From nobody Fri Dec 19 17:51:24 2025 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id E1FA4C43217 for ; Mon, 14 Nov 2022 11:48:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236457AbiKNLsL (ORCPT ); Mon, 14 Nov 2022 06:48:11 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41080 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236929AbiKNLr3 (ORCPT ); Mon, 14 Nov 2022 06:47:29 -0500 Received: from sin.source.kernel.org (sin.source.kernel.org [145.40.73.55]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 427C821804 for ; Mon, 14 Nov 2022 03:45:28 -0800 (PST) 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 sin.source.kernel.org (Postfix) with ESMTPS id AD35DCE0FA7 for ; Mon, 14 Nov 2022 11:45:26 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id A3B2AC43470; Mon, 14 Nov 2022 11:45:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1668426324; bh=ZL8klCP1h/76P9kKdRbQUqGgBjn+aOHuV9EO8AnyNpU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=gDBhXqESy6UCVyjpxo3+gHOdn5+SwcoEj+Qouka4izFXaIPdOuHoSpb7k+SFn8oth VXuPpZRMcCBKR4Xw+OevAnNvdq5k3eMN/i84bvYUEFHdPDd4BoFx9FtnmgrO0i3xRF ivayV7hWJ8m3iLSTe02S8hRElQjKacFRyR9IFaoD2gauyajwW1hT/MaKiV2ShRD6gO h3+tgaW552ZpfxVqw5BIYEsiDZJyWkmNMXCqtQiX7sOBj10i/5f6pWmcc9K2uBFT6o lMzmLMQTMKOFTTaa+kz3osbkQX8JW+Evh3eViaTG6NbUHImSKEWdb0N6ny77tLWAw3 uuw6XHCb0q7zQ== From: "Jiri Slaby (SUSE)" To: linux-kernel@vger.kernel.org Cc: Andi Kleen , Andi Kleen , Martin Liska , Jiri Slaby Subject: [PATCH 36/46] lib/string, lto: disable gcc LTO for string.o Date: Mon, 14 Nov 2022 12:43:34 +0100 Message-Id: <20221114114344.18650-37-jirislaby@kernel.org> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20221114114344.18650-1-jirislaby@kernel.org> References: <20221114114344.18650-1-jirislaby@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: Andi Kleen gcc can generate calls for string functions implicitly, and that assumes they exist in a non-LTOed copy. Mark string.o as LTO disabled to avoid missing symbols at link time. Signed-off-by: Andi Kleen Signed-off-by: Martin Liska Signed-off-by: Jiri Slaby --- lib/Makefile | 2 ++ 1 file changed, 2 insertions(+) diff --git a/lib/Makefile b/lib/Makefile index 59bd7c2f793a..bf72b58de5c8 100644 --- a/lib/Makefile +++ b/lib/Makefile @@ -27,6 +27,8 @@ KASAN_SANITIZE_string.o :=3D n CFLAGS_string.o +=3D -fno-stack-protector endif =20 +CFLAGS_string.o +=3D $(DISABLE_LTO_GCC) + lib-y :=3D ctype.o string.o vsprintf.o cmdline.o \ rbtree.o radix-tree.o timerqueue.o xarray.o \ maple_tree.o idr.o extable.o irq_regs.o argv_split.o \ --=20 2.38.1