From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752914AbbALJa2 (ORCPT ); Mon, 12 Jan 2015 04:30:28 -0500 Received: from mail-we0-f173.google.com ([74.125.82.173]:39764 "EHLO mail-we0-f173.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752331AbbALJaW (ORCPT ); Mon, 12 Jan 2015 04:30:22 -0500 Message-ID: <54B3942D.2080006@profitbricks.com> Date: Mon, 12 Jan 2015 10:30:21 +0100 From: Sebastian Parschauer User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.3.0 MIME-Version: 1.0 To: Fam Zheng CC: Jens Axboe , Eduardo Otubo , "linux-kernel@vger.kernel.org" , virtualization@lists.linux-foundation.org Subject: Re: blk-mq v3.18: Oops during virtio_blk hot-unplug References: <54AFE664.6010002@profitbricks.com> <20150110012036.GC8570@fam-t430.nay.redhat.com> In-Reply-To: <20150110012036.GC8570@fam-t430.nay.redhat.com> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 10.01.2015 02:20, Fam Zheng wrote: > On Fri, 01/09 15:32, Sebastian Parschauer wrote: >> Hi Jens, >> >> my colleague Eduardo is sporadically seeing an Oops in blk-mq while >> running continuous virtio_blk hot-plug/hot-unplug tests with I/O to the >> device within an x86_64 QEMU/KVM 2.0 Debian Wheezy VM. >> >> Please find the call trace attached and the full log here: >> http://paste.ubuntu.com/9691873/ >> >> The kernel image has been taken from here and is the mainline kernel >> from tag v3.18: >> http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.18-vivid/ >> >> Is there still an issue with block queue freezing? > > This one? > > commit 45a9c9d909b24c6ad0e28a7946e7486e73010319 > Author: Bart Van Assche > Date: Tue Dec 9 16:57:48 2014 +0100 > > blk-mq: Fix a use-after-free > > Fam Yes, pretty much looks like it, thanks! Cheers, Sebastian