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 487BAC47082 for ; Mon, 31 May 2021 22:14:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 26FE36135D for ; Mon, 31 May 2021 22:14:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232138AbhEaWPz (ORCPT ); Mon, 31 May 2021 18:15:55 -0400 Received: from mail.kernel.org ([198.145.29.99]:58264 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231585AbhEaWPy (ORCPT ); Mon, 31 May 2021 18:15:54 -0400 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 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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.