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=-11.3 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 09BA8C47080 for ; Mon, 31 May 2021 22:14:16 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 8D8FD60FF1 for ; Mon, 31 May 2021 22:14:15 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8D8FD60FF1 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linux-foundation.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id F15378D0001; Mon, 31 May 2021 18:14:14 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id EC53E6B006C; Mon, 31 May 2021 18:14:14 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id D8D158D0001; Mon, 31 May 2021 18:14:14 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0211.hostedemail.com [216.40.44.211]) by kanga.kvack.org (Postfix) with ESMTP id A878B6B0036 for ; Mon, 31 May 2021 18:14:14 -0400 (EDT) Received: from smtpin16.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id 3EC1982499A8 for ; Mon, 31 May 2021 22:14:14 +0000 (UTC) X-FDA: 78202930428.16.3F46CBD Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by imf27.hostedemail.com (Postfix) with ESMTP id F324E8019369 for ; Mon, 31 May 2021 22:14:01 +0000 (UTC) Received: by mail.kernel.org (Postfix) with ESMTPSA id 862C36128A; Mon, 31 May 2021 22:14:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1622499252; bh=ZqQ1KrKV9Rqa7/ZX1JLTfqxuphm1nTb9JrCr8ONojuw=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=GyZJzI4WGCVRTkWYg2NalB4HNFxREuSEZrt2Fr0nl7nZkKaZQvA78x8LrAmftxOZm Z2HgA3TtLMHdqd/KRrAomKwA3e/sl50OpmIATVMJoieCe89jvemY9tFNjdaIOzE8AE FGJ9lmB/r9CiT4yYQM0kgOLdCgKpc3EwAiPqXi48= Date: Mon, 31 May 2021 15:14:12 -0700 From: Andrew Morton To: kernel test robot Cc: Yang Shi , kbuild-all@lists.01.org, clang-built-linux@googlegroups.com, linux-kernel@vger.kernel.org, Zi Yan , Linux Memory Management List Subject: Re: mm/migrate.c:1406:5: warning: stack frame size of 2096 bytes in function 'migrate_pages' Message-Id: <20210531151412.4dad38dd703119cdd33ca395@linux-foundation.org> In-Reply-To: <202105301728.lr6r1Eyr-lkp@intel.com> References: <202105301728.lr6r1Eyr-lkp@intel.com> X-Mailer: Sylpheed 3.5.1 (GTK+ 2.24.31; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: F324E8019369 Authentication-Results: imf27.hostedemail.com; dkim=pass header.d=linux-foundation.org header.s=korg header.b=GyZJzI4W; spf=pass (imf27.hostedemail.com: domain of akpm@linux-foundation.org designates 198.145.29.99 as permitted sender) smtp.mailfrom=akpm@linux-foundation.org; dmarc=none X-Rspamd-Server: rspam04 X-Stat-Signature: 8s5mqbemopcbuk6omtak67strmggy1p4 X-HE-Tag: 1622499241-442156 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Sun, 30 May 2021 17:46:48 +0800 kernel test robot wrote: > tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master > head: b90e90f40b4ff23c753126008bf4713a42353af6 > commit: dd4ae78a21fc05d91d841e499dddd057ad64a4df mm: migrate: simplify the logic for handling permanent failure migrate_pages() isn't a good place to be using lots of stack. Am I correct in assuming that this is a bisection result? I don't immediately see why dd4ae78a21fc05d91d would be the main cause of this.