Received: by 2002:a25:1985:0:0:0:0:0 with SMTP id 127csp382242ybz; Wed, 29 Apr 2020 01:51:55 -0700 (PDT) X-Google-Smtp-Source: APiQypIO6biiV6298tCm666oQ66B+T+M8VpzOh12+bO1aWNNbbVx9ILXFTlLc8fMw5c79dr53r42 X-Received: by 2002:a50:b412:: with SMTP id b18mr1424798edh.42.1588150314743; Wed, 29 Apr 2020 01:51:54 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1588150314; cv=none; d=google.com; s=arc-20160816; b=Ud4KecpBvaqIQpsgM/rUY6pg8JSiiSJmmIJ23WtK6x0i7YrcMfVrvOS/4OFS+NDhy/ LX1/Tj2L7NE950nX8Z1wNQ7xKA7mLqFYiyNnvDc9DIaNd05fRRLKbEugBV5zRE41AQIT Lf4sZMnv56uHeTDg6e7cAGlAvJE6N3+6soNLCBHt1mYHDBmm9si4HPApt4LDRLYc8CBM kyxO03j7gestrLFPGUFQboYdHk8jKBbggpcpKNIKEhNj74FNE3un75cjeLCv0DWr5RpO kB4tjf5AjQsmiwcM034+ox0pyOrEBRgL46lynZ73xJvS14pOr5yoKrabsrrDbxsgQKLy 3j7A== 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:mime-version:user-agent:date:message-id:autocrypt :from:subject:cc:to:dkim-signature; bh=KB7NzKpDMptjCbP3+GDqut7U6+dc07DshmQkLhVBunw=; b=ok3yIHnohq1e/x4ds7CW/5XOjjTO+Rbl0RriK7tgvO1Q0aL2u7nYfL61ls7PtPD6sx 06IFzIssorFAgISorzF6ibKY0GOIskT/ByiQ8eaLPl8Iuw/tDgf8Ef42N5pLTBB5R5h2 q2IUicIUuKWYE1HrP80XaIZixeIwBvy3I6gf8vwgMO7XZ3lWbx0/69f6q4WRt0K1pPND hf3+Cokyt6dE91QN0mj+7qydw3r0HJuCvNPP7GiRJ2N0bWhO1YgCpmlDVXW/KXOYy0xq oKLVM5L8r/PYYbcoNxjqWLwOJ/Fv2x02jlG11MbWGlSLaA1y0DLsr1/VY1sYZCRmKgA4 RAVg== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@web.de header.s=dbaedf251592 header.b=UqDUHvc5; 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 by15si3304300ejb.229.2020.04.29.01.51.31; Wed, 29 Apr 2020 01:51:54 -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=UqDUHvc5; 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 S1726637AbgD2ItY (ORCPT + 99 others); Wed, 29 Apr 2020 04:49:24 -0400 Received: from mout.web.de ([212.227.15.3]:39479 "EHLO mout.web.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726345AbgD2ItX (ORCPT ); Wed, 29 Apr 2020 04:49:23 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=web.de; s=dbaedf251592; t=1588150104; bh=KB7NzKpDMptjCbP3+GDqut7U6+dc07DshmQkLhVBunw=; h=X-UI-Sender-Class:To:Cc:Subject:From:Date; b=UqDUHvc5WxUxbi+oY2f9pZDNJsRCkEsmFlOsOZ8B25jq9lU4OmccVNF0SmIr6QWTN XfNyrs6Krzquzsz5MrNYK/Kf5t89DBC0wBOZk2cE6JQFQH5YvrBiMkvM7l7nzVIucJ mqAxv3alwVhHL9MdxKKxoyTegsHoVg7DEDy3Jw8w= X-UI-Sender-Class: c548c8c5-30a9-4db5-a2e7-cb6cb037b8f9 Received: from [192.168.1.2] ([93.133.72.72]) by smtp.web.de (mrweb004 [213.165.67.108]) with ESMTPSA (Nemesis) id 0MfCyA-1jo6WL2o2c-00Opy5; Wed, 29 Apr 2020 10:48:23 +0200 To: Luis Chamberlain , linux-block@vger.kernel.org, linux-fsdevel@vger.kernel.org Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, syzbot+603294af2d01acfdd6da@syzkaller.appspotmail.com, Al Viro , Andrew Morton , Bart Van Assche , Greg Kroah-Hartman , Hannes Reinecke , Ingo Molnar , Jan Kara , Jens Axboe , Michal Hocko , Michal Hocko , Ming Lei , Nicolai Stange , Omar Sandoval , Steven Rostedt , Yu Kuai Subject: Re: [PATCH v3 4/6] blktrace: fix debugfs use after free 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: <78375104-16a5-ea1d-f894-b09b1224d189@web.de> Date: Wed, 29 Apr 2020 10:48:21 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.7.0 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Language: en-GB Content-Transfer-Encoding: quoted-printable X-Provags-ID: V03:K1:jKgAeRtX71p2UHMLLdhso1OOttNxhhTJDLKaJ/YZUekeX/IWw5Q OuXoTGIOlexakMSWjOQjcPfd+Q7Ro2EHfS6eJXzWMlUTKGf/ckEF8H5tCxNFpDXhkno8N2S HwFZBB8W/lxktym5HkUs6tb5AnFpm/UWomhCMAlDPVNj76DD1B9gqesW2iYYVOhY+c+/zlp +LLAdkXgNntbj6fOkTd5A== X-Spam-Flag: NO X-UI-Out-Filterresults: notjunk:1;V03:K0:Tr6Gm8S4U6s=:LtiWerdvf5v4sRgaKGQ+ja c5uGiQR312vJQCjjf6IT14sGkjj5z+zEJ50/CSPHHA5z2xOwjpMJUGi6OgZOTAU/yc1WF5df7 qPUV7OIi5wYkfEhb1IPEWKyvMo403ahBkPwlncUJarUQvH+Q3RL1wQ1rdXcVX1hVQ+OD6y49M iX3IR3AeRTklPD5ajksvU5krKoKOKw82C8x5jgXrNrgs8FZiN3YnyzOaZG7ckXpvhaxNVfp3p TbzZTRNkAWgoJRdl1mVj5njEDxb4kfjadh84TRwTVSm4WKupCHlW3dRvLkz7Ebo4zI3QyYjgR +9e5B/vXe/JPfTgDBjjadMxdKhq7V6vqWy+w19K2amhoB+MzuGk2RLuVBTEFL+OCSF1KBYdod UwzAa3ECk2VJYRoN4AeTkm37XnR1y22BrOnxvCsGkdeo/DDdxlL4F73mKmVxtzSsR9Ind3BWc I2EAm3mhrW42+XPMjErQ/8MD+g1GOLvktSISTkFv3mJqgRKRxYXd59Jjxkl2DDVL/4/6vHo3k 6LVJP8bhtVCzqfXSgsswxDDq4q3quGjXl35SzG1eNPsVYCK1NNrY3aRuiL8stXlGNxfwWj9a6 ypVCnnQ0ZpZ7fuX7U1WUwD2CDXkkBUCFo6uk6cncZ33mwsX//jfSfd6cNL7KT3t8sRr1rBOeg 7E92g44du0YLFprs20Md3taLqTuz4p4hL/ALwcg2xZtD1I+sI7Z6XtgiRRMFR47EzfzO4gJtJ qXARgZ4UXNNpLxSeD55ehqQ2iZXtnp1heL53xZfMiOffT09UVB5T/STh49KtV+lEwEzEb5Yo3 iZNuiG9kgtv530aw2n0c5LzQ5sYGa6VK7TQiyCSQbNKqOMz7yKYKJB/G4V32/brqAk/5ReZn0 0yqtzdi6HeylGJF9UqZoKSDycE7fTe/aP364iDUXO1axBOewQW3oY/psHL/CWykrbUirhTez8 6o03jJW00x1ShYPs/v7dHsXuPX4AJNSapxx19/hPuVQk+mw5XwQQHCdsql/eHHkIknpXrwuxe r3Mooghi/QQPccBbWKD3Bshq4N2GyFZ4kMjFadokPOW1lQu8q3tYB5NA73LwRZt5CBU/7DH8Y EXKhI22jpHCTv2LD+0j5yDAr0rotutNBwvzu/dwRwgfcCwtyngX8dFXQHvWJWhAOA5ghwRGOg y/C63HUNN3pJuoNZWWJNQt1V9PFyWB9qrFWxa27HaqtYH3XdG9cAqACvX2fFQy6YZr7SeiUa2 CbwQSgpkZ9y6D1MOV Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > =E2=80=A6, but a misuse of debugfs within blktace. How do you think about to avoid a typo here for the final change descripti= on? Regards, Markus