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=-1.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_PASS autolearn=unavailable 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 E23D5C282CB for ; Mon, 4 Feb 2019 15:44:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id ABDFD2082E for ; Mon, 4 Feb 2019 15:44:42 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=android.com header.i=@android.com header.b="qhG5sqyd" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729266AbfBDPol (ORCPT ); Mon, 4 Feb 2019 10:44:41 -0500 Received: from mail-pg1-f196.google.com ([209.85.215.196]:41762 "EHLO mail-pg1-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729605AbfBDPoP (ORCPT ); Mon, 4 Feb 2019 10:44:15 -0500 Received: by mail-pg1-f196.google.com with SMTP id m1so86969pgq.8 for ; Mon, 04 Feb 2019 07:44:14 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=android.com; s=20161025; h=subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-transfer-encoding:content-language; bh=hkJeADfIbKLZnzY/b7hJWPKZE9ezXovdEo35SD/Vi4s=; b=qhG5sqydfUHDn4TIjxjj/W/RdQOYD2wKtqcqLEl9WzvxaH1Hq5MhrOTwmW8BA7v6bv RlTVQVIdYBwGgrF4vtIeJpWlCnmWvnQdsjKh7IOyciXaAhjeTKN+MyEc01ykR1K8gbV4 rtBxsemrsbk8sOF16Qpy+FaiIub6eg831M1x6+KcuAvbd9XiRruJrdQO21odT7+GlttQ Iw7MmDb32iqaHHONzPpaVwv5CaxshCGebo/QlKi4HcxaawtanH2btYSDZTAXmMG77d7u 0nMHj67d+Bs59vo5/MFWMeaaWyx8itQsId8uXU9x+iWcPW9oL4ERk8kP8JTFNCUkbR7c J+Bg== 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-transfer-encoding :content-language; bh=hkJeADfIbKLZnzY/b7hJWPKZE9ezXovdEo35SD/Vi4s=; b=jiUAOyXZ/6lpFH4Vy/bbseFf2Cjpjaymf/63BU1ebkMjfXm/BIQfSGn3Hv8H/ePsCH ENLjqS1GOx8r4xGzrCUusSQpifouvpq+Cu4hKA32WTV8wDe2T2pWClcp8DfgijOmLlQi FLCQFHvs9/pNipHrVOUJP6HsmjiyVzcZ+zkUO0OsXVe6mIIQEGa31JxuVKZXzctxwT5X amNiBq5lXvmsnkl6JSuBjA4xO2xr1L//DQUKI73a2S4o57FqXYzQYEX1HTIepZj9W5M6 sYioW+zcPk9ePR5+EniagayhMcYIQccE+xZNTsGGLSoDrH8LX4uDIKaIrPg3J7bVtrtD /gBg== X-Gm-Message-State: AJcUukcXLeXeo1h7fuM30R5qLcIA1hUDMtepE0ZN515aFV8RnZzprswg ojAfn+3DFUSrW5H4VNH14G7cs/ZQI/SgHA== X-Google-Smtp-Source: ALg8bN5ZRP/n3yl+dibz9kUWSISbr1/QuuC5I57vLToRWFL3AcLZNMCYX8l8jdyedRY9I9EwfMOaJw== X-Received: by 2002:a62:28c9:: with SMTP id o192mr52688909pfo.57.1549295053958; Mon, 04 Feb 2019 07:44:13 -0800 (PST) Received: from nebulus.mtv.corp.google.com ([2620:0:1000:1612:b4fb:6752:f21f:3502]) by smtp.googlemail.com with ESMTPSA id z10sm637988pfg.120.2019.02.04.07.44.12 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 04 Feb 2019 07:44:13 -0800 (PST) Subject: Re: stable 3.18 backport: netlink: Trim skb to alloc size to avoid MSG_TRUNC To: linux-kernel@vger.kernel.org Cc: Ronen Arad , "David S . Miller" , Dmitry Safonov , David Ahern , Kirill Tkhai , Andrei Vagin , Li RongQing , YU Bo , Denys Vlasenko , netdev@vger.kernel.org References: <20190201194211.44372-1-salyzyn@android.com> From: Mark Salyzyn Message-ID: <2f4f6669-bdcf-a9ec-2739-d1a2c4e5222d@android.com> Date: Mon, 4 Feb 2019 07:44:12 -0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 MIME-Version: 1.0 In-Reply-To: <20190201194211.44372-1-salyzyn@android.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Content-Language: en-GB Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org On 02/01/2019 11:41 AM, Mark Salyzyn wrote: > if (alloc_size < nlk->max_recvmsg_len) { if (alloc_min_size < nlk->max_recvmgs_len) { -- Mark