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=-4.0 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no 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 595E2C433E1 for ; Wed, 15 Jul 2020 14:48:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 37BF120658 for ; Wed, 15 Jul 2020 14:48:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729699AbgGOOsO convert rfc822-to-8bit (ORCPT ); Wed, 15 Jul 2020 10:48:14 -0400 Received: from youngberry.canonical.com ([91.189.89.112]:49723 "EHLO youngberry.canonical.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729690AbgGOOsN (ORCPT ); Wed, 15 Jul 2020 10:48:13 -0400 Received: from mail-pl1-f198.google.com ([209.85.214.198]) by youngberry.canonical.com with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.86_2) (envelope-from ) id 1jvihe-0001zU-Tf for linux-nfs@vger.kernel.org; Wed, 15 Jul 2020 14:48:11 +0000 Received: by mail-pl1-f198.google.com with SMTP id y9so2504693plr.9 for ; Wed, 15 Jul 2020 07:48:10 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:content-transfer-encoding:mime-version :subject:message-id:date:cc:to; bh=LCvS2Mg+NMZP1rAlw+7qixFYYr8UXQD9EiMJwb616iQ=; b=QUeyRK3SjYZBPthk7THHUbJ4VSKA/JUpJRt23aGH5+dUtDj67P4tJyCzcDl549hQ6A S6jP01mMCntFs+qa+fJRhS+M+PMoGap9ePMjkKu1AKPyZzgvN2u50/lNG5jMGODbgjBj iHvfQF3QttuycbGZv74ji3CTP+dnA+bO7s7jz6nInLcvQwC94lydjdV0RinFCZ5f27EX NRBWxuPmLIOBAYrxxQjWpS53spTcxzENB9yY6Du66ol9L6/E3CeuKgTV1FXFDHN3jMVk vUhTm+mjWcSuNQW8O6RG+dpBoU56llfx1pPkfrBFEUlQDw5rSbKnvNjr+cMnD/SKnKxW CTng== X-Gm-Message-State: AOAM531Hevgodeo6QJ0aWM5+4Pa6whpxN/24CXDOBUUE0RBkKeAzT1HY htcG1PtaNMK7tPc8GXHMCZ1SfnmbOieUDuc/2fr37dgwCU2Ffe0lS1g4ws5bHNaE3xtMuG/aVnx YW3nWQU5usmxJ1rnqeT0qv0jLia1rvh586BZORQ== X-Received: by 2002:a17:90a:c68e:: with SMTP id n14mr10261831pjt.182.1594824489583; Wed, 15 Jul 2020 07:48:09 -0700 (PDT) X-Google-Smtp-Source: ABdhPJxKrlh1HvbeAaJgRiC//V1igGnVxmU5HjSc1N2Q+BfJgRLVgPaPWhuIYiLFaQfZuLdvy30qlg== X-Received: by 2002:a17:90a:c68e:: with SMTP id n14mr10261800pjt.182.1594824489274; Wed, 15 Jul 2020 07:48:09 -0700 (PDT) Received: from [192.168.1.208] (220-133-187-190.HINET-IP.hinet.net. [220.133.187.190]) by smtp.gmail.com with ESMTPSA id f72sm2391275pfa.66.2020.07.15.07.48.07 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Wed, 15 Jul 2020 07:48:08 -0700 (PDT) From: Kai-Heng Feng Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 8BIT Mime-Version: 1.0 (Mac OS X Mail 13.4 \(3608.80.23.2.2\)) Subject: [Regression] "SUNRPC: Add "@len" parameter to gss_unwrap()" breaks NFS Kerberos on upstream stable 5.4.y Message-Id: <309E203B-8818-4E33-87F0-017E127788E2@canonical.com> Date: Wed, 15 Jul 2020 22:48:06 +0800 Cc: matthew.ruffell@canonical.com, linux-stable , linux-nfs@vger.kernel.org, "open list:NETWORKING DRIVERS" , open list To: chuck.lever@oracle.com X-Mailer: Apple Mail (2.3608.80.23.2.2) Sender: linux-nfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-nfs@vger.kernel.org Hi, Multiple users reported NFS causes NULL pointer dereference [1] on Ubuntu, due to commit "SUNRPC: Add "@len" parameter to gss_unwrap()" and commit "SUNRPC: Fix GSS privacy computation of auth->au_ralign". The same issue happens on upstream stable 5.4.y branch. The mainline kernel doesn't have this issue though. Should we revert them? Or is there any missing commits need to be backported to v5.4? [1] https://bugs.launchpad.net/bugs/1886277 Kai-Heng