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=-14.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 03A36C433E2 for ; Mon, 7 Sep 2020 06:06:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9781B21582 for ; Mon, 7 Sep 2020 06:06:16 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="LzqN96ax"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="+z3ibFLI" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726913AbgIGGGP (ORCPT ); Mon, 7 Sep 2020 02:06:15 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50184 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726770AbgIGGGE (ORCPT ); Mon, 7 Sep 2020 02:06:04 -0400 Received: from galois.linutronix.de (Galois.linutronix.de [IPv6:2a0a:51c0:0:12e:550::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 13868C061755; Sun, 6 Sep 2020 23:06:03 -0700 (PDT) Date: Mon, 07 Sep 2020 06:05:51 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1599458752; h=from:from:sender:sender:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=720+lbsabpnluq3yu74JuQuMKRV+XYNrDwJF2T/4POA=; b=LzqN96axP07uqKujovcsSn8a1jRq1W3iaofJBdowtGDm5HaOH7QssHoOonS7uMsSP8/V4z Vy/Xs3/zwXue6JHEFu0Y7cVZ3IEEyxURXLDyVpIb6gGTJWlOqvB5lq6sAaqvO4IS5Csf/d vLTzSH5+SdawHv3pdQEbuFnLSz0cYIwSpeuTJv07Uq3j/ukFH4O9Xt2C03ORhlWQgU+7a1 iDqRyof78WkpXLJwInSUr7uezKvF3sTvvwmBLbzZ378krrdx8CVoN0Np9O/aEnjl1s4UhI Ha1tM4eCltorkT+vKWyBntpjLUXKLzGd0KLuN2NNriPO1SgjEwWw6BUKX/nEZQ== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1599458752; h=from:from:sender:sender:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=720+lbsabpnluq3yu74JuQuMKRV+XYNrDwJF2T/4POA=; b=+z3ibFLI9jBAGsxB84V3abN0QQbsMcHyyXVGW/Z2ejiG8EiWFPh5yliEtxU5f/zN4ttypw LRU/xx9qyJbOCbAw== From: "tip-bot2 for Kees Cook" Reply-to: linux-kernel@vger.kernel.org To: linux-tip-commits@vger.kernel.org Subject: [tip: core/build] arm64/build: Warn on orphan section placement Cc: Kees Cook , Ingo Molnar , Will Deacon , Nick Desaulniers , x86 , LKML In-Reply-To: <20200902025347.2504702-2-keescook@chromium.org> References: <20200902025347.2504702-2-keescook@chromium.org> MIME-Version: 1.0 Message-ID: <159945875187.20229.4753081711152443833.tip-bot2@tip-bot2> Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The following commit has been merged into the core/build branch of tip: Commit-ID: b3e5d80d0c48c0cc7bce56473672f4e6e1210910 Gitweb: https://git.kernel.org/tip/b3e5d80d0c48c0cc7bce56473672f4e6e1210910 Author: Kees Cook AuthorDate: Tue, 01 Sep 2020 19:53:43 -07:00 Committer: Ingo Molnar CommitterDate: Thu, 03 Sep 2020 10:28:35 +02:00 arm64/build: Warn on orphan section placement We don't want to depend on the linker's orphan section placement heuristics as these can vary between linkers, and may change between versions. All sections need to be explicitly handled in the linker script. With all sections now handled, enable orphan section warnings. Signed-off-by: Kees Cook Signed-off-by: Ingo Molnar Acked-by: Will Deacon Reviewed-by: Nick Desaulniers Link: https://lore.kernel.org/r/20200902025347.2504702-2-keescook@chromium.org --- arch/arm64/Makefile | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/arm64/Makefile b/arch/arm64/Makefile index 6de7f55..081144f 100644 --- a/arch/arm64/Makefile +++ b/arch/arm64/Makefile @@ -29,6 +29,10 @@ LDFLAGS_vmlinux += --fix-cortex-a53-843419 endif endif +# We never want expected sections to be placed heuristically by the +# linker. All sections should be explicitly named in the linker script. +LDFLAGS_vmlinux += $(call ld-option, --orphan-handling=warn) + ifeq ($(CONFIG_ARM64_USE_LSE_ATOMICS), y) ifneq ($(CONFIG_ARM64_LSE_ATOMICS), y) $(warning LSE atomics not supported by binutils)