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=-2.2 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 autolearn=no 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 5E858C432C0 for ; Tue, 3 Dec 2019 16:00:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 238302073F for ; Tue, 3 Dec 2019 16:00:08 +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="BhNal5JQ" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726115AbfLCQAH (ORCPT ); Tue, 3 Dec 2019 11:00:07 -0500 Received: from mail-il1-f193.google.com ([209.85.166.193]:34632 "EHLO mail-il1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726098AbfLCQAH (ORCPT ); Tue, 3 Dec 2019 11:00:07 -0500 Received: by mail-il1-f193.google.com with SMTP id w13so3642756ilo.1 for ; Tue, 03 Dec 2019 08:00:07 -0800 (PST) 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=Qj4dwG0j75epA6rpfajGwC6yH5WSVCEU+/OXjuRPxzU=; b=BhNal5JQ/feh6ZAsTcz6WHAIs9kn/lV99yA66qPjWjtAygLv7rJI4BZRLvgZ1XnvHy j8GrYVxahxrfzEhfwd/bxAQs7+AiXsAphj/2qDpxcQwJLF+j6L07C7KSGIPyOkrzuPKn qDq52WrD5eQJtHm9OjX5wMJ4YSyk/UtZYhYlhzFAzAhabkYLZKMoLpWctEKUQ2dxLvAN TpuB97CPDXVhQ9prty1PNTADjFdtIWkRYNatnpwdv6fY2a7MImUBgdxS4xSbC/QBTvvQ vOlPqlz3QgcZfhT2g2XD+Wg85cgDLrW2j1X5iweA0gCfdepAnSqr0NMQi+WC5lMQ3Rts NPAA== 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=Qj4dwG0j75epA6rpfajGwC6yH5WSVCEU+/OXjuRPxzU=; b=DIAU8PnDoflfCqOCy6zfsjky+ankbihOo0tMptN8nFqotzVbYW91pjJ/1RH7yXaVnp +12n8Ow4GQ+V4WzBfkk+qJq3t9F/zwuo4hgHoPpb5S7y/qYpQj/f5RHg9Bo+tgHb+M6H sfEoHL1y/xu+j4rcaKoMRoLQVB2BdJLBQb0dPmmwWVzPwGwzoWhWwKXEvDutpb2muiio hNELHsspqQtr6ZQ+3EFvfo+Ku5lx8AEZLXLMhsB83CaHAxhUupBhYv/W/JHMuhArjPXY kI0X6/gz/ZsFJ83MaS9AFz8GICymrSGEJ3MhfD73gqSxFnRR/AQkqRStYCH76zV4B+sB bXdw== X-Gm-Message-State: APjAAAUQ5gUSSxszgcPHVvqECzUOOsPFsruqGh6zyMDTlSFvgpibjE+f 8uHUDaqdUWX1cEktTuRK/sI01ckn4bCaBA== X-Google-Smtp-Source: APXvYqzEzs4hl/6RqYhaEp9raiRBSvz8hIdSennCYvLGyfhyoBB1ElE84Z8LoygR26adzY8/p9kZ5w== X-Received: by 2002:a92:4647:: with SMTP id t68mr5114283ila.18.1575388806095; Tue, 03 Dec 2019 08:00:06 -0800 (PST) Received: from [192.168.1.159] ([65.144.74.34]) by smtp.gmail.com with ESMTPSA id s64sm601382ili.56.2019.12.03.08.00.04 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 03 Dec 2019 08:00:05 -0800 (PST) Subject: Re: avoid out of bounds zone bitmap access To: Christoph Hellwig Cc: Damien Le Moal , Hans Holmberg , linux-block@vger.kernel.org References: <20191203093908.24612-1-hch@lst.de> From: Jens Axboe Message-ID: <232deb18-4aa5-79da-3755-dcdf7e281936@kernel.dk> Date: Tue, 3 Dec 2019 09:00:03 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.2.1 MIME-Version: 1.0 In-Reply-To: <20191203093908.24612-1-hch@lst.de> Content-Type: text/plain; charset=utf-8; format=flowed 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 12/3/19 2:39 AM, Christoph Hellwig wrote: > Hi Jens, > > this series (against your for-linus branch) fixes a problem where updates > to the zone information in the queue is not atomic, leading to a possible > out of bounds access. Please take a look and let me know if you think > if this is ok for 5.5. I think we should sneak this into 5.5, I have applied it. -- Jens Axboe