Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751894AbdIQX5e (ORCPT ); Sun, 17 Sep 2017 19:57:34 -0400 Received: from bombadil.infradead.org ([65.50.211.133]:49117 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751271AbdIQX5d (ORCPT ); Sun, 17 Sep 2017 19:57:33 -0400 Date: Sun, 17 Sep 2017 16:57:31 -0700 From: Christoph Hellwig To: Laura Abbott Cc: Christoph Hellwig , "Michael S. Tsirkin" , Jason Wang , virtualization@lists.linux-foundation.org, linux-kernel@vger.kernel.org Subject: Re: Regression in virtio block driver with 4.13.2 Message-ID: <20170917235731.GA31789@infradead.org> References: <93e65aef-e93d-6a99-854a-f6147f84e3b1@redhat.com> <20170915173703.GA23073@infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.8.3 (2017-05-23) X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 533 Lines: 11 On Sat, Sep 16, 2017 at 04:16:06PM -0700, Laura Abbott wrote: > Yes, the issue goes away when CONFIG_VIRTIO_BLK_SCSI is > disabled. Ok, so it's probably related to follow ups to the scsi_request split. That being said, I would highly recommend turning off CONFIG_VIRTIO_BLK_SCSI in fedora. The feature has caused more trouble than it helped with, and should never have been added (saying that as the person who added it). It was never supported with virtio 1.0 devices and has been disabled in qemu by default for quite a while.