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=-5.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_1 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 453CAC432C0 for ; Thu, 21 Nov 2019 07:47:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 184D12088F for ; Thu, 21 Nov 2019 07:47:32 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="fiYcxH6U" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726739AbfKUHrb (ORCPT ); Thu, 21 Nov 2019 02:47:31 -0500 Received: from mail-pj1-f67.google.com ([209.85.216.67]:37161 "EHLO mail-pj1-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726437AbfKUHrb (ORCPT ); Thu, 21 Nov 2019 02:47:31 -0500 Received: by mail-pj1-f67.google.com with SMTP id f3so1094748pjg.4; Wed, 20 Nov 2019 23:47:31 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:to:cc:subject:message-id:mime-version:content-disposition :user-agent; bh=bPzli0UbnIkOuw3Obh9ByfekwddOHEm4S9pnT6dhJAw=; b=fiYcxH6U0LxbtGZxga3o8u5x20JnP+ppgJdVTAfnkK9kn2X/XzwWAHbyq5JzJ1nGxv KFAJSnZKm8uZyYQDe81yPlfKl2UkeJEGl1AA4mDvxT5raq1J+zU8gwKT0rdCiiacRaGa pASYPbuFQ320DGsYaviIK5Jr771oSniNrEbkgOvG7YOZXm4jwGpilriveKcngGJK8mon i95fzCdgJU1blqz0LuQ9Vk8HNlutNWCiKegu6B3xeNQviYrCTEiKVo3O/eQeo6xA1HRt PEONxO8+ktmhqr0eZrZHOd2bhlnKaBZegGUAukUm1saGnF2YMOhA430KIfLBhW+NXHBj EyOg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:mime-version :content-disposition:user-agent; bh=bPzli0UbnIkOuw3Obh9ByfekwddOHEm4S9pnT6dhJAw=; b=aofMssRGhuXG2sgZ84/Ff3gB/3HDWRtCPNd6d1O9RBokTaXNncAk0VhykpMFXIl+hd YKATozw+QaxBa8H2hKuTDljr4tgNLKfEfw44TX+hlbcYRdbWC3lvfqWjfUS03H6fmgVq +LPBrTtFvgNVTBcST28hKZCkhf3SPqjSgLTDc1NrSDjCOcSRsW6UbWNT70iDjayjnDbX lry2k8QYoil2PlsQTAcbYRNzn5Kxh7c/ItdGuXk2o/QEsgcOWCkXeO9RXHxFho2VpY+N CRHzLaeKkOlU7shsRpBukzaNpwNf1RD7er6WTeiV0BpH/MKThowfZOiFvN6xOLYCW+RL 6obw== X-Gm-Message-State: APjAAAWcQ5v2PlXdhaeS8NkO8Tt6wJbqe54Xkr86RKHhHE+074mBkbZt 6+ZFJ6odXs/2qK00CJLFj0RM0BNV X-Google-Smtp-Source: APXvYqzA4wKcUaP3fSi0u49yfp0Cu1bVQg+vavVdmm0K5SRY2Yu7k3JEDUOmxc17MPSHJGg3pGlvhA== X-Received: by 2002:a17:902:76cb:: with SMTP id j11mr7070605plt.50.1574322450729; Wed, 20 Nov 2019 23:47:30 -0800 (PST) Received: from udknight.localhost ([183.250.89.86]) by smtp.gmail.com with ESMTPSA id t27sm2118278pfq.169.2019.11.20.23.47.29 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 20 Nov 2019 23:47:30 -0800 (PST) Received: from udknight.localhost (localhost [127.0.0.1]) by udknight.localhost (8.14.9/8.14.4) with ESMTP id xAL7lQeW015510; Thu, 21 Nov 2019 15:47:26 +0800 Received: (from root@localhost) by udknight.localhost (8.14.9/8.14.9/Submit) id xAL7lP2k015509; Thu, 21 Nov 2019 15:47:25 +0800 Date: Thu, 21 Nov 2019 15:47:25 +0800 From: Wang YanQing To: stable@vger.kernel.org Cc: stephen@networkplumber.org, ast@kernel.org, songliubraving@fb.com, yhs@fb.com, daniel@iogearbox.net, itugrok@yahoo.com, bpf@vger.kernel.org Subject: [PATCH] bpf, x32: Fix bug with ALU64 {LSH, RSH, ARSH} BPF_K shift by 0 Message-ID: <20191121074725.GA15476@udknight> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.7.1 (2016-10-04) Sender: bpf-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org commit 6fa632e719eec4d1b1ebf3ddc0b2d667997b057b upstream. The fix only affects x32 bpf jit, and it is critical to use x32 bpf jit on a unpatched system, so I think we should backport it to the only affected stable kernel version: v4.19 Thanks. Cc: #4.19 Signed-off-by: Wang YanQing