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 C6E89C433EF for ; Wed, 27 Apr 2022 13:10:55 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 52A406B0071; Wed, 27 Apr 2022 09:10:55 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 4B3366B0072; Wed, 27 Apr 2022 09:10:55 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 32D1D6B0073; Wed, 27 Apr 2022 09:10:55 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (relay.a.hostedemail.com [64.99.140.24]) by kanga.kvack.org (Postfix) with ESMTP id 1CE226B0071 for ; Wed, 27 Apr 2022 09:10:55 -0400 (EDT) Received: from smtpin20.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay09.hostedemail.com (Postfix) with ESMTP id D79C8281DF for ; Wed, 27 Apr 2022 13:10:54 +0000 (UTC) X-FDA: 79402694028.20.611E442 Received: from alexa-out-sd-01.qualcomm.com (alexa-out-sd-01.qualcomm.com [199.106.114.38]) by imf06.hostedemail.com (Postfix) with ESMTP id F1095180055 for ; Wed, 27 Apr 2022 13:10:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; i=@quicinc.com; q=dns/txt; s=qcdkim; t=1651065054; x=1682601054; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=sgKrsKBISXOB8R3ejIvQ/+qcy+sZcA98Jav7AzjDS0E=; b=P5d/AmZQjiIxtZs+duXTBnpVNtjzNJ3x6ROBYVEQFE4SMpD0wyRqxMjz zimdPPqBY8MxGSlzCF41Q/O92Bmu5XXrOm0MY1E8Kx1wb7QMC6249nWkA CA/+cLTspN++iPpEglxWJcxVgbZJql4bGppfj/oh55YSkC+jeL9h4dPxs c=; Received: from unknown (HELO ironmsg04-sd.qualcomm.com) ([10.53.140.144]) by alexa-out-sd-01.qualcomm.com with ESMTP; 27 Apr 2022 06:10:52 -0700 X-QCInternal: smtphost Received: from nasanex01c.na.qualcomm.com ([10.47.97.222]) by ironmsg04-sd.qualcomm.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 Apr 2022 06:10:52 -0700 Received: from nalasex01a.na.qualcomm.com (10.47.209.196) by nasanex01c.na.qualcomm.com (10.47.97.222) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.22; Wed, 27 Apr 2022 06:10:52 -0700 Received: from qian (10.80.80.8) by nalasex01a.na.qualcomm.com (10.47.209.196) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.22; Wed, 27 Apr 2022 06:10:50 -0700 Date: Wed, 27 Apr 2022 09:10:48 -0400 From: Qian Cai To: Zi Yan CC: David Hildenbrand , , , , Vlastimil Babka , Mel Gorman , Eric Ren , Mike Rapoport , "Oscar Salvador" , Christophe Leroy , Andrew Morton Subject: Re: [PATCH v11 0/6] Use pageblock_order for cma and alloc_contig_range alignment. Message-ID: <20220427131048.GB71@qian> References: <20220425143118.2850746-1-zi.yan@sent.com> <20220426201855.GA1014@qian> <20220426210801.GA1038@qian> <2B9844C8-6D35-41E2-ACB2-9854E7A9C29F@nvidia.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: <2B9844C8-6D35-41E2-ACB2-9854E7A9C29F@nvidia.com> X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01a.na.qualcomm.com (10.52.223.231) To nalasex01a.na.qualcomm.com (10.47.209.196) X-Rspamd-Server: rspam10 X-Rspamd-Queue-Id: F1095180055 Authentication-Results: imf06.hostedemail.com; dkim=pass header.d=quicinc.com header.s=qcdkim header.b="P5d/AmZQ"; spf=pass (imf06.hostedemail.com: domain of quic_qiancai@quicinc.com designates 199.106.114.38 as permitted sender) smtp.mailfrom=quic_qiancai@quicinc.com; dmarc=pass (policy=none) header.from=quicinc.com X-Rspam-User: X-Stat-Signature: fyc3p3rtc8xjm1a3x9ukuaemxc9yaa6u X-HE-Tag: 1651065052-418905 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 Tue, Apr 26, 2022 at 05:38:58PM -0400, Zi Yan wrote: > Thanks. Do you mind attaching your config file? I cannot reproduce > the deadlock locally using my own config. I also see kmemleak_scan > in the dumped stack, so it must be something else in addition to > memory online/offline causing the issue. Of course it also need to enable those. The kmemleak_scan is just a symptom of one of the online operations is blocking forever, as the locks were never released. CONFIG_MEMORY_HOTPLUG=y CONFIG_MEMORY_HOTPLUG_DEFAULT_ONLINE=y CONFIG_MEMORY_HOTREMOVE=y