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=-11.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED,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 462A7C43381 for ; Fri, 22 Mar 2019 12:24:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 12A5420685 for ; Fri, 22 Mar 2019 12:24:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1553257443; bh=DQUDU/wicvfblSmKO3y8YDpRo/lM3C0d0nuKwJLqwio=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=2LZe0Zy9zmlW7l5ogABvKa375c0bARqAbEyflFn6fLjyMh6lLObp0uHZCZZtXyngL mWbICqEYvIOATiSfNfmVLOQjXO0zodv2/wIYo2Wg2FNAWGTi8zKGCNbHIfTdnWBR7G Fp12Q//LxCwsGmAohw9JsIDr5ZzgPaQgkg10y77g= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2391222AbfCVMYB (ORCPT ); Fri, 22 Mar 2019 08:24:01 -0400 Received: from mail.kernel.org ([198.145.29.99]:35642 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2391190AbfCVMX7 (ORCPT ); Fri, 22 Mar 2019 08:23:59 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 8ACE02054F; Fri, 22 Mar 2019 12:23:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1553257439; bh=DQUDU/wicvfblSmKO3y8YDpRo/lM3C0d0nuKwJLqwio=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=iAiaZxjPy4D9EjCyMOPEyF5VGEAmiVkoNBxA1+81g/xD6FepPTR1pnrWW0K5dVbKL cmnlM4bnCqn+Viriz34vv0IiDidXuP3bd9buyx8AkPx/Uh8MQJIWoCW1FYFBh7ft2z +84Cwn8s9V9yPMMjkkPAco0bEzAFZbunl70VfbK0= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Nick Desaulniers , Dmitry Golovin , Sedat Dilek , Josh Poimboeuf , Thomas Gleixner , Peter Zijlstra Subject: [PATCH 5.0 199/238] x86/unwind/orc: Fix ORC unwind table alignment Date: Fri, 22 Mar 2019 12:16:58 +0100 Message-Id: <20190322111309.936738551@linuxfoundation.org> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190322111258.383569278@linuxfoundation.org> References: <20190322111258.383569278@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review X-Patchwork-Hint: ignore MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 5.0-stable review patch. If anyone has any objections, please let me know. ------------------ From: Josh Poimboeuf commit f76a16adc485699f95bb71fce114f97c832fe664 upstream. The .orc_unwind section is a packed array of 6-byte structs. It's currently aligned to 6 bytes, which is causing warnings in the LLD linker. Six isn't a power of two, so it's not a valid alignment value. The actual alignment doesn't matter much because it's an array of packed structs. An alignment of two is sufficient. In reality it always gets aligned to four bytes because it comes immediately after the 4-byte-aligned .orc_unwind_ip section. Fixes: ee9f8fce9964 ("x86/unwind: Add the ORC unwinder") Reported-by: Nick Desaulniers Reported-by: Dmitry Golovin Reported-by: Sedat Dilek Signed-off-by: Josh Poimboeuf Signed-off-by: Thomas Gleixner Tested-by: Sedat Dilek Cc: Peter Zijlstra Cc: stable@vger.kernel.org Link: https://github.com/ClangBuiltLinux/linux/issues/218 Link: https://lkml.kernel.org/r/d55027ee95fe73e952dcd8be90aebd31b0095c45.1551892041.git.jpoimboe@redhat.com Signed-off-by: Greg Kroah-Hartman --- include/asm-generic/vmlinux.lds.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/include/asm-generic/vmlinux.lds.h +++ b/include/asm-generic/vmlinux.lds.h @@ -733,7 +733,7 @@ KEEP(*(.orc_unwind_ip)) \ __stop_orc_unwind_ip = .; \ } \ - . = ALIGN(6); \ + . = ALIGN(2); \ .orc_unwind : AT(ADDR(.orc_unwind) - LOAD_OFFSET) { \ __start_orc_unwind = .; \ KEEP(*(.orc_unwind)) \