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=-9.9 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,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 09FA5C4360C for ; Fri, 11 Oct 2019 00:13:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D75FB21929 for ; Fri, 11 Oct 2019 00:13:19 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="Vo/YkX68" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727843AbfJKANS (ORCPT ); Thu, 10 Oct 2019 20:13:18 -0400 Received: from mail-pf1-f194.google.com ([209.85.210.194]:39897 "EHLO mail-pf1-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727716AbfJKANC (ORCPT ); Thu, 10 Oct 2019 20:13:02 -0400 Received: by mail-pf1-f194.google.com with SMTP id v4so4954770pff.6 for ; Thu, 10 Oct 2019 17:13:02 -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=OvLPSIr20MO1GrkJ0OvwvGngd4/e51+GSaoElj9X+Gc=; b=Vo/YkX68H3JSVeYxOg0wgKZHM0DDpLq1uGIDRlC9At7IoYDSFTbfrL3kzgv//JSf1l wfMMq2ZZ1sw3ulG7OB/Al6Lb7yhUEHFwVbMy0hx6CDWOUEDVNEPAVOGo2TBJff56wZsX 1wJpR43jEKVUBiVd5MS1y8q4VLWL+t/un7fCg= 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=OvLPSIr20MO1GrkJ0OvwvGngd4/e51+GSaoElj9X+Gc=; b=dMQgMmckwZvlpQ+IwnJTFfZle2M6kyvJhLR7PpufVP74GbZRt/3U7CjFh6izoYm0b/ +Sk9sVy58lUog6ZaNSrx6W6ktET3Xvue9D9zBsxA5/SH5BXYaiPZ4nykoEaFDYaWK9ek 2xhaw2pICdgcwADttFKVARs23d14hWHhdQpbX8O5bu42Od5VQyq9g8zLL6rrGF2/Dzxj K/zVI5+CTXFJmdJlH3ImcQf9cDOUAhPOjROGIdDhM34w/uZAaWu6j42e2E6QrZ1/KxD2 zx2GMyiG35D1H+EcBLoYx12JCKEgSkiObW5tfrCMF71CIt/fgAYCbNfjg5Z/5d6zvd4a rEMA== X-Gm-Message-State: APjAAAVLxCpiVlLp25yqBxaB8Pj/PiuETwrQ0Q1GvkPvHKkORosqT7Rr aykWH8Lq1wB7a6UK3LIdIvc0qw== X-Google-Smtp-Source: APXvYqwcXL9IUcA1NwWjkBG6ihgZ1mTQNQKZY+myfeizvcbcy9RQ9+vXBtLYoNyG3c9FkCNmz89Vqw== X-Received: by 2002:a63:4383:: with SMTP id q125mr13830250pga.373.1570752781928; Thu, 10 Oct 2019 17:13:01 -0700 (PDT) Received: from www.outflux.net (smtp.outflux.net. [198.145.64.163]) by smtp.gmail.com with ESMTPSA id v68sm8097683pfv.47.2019.10.10.17.12.55 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 10 Oct 2019 17:12:56 -0700 (PDT) From: Kees Cook To: Borislav Petkov Cc: Kees Cook , Rick Edgecombe , Dave Hansen , Andy Lutomirski , Arnd Bergmann , Michael Ellerman , Heiko Carstens , Will Deacon , linux-arch@vger.kernel.org, linux-arm-kernel@lists.infradead.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 v2 24/29] powerpc: Move EXCEPTION_TABLE to RO_DATA segment Date: Thu, 10 Oct 2019 17:06:04 -0700 Message-Id: <20191011000609.29728-25-keescook@chromium.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20191011000609.29728-1-keescook@chromium.org> References: <20191011000609.29728-1-keescook@chromium.org> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Since the EXCEPTION_TABLE is read-only, collapse it into RO_DATA. Signed-off-by: Kees Cook --- arch/powerpc/kernel/vmlinux.lds.S | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/powerpc/kernel/vmlinux.lds.S b/arch/powerpc/kernel/vmlinux.lds.S index 4e7cec088c8b..8834220036a5 100644 --- a/arch/powerpc/kernel/vmlinux.lds.S +++ b/arch/powerpc/kernel/vmlinux.lds.S @@ -7,6 +7,7 @@ #define BSS_FIRST_SECTIONS *(.bss.prominit) #define EMITS_PT_NOTE +#define RO_EXCEPTION_TABLE_ALIGN 0 #include #include @@ -162,7 +163,6 @@ SECTIONS __stop__btb_flush_fixup = .; } #endif - EXCEPTION_TABLE(0) /* * Init sections discarded at runtime -- 2.17.1