Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932216AbdDDTDR (ORCPT ); Tue, 4 Apr 2017 15:03:17 -0400 Received: from mx1.redhat.com ([209.132.183.28]:34673 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754468AbdDDTDP (ORCPT ); Tue, 4 Apr 2017 15:03:15 -0400 DMARC-Filter: OpenDMARC Filter v1.3.2 mx1.redhat.com 2A71F61D1A Authentication-Results: ext-mx10.extmail.prod.ext.phx2.redhat.com; dmarc=none (p=none dis=none) header.from=redhat.com Authentication-Results: ext-mx10.extmail.prod.ext.phx2.redhat.com; spf=pass smtp.mailfrom=mst@redhat.com DKIM-Filter: OpenDKIM Filter v2.11.0 mx1.redhat.com 2A71F61D1A Date: Tue, 4 Apr 2017 22:03:11 +0300 From: "Michael S. Tsirkin" To: Mike Galbraith Cc: Christoph Hellwig , Thorsten Leemhuis , virtio-dev@lists.oasis-open.org, Linux Kernel Mailing List , rjones@redhat.com Subject: Re: Random guest crashes since 5c34d002dcc7 ("virtio_pci: use shared interrupts for virtqueues") Message-ID: <20170404213702-mutt-send-email-mst@kernel.org> References: <20170331194416-mutt-send-email-mst@kernel.org> <20170403141823.GA24747@lst.de> <1491242192.5638.111.camel@gmx.de> <20170403210931-mutt-send-email-mst@kernel.org> <1491278572.5198.28.camel@gmx.de> <20170404163725-mutt-send-email-mst@kernel.org> <1491315482.5239.11.camel@gmx.de> <20170404182904-mutt-send-email-mst@kernel.org> <1491327646.4253.2.camel@gmx.de> <1491328476.4253.10.camel@gmx.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1491328476.4253.10.camel@gmx.de> X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.39]); Tue, 04 Apr 2017 19:03:15 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1812 Lines: 56 On Tue, Apr 04, 2017 at 07:54:36PM +0200, Mike Galbraith wrote: > On Tue, 2017-04-04 at 19:40 +0200, Mike Galbraith wrote: > > On Tue, 2017-04-04 at 18:30 +0300, Michael S. Tsirkin wrote: > > > > > I couldn't reproduce it - let's make sure we are using the > > > same tree. Could you pls try > > > > > > git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git linux > > > -next > > > > > > It's currently at cc79d42a7d7e57ff64f406a1fd3740afebac0b44 > > > > Things that make ya go hmm... > > Making double sure we're on the same page... > > git@homer:..git/vhost> git branch > * linux-next > master > git@homer:..git/vhost> git describe > warning: tag 'for_linus' is really 'tags_for_linus' here > for_linus-220128-gcc79d42a7d7e > git@homer:..git/vhost> git status > On branch linux-next > Your branch is up-to-date with 'origin/linux-next'. > Changes not staged for commit: > (use "git add ..." to update what will be committed) > (use "git checkout -- ..." to discard changes in working directory) > > modified: Makefile > modified: scripts/setlocalversion > > no changes added to commit (use "git add" and/or "git commit -a") > git@homer:..git/vhost> > > Modifications are me whacking '+' sign and -rc5.. I don't do those. since I couldn't reproduce, I decided it's worth trying to see what happens if we revert back to before 5c34d002dcc7. Could you please test a tag "test" in my tree above? It should point at 6d88af1bf359417eb821370294ba489bdf7f5ab8 That has reverts for code refactorings since 5c34d002dcc7 inclusive. If this finally works, maybe you could go back and see which of the reverts helps? The idea is that this only has refactorings nicely isolated, if all else fails we can even do the reverts without losing functionality. -- MST