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=-2.5 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,USER_AGENT_MUTT 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 9F333C43142 for ; Thu, 2 Aug 2018 13:19:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 582B3214AB for ; Thu, 2 Aug 2018 13:19:54 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 582B3214AB Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=fieldses.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387480AbeHBPLC (ORCPT ); Thu, 2 Aug 2018 11:11:02 -0400 Received: from fieldses.org ([173.255.197.46]:35896 "EHLO fieldses.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732349AbeHBPLC (ORCPT ); Thu, 2 Aug 2018 11:11:02 -0400 Received: by fieldses.org (Postfix, from userid 2815) id E3E322019; Thu, 2 Aug 2018 09:19:51 -0400 (EDT) Date: Thu, 2 Aug 2018 09:19:51 -0400 From: "J. Bruce Fields" To: Nixiaoming Cc: "jlayton@kernel.org" , "chuck.lever@oracle.com" , "trondmy@hammerspace.com" , "andros@netapp.com" , "linux-nfs@vger.kernel.org" , "linux-kernel@vger.kernel.org" Subject: Re: [PATCH v2] fs/nfsd: Delete invalid assignment statements in nfsd4_decode_exchange_id Message-ID: <20180802131951.GA30706@fieldses.org> References: <20180723015711.27961-1-nixiaoming@huawei.com> <20180801151820.GA18338@fieldses.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Aug 02, 2018 at 01:00:26PM +0000, Nixiaoming wrote: > On Wednesday, August 01, 2018 11:18 PM , J. Bruce Fields wrote: > >On Mon, Jul 23, 2018 at 09:57:11AM +0800, nixiaoming wrote: > >> READ_BUF(8); > >> dummy = be32_to_cpup(p++); > >> dummy = be32_to_cpup(p++); > >> ... > >> READ_BUF(4); > >> dummy = be32_to_cpup(p++); > >> > >> Assigning value to "dummy" here, but that stored value > >> is overwritten before it can be used. > >> At the same time READ_BUF() will re-update the pointer p. > >> > >> delete invalid assignment statements > > > >Thanks, applying with a minor comment tweak to clarify that we're > >intentionally not reading these: > > > >- /* ssp_window and ssp_num_gss_handles */ > >+ /* ignore ssp_window and ssp_num_gss_handles: */ > > READ_BUF(8); > > break; > > > >--b. > > > > Thanks for your advice > I will update the patch as soon as possible according to your advice. I've taken care of it, no need to update. --b.