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 748A1C433EF for ; Sun, 13 Feb 2022 12:24:10 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id CF0CA6B0072; Sun, 13 Feb 2022 07:24:09 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id C9DB76B0073; Sun, 13 Feb 2022 07:24:09 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id B8C196B0078; Sun, 13 Feb 2022 07:24:09 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0250.hostedemail.com [216.40.44.250]) by kanga.kvack.org (Postfix) with ESMTP id A5F616B0072 for ; Sun, 13 Feb 2022 07:24:09 -0500 (EST) Received: from smtpin16.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with ESMTP id 6244099904 for ; Sun, 13 Feb 2022 12:24:09 +0000 (UTC) X-FDA: 79137673818.16.EB20802 Received: from casper.infradead.org (casper.infradead.org [90.155.50.34]) by imf04.hostedemail.com (Postfix) with ESMTP id CA31940003 for ; Sun, 13 Feb 2022 12:24:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=3R/v5iJ9NtnkzOIZMwjzSo4+osvAIFMFBp1Ja5KHqrc=; b=vzmIb+kbjc46fXvE7pmDa/6++Y KWBxquoQpW4hjPqI4Qav0oU3ZnxuuVIl0hgufBUOuNZfZ778tKXUN8kslVyckOO3ZVO/bHaY8DKRW 7pfJF3q5J/M627EVQS1AcwQYaekKwSuZkYv+6VAPj4BOtzh4K/+tawe+qeYZsY6xuTEFX8CsvU/tO XMUuKDGcxBHdsVpmbFD4kaQ2R42I7pispZUs2zHvvzrwA5SipEiCeOSslygY7Yi2tMiyuUIW1YY4l WW9SvMTLc3mrVCaH9p97iqwDDZsKh0G4iLht5JGTEIOnkmvg/jWi2tEkrddznAsHieln2NwPk0V+h DeJijxRg==; Received: from willy by casper.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1nJDv7-00C0Wn-Qi; Sun, 13 Feb 2022 12:24:01 +0000 Date: Sun, 13 Feb 2022 12:24:01 +0000 From: Matthew Wilcox To: Yang Yanchao Cc: linux-mm@kvack.org, wuxu.wu@huawei.com Subject: Re: The process hangs during memory-hotplug. Message-ID: References: <20220213110703.2008-1-yangyanchao6@huawei.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20220213110703.2008-1-yangyanchao6@huawei.com> X-Rspam-User: X-Rspamd-Server: rspam08 X-Rspamd-Queue-Id: CA31940003 X-Stat-Signature: bq74p6ncofiwmw4pgo43febhqg3k9wcm Authentication-Results: imf04.hostedemail.com; dkim=pass header.d=infradead.org header.s=casper.20170209 header.b=vzmIb+kb; spf=none (imf04.hostedemail.com: domain of willy@infradead.org has no SPF policy when checking 90.155.50.34) smtp.mailfrom=willy@infradead.org; dmarc=none X-HE-Tag: 1644755048-901578 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000001, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Sun, Feb 13, 2022 at 07:07:03PM +0800, Yang Yanchao wrote: > Hello, > > I find a hanging issue during memory-hotplug on kernel-4.18. 4.18 was released over three years ago and is long past its support lifespan. 4.19.229 is the closest kernel which is still receiving any kind of support, and even then, I'd recommend trying to reproduce the problem on 5.16 before reporting this kind of bug.