From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752984AbdKWOCL (ORCPT ); Thu, 23 Nov 2017 09:02:11 -0500 Received: from verein.lst.de ([213.95.11.211]:50914 "EHLO newverein.lst.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752250AbdKWOCJ (ORCPT ); Thu, 23 Nov 2017 09:02:09 -0500 Date: Thu, 23 Nov 2017 15:02:08 +0100 From: Christoph Hellwig To: Christian Borntraeger Cc: Jens Axboe , Bart Van Assche , "virtualization@lists.linux-foundation.org" , "linux-block@vger.kernel.org" , "mst@redhat.com" , "jasowang@redhat.com" , "linux-kernel@vger.kernel.org" , Christoph Hellwig Subject: Re: 4.14: WARNING: CPU: 4 PID: 2895 at block/blk-mq.c:1144 with virtio-blk (also 4.12 stable) Message-ID: <20171123140208.GA28914@lst.de> References: <04526c98-ffc5-1eca-3aa8-50f9212c4323@de.ibm.com> <5c9f2228-0a8b-8225-7038-e6cb3f31ca0b@kernel.dk> <2e44dbd3-2f90-c267-560c-91d1d4b0e892@de.ibm.com> <823b9dd5-7781-5a72-03ff-bc931433fc19@kernel.dk> <15f232d2-2aaa-df7c-57e8-2f710e051e84@de.ibm.com> <055f040d-3f9a-a8fd-e8e2-326c6b9094a1@kernel.dk> <1aeecf2e-a68e-4c18-5912-2473f457e6ea@de.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1aeecf2e-a68e-4c18-5912-2473f457e6ea@de.ibm.com> User-Agent: Mutt/1.5.17 (2007-11-01) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org I can't reproduce it in my VM with adding a new CPU. Do you have any interesting blk-mq like actually using multiple queues? I'll give that a spin next.