From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=3.0 tests=DKIMWL_WL_MED,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 970F8C10F06 for ; Thu, 14 Mar 2019 23:43:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 61B3E2087C for ; Thu, 14 Mar 2019 23:43:31 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=kernel-dk.20150623.gappssmtp.com header.i=@kernel-dk.20150623.gappssmtp.com header.b="UN/J5P94" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728100AbfCNXn3 (ORCPT ); Thu, 14 Mar 2019 19:43:29 -0400 Received: from mail-pf1-f177.google.com ([209.85.210.177]:46448 "EHLO mail-pf1-f177.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727184AbfCNXn3 (ORCPT ); Thu, 14 Mar 2019 19:43:29 -0400 Received: by mail-pf1-f177.google.com with SMTP id s23so4903811pfe.13 for ; Thu, 14 Mar 2019 16:43:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel-dk.20150623.gappssmtp.com; s=20150623; h=subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=nIC83MkNNWtD+yghVyMZZOh3+WVU1WtBYDwPrahmWQc=; b=UN/J5P94rJYL64qMojBByaatGIbMy5P0pJIgDrsjxMRJQqcr4bQ4IAt+i+xQyAbe78 VRMKZ5Q78V8rty2U22huxlDxR7T9MYdJLGFYu/W5wH6aFvb37U9r6zaEkrJlDcg2dxzN MpHJ9qaQ+LsF/gAFieOK2LdQ6H+mU79fRg1BvjtZ6EP1XaMV0LDertFkUqO3NacKOfh5 AqLIXjsTmxMFQROdeEJXF6gPuXhBv9ci3/kobntL/w7nwz3eG4W8BaWIgRg3ZQGfUfcV O3/m8Ln0t7kNdA4c74WGtXMw+juGDLy3PFJuZNAV//RoQSEt/lT23y+fYnqC0SRZJsU8 gEQQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=nIC83MkNNWtD+yghVyMZZOh3+WVU1WtBYDwPrahmWQc=; b=qf/4r5a3Pb+ZobkzG3/nmyAuAnP9M/DdXWWQpCvpSIiCb2qNXJOXBAQLsVklGuc1uS gyZdR/ZbmaxYMvOyu/9xmQWIyygh60+yN+sShCoibMm+MnaXbaj0Q7SyjLw/Huyz0nEQ J7Z2kYGuBb0w6NRnOkUu9ovbQqlICUERRoNMwi6QTxV+jmiNU4kP/tZwrlEUzAgJ5zsk IDu7ikWI/SCsyBr0Y7uims7x9GWUr8p4CZMwSIMw1BMlg7G/r4ButdSE+Zpg9JviFkM1 7JgH5hz3WaGESLpKllvFkr+/xE62GhyeBshLNQPLBWAEUPAVCDawwLtPE1a3zBMDJbkQ HkyQ== X-Gm-Message-State: APjAAAW5aJ3s/uq9Yc3lCN6NweAVom6Di/CZWsXrTP/fBlTrH0+hnCbn hH3OynhEDkfNNXwpYcMYYZb3OQ/IxikyzQ== X-Google-Smtp-Source: APXvYqwKkgIOmg/D28qaZrTVrMOtVC2oJFXGukQ5XnTC2ekOmHwMnlkEdg1Q//8kPWzvwc/AWFSXpg== X-Received: by 2002:a63:6a48:: with SMTP id f69mr466207pgc.7.1552607008767; Thu, 14 Mar 2019 16:43:28 -0700 (PDT) Received: from [192.168.1.121] (66.29.188.166.static.utbb.net. [66.29.188.166]) by smtp.gmail.com with ESMTPSA id n75sm289187pfb.39.2019.03.14.16.43.27 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 14 Mar 2019 16:43:27 -0700 (PDT) Subject: Re: paride/pf.c: blk-mq use-after-free (kernel v5.0) To: Randy Dunlap , linux-block Cc: LKML , Tim Waugh , linux-parport@lists.infradead.org References: <30c63b2d-92d2-51be-40f0-62cada110388@infradead.org> <7d24a06f-f219-e50a-e8f8-915a6cc1b796@infradead.org> From: Jens Axboe Message-ID: <59cb035e-6880-de5a-33c5-d4db6ed910f4@kernel.dk> Date: Thu, 14 Mar 2019 17:43:26 -0600 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.5.1 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 3/13/19 5:09 PM, Randy Dunlap wrote: > On 3/11/19 6:34 PM, Randy Dunlap wrote: >> On 3/11/19 6:25 PM, Randy Dunlap wrote: >>> [Has this already been addressed/fixed?]>> >> >> Same bug occurs with paride/pcd.c driver. > > This still happens (in blk-mq) in v5.0-11053-gebc551f2b8f9 of Mar. 12, 2019, > around 4pm PT. [caused by paride: pf.c and pcd.c) I'll take a look at this, been busy with other stuff. How are you reproducing this? I'm assuming you don't actually have any hardware :-) -- Jens Axboe