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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 010EEC433F5 for ; Wed, 27 Apr 2022 13:11:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235483AbiD0NOL (ORCPT ); Wed, 27 Apr 2022 09:14:11 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39838 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235475AbiD0NOD (ORCPT ); Wed, 27 Apr 2022 09:14:03 -0400 Received: from alexa-out-sd-02.qualcomm.com (alexa-out-sd-02.qualcomm.com [199.106.114.39]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 471A3394E11 for ; Wed, 27 Apr 2022 06:10:53 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; i=@quicinc.com; q=dns/txt; s=qcdkim; t=1651065053; x=1682601053; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=sgKrsKBISXOB8R3ejIvQ/+qcy+sZcA98Jav7AzjDS0E=; b=BOmWmeSAxVeM2Q8AVFO+D8Em+ViQJ8FcDec+4Opu9rre/Enxwz47RpY5 s8uQzddyftbbk2Th+XmAa5TAHVFgO+9uNmhQfcDkAT+oquCdrZHVp0a3P wLCEiSsYS12UyKX0SnGT06z4XYoJugPpGTziugT5aT/rSUgTzGkYTum0Y 8=; Received: from unknown (HELO ironmsg04-sd.qualcomm.com) ([10.53.140.144]) by alexa-out-sd-02.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) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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