Received: by 2002:a25:8b12:0:0:0:0:0 with SMTP id i18csp1398202ybl; Thu, 22 Aug 2019 13:58:51 -0700 (PDT) X-Google-Smtp-Source: APXvYqwOroQIEACuoxOO6AIRYZ3APyLvyIBHj+OHN5tC+NnPOq/JmF5wjoNcn/CB3ZqcGpXiRft1 X-Received: by 2002:aa7:9edc:: with SMTP id r28mr1176921pfq.219.1566507531109; Thu, 22 Aug 2019 13:58:51 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1566507531; cv=none; d=google.com; s=arc-20160816; b=iPJOD4/m7c8wX/OGeJ1WIFHwu2MmHOFSbGI+0+zxvljiIa1SqXJaPSYHJbgBYHPcRU 8nTqAv5A+BLEdJ2FVaDPOtG6H1362Fvo4dWabSuJNGW3J+kVIe/aoukUT/lkLenOghzv 2XpXH3o1xq43m0KpElfKVYkEDE4YmgxrSTevywfT81Ut/Vq/dRt/OUb7LicFlALITlgN Bdt1nmWVFblCHyEmiEhI/1zmPc69eU9pmNnlva5gBqPdseG0Vc6FKlWkvsKKsDP19LM4 vSoVX7mOwZealM9h+6qihQCxRc7LSk7F73ICMX4yVqNhlrmpKncjFDTF6G9fQq6uKk4/ 4c8w== 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 :openpgp:subject:from:cc:to:dkim-signature; bh=xnd+7e+QiDB3MWdDciFZbyID+HeNpik+fuOQyVHjIfo=; b=HwPxdb02NcLTtbDauzh1bkSj+LQTfJ3GP07qU6Kj7jyjzo/p1mHrY5GVbVasPbQTpg wQRDpmptRR92sg65fel/xpr6Lt8ay03nqitpABCkJ+51/kbJpJD3QXsfstePP/+n6WmQ J7/nQXj/IkV9Fn1ZV+BXDAZUpgDZvtFVrGG30xQ8nYPAtBAKayqntMYgf/zIbgRyWt9B oVMRkwX0eniPAKJipoStQ6WKjqnyPe9NnaVa7w5DalAQXQ6b9JS7bsXhy6/Y7t+zU19I bSnYBMPtxC0x8Sg6Xvyey04WDEc8K6xbRrywm8V4cEOgq6b2I+FzfUTuRdeZPtrZ8dm9 H9zA== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@web.de header.s=dbaedf251592 header.b=LLxs7JY+; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id x17si626096pfr.167.2019.08.22.13.58.35; Thu, 22 Aug 2019 13:58:51 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@web.de header.s=dbaedf251592 header.b=LLxs7JY+; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389789AbfHVQJK (ORCPT + 99 others); Thu, 22 Aug 2019 12:09:10 -0400 Received: from mout.web.de ([217.72.192.78]:42781 "EHLO mout.web.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1733169AbfHVQJJ (ORCPT ); Thu, 22 Aug 2019 12:09:09 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=web.de; s=dbaedf251592; t=1566490129; bh=VUcjr2Cof96KVPeedy+xoIMhTIz/ausJ0oZCbuvy7qo=; h=X-UI-Sender-Class:To:Cc:From:Subject:Date; b=LLxs7JY+RP78Wz/ZhGTkmkRKPJQg7/X5W5OR1DYAcDz7XLTdkmjiDIGcC3V5fW7nc xgpS/gaystoHdV6bQQ3aQkVpeekgIGl12GIfUcLI4SALpybVmrowhmIGV0MQsPGbd9 rLxhHW7kCxMGAVOfsIL1vZW2mrf3DTddNZpV63LA= X-UI-Sender-Class: c548c8c5-30a9-4db5-a2e7-cb6cb037b8f9 Received: from [192.168.1.2] ([78.49.181.43]) by smtp.web.de (mrweb102 [213.165.67.124]) with ESMTPSA (Nemesis) id 0LoHgL-1iTXke2THN-00gHr6; Thu, 22 Aug 2019 18:08:49 +0200 To: netdev@vger.kernel.org, bpf@vger.kernel.org, Daniel Borkmann , "David S. Miller" , John Fastabend Cc: LKML , kernel-janitors@vger.kernel.org From: Markus Elfring Subject: =?UTF-8?Q?=5bPATCH=5d_net/core/skmsg=3a_Delete_an_unnecessary_check?= =?UTF-8?Q?_before_the_function_call_=e2=80=9cconsume=5fskb=e2=80=9d?= Openpgp: preference=signencrypt 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: <2755f638-7846-91f2-74f4-61031f3e34c8@web.de> Date: Thu, 22 Aug 2019 18:08:48 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: quoted-printable X-Provags-ID: V03:K1:rFoS5Qm0zQNDxSjLaEBNG6/iaAo/0ONoL90ykaX+G3oV3ihK205 mjpDpZlFYy64pWO7FtybVu+35tNaY74ag2c9Tf74WpyZR/ZjORdvHOkPm4RFZMX14VkN6/f D0AYWbtzxLoELcq1ZFR/4WugJ5yfeTTzBeKuNbA+az89DbiPF8PiFgDDltrqGllA6XOxXRx MBkBe7FoF1J9meYFo4TFw== X-Spam-Flag: NO X-UI-Out-Filterresults: notjunk:1;V03:K0:TRhDJRjAWZM=:ho/iUd/R6wM9rcGnjnohUl FXdP7pPCa72rZp8HwietPZEPVpVBBn81i1ImQujHPblzHqCp9wQ6iB+KIivaqrVn3uwF1G8Yb QOnZcgBWldCQhZax/okYa3MmmTKWmox88xxRiAma0G5izeRfeMfC6qjCeamSVEZZc/KTJ0+Ij rlKMWJiJfJbVq3rqoh68uMNV0buT4XYYKbGM0mn36tD8EIHRlDEBeTNGojJ7SYJ2WrgkCQ1Zy z7cnXwart8QBVQP8U5O6Ezk2bVnyhNoM4vcPD0t/61T9gIerH32bkQIzGX5oCjHh35PLeAQ1G HsXV1y1FTYuQgVozx+t22AywNZcrnoB6sQkEE/N1VdVoxJvF3qD+yeMrfAYTjcFq3+fn/qA39 wYj3XPeMavz5p9H8h9Ys7gtuit70bzzaOtWDStpt1U1zadSCUWwHkUyOUeaF++jiCU4NTTovd Uem/qGoFRdTVwdQNP2Y8vsScM2vdNdVeP3G3KWhAhKhoQpsMqNeHYL16jLh0HnxEYyA/RnJ4Y 1Bf+WCp02/SVDnoiz6gZWwMlGeQJb0YyKuyoGFWUjhsF3TckFIt9jYRAKSwklXq/6mv+2+s3B 8QGodkucKsACuaMnW31DSAfnOpQYsmKFzm2Jtia9ZbdacCPX3PZwwEWmbk44fpown+j5SJ+S9 Z07azS5RLYdvBKUdm41/TpYckf4UJFfog22BKn0ySYx6NREUbhy0alQ4bRBHo5K+IHIgNHRX6 NYyYJhuJi+3wy+sYRaTbDYfqa9pnXFZiOfLWqGFqq2s9+FJxpHBhVJIqXC5WFsfF1a7rGgToM Fl8SPPVJpOOyx6nEH1FXtYhfDx5qTCqzvWNUXNTkiFpp3rKqMAX+Al8qQD5nsuMHV9CavUUox 9MRqwCCzgCd1i+6UetK9ehr7uBj0tIZSreSVPWLMim6cnjTQ/WnF0DjxXmKnT8Q7xHts0h7p8 d8zUGAwBSZzaX7Wb8Ykkdwd3L/D5TWJUyoV8IXG4DnZmbIIRLP2TdNfc8SSAwLRgk5n+sf96D Kz5J0IqswNRCy4dkhVZqf3EDWYtjUD94UR75Yy7fMgsSugth09u2yF85H2gjmuyB2JTfIgawU i5u1oeHpQLl2ZMDtCIpm/4OtlD+VB7KfnMIFPenx8DnPphu11C93GUSKEbfDfsp/OYN8oWDsb OA9vo= Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Markus Elfring Date: Thu, 22 Aug 2019 18:00:40 +0200 The consume_skb() function performs also input parameter validation. Thus the test around the call is not needed. This issue was detected by using the Coccinelle software. Signed-off-by: Markus Elfring =2D-- net/core/skmsg.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/net/core/skmsg.c b/net/core/skmsg.c index 6832eeb4b785..cf390e0aa73d 100644 =2D-- a/net/core/skmsg.c +++ b/net/core/skmsg.c @@ -190,8 +190,7 @@ static int __sk_msg_free(struct sock *sk, struct sk_ms= g *msg, u32 i, sk_msg_check_to_free(msg, i, msg->sg.size); sge =3D sk_msg_elem(msg, i); } - if (msg->skb) - consume_skb(msg->skb); + consume_skb(msg->skb); sk_msg_init(msg); return freed; } =2D- 2.23.0