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 Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 15A30EB64D8 for ; Wed, 21 Jun 2023 21:39:44 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 4234D8D0003; Wed, 21 Jun 2023 17:39:44 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 3D3D88D0002; Wed, 21 Jun 2023 17:39:44 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 2C2788D0003; Wed, 21 Jun 2023 17:39:44 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0010.hostedemail.com [216.40.44.10]) by kanga.kvack.org (Postfix) with ESMTP id 1C55E8D0002 for ; Wed, 21 Jun 2023 17:39:44 -0400 (EDT) Received: from smtpin25.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay08.hostedemail.com (Postfix) with ESMTP id DCB2B140A47 for ; Wed, 21 Jun 2023 21:39:43 +0000 (UTC) X-FDA: 80928072246.25.B2DBD2F Received: from mail-pj1-f47.google.com (mail-pj1-f47.google.com [209.85.216.47]) by imf18.hostedemail.com (Postfix) with ESMTP id 04CC91C000A for ; Wed, 21 Jun 2023 21:39:41 +0000 (UTC) Authentication-Results: imf18.hostedemail.com; dkim=pass header.d=chromium.org header.s=google header.b=RjsdU3Z7; spf=pass (imf18.hostedemail.com: domain of keescook@chromium.org designates 209.85.216.47 as permitted sender) smtp.mailfrom=keescook@chromium.org; dmarc=pass (policy=none) header.from=chromium.org ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1687383582; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=LMQGKrnwxJrYKagQrGNd4HzBWauMpUnU63pcxUio84Q=; b=6675xTmid3p1DjCPLC7EoA1vuiCOIuK75lQlzYf9IyX7lfAuB6vveWs7RBrBMYZXVHQ9nV KgonkQvt6w6E8N6i07DAhIK5hFs7VhJ56ie8z2Q5RDyGTacFeYXWFvMQEAr+j7NN25MzhG 7lMK6siPE436OvkOIKMt55htQIYr63I= ARC-Authentication-Results: i=1; imf18.hostedemail.com; dkim=pass header.d=chromium.org header.s=google header.b=RjsdU3Z7; spf=pass (imf18.hostedemail.com: domain of keescook@chromium.org designates 209.85.216.47 as permitted sender) smtp.mailfrom=keescook@chromium.org; dmarc=pass (policy=none) header.from=chromium.org ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1687383582; a=rsa-sha256; cv=none; b=wmXYFme2380jBVVcr8xX4/DbJbzotiVTLG7xhG4bxv8sczZM5pUSHLxAugT2o5kwzRwgYd GlXkMhAz/G0zWTkLZxESgycA6HRUrwmy6LpIITT26/VEhHxBlVRwmLTgsG2idF1nMoDhAa Oro59LrCBJkHaB9vPlMQJ28nJbdpSgE= Received: by mail-pj1-f47.google.com with SMTP id 98e67ed59e1d1-25e803df0d7so3061814a91.3 for ; Wed, 21 Jun 2023 14:39:41 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; t=1687383581; x=1689975581; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:from:to:cc:subject:date:message-id:reply-to; bh=LMQGKrnwxJrYKagQrGNd4HzBWauMpUnU63pcxUio84Q=; b=RjsdU3Z7MemvIOsOm+J6epw1Da5oDqUFcQj7hPXtoM07I5aKCN1O/Ec61j/I+Bt/Jk iO/56fh+i5GjcvWZNRk0BPlV+rs2So+t6fS/USYtxV4JCEKZGpl5mqsnavtwqrFNhVf0 SozDO4u4Xr7eFaEMsLVk+4LzP1IAL17XkogEI= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1687383581; x=1689975581; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=LMQGKrnwxJrYKagQrGNd4HzBWauMpUnU63pcxUio84Q=; b=PCDl3+gM2ZvyzDeSx1Xklb8bbDp+jslCynateaFVCYNFWD4Ro1ONNp5GxC2NRWdozg 0i9NRHtv8y33eT+XL8Y5qU68o8VvZbonUrQuv/fTsqaght2IzcRR5o1EeJG/ZI4hZTsp mVuIgjqd997oeElWH2n44CQmFiSljidYZhuPY680QewXTCpbzFold/9p1a49pZc30+c7 fya3mG9XzJ+7594RVU/XAepaYO9SEQdGWK/Bl6vS6inBkp5VUzJCWSS/krp2BWPsYsVs TKJz6BeOKkAAy8ZzPjGayRWQ2wWaYb//TY+AkWiF7y94KVVZu1222VtltIWiBT5MXMMA PuFQ== X-Gm-Message-State: AC+VfDyS7mD0a82am/bopTMW3zIu49WpqfwzF5zBPjMWQUjciIkpRAqz KB/v7WIo2UnvnbHCV9xaQ34obQ== X-Google-Smtp-Source: ACHHUZ6ncMjo1q4HvqrqyxPoLFnGjEfqfAMeVa1q+LhlzHMxG2JfRgkZMMsKBe/2H+Zd9zkQ386CjA== X-Received: by 2002:a17:90a:c905:b0:258:818a:fd65 with SMTP id v5-20020a17090ac90500b00258818afd65mr9890799pjt.30.1687383580740; Wed, 21 Jun 2023 14:39:40 -0700 (PDT) Received: from www.outflux.net (198-0-35-241-static.hfc.comcastbusiness.net. [198.0.35.241]) by smtp.gmail.com with ESMTPSA id m3-20020a17090a7f8300b002563e8a0225sm3591485pjl.48.2023.06.21.14.39.39 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 21 Jun 2023 14:39:40 -0700 (PDT) Date: Wed, 21 Jun 2023 14:39:39 -0700 From: Kees Cook To: kernel test robot Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev, Linux Memory Management List , "Gustavo A. R. Silva" , linux-hardening@vger.kernel.org, Nick Desaulniers Subject: Re: [linux-next:master 2819/11071] fs/ceph/addr.c:794:12: warning: stack frame size (2096) exceeds limit (2048) in 'ceph_writepages_start' Message-ID: <202306211437.EDDEDA582@keescook> References: <202306210637.TpfYq9gM-lkp@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <202306210637.TpfYq9gM-lkp@intel.com> X-Rspamd-Queue-Id: 04CC91C000A X-Rspam-User: X-Stat-Signature: 6zgc8czextty8kmgw3p6nptswmxhihfb X-Rspamd-Server: rspam01 X-HE-Tag: 1687383581-197315 X-HE-Meta: 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 c+r/Hc31 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000002, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Wed, Jun 21, 2023 at 06:56:36AM +0800, kernel test robot wrote: > tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master > head: 9dbf40840551df336c95ce2a3adbdd25ed53c0ef > commit: df8fc4e934c12b906d08050d7779f292b9c5c6b5 [2819/11071] kbuild: Enable -fstrict-flex-arrays=3 This looks very much like: https://lore.kernel.org/all/202306100035.VTusNhm4-lkp@intel.com/ > config: riscv-randconfig-r004-20230620 (https://download.01.org/0day-ci/archive/20230621/202306210637.TpfYq9gM-lkp@intel.com/config) > compiler: clang version 16.0.4 (https://github.com/llvm/llvm-project.git ae42196bc493ffe877a7e3dff8be32035dea4d07) > reproduce: (https://download.01.org/0day-ci/archive/20230621/202306210637.TpfYq9gM-lkp@intel.com/reproduce) > > If you fix the issue in a separate patch/commit (i.e. not just a new version of > the same patch/commit), kindly add following tags > | Reported-by: kernel test robot > | Closes: https://lore.kernel.org/oe-kbuild-all/202306210637.TpfYq9gM-lkp@intel.com/ > > All warnings (new ones prefixed by >>): > > >> fs/ceph/addr.c:794:12: warning: stack frame size (2096) exceeds limit (2048) in 'ceph_writepages_start' [-Wframe-larger-than] > static int ceph_writepages_start(struct address_space *mapping, > ^ > 1820/2096 (86.83%) spills, 276/2096 (13.17%) variables > 1 warning generated. This appears to be a clang stack slot reuse issue. It continues to be investigated. -Kees -- Kees Cook