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Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.1.2 MIME-Version: 1.0 In-Reply-To: <20191021201848.4231-1-navid.emamdoost@gmail.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: quoted-printable X-Provags-ID: V03:K1:77vlY4Vw7J5s2dUjjAW/OdxwC2PIkEjGDthypIiow25JGaqKBhe 85x+/yAvM7C1nSAJgPT82JafPm4o/U9ZgS8u7Vh1Sml3ZjzlkxsgAJ28oZB5cz/BNe1dvht 74wR0Kkw8cI/oEbDqcRgbeGnIq43n1f3odgRmEH2mUUj9pYlAFY2I3YCFAi6TWVRDhWjIAP G4vUmuLKLNLLVBmSimh3Q== X-UI-Out-Filterresults: notjunk:1;V03:K0:zwP1lSrkeoc=:0a9XvDjX4WsXajoLmgIJ6r Y3aMNKL0C77+YLBRhjwPdHhYZ5Oj/EITbJhcEczNYFW4FHHj1WweCVzkl2qHLQZzFhjsxDMo2 0sTkcJ1JajwCTjj6F2uoUnTbOcFXBJjFQ79C7ZMziTBocKiQnDiQ6ShLHy0PfhcgTfJC5KeFA gsNrEhepUSl6N4SYSCGK6CIxGIvypv3hQGhaaYzc+UFIXq5VdeU+mPQGPsO/PiZvKsBwirh7s z2aYZvv5J5LfuscOdpACJWo19vKfYb9ZtFJ5HHzIUhcxlI/fW/EywEkGdSRGX8//YYmVhE4H4 evsznwReaBMswadQtZO6BPXCiX4OkQRoVmZs/sP+DB/UOWeBJZ78/wC3b4/aWVoBUQj83ObqL qHUhQHEuR3K2nAcEWrnQPz/ldnKd4+oKLlYyBu7CKo5iCUluIcdSDbGVCHA/OsaxrpM7g9HTs 7ge1yNbymoeEBwXAhGtqC28t2fnOf3xQVxUDwhjSQmYE6AsJZhUgNXMKMt3SaT3F/kzmxbAUb PHNnNrsa/ba4Wf5NA7H/cIK4cTRNJkyZVdI1eMwlMk5zVhYvNWcjzgWChs+UdGmHKywxgoK86 M3ZvmfYrws+ZBvRMIYNXtnr7IAZSDDMlsRRtR3tctApngS0x5TgCTtZTPyUitwGtpALjZsUcK IYwwKyjq+QE51AnjxQyUbD/INzyh103zPi2IW837b5MPfORdcjLD0CqlZo9JIRmYSJDTGq/qX QEPNLhDlZ7HojA6+vXHUiAqZOuCdVrV2dsWEEy71fW10q9Nxz4pPogFdP0lRSKEvQ98xqS/nM +8i0hpFQOo7dwIC2IM6QujE5u/PoGRYYbVllRvg3OA2ZQcWGlPdRvEKFiteo8oplKfbDoauKf dmUkuhSt1VsbINj1Tqwuuf+UABvZXjb8pxOjTIn+5/+jLhJJybnrtW+fFcrMQhzR7yijLYTwI 07fIEo6yUT6z9jCbMnsD/sH2MMCI+f2BACu0BKsOcIPRNhPbbjUk6z06+SCbnHdFiS0irpcGW X+nH9k10kA0worXOsUqz7/PuLtdmI0H8CSermeau/AKIn2vDHIQBv8LkMghgHxqAJG89uEIe8 X5lUqeQhGDRzeOH3QJnokiQ1jT670AIXZrdfSkkkG7rb9tYL7kNByAn7l0a62NnyinEcVnaBA kUywuRKs7KUh498baUlG6XfOV/wJ/CATOeZPPAIx5UnUB9J9PUtko20K/Rdig67NhS2sAbBLf JdofDEwhcvc6JIeH24uDIFb7Tg8qs5u/7qk/OVKL2XMnqJkVkmk6q34I5/0k= Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > In the impelementation of ttc_setup_clockevent() the allocated memory > for ttcce should be released if clk_notifier_register() fails. * Please avoid the copying of typos from previous change descriptions. * Under which circumstances will an =E2=80=9Cimperative mood=E2=80=9D matt= er for you here? https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/= Documentation/process/submitting-patches.rst?id=3D7d194c2100ad2a6dded54588= 7d02754948ca5241#n151 > +++ b/drivers/clocksource/timer-cadence-ttc.c > @@ -424,6 +424,7 @@ static int __init ttc_setup_clockevent(struct clk *c= lk, > &ttcce->ttc.clk_rate_change_nb); > if (err) { > pr_warn("Unable to register clock notifier.\n"); > + kfree(ttcce); > return err; > } This addition looks correct. But I would prefer to move such exception handling code to the end of this function implementation so that duplicate source code will be reduced= . https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Do= cumentation/process/coding-style.rst?id=3D7d194c2100ad2a6dded545887d027549= 48ca5241#n450 Regards, Markus From mboxrd@z Thu Jan 1 00:00:00 1970 From: Markus Elfring Date: Tue, 22 Oct 2019 08:26:41 +0000 Subject: Re: [PATCH] clocksource/drivers: Fix memory leak in ttc_setup_clockevent Message-Id: List-Id: References: <20191021201848.4231-1-navid.emamdoost@gmail.com> In-Reply-To: <20191021201848.4231-1-navid.emamdoost@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit To: Navid Emamdoost , linux-arm-kernel@lists.infradead.org Cc: kernel-janitors@vger.kernel.org, Daniel Lezcano , Kangjie Lu , linux-kernel@vger.kernel.org, Michal Simek , Navid Emamdoost , Stephen McCamant , Thomas Gleixner > In the impelementation of ttc_setup_clockevent() the allocated memory > for ttcce should be released if clk_notifier_register() fails. * Please avoid the copying of typos from previous change descriptions. * Under which circumstances will an “imperative mood” matter for you here? https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/process/submitting-patches.rst?id=7d194c2100ad2a6dded545887d02754948ca5241#n151 > +++ b/drivers/clocksource/timer-cadence-ttc.c > @@ -424,6 +424,7 @@ static int __init ttc_setup_clockevent(struct clk *clk, > &ttcce->ttc.clk_rate_change_nb); > if (err) { > pr_warn("Unable to register clock notifier.\n"); > + kfree(ttcce); > return err; > } This addition looks correct. But I would prefer to move such exception handling code to the end of this function implementation so that duplicate source code will be reduced. https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/process/coding-style.rst?id=7d194c2100ad2a6dded545887d02754948ca5241#n450 Regards, Markus 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=-7.0 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 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 66BEDCA9EA0 for ; Tue, 22 Oct 2019 08:27:08 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 2763421783 for ; 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b=p67MYo4vDOx2iE7SXU5Nc7PaQHGeLrs29ySqs2vsy4M+1wv5fXWFn8IBz3eZH+vG/ Zf52ZgkaY4F0o84g/U0abuIaTLo5Hkh04SfwgXn6fXJ04elrt7Kiwsvx/fZnY5cWND xq8pdsAKJSJfch4eFuR+DyBsmQ6PpRF4DGv0uJHM= X-UI-Sender-Class: c548c8c5-30a9-4db5-a2e7-cb6cb037b8f9 Received: from [192.168.1.2] ([93.132.150.42]) by smtp.web.de (mrweb003 [213.165.67.108]) with ESMTPSA (Nemesis) id 0MFL64-1iHH4Z2JCG-00EJI7; Tue, 22 Oct 2019 10:26:43 +0200 References: <20191021201848.4231-1-navid.emamdoost@gmail.com> Subject: Re: [PATCH] clocksource/drivers: Fix memory leak in ttc_setup_clockevent To: Navid Emamdoost , linux-arm-kernel@lists.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: Tue, 22 Oct 2019 10:26:41 +0200 User-Agent: Mozilla/5.0 (X11; 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charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org PiBJbiB0aGUgaW1wZWxlbWVudGF0aW9uIG9mIHR0Y19zZXR1cF9jbG9ja2V2ZW50KCkgdGhlIGFs bG9jYXRlZCBtZW1vcnkKPiBmb3IgdHRjY2Ugc2hvdWxkIGJlIHJlbGVhc2VkIGlmIGNsa19ub3Rp Zmllcl9yZWdpc3RlcigpIGZhaWxzLgoKKiBQbGVhc2UgYXZvaWQgdGhlIGNvcHlpbmcgb2YgdHlw b3MgZnJvbSBwcmV2aW91cyBjaGFuZ2UgZGVzY3JpcHRpb25zLgoKKiBVbmRlciB3aGljaCBjaXJj dW1zdGFuY2VzIHdpbGwgYW4g4oCcaW1wZXJhdGl2ZSBtb29k4oCdIG1hdHRlciBmb3IgeW91IGhl cmU/CiAgaHR0cHM6Ly9naXQua2VybmVsLm9yZy9wdWIvc2NtL2xpbnV4L2tlcm5lbC9naXQvdG9y dmFsZHMvbGludXguZ2l0L3RyZWUvRG9jdW1lbnRhdGlvbi9wcm9jZXNzL3N1Ym1pdHRpbmctcGF0 Y2hlcy5yc3Q/aWQ9N2QxOTRjMjEwMGFkMmE2ZGRlZDU0NTg4N2QwMjc1NDk0OGNhNTI0MSNuMTUx CgoKPiArKysgYi9kcml2ZXJzL2Nsb2Nrc291cmNlL3RpbWVyLWNhZGVuY2UtdHRjLmMKPiBAQCAt NDI0LDYgKzQyNCw3IEBAIHN0YXRpYyBpbnQgX19pbml0IHR0Y19zZXR1cF9jbG9ja2V2ZW50KHN0 cnVjdCBjbGsgKmNsaywKPiAgCQkJCSAgICAmdHRjY2UtPnR0Yy5jbGtfcmF0ZV9jaGFuZ2VfbmIp Owo+ICAJaWYgKGVycikgewo+ICAJCXByX3dhcm4oIlVuYWJsZSB0byByZWdpc3RlciBjbG9jayBu b3RpZmllci5cbiIpOwo+ICsJCWtmcmVlKHR0Y2NlKTsKPiAgCQlyZXR1cm4gZXJyOwo+ICAJfQoK VGhpcyBhZGRpdGlvbiBsb29rcyBjb3JyZWN0LgpCdXQgSSB3b3VsZCBwcmVmZXIgdG8gbW92ZSBz dWNoIGV4Y2VwdGlvbiBoYW5kbGluZyBjb2RlIHRvIHRoZSBlbmQgb2YKdGhpcyBmdW5jdGlvbiBp bXBsZW1lbnRhdGlvbiBzbyB0aGF0IGR1cGxpY2F0ZSBzb3VyY2UgY29kZSB3aWxsIGJlIHJlZHVj ZWQuCmh0dHBzOi8vZ2l0Lmtlcm5lbC5vcmcvcHViL3NjbS9saW51eC9rZXJuZWwvZ2l0L3RvcnZh bGRzL2xpbnV4LmdpdC90cmVlL0RvY3VtZW50YXRpb24vcHJvY2Vzcy9jb2Rpbmctc3R5bGUucnN0 P2lkPTdkMTk0YzIxMDBhZDJhNmRkZWQ1NDU4ODdkMDI3NTQ5NDhjYTUyNDEjbjQ1MAoKUmVnYXJk cywKTWFya3VzCgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f XwpsaW51eC1hcm0ta2VybmVsIG1haWxpbmcgbGlzdApsaW51eC1hcm0ta2VybmVsQGxpc3RzLmlu ZnJhZGVhZC5vcmcKaHR0cDovL2xpc3RzLmluZnJhZGVhZC5vcmcvbWFpbG1hbi9saXN0aW5mby9s aW51eC1hcm0ta2VybmVsCg==