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=-9.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT 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 736A4C4360C for ; Thu, 26 Sep 2019 17:57:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 48AA7222CC for ; Thu, 26 Sep 2019 17:57:14 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="odBS6czN" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728119AbfIZR5K (ORCPT ); Thu, 26 Sep 2019 13:57:10 -0400 Received: from mail-pg1-f193.google.com ([209.85.215.193]:37581 "EHLO mail-pg1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728101AbfIZR43 (ORCPT ); Thu, 26 Sep 2019 13:56:29 -0400 Received: by mail-pg1-f193.google.com with SMTP id c17so1970028pgg.4 for ; Thu, 26 Sep 2019 10:56:28 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=sVPOVPq0jGnDyk9BlFn1nbib25butANPcZ2psxH1XQk=; b=odBS6czNjAFbywCHRPpPNeXtF6OPc2mmJ7PZLPLZJwd6gvLuxf+a4qKWHGXqogA0yi p2vEtxVP/XOxYN9zPFrI5aP6IZ37YGa0bwxcd1Y/fvdWegAkmT28yuhfe+dV29/aNHth 17TyUbj6jzLSgZ65Pr6zSq3TqTL6Z/E1LQYkg= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=sVPOVPq0jGnDyk9BlFn1nbib25butANPcZ2psxH1XQk=; b=cH70GTjxhSpLzy2ShsIKOv20xGFcQnxQGSIkSt+pCVdp3MTR99PWHNPPuiwFHafydD 2Grk1MbysAQmlcwrNSqhW2M5y8xZm/9glAR/Vxq7V19CGAjJ6VGsaRVii+P8mDJ9Lf4N 0rZtdgXs7iQYrAFC+L7V4bJhlFBmuHdOWAXwvTn+lI+QVb1SMZvoj7E8j822FkwLZn24 UhFueqNCJyWeik3HavQYrGQYQuQMAFx7jkR1UHNvV9e2XHWjI/p5H5d+gBMj+pL5qqgz bIUgmZfhnuKhqLsH1u+ec5q1WNq0a6Fx+jCfVO7mExqeZKSrLlY/0MY32+hN9YAZWBLi yi9w== X-Gm-Message-State: APjAAAWneeRuJ/S6b5sgDaBbrIruiU9Zze/khEDQ9vFhdI2G+7HLg799 s0yNb+l5iARZYJZTzvDJ9jly2g== X-Google-Smtp-Source: APXvYqxubPgpOdgeHae/TiPTi3EhrP4iQjDpvLFArEZMN+uNbmRmza3nNTs+U0Mb+pu60jodhZwxMA== X-Received: by 2002:a17:90a:2481:: with SMTP id i1mr4939410pje.77.1569520587801; Thu, 26 Sep 2019 10:56:27 -0700 (PDT) Received: from www.outflux.net (smtp.outflux.net. [198.145.64.163]) by smtp.gmail.com with ESMTPSA id v19sm3224270pff.46.2019.09.26.10.56.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 26 Sep 2019 10:56:26 -0700 (PDT) From: Kees Cook To: Thomas Gleixner Cc: Kees Cook , Rick Edgecombe , Ingo Molnar , Borislav Petkov , "H. Peter Anvin" , Dave Hansen , Andy Lutomirski , Arnd Bergmann , linux-arch@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-alpha@vger.kernel.org, linux-ia64@vger.kernel.org, linux-s390@vger.kernel.org, linux-c6x-dev@linux-c6x.org, Yoshinori Sato , Michal Simek , linux-parisc@vger.kernel.org, linux-xtensa@linux-xtensa.org, x86@kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 18/29] arm64: Move EXCEPTION_TABLE to RO_DATA segment Date: Thu, 26 Sep 2019 10:55:51 -0700 Message-Id: <20190926175602.33098-19-keescook@chromium.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190926175602.33098-1-keescook@chromium.org> References: <20190926175602.33098-1-keescook@chromium.org> Sender: linux-parisc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-parisc@vger.kernel.org The EXCEPTION_TABLE is read-only, so collapse it into RO_DATA. Signed-off-by: Kees Cook --- arch/arm64/kernel/vmlinux.lds.S | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/arch/arm64/kernel/vmlinux.lds.S b/arch/arm64/kernel/vmlinux.lds.S index 81d94e371c95..c6ba2eee0ee8 100644 --- a/arch/arm64/kernel/vmlinux.lds.S +++ b/arch/arm64/kernel/vmlinux.lds.S @@ -5,6 +5,8 @@ * Written by Martin Mares */ +#define RO_DATA_EXCEPTION_TABLE_ALIGN 8 + #include #include #include @@ -135,8 +137,8 @@ SECTIONS . = ALIGN(SEGMENT_ALIGN); _etext = .; /* End of text section */ - RO_DATA(PAGE_SIZE) /* everything from this point to */ - EXCEPTION_TABLE(8) /* __init_begin will be marked RO NX */ + /* everything from this point to __init_begin will be marked RO NX */ + RO_DATA(PAGE_SIZE) . = ALIGN(PAGE_SIZE); idmap_pg_dir = .; -- 2.17.1