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=-2.3 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no 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 75FF7C3F2CD for ; Tue, 3 Mar 2020 10:52:59 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 39F5D2080C for ; Tue, 3 Mar 2020 10:52:59 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 39F5D2080C Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=i-love.sakura.ne.jp Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id CE1F16B0005; Tue, 3 Mar 2020 05:52:58 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id C93996B0006; Tue, 3 Mar 2020 05:52:58 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id BA80E6B0007; Tue, 3 Mar 2020 05:52:58 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0039.hostedemail.com [216.40.44.39]) by kanga.kvack.org (Postfix) with ESMTP id A3AAA6B0005 for ; Tue, 3 Mar 2020 05:52:58 -0500 (EST) Received: from smtpin05.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with ESMTP id 5E38B14513 for ; Tue, 3 Mar 2020 10:52:58 +0000 (UTC) X-FDA: 76553738436.05.cow17_71258eeefba55 X-HE-Tag: cow17_71258eeefba55 X-Filterd-Recvd-Size: 2585 Received: from www262.sakura.ne.jp (www262.sakura.ne.jp [202.181.97.72]) by imf28.hostedemail.com (Postfix) with ESMTP for ; Tue, 3 Mar 2020 10:52:57 +0000 (UTC) Received: from fsav105.sakura.ne.jp (fsav105.sakura.ne.jp [27.133.134.232]) by www262.sakura.ne.jp (8.15.2/8.15.2) with ESMTP id 023AqpGp047698; Tue, 3 Mar 2020 19:52:51 +0900 (JST) (envelope-from penguin-kernel@i-love.sakura.ne.jp) Received: from www262.sakura.ne.jp (202.181.97.72) by fsav105.sakura.ne.jp (F-Secure/fsigk_smtp/550/fsav105.sakura.ne.jp); Tue, 03 Mar 2020 19:52:51 +0900 (JST) X-Virus-Status: clean(F-Secure/fsigk_smtp/550/fsav105.sakura.ne.jp) Received: from [192.168.1.9] (M106072142033.v4.enabler.ne.jp [106.72.142.33]) (authenticated bits=0) by www262.sakura.ne.jp (8.15.2/8.15.2) with ESMTPSA id 023Aqp5c047693 (version=TLSv1.2 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Tue, 3 Mar 2020 19:52:51 +0900 (JST) (envelope-from penguin-kernel@i-love.sakura.ne.jp) Subject: Re: fs/buffer.c: WARNING: alloc_page_buffers while mke2fs To: Naresh Kamboju , linux-mm Cc: Andrew Morton , Mel Gorman , Michal Hocko References: From: Tetsuo Handa Message-ID: <0a37bb7d-18a7-c43c-52a5-f13a34decf69@i-love.sakura.ne.jp> Date: Tue, 3 Mar 2020 19:52:49 +0900 User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.5.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit 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: Hello, Naresh. > [ 98.003346] WARNING: CPU: 2 PID: 340 at > include/linux/sched/mm.h:323 alloc_page_buffers+0x210/0x288 This is /** * memalloc_use_memcg - Starts the remote memcg charging scope. * @memcg: memcg to charge. * * This function marks the beginning of the remote memcg charging scope. All the * __GFP_ACCOUNT allocations till the end of the scope will be charged to the * given memcg. * * NOTE: This function is not nesting safe. */ static inline void memalloc_use_memcg(struct mem_cgroup *memcg) { WARN_ON_ONCE(current->active_memcg); current->active_memcg = memcg; } which is about memcg. Redirecting to linux-mm. Please include exact backtrace extracted from scripts/faddr2line .