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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 02E0AC433FE for ; Wed, 13 Apr 2022 13:50:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235988AbiDMNxR (ORCPT ); Wed, 13 Apr 2022 09:53:17 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60648 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235977AbiDMNwa (ORCPT ); Wed, 13 Apr 2022 09:52:30 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AE2101FCFF for ; Wed, 13 Apr 2022 06:50:07 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 62B31B824E7 for ; Wed, 13 Apr 2022 13:50:06 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 17378C385A3; Wed, 13 Apr 2022 13:50:01 +0000 (UTC) From: Catalin Marinas To: Andrew Morton , Christoph Hellwig , Lennart Poettering , =?UTF-8?q?Zbigniew=20J=C4=99drzejewski-Szmek?= Cc: Will Deacon , Alexander Viro , Eric Biederman , Kees Cook , Szabolcs Nagy , Mark Brown , Jeremy Linton , Topi Miettinen , linux-mm@kvack.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-abi-devel@lists.sourceforge.net Subject: [PATCH RFC 4/4] arm64: Select ARCH_ENABLE_DENY_WRITE_EXEC Date: Wed, 13 Apr 2022 14:49:46 +0100 Message-Id: <20220413134946.2732468-5-catalin.marinas@arm.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20220413134946.2732468-1-catalin.marinas@arm.com> References: <20220413134946.2732468-1-catalin.marinas@arm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This will allow the DENY_WRITE_EXEC personality flag to prevent creating a PROT_EXEC mapping that is or was also PROT_WRITE. Signed-off-by: Catalin Marinas Cc: Will Deacon --- arch/arm64/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 57c4c995965f..6cbdc8294337 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -13,6 +13,7 @@ config ARM64 select ARCH_BINFMT_ELF_EXTRA_PHDRS select ARCH_BINFMT_ELF_STATE select ARCH_CORRECT_STACKTRACE_ON_KRETPROBE + select ARCH_ENABLE_DENY_WRITE_EXEC select ARCH_ENABLE_HUGEPAGE_MIGRATION if HUGETLB_PAGE && MIGRATION select ARCH_ENABLE_MEMORY_HOTPLUG select ARCH_ENABLE_MEMORY_HOTREMOVE