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=-0.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,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 97076CA9EB9 for ; Tue, 22 Oct 2019 22:24:25 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 5A3C020B7C for ; Tue, 22 Oct 2019 22:24:25 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="vzTJXRah" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 5A3C020B7C Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linux-foundation.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id E18816B0003; Tue, 22 Oct 2019 18:24:24 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id DA1ED6B0006; Tue, 22 Oct 2019 18:24:24 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id C69186B0007; Tue, 22 Oct 2019 18:24:24 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0206.hostedemail.com [216.40.44.206]) by kanga.kvack.org (Postfix) with ESMTP id 9B8306B0003 for ; Tue, 22 Oct 2019 18:24:24 -0400 (EDT) Received: from smtpin14.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay01.hostedemail.com (Postfix) with SMTP id 2039F180AD801 for ; Tue, 22 Oct 2019 22:24:24 +0000 (UTC) X-FDA: 76072850448.14.body43_9465a82ca730 X-HE-Tag: body43_9465a82ca730 X-Filterd-Recvd-Size: 2479 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by imf09.hostedemail.com (Postfix) with ESMTP for ; Tue, 22 Oct 2019 22:24:23 +0000 (UTC) Received: from akpm3.svl.corp.google.com (unknown [104.133.8.65]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 78847207FC; Tue, 22 Oct 2019 22:24:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1571783062; bh=ez8tkSR8txCVqD6DpckNBXg+7tEUdjKeAOm63rOmyXM=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=vzTJXRaht4iHlsW9y3944ge5TbrC6yKH9IVjZdFZh5zlGiIOxvngVjxMBBp8h1DHv 6zVXwLSzEnxzawWaeAXOQLkHPRwO+xtL4GtQIIGtkCSrw0orgCkUg+4aUzZwsKhirT UBAyPibXAELSA/0XRbQSVoq0L8Xb2U5f4DhwbXyk= Date: Tue, 22 Oct 2019 15:24:22 -0700 From: Andrew Morton To: linux-mm@kvack.org, linux-xfs@vger.kernel.org Cc: bugzilla-daemon@bugzilla.kernel.org, goodmirek@goodmirek.com, Hillf Danton , Dmitry Vyukov , Joel Fernandes , Tetsuo Handa Subject: Re: [Bug 205135] System hang up when memory swapping (kswapd deadlock) Message-Id: <20191022152422.e47fda82879dc7cd1f3cf5e5@linux-foundation.org> In-Reply-To: References: X-Mailer: Sylpheed 3.7.0 (GTK+ 2.24.32; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit 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: (switched to email. Please respond via emailed reply-to-all, not via the bugzilla web interface). On Tue, 22 Oct 2019 09:02:22 +0000 bugzilla-daemon@bugzilla.kernel.org wrote: > https://bugzilla.kernel.org/show_bug.cgi?id=205135 > > --- Comment #7 from goodmirek@goodmirek.com --- > Everyone who uses a swapfile on XFS filesystem seem affected by this hang up. > Not sure about other filesystems, I did not have a chance to test it elsewhere. > > This unreproduced bot crash could be related: > https://lore.kernel.org/linux-mm/20190910071804.2944-1-hdanton@sina.com/ Thanks. Might be core MM, might be XFS, might be Fedora. Hilf, does your patch look related? That seems to have gone quiet? Should we progress Tetsuo's patch?