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=-5.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS 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 5D3A4C47084 for ; Tue, 25 May 2021 18:00:28 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id D2C70613D8 for ; Tue, 25 May 2021 18:00:27 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D2C70613D8 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=suse.de Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 6846E6B0036; Tue, 25 May 2021 14:00:27 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 634166B006C; Tue, 25 May 2021 14:00:27 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 4AD896B006E; Tue, 25 May 2021 14:00:27 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0091.hostedemail.com [216.40.44.91]) by kanga.kvack.org (Postfix) with ESMTP id 176406B0036 for ; Tue, 25 May 2021 14:00:27 -0400 (EDT) Received: from smtpin22.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay04.hostedemail.com (Postfix) with ESMTP id AF3A6AC0B for ; Tue, 25 May 2021 18:00:26 +0000 (UTC) X-FDA: 78180518052.22.987026C Received: from mx2.suse.de (mx2.suse.de [195.135.220.15]) by imf10.hostedemail.com (Postfix) with ESMTP id 512CC4142C41 for ; Tue, 25 May 2021 18:00:20 +0000 (UTC) X-Virus-Scanned: by amavisd-new at test-mx.suse.de DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1621965625; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=NgBPhouft99Ui43ozzCY0B6U/k51FIAlxJ2/MpfUsP4=; b=ElpQxK+HH3ANT/imMyY3cj4d5xakfztZG4n+dqNqmjsFClVF6axympo2AiEc/xd0V1vwz7 VRTiR0H50GVzoX0V/p7gl80l9KvdWsTmLl0c3tRmQofkZxdjqo/+wsDA4nOKuSC9NkUgkC MCpwf2cX4XRYvldW+NOjZ9pNPb7U40o= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1621965625; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=NgBPhouft99Ui43ozzCY0B6U/k51FIAlxJ2/MpfUsP4=; b=7feiVxBJkKJ6PgvqiOrw4iFzGCPObeRBqzD4gwdf/Ia3sPpNrkWQI8YUubMUtHUlCC8+cH p/ewdh9WjO7LGADQ== Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id EF264AF59; Tue, 25 May 2021 18:00:24 +0000 (UTC) Date: Tue, 25 May 2021 20:00:22 +0200 From: Oscar Salvador To: "Qian Cai (QUIC)" Cc: David Hildenbrand , Andrew Morton , Anshuman Khandual , Vlastimil Babka , Michal Hocko , Linux Memory Management List , Linux Kernel Mailing List Subject: Re: Arm64 crash while online/offline memory sections Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Authentication-Results: imf10.hostedemail.com; dkim=pass header.d=suse.de header.s=susede2_rsa header.b=ElpQxK+H; dkim=pass header.d=suse.de header.s=susede2_ed25519 header.b=7feiVxBJ; dmarc=none; spf=pass (imf10.hostedemail.com: domain of osalvador@suse.de designates 195.135.220.15 as permitted sender) smtp.mailfrom=osalvador@suse.de X-Stat-Signature: y7ymzdjh6k1p7g7nh4x58ebsiodppnho X-Rspamd-Queue-Id: 512CC4142C41 X-Rspamd-Server: rspam02 X-HE-Tag: 1621965620-484995 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, May 25, 2021 at 05:57:34PM +0000, Qian Cai (QUIC) wrote: > > Do we know which patch in particular is problematic? > > Okay, the winner is "mm,memory_hotplug: Allocate memmap from the added memory range". > > https://lore.kernel.org/linux-mm/20210421102701.25051-5-osalvador@suse.de/ Ok, which means that is irrelevant to having it enabled, as the latter patch of that series actualy enables it for arm64. Can you work out where exactly the crash happens? I will have a look into it tomorrow. Thanks for reporting. -- Oscar Salvador SUSE L3