text/plain; charset=ISO-8859-15; format=flowed Content-Transfer-Encoding: quoted-printable Subject: Re: [Qemu-devel] Use-after-free during unrealize in system_reset List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: =?ISO-8859-15?Q?Andreas_F=E4rber?= , Bandan Das Cc: Stefan Hajnoczi , "Michael S. Tsirkin" , qemu-devel , peter.maydell@linaro.org Il 11/06/2014 14:03, Andreas F=E4rber ha scritto: > Still, isn't this an indication that devices relied on the PCI bus bug > of not unrealizing its state all the time and we may need to go back as > far as ~1.7 (the initial finalize based fix) for resolving it? No, I don't think so. The devices rely on being unrealized at a time=20 when the PCI bus is still valid, but that's it. It's just an ordering=20 problem introduced by 2.0. I will repost the patch as toplevel, split and with Cc to qemu-stable. Paolo