Return-Path: Received: from fieldses.org ([173.255.197.46]:38492 "EHLO fieldses.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S968240AbdEZPIt (ORCPT ); Fri, 26 May 2017 11:08:49 -0400 Date: Fri, 26 May 2017 11:08:39 -0400 From: "bfields@fieldses.org" To: "Michael S. Tsirkin" , hch , Trond Myklebust , "anna.schumaker@netapp.com" , "jlayton@poochiereds.net" , "linux-nfs@vger.kernel.org" Subject: Re: remove function pointer casts and constify function tables Message-ID: <20170526150839.GA4593@fieldses.org> References: <20170512161701.22468-1-hch@lst.de> <1494620040.19467.1.camel@primarydata.com> <20170513072557.GA14602@lst.de> <1494691819.31377.1.camel@primarydata.com> <20170515152134.GC24547@fieldses.org> <20170515154450.GA18630@lst.de> <20170523081159.GA19216@lst.de> <20170523122334.GA4298@fieldses.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: <20170523122334.GA4298@fieldses.org> Sender: linux-nfs-owner@vger.kernel.org List-ID: On Tue, May 23, 2017 at 08:23:34AM -0400, bfields@fieldses.org wrote: > Unfortunately I can't get anything through testing. It's not your > patches, it's something in -rc1. My server VM stops responding to > any network traffic randomly in the middle of a run. If I log in from a > serial console, I see the interface is up and everything looks OK. I > haven't had the chance to do much more, and I'm not sure where to > start.... I started a git-bisect attempt, but there are several > unrelated problems, and I'm not sure this one is 100% reproduceable. It looks like it may be due to something pulled in with virtio updates. I've reproduced the problem on c8b0d7290657 "s390/virtio: change maintainership" but not on v4.11. Are there any known issues with those commits? I've just been doing this long-running bisect while working on other stuff. My reproducer (basically just running a bunch of NFS connectathon tests over a variety of protocol versions and security flavors) doesn't hit the bug reliably, and I've had to restart a couple times probably due to false negatives. But this looks pretty promising, and there's only 17 commits in that range, so I'll keep bisecting. --b.