From patchwork Wed Feb 28 14:30:37 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jinbum Park X-Patchwork-Id: 10247647 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 823BE60362 for ; Wed, 28 Feb 2018 14:33:42 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 6FB4528D61 for ; Wed, 28 Feb 2018 14:33:42 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 6402C28D64; Wed, 28 Feb 2018 14:33:42 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.9 required=2.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED,DKIM_VALID,FREEMAIL_FROM autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 11F4C28D61 for ; Wed, 28 Feb 2018 14:33:42 +0000 (UTC) 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:Message-ID:Subject:To:From :Date:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=Vv1nuFyThRea3AltQEuOFZrpxUX3B4zzQBrUvLq6KzM=; b=Dzh90QFx940FrW 7J97t31tAX1IgjqEVWSAQ+89eBfTiF50NJC51kJi7qEZ9ZOECUUc/ji90wlNmT6rfJ2gxesqTAPoR C+ars9qsboBgnF22M9AhtavOZXJV3SGl2fZgSgWOQsybdYXqfuwym/erWpvyqLuvaJCyhYGI2/tpy iHRuV75yEGqVikXMNE4qK5fpH5HTw+N8cmccGSCgbw4u57HswB1GqN8xOS2KIZpfmF1s2FeWcJVpZ C0gq0PzocM9U5I0fox1Nsj/x3CPWQDWCAcfsWETcpr9zCcx9a6LUZXDx2xfvn0u2W0whtP3lAboqe CUauxM2+5oQd7CpS4kQw==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.89 #1 (Red Hat Linux)) id 1er2nV-0003cF-35; Wed, 28 Feb 2018 14:33:33 +0000 Received: from mail-pg0-x244.google.com ([2607:f8b0:400e:c05::244]) by bombadil.infradead.org with esmtps (Exim 4.89 #1 (Red Hat Linux)) id 1er2ky-0001sB-5S for linux-arm-kernel@lists.infradead.org; Wed, 28 Feb 2018 14:31:01 +0000 Received: by mail-pg0-x244.google.com with SMTP id m19so1001585pgn.1 for ; Wed, 28 Feb 2018 06:30:45 -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=iomQ1J7o3UWUqhV7v91Kswn2UXPSlUB4AVwkcqhYuJ0=; b=nq/bAiZjeMBBE2s2glGQQGRARulUwvoxOXtVXTpWj/D/f+kBzJA5yutUlVsFlCp1o0 CoepQSk8Etm30n128ZimBgyq9z+N31bnVPUZ41NpAJO2AatJWdp2Eei3sOXhQ/tkdb3o uXMULbdx+GtAO8sG/YglNt5Am80iTOzw9iu3eL8hRO35dGxUUGSDMeCdrHCw0u+lKnk0 SA7AycXJdzRZUS0GJuv62TdblH8gXHCP+KBttSrhY7mGhakYr5JqH/39Lq0EKgibEjOr XCuBSJ+KlA2/pf6fBoAVH+4ZVA0A7XB1Ox9MgxKaaUSQ6U0QtkejKON9ACv09w04zeoF XZtQ== 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=iomQ1J7o3UWUqhV7v91Kswn2UXPSlUB4AVwkcqhYuJ0=; b=S7UkS1DR469GZoN/KT1DiYL9WCe40nLnAp4q7gqHu87ML8frMDvc755Bbef272A+YE DtNGNBEPJKXPkpvXmkCpgUTf8balE3gY0oNDWQjx9/8D+dyDGwUmV1aQU1X2R1YEEgCv iW2TpB3G50qn584GGt3ok6fHxZ4xvcEtV1RCoUcyJJJB2pDbUgTvGFCpflbdMuEXj1le jOQ0TUJMtBaS//3vdV85Ll7yHSMZpuq9kdCEQxXqhpqKEh2JBvqhaDc2uCtD9Q9vhuZ6 eIv18yGWJOwFwmeEliIC40CSyfuim/CmBg4ASUALPLBd/FS2W4ZESC2UCXZ5BJZKy5MY aqJg== X-Gm-Message-State: APf1xPA9tTzUglP4Wyl1Dm3wSo78N3T1VCDmrUcNuiwNVgM0Gr4Ysphu NsS6iKCcQ90VXta/fbex+wyc3Q== X-Google-Smtp-Source: AH8x227LBnk14O5LBAmQqwQZNH/Ln7a7Oq+AsgbUCsYR58jz3H8ZHy2PYfhrN6YCknnV7b7ipcLUmA== X-Received: by 10.101.98.85 with SMTP id q21mr14103528pgv.182.1519828244876; Wed, 28 Feb 2018 06:30:44 -0800 (PST) Received: from pjb1027-Latitude-E5410 ([58.227.15.43]) by smtp.gmail.com with ESMTPSA id w83sm4184282pfi.171.2018.02.28.06.30.40 (version=TLS1_2 cipher=AES128-SHA bits=128/128); Wed, 28 Feb 2018 06:30:44 -0800 (PST) Date: Wed, 28 Feb 2018 23:30:37 +0900 From: Jinbum Park To: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, kernel-hardening@lists.openwall.com Subject: [kernel-hardening] [PATCH 2/2] arm: Kconfig: Add ARCH_HAS_FORTIFY_SOURCE Message-ID: <20180228143037.GA3150@pjb1027-Latitude-E5410> MIME-Version: 1.0 Content-Disposition: inline User-Agent: Mutt/1.5.21 (2010-09-15) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20180228_063057_021924_AE147E82 X-CRM114-Status: GOOD ( 12.23 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: kstewart@linuxfoundation.org, mark.rutland@arm.com, catalin.marinas@arm.com, keescook@chromium.org, arnd@arndb.de, gregkh@linuxfoundation.org, pombredanne@nexb.co, will.deacon@arm.com, luto@amacapital.net, danielmicay@gmail.com, dsafonov@virtuozzo.com, tglx@linutronix.de Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP CONFIG_FORTIFY_SOURCE detects various overflows at compile-time. (6974f0c4555e ("include/linux/string.h: add the option of fortified string.h functions) ARCH_HAS_FORTIFY_SOURCE means that the architecture can be built and run with CONFIG_FORTIFY_SOURCE. Since ARM can be built and run with that flag like other architectures, select ARCH_HAS_FORTIFY_SOURCE as default. Signed-off-by: Jinbum Park Acked-by: Kees Cook --- arch/arm/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 7e3d535..3765336 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -7,6 +7,7 @@ config ARM select ARCH_HAS_DEBUG_VIRTUAL if MMU select ARCH_HAS_DEVMEM_IS_ALLOWED select ARCH_HAS_ELF_RANDOMIZE + select ARCH_HAS_FORTIFY_SOURCE select ARCH_HAS_SET_MEMORY select ARCH_HAS_PHYS_TO_DMA select ARCH_HAS_STRICT_KERNEL_RWX if MMU && !XIP_KERNEL