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=-2.5 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS, USER_AGENT_MUTT autolearn=ham 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 5DABAC282C2 for ; Wed, 13 Feb 2019 13:20:14 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 2CA2C222B1 for ; Wed, 13 Feb 2019 13:20:14 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="F7JEeD4i" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2CA2C222B1 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=techsingularity.net Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=dclWjKnKfRE1QxjhzYdpzAycdmKK7mPitz0aQ7bcpUs=; b=F7JEeD4iQH4uRg TOzXecHTa4AmXil9SktA8vvCcdBY5g+hqpA6mEmm4XVl9SpD5P7l+/QlUUEI24/h96GMQkCLrktm/ k4jbrct8qmGVPBeOb4Utgj8UDgTmKTXN7hbYeRYdJfLNon6M8CKOv3T1zpgUqwnN+8AbLKEiFGrbC UKTUWGhnRw8wb5lJ2uxmk4QkgJyow8KvMkw5AmHtn3Vs5X+7Ujn1n32nBedDz9Q86kkUBoedyaTCb FLeV/kaS2he73bkiejkwWzelUuGtupx04eNV4KDMJfyFsSv0bIJG4XUmwbOFm6dhsS7IpmNYactvJ gJ/t34Jh/REax0PJAGKQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1gtuSK-0007FF-1W; Wed, 13 Feb 2019 13:20:04 +0000 Received: from outbound-smtp11.blacknight.com ([46.22.139.106]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1gtuS8-00072N-6r for linux-arm-kernel@lists.infradead.org; Wed, 13 Feb 2019 13:19:56 +0000 Received: from mail.blacknight.com (pemlinmail03.blacknight.ie [81.17.254.16]) by outbound-smtp11.blacknight.com (Postfix) with ESMTPS id 5E9581C241B for ; Wed, 13 Feb 2019 13:19:50 +0000 (GMT) Received: (qmail 17701 invoked from network); 13 Feb 2019 13:19:50 -0000 Received: from unknown (HELO techsingularity.net) (mgorman@techsingularity.net@[37.228.225.79]) by 81.17.254.9 with ESMTPSA (AES256-SHA encrypted, authenticated); 13 Feb 2019 13:19:50 -0000 Date: Wed, 13 Feb 2019 13:19:48 +0000 From: Mel Gorman To: Yury Norov Subject: Re: 5.0-rc kernel hangs on early boot Message-ID: <20190213131948.GR9565@techsingularity.net> References: <20190213082134.GA21834@yury-thinkpad> <20190213111409.GN9565@techsingularity.net> <20190213115115.GA8928@yury-thinkpad> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20190213115115.GA8928@yury-thinkpad> User-Agent: Mutt/1.10.1 (2018-07-13) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190213_051952_764338_169D954D X-CRM114-Status: GOOD ( 17.83 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Andrea Arcangeli , Catalin Marinas , Linus Torvalds , Will Deacon , linux-kernel@vger.kernel.org, Michal Hocko , linux-arm-kernel@lists.infradead.org, David Rientjes , Andrew Morton , Zi Yan , Vlastimil Babka Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Wed, Feb 13, 2019 at 02:51:15PM +0300, Yury Norov wrote: > On Wed, Feb 13, 2019 at 11:14:09AM +0000, Mel Gorman wrote: > > On Wed, Feb 13, 2019 at 11:25:40AM +0300, Yury Norov wrote: > > > Hi Mel, all, > > > > > > My kernel on qemu/arm64 setup hangs at early boot since v5.0-rc1. > > > Backtrace is not too verbose: > > > (gdb) i threads > > > Id Target Id Frame > > > * 1 Thread 1 (CPU#0 [running]) 0xffff000010a49b74 in __delay (cycles=4096) > > > at arch/arm64/lib/delay.c:49 > > > 2 Thread 2 (CPU#1 [halted ]) 0x0000000000000000 in ?? () > > > 3 Thread 3 (CPU#2 [halted ]) 0x0000000000000000 in ?? () > > > 4 Thread 4 (CPU#3 [halted ]) 0x0000000000000000 in ?? () > > > (gdb) bt > > > #0 0xffff000010a49b74 in __delay (cycles=4096) at arch/arm64/lib/delay.c:49 > > > Backtrace stopped: previous frame identical to this frame (corrupt stack?) > > > > > > Reverting the patch > > > 1c30844d2dfe272d58c ("mm: reclaim small amounts of memory when an external > > > fragmentation event occurs") together with following patch > > > 73444bc4d8f92e46a20 ("mm, page_alloc: do not wake kswapd with zone lock held") > > > helps me to boot normally. > > > > > > > Well, that's a bad start to any day. Thanks for tracking it down. Does > > the following patch help? I can't test it properly as I didn't recreate > > your boot image or initrd but this appears to get past the initial boot > > phase at least. > > Hi Mel, > > The patch works for me. The day gets better indeed. :-) > > Tested-by: Yury Norov > Thanks! I've resent the patch to Andrew so hopefully it'll be picked up before 5.0 is released. -- Mel Gorman SUSE Labs _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel