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 688F6C43603 for ; Thu, 19 Dec 2019 21:26:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 4799724679 for ; Thu, 19 Dec 2019 21:26:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727229AbfLSV02 (ORCPT ); Thu, 19 Dec 2019 16:26:28 -0500 Received: from www62.your-server.de ([213.133.104.62]:60496 "EHLO www62.your-server.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726880AbfLSV02 (ORCPT ); Thu, 19 Dec 2019 16:26:28 -0500 Received: from 31.249.197.178.dynamic.dsl-lte-bonding.lssmb00p-msn.res.cust.swisscom.ch ([178.197.249.31] helo=localhost) by www62.your-server.de with esmtpsa (TLSv1.2:DHE-RSA-AES256-GCM-SHA384:256) (Exim 4.89_1) (envelope-from ) id 1ii3JS-0005a8-Jf; Thu, 19 Dec 2019 22:26:26 +0100 Date: Thu, 19 Dec 2019 22:26:26 +0100 From: Daniel Borkmann To: Aditya Pakki Cc: kjlu@umn.edu, Alexei Starovoitov , Martin KaFai Lau , Song Liu , Yonghong Song , Andrii Nakryiko , netdev@vger.kernel.org, bpf@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2] bpf: Remove unnecessary assertion on fp_old Message-ID: <20191219212626.GA19344@pc-9.home> References: <20191219175735.19231-1-pakki001@umn.edu> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20191219175735.19231-1-pakki001@umn.edu> User-Agent: Mutt/1.12.1 (2019-06-15) X-Authenticated-Sender: daniel@iogearbox.net X-Virus-Scanned: Clear (ClamAV 0.101.4/25668/Thu Dec 19 10:55:58 2019) Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org On Thu, Dec 19, 2019 at 11:57:35AM -0600, Aditya Pakki wrote: > The two callers of bpf_prog_realloc - bpf_patch_insn_single and > bpf_migrate_filter dereference the struct fp_old, before passing > it to the function. Thus assertion to check fp_old is unnecessary > and can be removed. > > Signed-off-by: Aditya Pakki Applied, thanks!