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 AA687C43461 for ; Mon, 7 Sep 2020 06:06:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 57EE12145D for ; Mon, 7 Sep 2020 06:06:14 +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="KgUgUtcH"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="tCcM3bYi" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726855AbgIGGGN (ORCPT ); Mon, 7 Sep 2020 02:06:13 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50180 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725823AbgIGGGE (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 05811C061574; Sun, 6 Sep 2020 23:06:03 -0700 (PDT) Date: Mon, 07 Sep 2020 06:05:50 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1599458751; 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=yPT9oQPC21g6xntCJxn95T6nJT9qkoIKzRBPckz2sAo=; b=KgUgUtcHunPYvjQC133vlThRdEQ31cM92foL2z0ffrVa7vBZSz9S9lR1GpPop/UbX2+kOw ObLUOq19rEX+Wb04Xngyx6vrRRz6AECFeM5diaoePty+bUzWH8l8XqfwnzM6ZOcvBv3TJw 2Wh6LhPqkRggZkxh8FNDUDr3D4SJtwPaEYcNvEynhgTl92wkqQvJtUuZ/jQTlAhuktJNvR ZAKxqMPfL5Zjdh47Bp1UMRbUdABnGAtfrKK5tczCykm9Kx1QZGvQYPLuIKv2XTG7hkU1ax Mau8dW+8ZiBIfWjuOMZtd0ToptXRUr/a28VbQFXPI/KfJ2TYtJHgtBNxpAL1Jw== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1599458751; 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=yPT9oQPC21g6xntCJxn95T6nJT9qkoIKzRBPckz2sAo=; b=tCcM3bYiSzG4sSOji7VRR/Zjq/LgOY4BpXMfqvT3umyG6BUzfCpNzx8dOpu2mGn7Z69Ws4 fFRA+N3R0YiGe4Dg== From: "tip-bot2 for Kees Cook" Reply-to: linux-kernel@vger.kernel.org To: linux-tip-commits@vger.kernel.org Subject: [tip: core/build] x86/build: Warn on orphan section placement Cc: Kees Cook , Ingo Molnar , Nick Desaulniers , x86 , LKML In-Reply-To: <20200902025347.2504702-5-keescook@chromium.org> References: <20200902025347.2504702-5-keescook@chromium.org> MIME-Version: 1.0 Message-ID: <159945875070.20229.5266595565501285727.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: 83109d5d5fba7abf362f5a443c9f4c4ea10bbc8d Gitweb: https://git.kernel.org/tip/83109d5d5fba7abf362f5a443c9f4c4ea10bbc8d Author: Kees Cook AuthorDate: Tue, 01 Sep 2020 19:53:46 -07:00 Committer: Ingo Molnar CommitterDate: Thu, 03 Sep 2020 10:28:36 +02:00 x86/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. Now that all sections are explicitly handled, enable orphan section warnings. Signed-off-by: Kees Cook Signed-off-by: Ingo Molnar Reviewed-by: Nick Desaulniers Link: https://lore.kernel.org/r/20200902025347.2504702-5-keescook@chromium.org --- arch/x86/Makefile | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/x86/Makefile b/arch/x86/Makefile index 4346ffb..154259f 100644 --- a/arch/x86/Makefile +++ b/arch/x86/Makefile @@ -209,6 +209,10 @@ ifdef CONFIG_X86_64 LDFLAGS_vmlinux += -z max-page-size=0x200000 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) + archscripts: scripts_basic $(Q)$(MAKE) $(build)=arch/x86/tools relocs