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=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,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 8F8BAC7618F for ; Mon, 15 Jul 2019 14:49:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 596A4212F5 for ; Mon, 15 Jul 2019 14:49:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1563202167; bh=asAiYr2CYWOqMAWm0D67icb5YqzuE7xvN5a2k2xkOUs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=P92xTbCDY3uCeFv+g697oFVdkoPhge17yZAk0fh42ybh93OOS5mu5hb2B0qby4Lop YRNnRaQ74b2quWY3vxQbRtoS3kFyfoUKdh6lJko9pidVOrEBpD5dQ2qW2zaU8/ktnL fAivEXkXqD4YIt1sQbCfB80K+3aFRA/3OjpPfJjs= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2392336AbfGOOsQ (ORCPT ); Mon, 15 Jul 2019 10:48:16 -0400 Received: from mail.kernel.org ([198.145.29.99]:44800 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2392321AbfGOOsL (ORCPT ); Mon, 15 Jul 2019 10:48:11 -0400 Received: from sasha-vm.mshome.net (unknown [73.61.17.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 7F33B2086C; Mon, 15 Jul 2019 14:48:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1563202090; bh=asAiYr2CYWOqMAWm0D67icb5YqzuE7xvN5a2k2xkOUs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=arUg7tHP5MUwVdnjYVvc18axUWjTwpFasLNd509rT7e4o8sRzQO8qC0vQ72bMF6TJ BBvfTshAJIUsw1Ii++j6I/PLQlPEVjSvMH0QDXrRQG5ucCa7+VnY+ODW0EP88iXp8e G1bLCSUqnyXkYPkBklcuBzzfCf6lao204zrsDq3I= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Masahiro Yamada , Thomas Gleixner , "H. Peter Anvin" , Borislav Petkov , Sasha Levin Subject: [PATCH AUTOSEL 4.4 42/53] x86/build: Add 'set -e' to mkcapflags.sh to delete broken capflags.c Date: Mon, 15 Jul 2019 10:45:24 -0400 Message-Id: <20190715144535.11636-42-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190715144535.11636-1-sashal@kernel.org> References: <20190715144535.11636-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Masahiro Yamada [ Upstream commit bc53d3d777f81385c1bb08b07bd1c06450ecc2c1 ] Without 'set -e', shell scripts continue running even after any error occurs. The missed 'set -e' is a typical bug in shell scripting. For example, when a disk space shortage occurs while this script is running, it actually ends up with generating a truncated capflags.c. Yet, mkcapflags.sh continues running and exits with 0. So, the build system assumes it has succeeded. It will not be re-generated in the next invocation of Make since its timestamp is newer than that of any of the source files. Add 'set -e' so that any error in this script is caught and propagated to the build system. Since 9c2af1c7377a ("kbuild: add .DELETE_ON_ERROR special target"), make automatically deletes the target on any failure. So, the broken capflags.c will be deleted automatically. Signed-off-by: Masahiro Yamada Signed-off-by: Thomas Gleixner Cc: "H. Peter Anvin" Cc: Borislav Petkov Link: https://lkml.kernel.org/r/20190625072622.17679-1-yamada.masahiro@socionext.com Signed-off-by: Sasha Levin --- arch/x86/kernel/cpu/mkcapflags.sh | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/x86/kernel/cpu/mkcapflags.sh b/arch/x86/kernel/cpu/mkcapflags.sh index 6988c74409a8..711b74e0e623 100644 --- a/arch/x86/kernel/cpu/mkcapflags.sh +++ b/arch/x86/kernel/cpu/mkcapflags.sh @@ -3,6 +3,8 @@ # Generate the x86_cap/bug_flags[] arrays from include/asm/cpufeatures.h # +set -e + IN=$1 OUT=$2 -- 2.20.1