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=ham 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 A3DDCC43381 for ; Thu, 14 Mar 2019 23:43:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6EA37218A1 for ; Thu, 14 Mar 2019 23:43:30 +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 S1727248AbfCNXn3 (ORCPT ); Thu, 14 Mar 2019 19:43:29 -0400 Received: from mail-pf1-f173.google.com ([209.85.210.173]:36272 "EHLO mail-pf1-f173.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727132AbfCNXn3 (ORCPT ); Thu, 14 Mar 2019 19:43:29 -0400 Received: by mail-pf1-f173.google.com with SMTP id n22so4935912pfa.3 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=bCY+OedHkE32knuPeiM5ARJEsaXnZbaD+8cJpWLYEWz7eVh2oG8wf793GiDeGh+gKz 8nO3GViDrV8qFAQO41ne+OsvnfuZHX893UEMl8ZplXtuZyoOxC5k2fqyHZO7P8/Fc8nO Z/ixfpxNeQdDqC04Mwkr+5FmkcyhITQMaux5+/DPwAbZFoaUZ6DnAfUY61N+5fmgywG8 Eh0OwpZSlbvAyMp+T3mw2FXqf4fL4ckThBW6Wok3OaL8vNM9btwJWbUg57i0AqqOij2x WDB1UV7qxrZJd8TF89SbACVJWXy4G12tUjxdLQBQvkOOhT4f2odc9IzNelCVjgT0DQ2d dLdQ== X-Gm-Message-State: APjAAAX/O4IbD11zL48Eeu7THlOyUpFAsTfqqOX+bcY/1iPlkDn0V8mY dH2Eim7rPppRs9iN+YPQyDCg0Q== 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-block-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-block@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