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,URIBL_BLOCKED, 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 6CE11C432C0 for ; Mon, 18 Nov 2019 16:23:02 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 0CEE420885 for ; Mon, 18 Nov 2019 16:23:01 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0CEE420885 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=virtuozzo.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 8D3CF6B0007; Mon, 18 Nov 2019 11:23:01 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 883BF6B0008; Mon, 18 Nov 2019 11:23:01 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 7724C6B000A; Mon, 18 Nov 2019 11:23:01 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0062.hostedemail.com [216.40.44.62]) by kanga.kvack.org (Postfix) with ESMTP id 5D88F6B0007 for ; Mon, 18 Nov 2019 11:23:01 -0500 (EST) Received: from smtpin13.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay05.hostedemail.com (Postfix) with SMTP id CB2DE181AEF09 for ; Mon, 18 Nov 2019 16:23:00 +0000 (UTC) X-FDA: 76169917320.13.feet63_1a3eebc885028 X-HE-Tag: feet63_1a3eebc885028 X-Filterd-Recvd-Size: 1771 Received: from relay.sw.ru (relay.sw.ru [185.231.240.75]) by imf25.hostedemail.com (Postfix) with ESMTP for ; Mon, 18 Nov 2019 16:23:00 +0000 (UTC) Received: from dhcp-172-16-25-5.sw.ru ([172.16.25.5]) by relay.sw.ru with esmtp (Exim 4.92.3) (envelope-from ) id 1iWjnP-0006u4-8v; Mon, 18 Nov 2019 19:22:35 +0300 Subject: Re: [PATCH v4 1/3] kasan: No KASAN's memmove check if archs don't have it. To: Nick Hu , glider@google.com, dvyukov@google.com, corbet@lwn.net, paul.walmsley@sifive.com, palmer@sifive.com, aou@eecs.berkeley.edu, tglx@linutronix.de, gregkh@linuxfoundation.org, alankao@andestech.com, Anup.Patel@wdc.com, atish.patra@wdc.com, kasan-dev@googlegroups.com, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, linux-mm@kvack.org, green.hu@gmail.com References: <20191028024101.26655-1-nickhu@andestech.com> <20191028024101.26655-2-nickhu@andestech.com> From: Andrey Ryabinin Message-ID: <73f11f1e-6df7-c217-e05d-049d04717600@virtuozzo.com> Date: Mon, 18 Nov 2019 19:22:23 +0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.2.2 MIME-Version: 1.0 In-Reply-To: <20191028024101.26655-2-nickhu@andestech.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On 10/28/19 5:40 AM, Nick Hu wrote: > If archs don't have memmove then the C implementation from lib/string.c is used, > and then it's instrumented by compiler. So there is no need to add KASAN's > memmove to manual checks. > > Signed-off-by: Nick Hu > --- Acked-by: Andrey Ryabinin