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=-17.6 required=3.0 tests=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 69ECFC433DF for ; Wed, 24 Jun 2020 20:34:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 453FC2081A for ; Wed, 24 Jun 2020 20:34:15 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="D5jMBEz7" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2406659AbgFXUeN (ORCPT ); Wed, 24 Jun 2020 16:34:13 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50614 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2406550AbgFXUd0 (ORCPT ); Wed, 24 Jun 2020 16:33:26 -0400 Received: from mail-qk1-x749.google.com (mail-qk1-x749.google.com [IPv6:2607:f8b0:4864:20::749]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0993DC06179A for ; Wed, 24 Jun 2020 13:33:26 -0700 (PDT) Received: by mail-qk1-x749.google.com with SMTP id i62so2469570qkd.18 for ; Wed, 24 Jun 2020 13:33:26 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=date:in-reply-to:message-id:mime-version:references:subject:from:to :cc; bh=wwQ0FnciQOJFFrw9pZwNR1174M1Ii6KWK+Cwx1DZR0E=; b=D5jMBEz7Lm5U+UfoGelxUyQqWOYc6Z+dLXzaDR1SoyT3D0mSDtKUxokHJAk6ca9TzV 4mueVog2jOcmVS+jVjlFOcthTwG/yiHbkE9KBrSSXn5wKv43C8TlR+Cgbt0KoNrOQO9O owGlgSWarEMzSBvxtlWzfcQXQKNdv2ZE3V35XOQO9JLobrLz8Yl2Oqg2ofnVQSUcX7cV WTnphEXJJam/USPXIaROhEV6UnjgXvvwGpug+fLsCxrQtPsDK3qYgboxAvYEWoFvxtr6 m6eXCYH8PEMH1MvefhDCIQOQ3Zw+2VmFPtKpPIPHPwUqkF/2Zm2/4J+lIul1mO034S+9 DBng== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=wwQ0FnciQOJFFrw9pZwNR1174M1Ii6KWK+Cwx1DZR0E=; b=l0/YMajXrmz7qLudnKbgjfPKaIYA7bkkVxhvXm8gup/h85AvQ9kZFB5bfPV+314gtF g4whtvJKt5vl4rRnQLvo+iHTEJt1h5zX/kzld0WbvrC7JGpfj2dbzKdJM5EpwQv26AiK 9n9udnlDSp+Y8KC/WYsWm1qlTbE0tiUrxsAOGvQ2ZaRslWqY01DBMGDG2OxdFkznEUM5 ILZ8bTzz8DnuHiE0ZxEo5jtBMoak6EXzMjb6lxpqDQAY/7z5swencwhVFdjx1GF8kSGu MUVidakxrtN96C2L2alzg72nIC5UVG8qrsHu8x3CkUaU2FNtKwN37HkNYwPI6qonGHEW VRvQ== X-Gm-Message-State: AOAM531KUQ0b1wbJHZgf8i8Eg9HXGqmpvxZQB5VrIiWAE8R3iH1P7huF CRsx9+ne/iP6OCiEq+O18G47TncC4xGFGGZtdPU= X-Google-Smtp-Source: ABdhPJxdY2l3AI8wfRrd83iTVnOoqT0z2xypmyGa8SBbcpKlWTHBGxwu1psE5fER0U56oerLL9wNd1erMNW/Ru+uB28= X-Received: by 2002:ad4:4cc1:: with SMTP id i1mr3207160qvz.249.1593030805093; Wed, 24 Jun 2020 13:33:25 -0700 (PDT) Date: Wed, 24 Jun 2020 13:31:53 -0700 In-Reply-To: <20200624203200.78870-1-samitolvanen@google.com> Message-Id: <20200624203200.78870-16-samitolvanen@google.com> Mime-Version: 1.0 References: <20200624203200.78870-1-samitolvanen@google.com> X-Mailer: git-send-email 2.27.0.212.ge8ba1cc988-goog Subject: [PATCH 15/22] drivers/misc/lkdtm: disable LTO for rodata.o From: Sami Tolvanen To: Masahiro Yamada , Will Deacon Cc: 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" Sender: linux-kernel-owner@vger.kernel.org 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 := \ -- 2.27.0.212.ge8ba1cc988-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=-7.2 required=3.0 tests=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 233DFC433DF for ; Wed, 24 Jun 2020 20:37:57 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (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 AED34206C0 for ; Wed, 24 Jun 2020 20:37:56 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="Ltm2VRIh"; dkim=fail reason="signature verification failed" (2048-bit key) header.d=google.com header.i=@google.com header.b="D5jMBEz7" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org AED34206C0 Authentication-Results: mail.kernel.org; dmarc=fail (p=reject dis=none) header.from=google.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:To:From:Subject:References:Mime-Version:Message-Id: In-Reply-To:Date:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=TEW89zZrjb485Wz35YxuTPPfR1hX570RAHEIKy17bUs=; b=Ltm2VRIhR+A0E9qO6e0Bkd+yv Mt3G2wHB3NYKGNZaER6CuCdl+Uk+RXrnQtf0K1Idie7RNcmiNNCU1p4PhA72bMVRCbkGdFDGr/lOq uQDztQc6OwFCvE2hHrCO2nK6BdS5eAovz74pegaXoaVUj8X1u4CEUxp0iKgaWVId2lXKeqw+uyoXO 5o0hcP0zT1TAt379llbIsvRY4mm0ussa54mBpOR1dBrBLAl7r5ArHcBeXtFqRA4DT4/33pMcotbHw pT5Y4jZfP0PzJKv+B/+TcB0YOBPRQTcuNBlq+2w09IvY3zdyFo0RVsS62uggC45kJlQOOfQ5jBMfo tLc4FnnCA==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1joC7N-00006R-FB; Wed, 24 Jun 2020 20:35:37 +0000 Received: from mail-qv1-xf4a.google.com ([2607:f8b0:4864:20::f4a]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1joC5I-0007DN-CT for linux-arm-kernel@lists.infradead.org; Wed, 24 Jun 2020 20:33:29 +0000 Received: by mail-qv1-xf4a.google.com with SMTP id q5so2472918qvp.23 for ; Wed, 24 Jun 2020 13:33:26 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=date:in-reply-to:message-id:mime-version:references:subject:from:to :cc; bh=wwQ0FnciQOJFFrw9pZwNR1174M1Ii6KWK+Cwx1DZR0E=; b=D5jMBEz7Lm5U+UfoGelxUyQqWOYc6Z+dLXzaDR1SoyT3D0mSDtKUxokHJAk6ca9TzV 4mueVog2jOcmVS+jVjlFOcthTwG/yiHbkE9KBrSSXn5wKv43C8TlR+Cgbt0KoNrOQO9O owGlgSWarEMzSBvxtlWzfcQXQKNdv2ZE3V35XOQO9JLobrLz8Yl2Oqg2ofnVQSUcX7cV WTnphEXJJam/USPXIaROhEV6UnjgXvvwGpug+fLsCxrQtPsDK3qYgboxAvYEWoFvxtr6 m6eXCYH8PEMH1MvefhDCIQOQ3Zw+2VmFPtKpPIPHPwUqkF/2Zm2/4J+lIul1mO034S+9 DBng== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=wwQ0FnciQOJFFrw9pZwNR1174M1Ii6KWK+Cwx1DZR0E=; b=PfmT6YcS8aRm97HqMPB6nwXCq8A4JYKCOPZ1SmnGdVy92KrRD+hnrxFSDC1MFlyoZS 1UxxbFybwHT9jH4bD8S3gRJXMFz3fwgfvV7fI319EO+fx24qhoSkZjHIcTKDPDAV0qHq qlcI3LjttcJrEyjSnICCudxuhM6SyyqgxF+qzgAjwVXoZfVhrGz2MT1dE2jkyaUyhqsH 0Rn3Vg5K2Ifcu9VYhzVbRhIpv3pIPszCedVHT8hQ93SwBEiUXoGVny9EaK83Qkgpyugq wuUE0F8U7JLQEGhTJ8ATgmeng7b5IPUj4x2USZazuJ+WmvAyF7vYoiC76giT2moTk/jc gK0w== X-Gm-Message-State: AOAM532V75fuFk0FehUwOdnfsIh3UyBOmMdYGs751T/GzR30D98ODOsR y1pfsNeN7xOWGFGq/xHZGJkqRAyDq2q8TfLdGhk= X-Google-Smtp-Source: ABdhPJxdY2l3AI8wfRrd83iTVnOoqT0z2xypmyGa8SBbcpKlWTHBGxwu1psE5fER0U56oerLL9wNd1erMNW/Ru+uB28= X-Received: by 2002:ad4:4cc1:: with SMTP id i1mr3207160qvz.249.1593030805093; Wed, 24 Jun 2020 13:33:25 -0700 (PDT) Date: Wed, 24 Jun 2020 13:31:53 -0700 In-Reply-To: <20200624203200.78870-1-samitolvanen@google.com> Message-Id: <20200624203200.78870-16-samitolvanen@google.com> Mime-Version: 1.0 References: <20200624203200.78870-1-samitolvanen@google.com> X-Mailer: git-send-email 2.27.0.212.ge8ba1cc988-goog Subject: [PATCH 15/22] drivers/misc/lkdtm: disable LTO for rodata.o From: Sami Tolvanen To: Masahiro Yamada , Will Deacon 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, 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 := \ -- 2.27.0.212.ge8ba1cc988-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=-17.6 required=3.0 tests=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,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 800E9C433E0 for ; Wed, 24 Jun 2020 20:35:28 +0000 (UTC) Received: from mother.openwall.net (mother.openwall.net [195.42.179.200]) by mail.kernel.org (Postfix) with SMTP id D8D9420578 for ; Wed, 24 Jun 2020 20:35:27 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="D5jMBEz7" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D8D9420578 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-19123-kernel-hardening=archiver.kernel.org@lists.openwall.com Received: (qmail 1625 invoked by uid 550); 24 Jun 2020 20:33:37 -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 1538 invoked from network); 24 Jun 2020 20:33:36 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=date:in-reply-to:message-id:mime-version:references:subject:from:to :cc; bh=wwQ0FnciQOJFFrw9pZwNR1174M1Ii6KWK+Cwx1DZR0E=; b=D5jMBEz7Lm5U+UfoGelxUyQqWOYc6Z+dLXzaDR1SoyT3D0mSDtKUxokHJAk6ca9TzV 4mueVog2jOcmVS+jVjlFOcthTwG/yiHbkE9KBrSSXn5wKv43C8TlR+Cgbt0KoNrOQO9O owGlgSWarEMzSBvxtlWzfcQXQKNdv2ZE3V35XOQO9JLobrLz8Yl2Oqg2ofnVQSUcX7cV WTnphEXJJam/USPXIaROhEV6UnjgXvvwGpug+fLsCxrQtPsDK3qYgboxAvYEWoFvxtr6 m6eXCYH8PEMH1MvefhDCIQOQ3Zw+2VmFPtKpPIPHPwUqkF/2Zm2/4J+lIul1mO034S+9 DBng== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=wwQ0FnciQOJFFrw9pZwNR1174M1Ii6KWK+Cwx1DZR0E=; b=kyizcFva3gU2SXhLB+mmXwlkwt72ex2NOlbKk1EwGeTvVxZDCNyZ2ReJ+0leP3paZn ytgOkIuJX03srY5C4C3mWtHOs8MSanIVOslbBXuZ+8tU73fb/tN0qrqvhvvJEnL+Ia+S fvvtVOsPgH4sw7skbZRyGHQaiU2uY7hFJr4XgJnjJ9UgtH09szHLsJmtXGnsGYvG7MRV K/gdgHiJVmwBMoI+/gf+1gCuZx5XRkjvvPL3hzqco71gpaLafhEidwiwuR9cUXYw7A43 zPfmYXfXRG9n1DUliFBhcYgNt7LTkk8kRDI4JDCXHL/iP13hnWriCsIeYBeGPdtPs/Qu QkLw== X-Gm-Message-State: AOAM531qRFKGKkdUqhL8UrREyauYSxLvXxbfBEPR59ZHN2XU6ftSm5Q2 XuLAK4o0Z95d6UqApyNgsNJX7QudPC0scZBJaik= X-Google-Smtp-Source: ABdhPJxdY2l3AI8wfRrd83iTVnOoqT0z2xypmyGa8SBbcpKlWTHBGxwu1psE5fER0U56oerLL9wNd1erMNW/Ru+uB28= X-Received: by 2002:ad4:4cc1:: with SMTP id i1mr3207160qvz.249.1593030805093; Wed, 24 Jun 2020 13:33:25 -0700 (PDT) Date: Wed, 24 Jun 2020 13:31:53 -0700 In-Reply-To: <20200624203200.78870-1-samitolvanen@google.com> Message-Id: <20200624203200.78870-16-samitolvanen@google.com> Mime-Version: 1.0 References: <20200624203200.78870-1-samitolvanen@google.com> X-Mailer: git-send-email 2.27.0.212.ge8ba1cc988-goog Subject: [PATCH 15/22] drivers/misc/lkdtm: disable LTO for rodata.o From: Sami Tolvanen To: Masahiro Yamada , Will Deacon Cc: 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 := \ -- 2.27.0.212.ge8ba1cc988-goog