Received: by 2002:a25:683:0:0:0:0:0 with SMTP id 125csp2219500ybg; Fri, 5 Jun 2020 08:28:14 -0700 (PDT) X-Google-Smtp-Source: ABdhPJz6qzM6pHbFXSnXYivZAy69D+NYPrj/WLasa+6CXbBiKdiz4DCTlJdXBuQPL8CIWPnTgTqB X-Received: by 2002:a17:906:2e50:: with SMTP id r16mr8990674eji.305.1591370894478; Fri, 05 Jun 2020 08:28:14 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1591370894; cv=none; d=google.com; s=arc-20160816; b=OaUDqsCgd9fQBoB+jZrfDR2nKmNl0EooeNudKxw7O5tdUcF9zExtwXTXYFlRa4Z9QU K7GaZbXJFqDBLd3jt5nC/r2gpAEejCqr1XPVbHbh7Sq8HiHKS5tYyt+RtYCh1JcfnSCS IMQczG4lzlDwN9uihAHC599MWh/qxFRk+5AlJ0I8FeIINSz/DLg0+KsaxAEg4LhRyghZ j8gb7unrnSNoRryECkR17HqaGkq84GyAK/95uwrVatGF2d+XGlyh86WQL6tp9+GOWOEk +5Unw16jGKkrfggRw8t896MO1ky3gyeya7vJ75HmOt0Oi8iK+O7XXHZkt7E/8pToRCuC u2lw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding :content-language:in-reply-to:mime-version:user-agent:date :message-id:autocrypt:from:references:cc:to:subject:dkim-signature; bh=oCHMwa7bsAK1+iWBz0pjXDP5aeN0b72eKD/WajzUXwE=; b=aEQPQvlPRdlflZr5idnsK/XsBIo+xu1I1W9P4W5fEVPCaZ9Zpg8lfDuJ29NzNtkkNX Ha7CjYgQdPHxK7hY0hQPsdBC5TiYOpFQsoNCc6X744ggNSZ0V3P+Bf9kk+hGJn11u7MQ KGhO6DvmStkh9gAdh2ai+gHE4Ia6UjoKeGVq4D/4QGoV0jLNXUGKhOSU/gHd8UB8pwCv fg0cDX77n8t/q4Q5+6zO0Kq07kc1jnueFq91qT560/WVmPUoq1gV+T6TZHmKH+XXzaaF bsZOfML5qFrlLGBmovrGwxTGMz7l7Yq6IqtbgNAMuT1vTJUCCH7cPus8bhDRs/SP80AP g3Bg== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@web.de header.s=dbaedf251592 header.b=LAHsA8Al; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id l17si3623842ejg.358.2020.06.05.08.27.50; Fri, 05 Jun 2020 08:28:14 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@web.de header.s=dbaedf251592 header.b=LAHsA8Al; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728080AbgFEPZ6 (ORCPT + 99 others); Fri, 5 Jun 2020 11:25:58 -0400 Received: from mout.web.de ([212.227.15.4]:49115 "EHLO mout.web.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726539AbgFEPZ6 (ORCPT ); Fri, 5 Jun 2020 11:25:58 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=web.de; s=dbaedf251592; t=1591370729; bh=T0/VPTYXlqhfSmrj9VAFxCAw+LSQ/ts2H1JhtSXbBhg=; h=X-UI-Sender-Class:Subject:To:Cc:References:From:Date:In-Reply-To; b=LAHsA8AlHU4xWoDR/zaCG2hhQLMgHEUewqfpF6Rb7sKwxbARkdsnSnYYzQmcpW0Oc VsObCDptM6R3D8k0iZZFD6qVJ71WIWvZArAubfbO13Uq0itW+/+2HM9oyIz8fpiYii eLIXWoUmiQMzm+CF1iGzVL5FXhpB/iyfZrId6RCM= X-UI-Sender-Class: c548c8c5-30a9-4db5-a2e7-cb6cb037b8f9 Received: from [192.168.1.2] ([93.131.102.114]) by smtp.web.de (mrweb002 [213.165.67.108]) with ESMTPSA (Nemesis) id 0M9GcY-1joM1H03wM-00Cl3D; Fri, 05 Jun 2020 17:25:29 +0200 Subject: Re: block: Fix use-after-free in blkdev_get() To: Matthew Wilcox , linux-block@vger.kernel.org, linux-fsdevel@vger.kernel.org Cc: Dan Carpenter , Jason Yan , hulkci@huawei.com, kernel-janitors@vger.kernel.org, linux-kernel@vger.kernel.org, Al Viro , Christoph Hellwig , Jan Kara , Jens Axboe , Ming Lei References: <88676ff2-cb7e-70ec-4421-ecf8318990b1@web.de> <5fa658bf-3028-9b5c-30cc-dbdef6bf8f7a@huawei.com> <20200605094353.GS30374@kadam> <2ee6f2f7-eaec-e748-bead-0ad59f4c378b@web.de> <20200605111039.GL22511@kadam> <63e57552-ab95-7bb4-b4f1-70a307b6381d@web.de> <20200605114208.GC19604@bombadil.infradead.org> <20200605125209.GG19604@bombadil.infradead.org> <366e055b-6a00-662e-2e03-f72053f67ae6@web.de> <20200605151537.GH19604@bombadil.infradead.org> From: Markus Elfring Autocrypt: addr=Markus.Elfring@web.de; prefer-encrypt=mutual; keydata= mQINBFg2+xABEADBJW2hoUoFXVFWTeKbqqif8VjszdMkriilx90WB5c0ddWQX14h6w5bT/A8 +v43YoGpDNyhgA0w9CEhuwfZrE91GocMtjLO67TAc2i2nxMc/FJRDI0OemO4VJ9RwID6ltwt mpVJgXGKkNJ1ey+QOXouzlErVvE2fRh+KXXN1Q7fSmTJlAW9XJYHS3BDHb0uRpymRSX3O+E2 lA87C7R8qAigPDZi6Z7UmwIA83ZMKXQ5stA0lhPyYgQcM7fh7V4ZYhnR0I5/qkUoxKpqaYLp YHBczVP+Zx/zHOM0KQphOMbU7X3c1pmMruoe6ti9uZzqZSLsF+NKXFEPBS665tQr66HJvZvY GMDlntZFAZ6xQvCC1r3MGoxEC1tuEa24vPCC9RZ9wk2sY5Csbva0WwYv3WKRZZBv8eIhGMxs rcpeGShRFyZ/0BYO53wZAPV1pEhGLLxd8eLN/nEWjJE0ejakPC1H/mt5F+yQBJAzz9JzbToU 5jKLu0SugNI18MspJut8AiA1M44CIWrNHXvWsQ+nnBKHDHHYZu7MoXlOmB32ndsfPthR3GSv jN7YD4Ad724H8fhRijmC1+RpuSce7w2JLj5cYj4MlccmNb8YUxsE8brY2WkXQYS8Ivse39MX BE66MQN0r5DQ6oqgoJ4gHIVBUv/ZwgcmUNS5gQkNCFA0dWXznQARAQABtCZNYXJrdXMgRWxm cmluZyA8TWFya3VzLkVsZnJpbmdAd2ViLmRlPokCVAQTAQgAPhYhBHDP0hzibeXjwQ/ITuU9 Figxg9azBQJYNvsQAhsjBQkJZgGABQsJCAcCBhUICQoLAgQWAgMBAh4BAheAAAoJEOU9Figx g9azcyMP/iVihZkZ4VyH3/wlV3nRiXvSreqg+pGPI3c8J6DjP9zvz7QHN35zWM++1yNek7Ar OVXwuKBo18ASlYzZPTFJZwQQdkZSV+atwIzG3US50ZZ4p7VyUuDuQQVVqFlaf6qZOkwHSnk+ CeGxlDz1POSHY17VbJG2CzPuqMfgBtqIU1dODFLpFq4oIAwEOG6fxRa59qbsTLXxyw+PzRaR LIjVOit28raM83Efk07JKow8URb4u1n7k9RGAcnsM5/WMLRbDYjWTx0lJ2WO9zYwPgRykhn2 sOyJVXk9xVESGTwEPbTtfHM+4x0n0gC6GzfTMvwvZ9G6xoM0S4/+lgbaaa9t5tT/PrsvJiob kfqDrPbmSwr2G5mHnSM9M7B+w8odjmQFOwAjfcxoVIHxC4Cl/GAAKsX3KNKTspCHR0Yag78w i8duH/eEd4tB8twcqCi3aCgWoIrhjNS0myusmuA89kAWFFW5z26qNCOefovCx8drdMXQfMYv g5lRk821ZCNBosfRUvcMXoY6lTwHLIDrEfkJQtjxfdTlWQdwr0mM5ye7vd83AManSQwutgpI q+wE8CNY2VN9xAlE7OhcmWXlnAw3MJLW863SXdGlnkA3N+U4BoKQSIToGuXARQ14IMNvfeKX NphLPpUUnUNdfxAHu/S3tPTc/E/oePbHo794dnEm57LuuQINBFg2+xABEADZg/T+4o5qj4cw nd0G5pFy7ACxk28mSrLuva9tyzqPgRZ2bdPiwNXJUvBg1es2u81urekeUvGvnERB/TKekp25 4wU3I2lEhIXj5NVdLc6eU5czZQs4YEZbu1U5iqhhZmKhlLrhLlZv2whLOXRlLwi4jAzXIZAu 76mT813jbczl2dwxFxcT8XRzk9+dwzNTdOg75683uinMgskiiul+dzd6sumdOhRZR7YBT+xC wzfykOgBKnzfFscMwKR0iuHNB+VdEnZw80XGZi4N1ku81DHxmo2HG3icg7CwO1ih2jx8ik0r riIyMhJrTXgR1hF6kQnX7p2mXe6K0s8tQFK0ZZmYpZuGYYsV05OvU8yqrRVL/GYvy4Xgplm3 DuMuC7/A9/BfmxZVEPAS1gW6QQ8vSO4zf60zREKoSNYeiv+tURM2KOEj8tCMZN3k3sNASfoG fMvTvOjT0yzMbJsI1jwLwy5uA2JVdSLoWzBD8awZ2X/eCU9YDZeGuWmxzIHvkuMj8FfX8cK/ 2m437UA877eqmcgiEy/3B7XeHUipOL83gjfq4ETzVmxVswkVvZvR6j2blQVr+MhCZPq83Ota xNB7QptPxJuNRZ49gtT6uQkyGI+2daXqkj/Mot5tKxNKtM1Vbr/3b+AEMA7qLz7QjhgGJcie qp4b0gELjY1Oe9dBAXMiDwARAQABiQI8BBgBCAAmFiEEcM/SHOJt5ePBD8hO5T0WKDGD1rMF Alg2+xACGwwFCQlmAYAACgkQ5T0WKDGD1rOYSw/+P6fYSZjTJDAl9XNfXRjRRyJSfaw6N1pA Ahuu0MIa3djFRuFCrAHUaaFZf5V2iW5xhGnrhDwE1Ksf7tlstSne/G0a+Ef7vhUyeTn6U/0m +/BrsCsBUXhqeNuraGUtaleatQijXfuemUwgB+mE3B0SobE601XLo6MYIhPh8MG32MKO5kOY hB5jzyor7WoN3ETVNQoGgMzPVWIRElwpcXr+yGoTLAOpG7nkAUBBj9n9TPpSdt/npfok9ZfL /Q+ranrxb2Cy4tvOPxeVfR58XveX85ICrW9VHPVq9sJf/a24bMm6+qEg1V/G7u/AM3fM8U2m tdrTqOrfxklZ7beppGKzC1/WLrcr072vrdiN0icyOHQlfWmaPv0pUnW3AwtiMYngT96BevfA qlwaymjPTvH+cTXScnbydfOQW8220JQwykUe+sHRZfAF5TS2YCkQvsyf7vIpSqo/ttDk4+xc Z/wsLiWTgKlih2QYULvW61XU+mWsK8+ZlYUrRMpkauN4CJ5yTpvp+Orcz5KixHQmc5tbkLWf x0n1QFc1xxJhbzN+r9djSGGN/5IBDfUqSANC8cWzHpWaHmSuU3JSAMB/N+yQjIad2ztTckZY pwT6oxng29LzZspTYUEzMz3wK2jQHw+U66qBFk8whA7B2uAU1QdGyPgahLYSOa4XAEGb6wbI FEE= Message-ID: Date: Fri, 5 Jun 2020 17:25:27 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.8.1 MIME-Version: 1.0 In-Reply-To: <20200605151537.GH19604@bombadil.infradead.org> Content-Type: text/plain; charset=utf-8 Content-Language: en-GB Content-Transfer-Encoding: quoted-printable X-Provags-ID: V03:K1:Eg14ewh6Vb8ouXqGBjZ4ZjoYR32d+E4JC6W6cYSHlwaPiISp0UE mK5rKF/L2t+McONDFSqgVGJj0ZKmP+fp9JEClEXq2D8rqkciT+73NR1rI3huGmnysOGoq64 TGD/k2mL+DxBNfqi8R8Tr+zTPmuKgbTP8G8pUt/MI3dlLyauC8aHVaKglD1XzuMdV7qHiRr 8W4dMqM41F/gXJCpVYYaQ== X-Spam-Flag: NO X-UI-Out-Filterresults: notjunk:1;V03:K0:HvNglLEILxY=:MCNabvEo+xo3+lwMPmnv/G +WKcPzN9d2OfGQsy5xJwwJGmxFCHa4PqggutLhuNEzVtzYZkVGa761DyLFj/wnume0/prrCjP 2W3J9mr41pR0R6F9Jc5MMQDnC9G8yxkDB4BGBaUxHTNhZQPpx3mKifQSVgjKoDggInLZ9KvRs jMZ4ZhGhYRKVT0GuuuO1WJoRJZQmLnGYp3UNA4qqa5sr6d4DPWVc7XFg811Os/GxWoKOB9vXJ bicfiqhCyMSaJ4xZynr520EO2PXVgxMywJVB7y0yolWtP7oNtcyEwAJbmwLK4Z8kcAGu/gbeI CPI/qyQs26Emg6ppBHbvwkXi8n170LcBuFJhex1hlrwLbzaaRbqm5WxtiRPH7+pLbV0p5GhuH 6oEJko07DDFjhy6+NxcNQpvYdjeP/ocjtY2oycnqY0mWP90B75VW/TsbTHdiQKVj6wBRQcNMW KpEU7FZX6BvzTW1TRzBX4R3d1RbMjLBhnkMixL9RNdPYrxjJiNQkvncSjpd7Cre/bo7s//b2w 6osXkoQ7aTPzbNtlafL7dKbiVAZu7/+WurNWa/tEGsMk27CYYAcg4CQvu50oEOTwYV5zLCsGM +KD2i3bVCWqPQTXnCdy7qQKpRnBN16J4h1maWrCq8rjrW3gwrEQNlpnUDh412r6BaXLA6Qwzt wSqzFIu2AKMebx+Jir/ZwRug1ez9E0BR2loIu15gQEJYy3GW9KhG6kzaqIkOHIQ+x708EsixK EIKKsdB6rjXZM25GpstalAd0ShJmNa3l/PxuZnzbF+J3nFY98M95tMwOSdPZ2NMCw4nuVl9ip 1tWtnjSlIfLPbSS+m9B//4rKEyAOmMle5NO6u3hwVXoUXkV9lF93yKdBbzV7pCRiITAMlgHHX NfufWsN7gXNov9C0LPXPJxIj5SmD4bBBX6Wh1suNPzrRK4s3KUvRYdG+JYx3o7RtpoayMW3t7 P0MZSkB2psdqZjdrzyn027Lxthstw6y+KcolGlEq6ifL6zf8PyB9UDBXOxtVW/uIRgT5Y5SW1 xlzDjhV+tKmp8gzgEQA/cq5cVMJbo/P8eb0tgATwUimwTe6WtiKS0WxIR0Q+Hnr6GylihhWRe JFOQBIzeFSyuh+w8awtWoAoNvgIevF1isfgVRHJUp3fCi1PZbL9qSdoWX6uuirpRWnVNWF+F6 p8enaKrH6S3NSsrb6Dibaa8t6Y17ar2wei6zdTOzLiFPVP8r+PgqrNoBj07/Jq9rps8BMxHlI N4Cq7JUEgFUm94wBU Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org >> Do you find proposed spelling corrections useful? > > To commit messages? No. Are you really going to tolerate wording weaknesses there? https://lore.kernel.org/linux-block/20200605104558.16686-1-yanaijie@huawei= .com/ https://lore.kernel.org/patchwork/patch/1252648/ > You do not seem to progress, and making spelling corrections to > changelog messages is a level of nitpicking that just isn't helpful. I got obviously an other software development understanding (also in this area). Regards, Markus