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=-9.5 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 683E7C4360C for ; Thu, 26 Sep 2019 18:29:31 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (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 1BC55222C9 for ; Thu, 26 Sep 2019 18:29:31 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="odBS6czN" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 1BC55222C9 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=chromium.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from bilbo.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 46fNkK1h5lzDqwf for ; Fri, 27 Sep 2019 04:29:29 +1000 (AEST) Authentication-Results: lists.ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=chromium.org (client-ip=2607:f8b0:4864:20::544; helo=mail-pg1-x544.google.com; envelope-from=keescook@chromium.org; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=pass (p=none dis=none) header.from=chromium.org Authentication-Results: lists.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=chromium.org header.i=@chromium.org header.b="odBS6czN"; dkim-atps=neutral Received: from mail-pg1-x544.google.com (mail-pg1-x544.google.com [IPv6:2607:f8b0:4864:20::544]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 46fN0F60YlzDqqW for ; Fri, 27 Sep 2019 03:56:29 +1000 (AEST) Received: by mail-pg1-x544.google.com with SMTP id i30so1989111pgl.0 for ; Thu, 26 Sep 2019 10:56:29 -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=RHf4/p7GM8hF/JdK/hnUnhNa2w0UzSdzkzvoSQKiPPtTI8HArHYc+QZ9R3DlIhBrSI NMlgEkR/sp9QtThXJNPNttmbbXLPeEV0r1TXTJqXbSZ/O9Ne91Nn64mjr7C4yjrW6B06 T4G0408gawFnYVOP6YEsNZvtkg46On+v/ki6R3kD/81z1Stye8r5txA5G730Rl2D1MCR H0X80EUfky6zf/Ib+DsfouRDQGfKF1BPSyRwT0eTEFQToBnaesLRIqXaxFDMkWT+0sKD CaghQcKbXktPstdxGO+UjWyGq9v5R2jRhvdltBhTsVdcdtxh3i+l3rNekjkidWM+s0TG mHJQ== X-Gm-Message-State: APjAAAWKD9jbdtWgp7HMmQ+yNxcP14Qz9TucaujVzjQtGacVJpgEIvC0 +JEJX4dbDA8tvFgKVDXDUJdRAg== 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 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> X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-arch@vger.kernel.org, linux-s390@vger.kernel.org, Michal Simek , linux-alpha@vger.kernel.org, linux-ia64@vger.kernel.org, Kees Cook , Arnd Bergmann , linux-xtensa@linux-xtensa.org, linux-kernel@vger.kernel.org, Dave Hansen , x86@kernel.org, Yoshinori Sato , Ingo Molnar , Borislav Petkov , linux-parisc@vger.kernel.org, Andy Lutomirski , "H. Peter Anvin" , Rick Edgecombe , linuxppc-dev@lists.ozlabs.org, linux-c6x-dev@linux-c6x.org Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" 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