From patchwork Mon Oct 28 02:40:59 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nick Hu X-Patchwork-Id: 11214467 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 6F4FA1709 for ; Mon, 28 Oct 2019 02:42:20 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 15CFD20663 for ; Mon, 28 Oct 2019 02:42:20 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="e67ifBqF" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 15CFD20663 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=andestech.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-riscv-bounces+patchwork-linux-riscv=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=8dHgnDrKykGBMOQSQGrFLtpkUSzDRl+8ozm7D51vnLU=; b=e67ifBqFqPXkoW 7hhBoyw+gFoGimICpKI1Zle610wALtXT0lwtnibm6cdHn+5/KFbwU2Sh4IJLMWIdYN8PujdiE2V2X S/Sf5rcSN4usfibA2fXYg3SH1EMm/686dhO1HFFJI1PSPAzlEV6j/MC3eFfAWRx8SWDa1zLRvRtWE 4BRVP8aVyhr6icgPMxIElFRsLb24gO1Ap3sb9Mn8QKGLg7NH3vh6/1HxgpnDorHwZQT33L1Rz6Z5p PVziK+ZHlntdfhuX6vwpifWd8fCfdxNwwPg6p9jRHH7zUinW7z9lka0qEi08ID1my+O49q0zVnD/o dksn//G3/8UvVOPoQiYg==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1iOuz4-00070G-9E; Mon, 28 Oct 2019 02:42:18 +0000 Received: from 59-120-53-16.hinet-ip.hinet.net ([59.120.53.16] helo=ATCSQR.andestech.com) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1iOuz1-0006rg-0W for linux-riscv@lists.infradead.org; Mon, 28 Oct 2019 02:42:17 +0000 Received: from mail.andestech.com (atcpcs16.andestech.com [10.0.1.222]) by ATCSQR.andestech.com with ESMTP id x9S2O9tf087229; Mon, 28 Oct 2019 10:24:09 +0800 (GMT-8) (envelope-from nickhu@andestech.com) Received: from atcsqa06.andestech.com (10.0.15.65) by ATCPCS16.andestech.com (10.0.1.222) with Microsoft SMTP Server id 14.3.123.3; Mon, 28 Oct 2019 10:41:38 +0800 From: Nick Hu To: , , , , , , , , , , , , , , , , , Subject: [PATCH v4 1/3] kasan: No KASAN's memmove check if archs don't have it. Date: Mon, 28 Oct 2019 10:40:59 +0800 Message-ID: <20191028024101.26655-2-nickhu@andestech.com> X-Mailer: git-send-email 2.17.0 In-Reply-To: <20191028024101.26655-1-nickhu@andestech.com> References: <20191028024101.26655-1-nickhu@andestech.com> MIME-Version: 1.0 X-Originating-IP: [10.0.15.65] X-DNSRBL: X-MAIL: ATCSQR.andestech.com x9S2O9tf087229 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191027_194215_341108_2F0BA4C1 X-CRM114-Status: UNSURE ( 6.06 ) X-CRM114-Notice: Please train this message. X-Spam-Score: 0.4 (/) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (0.4 points) pts rule name description ---- ---------------------- -------------------------------------------------- 0.0 TVD_RCVD_IP Message was received from an IP address -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record 0.4 RDNS_DYNAMIC Delivered to internal network by host with dynamic-looking rDNS X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Nick Hu Sender: "linux-riscv" Errors-To: linux-riscv-bounces+patchwork-linux-riscv=patchwork.kernel.org@lists.infradead.org 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: Dmitry Vyukov Acked-by: Andrey Ryabinin --- mm/kasan/common.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/mm/kasan/common.c b/mm/kasan/common.c index 6814d6d6a023..897f9520bab3 100644 --- a/mm/kasan/common.c +++ b/mm/kasan/common.c @@ -107,6 +107,7 @@ void *memset(void *addr, int c, size_t len) return __memset(addr, c, len); } +#ifdef __HAVE_ARCH_MEMMOVE #undef memmove void *memmove(void *dest, const void *src, size_t len) { @@ -115,6 +116,7 @@ void *memmove(void *dest, const void *src, size_t len) return __memmove(dest, src, len); } +#endif #undef memcpy void *memcpy(void *dest, const void *src, size_t len)