From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on gnuweeb.org X-Spam-Level: X-Spam-Status: No, score=-6.2 required=5.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_HI,SPF_HELO_NONE, SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by gnuweeb.org (Postfix) with ESMTPS id BD3A37E374 for ; Tue, 21 Mar 2023 01:11:40 +0000 (UTC) Authentication-Results: gnuweeb.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20201202 header.b=fCpVW8xX; dkim-atps=neutral Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id D56CD618F9; Tue, 21 Mar 2023 01:11:39 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3A788C433EF; Tue, 21 Mar 2023 01:11:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1679361099; bh=ODNl9OOZ7GRaMqnxRe71E34bayxsvyWE18W1XmyJcUg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=fCpVW8xXtAjiy+lHjQ8vuRPOTZ6Yswb3wmiJ6C1gOxD4PPs80PDCRTfEjwJ7js0Fx YlJ7JABUz9owixjvDI1eym+GF2gY/WYQ1VIwnCV/j6YwfG/T1LzwsNWEwup4LMn17d ahpVCvWGsRuQpJsP8Go6DW81OsM+fcJm+lh2orRphAb/ylMtiZWexMO3iON4J8ffjI zMVGVNPfNz9g7zFgYw/AZ8znVaGfNSj8AbX9L+5lMrxiMG7tF/A7AtE6sDKqK/UQnY jHklFRT7jj9ePANeT0WFgv+tdHbSd1BrpERZNt0M7KVZcD6tqQR18KGgVqJvIRAdyk ZMnFfZR4RqYwQ== Received: by paulmck-ThinkPad-P72.home (Postfix, from userid 1000) id D1C8B1540395; Mon, 20 Mar 2023 18:11:38 -0700 (PDT) From: "Paul E. McKenney" To: linux-kernel@vger.kernel.org Cc: gwml@vger.gnuweeb.org, kernel-team@meta.com, w@lwt.eu, =?UTF-8?q?Thomas=20Wei=C3=9Fschuh?= , Willy Tarreau , "Paul E . McKenney" Subject: [PATCH nolibc 01/14] tools/nolibc: always disable stack protector for tests Date: Mon, 20 Mar 2023 18:11:24 -0700 Message-Id: <20230321011137.51837-1-paulmck@kernel.org> X-Mailer: git-send-email 2.40.0.rc2 In-Reply-To: <6a3206d0-e5cd-4990-9604-444a24a8207c@paulmck-laptop> References: <6a3206d0-e5cd-4990-9604-444a24a8207c@paulmck-laptop> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit List-Id: From: Thomas Weißschuh Stack protectors need support from libc. This support is not provided by nolibc which leads to compiler errors when stack protectors are enabled by default in a compiler: CC nolibc-test /usr/bin/ld: /tmp/ccqbHEPk.o: in function `stat': nolibc-test.c:(.text+0x1d1): undefined reference to `__stack_chk_fail' /usr/bin/ld: /tmp/ccqbHEPk.o: in function `poll.constprop.0': nolibc-test.c:(.text+0x37b): undefined reference to `__stack_chk_fail' /usr/bin/ld: /tmp/ccqbHEPk.o: in function `vfprintf.constprop.0': nolibc-test.c:(.text+0x712): undefined reference to `__stack_chk_fail' /usr/bin/ld: /tmp/ccqbHEPk.o: in function `pad_spc.constprop.0': nolibc-test.c:(.text+0x80d): undefined reference to `__stack_chk_fail' /usr/bin/ld: /tmp/ccqbHEPk.o: in function `printf': nolibc-test.c:(.text+0x8c4): undefined reference to `__stack_chk_fail' /usr/bin/ld: /tmp/ccqbHEPk.o:nolibc-test.c:(.text+0x12d4): more undefined references to `__stack_chk_fail' follow collect2: error: ld returned 1 exit status Signed-off-by: Thomas Weißschuh Signed-off-by: Willy Tarreau Signed-off-by: Paul E. McKenney --- tools/testing/selftests/nolibc/Makefile | 3 +++ 1 file changed, 3 insertions(+) diff --git a/tools/testing/selftests/nolibc/Makefile b/tools/testing/selftests/nolibc/Makefile index 8fe61d3e3cce..874d141da8c4 100644 --- a/tools/testing/selftests/nolibc/Makefile +++ b/tools/testing/selftests/nolibc/Makefile @@ -1,6 +1,8 @@ # SPDX-License-Identifier: GPL-2.0 # Makefile for nolibc tests include ../../../scripts/Makefile.include +# We need this for the "cc-option" macro. +include ../../../build/Build.include # we're in ".../tools/testing/selftests/nolibc" ifeq ($(srctree),) @@ -72,6 +74,7 @@ endif CFLAGS_s390 = -m64 CFLAGS ?= -Os -fno-ident -fno-asynchronous-unwind-tables $(CFLAGS_$(ARCH)) +CFLAGS += $(call cc-option,-fno-stack-protector) LDFLAGS := -s help: -- 2.40.0.rc2