From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33414 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731466AbgGUVRM (ORCPT ); Tue, 21 Jul 2020 17:17:12 -0400 Received: from mail-lj1-x241.google.com (mail-lj1-x241.google.com [IPv6:2a00:1450:4864:20::241]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BC3D1C0619DC for ; Tue, 21 Jul 2020 14:17:11 -0700 (PDT) Received: by mail-lj1-x241.google.com with SMTP id f5so198464ljj.10 for ; Tue, 21 Jul 2020 14:17:11 -0700 (PDT) Received: from mail-lf1-f53.google.com (mail-lf1-f53.google.com. [209.85.167.53]) by smtp.gmail.com with ESMTPSA id o1sm5082367ljj.82.2020.07.21.14.17.07 for (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 21 Jul 2020 14:17:08 -0700 (PDT) Received: by mail-lf1-f53.google.com with SMTP id k13so134537lfo.0 for ; Tue, 21 Jul 2020 14:17:07 -0700 (PDT) MIME-Version: 1.0 References: <20200721202425.GA2786714@ZenIV.linux.org.uk> <20200721202549.4150745-1-viro@ZenIV.linux.org.uk> <20200721202549.4150745-4-viro@ZenIV.linux.org.uk> <20200721211118.GB2786714@ZenIV.linux.org.uk> In-Reply-To: <20200721211118.GB2786714@ZenIV.linux.org.uk> From: Linus Torvalds Date: Tue, 21 Jul 2020 14:16:51 -0700 Message-ID: Subject: Re: [PATCH 04/18] csum_and_copy_..._user(): pass 0xffffffff instead of 0 as initial sum Content-Type: text/plain; charset="UTF-8" Sender: linux-arch-owner@vger.kernel.org List-ID: To: Al Viro Cc: Linux Kernel Mailing List , linux-arch Message-ID: <20200721211651.7VfL8PkASozWpBdvo9WKyDZDTs5nm6R8F00YWrR1Zns@z> On Tue, Jul 21, 2020 at 2:11 PM Al Viro wrote: > > > > But I didn't check. Maybe we don't have anything that stupid in the kernel. > > I did. So then the commit message really should have said so, I feel. That would have avoided the whole worry, and made it clear that it's not an issue. Linus