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=-20.9 required=3.0 tests=BAYES_00,DKIMWL_WL_MED, 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,USER_IN_DEF_DKIM_WL 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 0BC2DC4727D for ; Tue, 29 Sep 2020 21:49:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B05112076D for ; Tue, 29 Sep 2020 21:49:06 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="VQOoXlSc" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729512AbgI2VtF (ORCPT ); Tue, 29 Sep 2020 17:49:05 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48414 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729197AbgI2Vrp (ORCPT ); Tue, 29 Sep 2020 17:47:45 -0400 Received: from mail-qk1-x74a.google.com (mail-qk1-x74a.google.com [IPv6:2607:f8b0:4864:20::74a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DEEFCC0613DE for ; Tue, 29 Sep 2020 14:47:26 -0700 (PDT) Received: by mail-qk1-x74a.google.com with SMTP id q131so3660321qke.22 for ; Tue, 29 Sep 2020 14:47:26 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=sender:date:in-reply-to:message-id:mime-version:references:subject :from:to:cc; bh=dEqcNX1Djl0IV1+V4O1jZ3zX0CSjG7hkO+H8f2GKot0=; b=VQOoXlScak0WysBr/W0lMAFEgBmf32Hfw3oXYJ6KFr0fKBu3y13ZA46qQn/qdgZK8G i7ux8V3oo0qTphW/9JBrWhu78R0GtF1wBcMFmXjLpLEc7GSsvPNid7x6lav1uJEis2a7 9W/iGpPEQWtZ88Ylf6C8QNA3xu3tblmY6b/lZ2G2WdHJgfBPHmhOTR1ICCMpX+ICACEs gkyzgzySrJUDgSqaEtM3K6Q4WXigD1N/jiQrFgmXGoYkLUA/xKM7BuINs/wO+fWF4DHc JWaw9z1iMdO3i+MVSCqHWvgzTM8qRNCbnWvbhhOBb0dwF6b5pI+bPyepJLJRhfWXJMhQ QkeA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=dEqcNX1Djl0IV1+V4O1jZ3zX0CSjG7hkO+H8f2GKot0=; b=d3d6bMLZk6IiBcVAPkPo7pux086B5LTr9doen1VCPzLDu+JgTN2DC6pzh27yM+7Sud FgIUVFWymFYak5XNyP0Egk1eyMR1iQURy3/7WsqTiqtrp7zlVbHrRRlFMeoB3nw3cZDT K/+Az4l1iGvehjmrCpkKp+fXM4uZgiNeMhG560CbUgiJh52ngQXCaYgxOamToJ9qn8zA tiI88RsjHRjCIkfPso/MbPbFnlXixEH99sXV8L6+krzCxmmzm1WR3PGKUrAHrwVvgrGz 1U0eF4UYXTLV7/jSuI56CSKnuzVYHDYjfbFZZcsfeFjw8a4tCrH00WwsUlJNMV8Hd7+W oIXA== X-Gm-Message-State: AOAM533J9nwsoSwmKiOnnDptSrhwBAfSnIw/cltqIYiSf460qc6Z44DQ Z0M1VCq+L5O+mPgu9BvidhkOIpWdy4hyavRDRuo= X-Google-Smtp-Source: ABdhPJx3IHLlEpEE6lKzgLbRoH8pUHS5aZ5bMzeasJnHs8u5b0ZHEbgeZKYJBmfQeDJ5khZeV7Cye7dg816GPppPI2c= Sender: "samitolvanen via sendgmr" X-Received: from samitolvanen1.mtv.corp.google.com ([2620:15c:201:2:f693:9fff:fef4:1b6d]) (user=samitolvanen job=sendgmr) by 2002:a0c:abc7:: with SMTP id k7mr6181365qvb.45.1601416045978; Tue, 29 Sep 2020 14:47:25 -0700 (PDT) Date: Tue, 29 Sep 2020 14:46:25 -0700 In-Reply-To: <20200929214631.3516445-1-samitolvanen@google.com> Message-Id: <20200929214631.3516445-24-samitolvanen@google.com> Mime-Version: 1.0 References: <20200929214631.3516445-1-samitolvanen@google.com> X-Mailer: git-send-email 2.28.0.709.gb0816b6eb0-goog Subject: [PATCH v4 23/29] drivers/misc/lkdtm: disable LTO for rodata.o From: Sami Tolvanen To: Masahiro Yamada , Will Deacon , Steven Rostedt Cc: Peter Zijlstra , Greg Kroah-Hartman , "Paul E. McKenney" , Kees Cook , Nick Desaulniers , clang-built-linux@googlegroups.com, kernel-hardening@lists.openwall.com, linux-arch@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kbuild@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, x86@kernel.org, Sami Tolvanen Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Disable LTO for rodata.o to allow objcopy to be used to manipulate sections. Signed-off-by: Sami Tolvanen Acked-by: Kees Cook --- drivers/misc/lkdtm/Makefile | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/misc/lkdtm/Makefile b/drivers/misc/lkdtm/Makefile index c70b3822013f..dd4c936d4d73 100644 --- a/drivers/misc/lkdtm/Makefile +++ b/drivers/misc/lkdtm/Makefile @@ -13,6 +13,7 @@ lkdtm-$(CONFIG_LKDTM) += cfi.o KASAN_SANITIZE_stackleak.o := n KCOV_INSTRUMENT_rodata.o := n +CFLAGS_REMOVE_rodata.o += $(CC_FLAGS_LTO) OBJCOPYFLAGS := OBJCOPYFLAGS_rodata_objcopy.o := \ -- 2.28.0.709.gb0816b6eb0-goog 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=-10.7 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_ADSP_CUSTOM_MED,DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, UNWANTED_LANGUAGE_BODY,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 BB4C3C4727C for ; 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Tue, 29 Sep 2020 14:47:25 -0700 (PDT) Date: Tue, 29 Sep 2020 14:46:25 -0700 In-Reply-To: <20200929214631.3516445-1-samitolvanen@google.com> Message-Id: <20200929214631.3516445-24-samitolvanen@google.com> Mime-Version: 1.0 References: <20200929214631.3516445-1-samitolvanen@google.com> X-Mailer: git-send-email 2.28.0.709.gb0816b6eb0-goog Subject: [PATCH v4 23/29] drivers/misc/lkdtm: disable LTO for rodata.o From: Sami Tolvanen To: Masahiro Yamada , Will Deacon , Steven Rostedt X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200929_174731_203815_0B3D96A3 X-CRM114-Status: GOOD ( 11.61 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-arch@vger.kernel.org, x86@kernel.org, Kees Cook , "Paul E. McKenney" , kernel-hardening@lists.openwall.com, Peter Zijlstra , Greg Kroah-Hartman , linux-kbuild@vger.kernel.org, Nick Desaulniers , linux-kernel@vger.kernel.org, clang-built-linux@googlegroups.com, Sami Tolvanen , linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Disable LTO for rodata.o to allow objcopy to be used to manipulate sections. Signed-off-by: Sami Tolvanen Acked-by: Kees Cook --- drivers/misc/lkdtm/Makefile | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/misc/lkdtm/Makefile b/drivers/misc/lkdtm/Makefile index c70b3822013f..dd4c936d4d73 100644 --- a/drivers/misc/lkdtm/Makefile +++ b/drivers/misc/lkdtm/Makefile @@ -13,6 +13,7 @@ lkdtm-$(CONFIG_LKDTM) += cfi.o KASAN_SANITIZE_stackleak.o := n KCOV_INSTRUMENT_rodata.o := n +CFLAGS_REMOVE_rodata.o += $(CC_FLAGS_LTO) OBJCOPYFLAGS := OBJCOPYFLAGS_rodata_objcopy.o := \ -- 2.28.0.709.gb0816b6eb0-goog _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel 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=-20.9 required=3.0 tests=BAYES_00,DKIMWL_WL_MED, 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,USER_IN_DEF_DKIM_WL 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 D42CEC4727C for ; Tue, 29 Sep 2020 21:50:31 +0000 (UTC) Received: from mother.openwall.net (mother.openwall.net [195.42.179.200]) by mail.kernel.org (Postfix) with SMTP id 009FB2076D for ; Tue, 29 Sep 2020 21:50:30 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="VQOoXlSc" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 009FB2076D Authentication-Results: mail.kernel.org; dmarc=fail (p=reject dis=none) header.from=google.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=kernel-hardening-return-20053-kernel-hardening=archiver.kernel.org@lists.openwall.com Received: (qmail 1902 invoked by uid 550); 29 Sep 2020 21:47:38 -0000 Mailing-List: contact kernel-hardening-help@lists.openwall.com; run by ezmlm Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-ID: Received: (qmail 1760 invoked from network); 29 Sep 2020 21:47:37 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=sender:date:in-reply-to:message-id:mime-version:references:subject :from:to:cc; bh=dEqcNX1Djl0IV1+V4O1jZ3zX0CSjG7hkO+H8f2GKot0=; b=VQOoXlScak0WysBr/W0lMAFEgBmf32Hfw3oXYJ6KFr0fKBu3y13ZA46qQn/qdgZK8G i7ux8V3oo0qTphW/9JBrWhu78R0GtF1wBcMFmXjLpLEc7GSsvPNid7x6lav1uJEis2a7 9W/iGpPEQWtZ88Ylf6C8QNA3xu3tblmY6b/lZ2G2WdHJgfBPHmhOTR1ICCMpX+ICACEs gkyzgzySrJUDgSqaEtM3K6Q4WXigD1N/jiQrFgmXGoYkLUA/xKM7BuINs/wO+fWF4DHc JWaw9z1iMdO3i+MVSCqHWvgzTM8qRNCbnWvbhhOBb0dwF6b5pI+bPyepJLJRhfWXJMhQ QkeA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=dEqcNX1Djl0IV1+V4O1jZ3zX0CSjG7hkO+H8f2GKot0=; b=E4oLfvvmTXdl6YgMiWVjrB5g4dESVatrBKvDxA4dk0MSzI7vysmqzhgSeGHitUvESh ygyRAFMWcI8yWc4chadQ+zYYEU3hN3h5S8s3v3I8IFZqKBKCy9vd/AIsJgDGqAifYT1D JzN8HZn2nS/SivQyq+9fac7/oTRFKClaMo3Zr3G7brGyzBZVg1x970p8KkB2x3jDmeTN NBJzAhHeEmLU7ajjIp00R3EERiu3cUjN23ZqyyRrF6dScX2ANU9Pd0jdRJqvlDd6JDgJ d47BjTiJCwfnFIOS1QEfxPBENJZ/1NxOH/G0zA4kb1isGfq4kUmF29u/ys10+O+wMXcc GAFA== X-Gm-Message-State: AOAM533IWK1a9W/MKEyr0jUz1M1IMRdb4Gk88NDaTpd1wiTXU+LhkvLF x5NRR/gu87ZSgFAFZXKR6yfp3JSqEaifJFd//jo= X-Google-Smtp-Source: ABdhPJx3IHLlEpEE6lKzgLbRoH8pUHS5aZ5bMzeasJnHs8u5b0ZHEbgeZKYJBmfQeDJ5khZeV7Cye7dg816GPppPI2c= Sender: "samitolvanen via sendgmr" X-Received: from samitolvanen1.mtv.corp.google.com ([2620:15c:201:2:f693:9fff:fef4:1b6d]) (user=samitolvanen job=sendgmr) by 2002:a0c:abc7:: with SMTP id k7mr6181365qvb.45.1601416045978; Tue, 29 Sep 2020 14:47:25 -0700 (PDT) Date: Tue, 29 Sep 2020 14:46:25 -0700 In-Reply-To: <20200929214631.3516445-1-samitolvanen@google.com> Message-Id: <20200929214631.3516445-24-samitolvanen@google.com> Mime-Version: 1.0 References: <20200929214631.3516445-1-samitolvanen@google.com> X-Mailer: git-send-email 2.28.0.709.gb0816b6eb0-goog Subject: [PATCH v4 23/29] drivers/misc/lkdtm: disable LTO for rodata.o From: Sami Tolvanen To: Masahiro Yamada , Will Deacon , Steven Rostedt Cc: Peter Zijlstra , Greg Kroah-Hartman , "Paul E. McKenney" , Kees Cook , Nick Desaulniers , clang-built-linux@googlegroups.com, kernel-hardening@lists.openwall.com, linux-arch@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kbuild@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, x86@kernel.org, Sami Tolvanen Content-Type: text/plain; charset="UTF-8" Disable LTO for rodata.o to allow objcopy to be used to manipulate sections. Signed-off-by: Sami Tolvanen Acked-by: Kees Cook --- drivers/misc/lkdtm/Makefile | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/misc/lkdtm/Makefile b/drivers/misc/lkdtm/Makefile index c70b3822013f..dd4c936d4d73 100644 --- a/drivers/misc/lkdtm/Makefile +++ b/drivers/misc/lkdtm/Makefile @@ -13,6 +13,7 @@ lkdtm-$(CONFIG_LKDTM) += cfi.o KASAN_SANITIZE_stackleak.o := n KCOV_INSTRUMENT_rodata.o := n +CFLAGS_REMOVE_rodata.o += $(CC_FLAGS_LTO) OBJCOPYFLAGS := OBJCOPYFLAGS_rodata_objcopy.o := \ -- 2.28.0.709.gb0816b6eb0-goog