From patchwork Fri Nov 4 18:39:39 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sebastian Andrzej Siewior X-Patchwork-Id: 9413109 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 21BB160585 for ; Fri, 4 Nov 2016 18:39:52 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 150712B1C8 for ; Fri, 4 Nov 2016 18:39:52 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 06A302B1C6; Fri, 4 Nov 2016 18:39:52 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 7B69E2B1C6 for ; Fri, 4 Nov 2016 18:39:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965400AbcKDSju (ORCPT ); Fri, 4 Nov 2016 14:39:50 -0400 Received: from Galois.linutronix.de ([146.0.238.70]:42139 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S964907AbcKDSju (ORCPT ); Fri, 4 Nov 2016 14:39:50 -0400 Received: from localhost ([127.0.0.1] helo=bazinga.breakpoint.cc) by Galois.linutronix.de with esmtp (Exim 4.80) (envelope-from ) id 1c2jNI-0007L9-6a; Fri, 04 Nov 2016 19:38:00 +0100 From: Sebastian Andrzej Siewior To: linux-kernel@vger.kernel.org Cc: Michal Marek , linux-kbuild@vger.kernel.org, x86@kernel.org, Al Viro , Ben Hutchings , Sven Joachim , "Austin S. Hemmelgarn" , Borislav Petkov Subject: [PATCH 2/3] scripts/has-stack-protector: add -fno-PIE Date: Fri, 4 Nov 2016 19:39:39 +0100 Message-Id: <20161104183940.30692-3-bigeasy@linutronix.de> X-Mailer: git-send-email 2.10.2 In-Reply-To: <20161104183940.30692-1-bigeasy@linutronix.de> References: <20161104183940.30692-1-bigeasy@linutronix.de> MIME-Version: 1.0 Sender: linux-kbuild-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kbuild@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Adding -no-PIE to the fstack protector check. -no-PIE was introduced before -fstack-protector so there is no need for a runtime check. Without it the build stops: |Cannot use CONFIG_CC_STACKPROTECTOR_STRONG: -fstack-protector-strong available but compiler is broken due to -mcmodel=kernel + -fPIE if -fPIE is enabled by default. Tagging it stable so it is possible to compile recent stable kernels as well. Cc: stable@vger.kernel.org Signed-off-by: Sebastian Andrzej Siewior --- scripts/gcc-x86_64-has-stack-protector.sh | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/scripts/gcc-x86_64-has-stack-protector.sh b/scripts/gcc-x86_64-has-stack-protector.sh index 973e8c141567..17867e723a51 100755 --- a/scripts/gcc-x86_64-has-stack-protector.sh +++ b/scripts/gcc-x86_64-has-stack-protector.sh @@ -1,6 +1,6 @@ #!/bin/sh -echo "int foo(void) { char X[200]; return 3; }" | $* -S -x c -c -O0 -mcmodel=kernel -fstack-protector - -o - 2> /dev/null | grep -q "%gs" +echo "int foo(void) { char X[200]; return 3; }" | $* -S -x c -c -O0 -mcmodel=kernel -fno-PIE -fstack-protector - -o - 2> /dev/null | grep -q "%gs" if [ "$?" -eq "0" ] ; then echo y else