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=-20.2 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, 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 52DE2C433F5 for ; Mon, 20 Sep 2021 17:21:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3702061401 for ; Mon, 20 Sep 2021 17:21:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1343693AbhITRW0 (ORCPT ); Mon, 20 Sep 2021 13:22:26 -0400 Received: from mail.kernel.org ([198.145.29.99]:48640 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1348825AbhITRU0 (ORCPT ); Mon, 20 Sep 2021 13:20:26 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 15C46613E6; Mon, 20 Sep 2021 17:00:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1632157233; bh=e7iKw00Iyzn8j8D3IFC/qqlpaK67JS53s9qBptL+f20=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=2kk+fNfenfNKttyjwaU9aDfDbPIDomwYnwTdXauq2tI+sA3qCaxC4E/uMNM4/TJtN XnqOcRu+AG01Xk9XagMKxjuxFIqSKyBb7cj2sQZLjOKuJbsEmHl2bkUQXOZp4Cgrxt SnECONwpuHXxrELUBDtMlhQJJGKaSTyAv4CSQONk= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Nicolas Pitre , David Heidelberg , Arnd Bergmann , "Russell King (Oracle)" Subject: [PATCH 4.14 115/217] ARM: 9105/1: atags_to_fdt: dont warn about stack size Date: Mon, 20 Sep 2021 18:42:16 +0200 Message-Id: <20210920163928.549909568@linuxfoundation.org> X-Mailer: git-send-email 2.33.0 In-Reply-To: <20210920163924.591371269@linuxfoundation.org> References: <20210920163924.591371269@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: David Heidelberg commit b30d0289de72c62516df03fdad8d53f552c69839 upstream. The merge_fdt_bootargs() function by definition consumes more than 1024 bytes of stack because it has a 1024 byte command line on the stack, meaning that we always get a warning when building this file: arch/arm/boot/compressed/atags_to_fdt.c: In function 'merge_fdt_bootargs': arch/arm/boot/compressed/atags_to_fdt.c:98:1: warning: the frame size of 1032 bytes is larger than 1024 bytes [-Wframe-larger-than=] However, as this is the decompressor and we know that it has a very shallow call chain, and we do not actually risk overflowing the kernel stack at runtime here. This just shuts up the warning by disabling the warning flag for this file. Tested on Nexus 7 2012 builds. Acked-by: Nicolas Pitre Signed-off-by: David Heidelberg Signed-off-by: Arnd Bergmann Cc: Signed-off-by: Russell King (Oracle) Signed-off-by: Greg Kroah-Hartman --- arch/arm/boot/compressed/Makefile | 2 ++ 1 file changed, 2 insertions(+) --- a/arch/arm/boot/compressed/Makefile +++ b/arch/arm/boot/compressed/Makefile @@ -87,6 +87,8 @@ $(addprefix $(obj)/,$(libfdt_objs) atags $(addprefix $(obj)/,$(libfdt_hdrs)) ifeq ($(CONFIG_ARM_ATAG_DTB_COMPAT),y) +CFLAGS_REMOVE_atags_to_fdt.o += -Wframe-larger-than=${CONFIG_FRAME_WARN} +CFLAGS_atags_to_fdt.o += -Wframe-larger-than=1280 OBJS += $(libfdt_objs) atags_to_fdt.o endif