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=-5.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 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 5FE2CC33CAA for ; Mon, 20 Jan 2020 21:39:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3904722522 for ; Mon, 20 Jan 2020 21:39:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727683AbgATVj2 (ORCPT ); Mon, 20 Jan 2020 16:39:28 -0500 Received: from www62.your-server.de ([213.133.104.62]:50446 "EHLO www62.your-server.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726752AbgATVj2 (ORCPT ); Mon, 20 Jan 2020 16:39:28 -0500 Received: from sslproxy01.your-server.de ([88.198.220.130]) by www62.your-server.de with esmtpsa (TLSv1.2:DHE-RSA-AES256-GCM-SHA384:256) (Exim 4.89_1) (envelope-from ) id 1itelX-0006K0-5E; Mon, 20 Jan 2020 22:39:23 +0100 Received: from [178.197.248.27] (helo=pc-9.home) by sslproxy01.your-server.de with esmtpsa (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.89) (envelope-from ) id 1itelW-0001HR-LT; Mon, 20 Jan 2020 22:39:22 +0100 Subject: Re: [PATCH v2 bpf-next] bpf: Fix memory leaks in generic update/delete batch ops To: Brian Vazquez , Brian Vazquez , Alexei Starovoitov , "David S . Miller" Cc: linux-kernel@vger.kernel.org, netdev@vger.kernel.org, bpf@vger.kernel.org, Dan Carpenter , Yonghong Song References: <20200119194040.128369-1-brianvv@google.com> From: Daniel Borkmann Message-ID: <39e16779-39e8-3dd3-455e-949b6bd04de9@iogearbox.net> Date: Mon, 20 Jan 2020 22:39:21 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.7.2 MIME-Version: 1.0 In-Reply-To: <20200119194040.128369-1-brianvv@google.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-Authenticated-Sender: daniel@iogearbox.net X-Virus-Scanned: Clear (ClamAV 0.101.4/25701/Mon Jan 20 12:41:43 2020) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 1/19/20 8:40 PM, Brian Vazquez wrote: > generic update/delete batch ops functions were using __bpf_copy_key > without properly freeing the memory. Handle the memory allocation and > copy_from_user separately. > > Reported-by: Dan Carpenter > Fixes: aa2e93b8e58e ("bpf: Add generic support for update and delete batch ops") > Signed-off-by: Brian Vazquez > Acked-by: Yonghong Song Applied, thanks!