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=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED 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 2C9C4C433DF for ; Sat, 4 Jul 2020 11:49:51 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id D76B12084C for ; Sat, 4 Jul 2020 11:49:50 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="Ty2SUfvU" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D76B12084C Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 812068D0060; Sat, 4 Jul 2020 07:49:50 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 7C1748D0001; Sat, 4 Jul 2020 07:49:50 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 6D73B8D0060; Sat, 4 Jul 2020 07:49:50 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0125.hostedemail.com [216.40.44.125]) by kanga.kvack.org (Postfix) with ESMTP id 58B2C8D0001 for ; Sat, 4 Jul 2020 07:49:50 -0400 (EDT) Received: from smtpin27.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with ESMTP id 208802C96 for ; Sat, 4 Jul 2020 11:49:50 +0000 (UTC) X-FDA: 77000224140.27.help08_0e10ffb26e9a Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin27.hostedemail.com (Postfix) with ESMTP id EE4A73D668 for ; Sat, 4 Jul 2020 11:49:49 +0000 (UTC) X-HE-Tag: help08_0e10ffb26e9a X-Filterd-Recvd-Size: 3966 Received: from mail-qv1-f65.google.com (mail-qv1-f65.google.com [209.85.219.65]) by imf02.hostedemail.com (Postfix) with ESMTP for ; Sat, 4 Jul 2020 11:49:49 +0000 (UTC) Received: by mail-qv1-f65.google.com with SMTP id m9so15338014qvx.5 for ; Sat, 04 Jul 2020 04:49:49 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=WE1Mw4ikNTVMhi5z6f0bikUljqP0+7FGO9i/QR2Wmh0=; b=Ty2SUfvUIu8S4/nbormX4mLD9Uxbh2TamyS3rEx1/xKeLR1EwKIGV3PxOBxUnaKf8R Um5vzFOXBQS/mq6y7z6uBesBwlswEAmLK/4NUy0HZAim9SDEQO3KbqlhT9yJQFd1FRCd Iu2H24wXTdgXzTRyj9ei7jDVaif1ziIZjpRfr40l3c3nducEp5uXicGJ+J1pzjvOj9K3 T8XvVs6nXYGH8WYaWwzf8yA09pQKpMdaVKh9hgS4yHPOfgDRAcR+KVVO5Zw6wfz3fFLP ltwee67BoQ17HwJM5Pn/HMl7K1pvgIcxt7lTnUE7f584LAp3Ee8dSXqS+YnwCYVm7N7S U1Ng== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=WE1Mw4ikNTVMhi5z6f0bikUljqP0+7FGO9i/QR2Wmh0=; b=og2nuEG1ziVPDQPGt1NOHEreDPAuLXpU134V17E9djnXsT45yS+9duYpk4A7BS6JnS q1lIwcGLOyltllDZ0QDJFJ1nnvYTVltWA3pnHqMLm7BGMgbb+7nOrqoPBrCIf7NBJNLS GpFE4PUXrU0Q6V0IFWm6WwV6S/woA6LC9VxNR0A2CQ0MdlYR73vEkhEU9C2E+rw76HwJ TslJWjTH9bYyhv+e/OLXuzUQwU4yAHSjGS4xdrzVcAuovazEsC/L1S6UxRfVDm+gis0C Ot5sME4hdwH1w6iWW4s6TvppmaPTnkNcQ3m1ap69iCwcdFaxaYT/EX0YIxktp18kJvam +8Og== X-Gm-Message-State: AOAM530RXrTWv5Edc8oV13/LA+c9NyDbLghWFOkr1GuNwFTZYRWF/Cws 1epufSARFExurLt6vC7gbPgtWT7hDVv1uoYYDvI= X-Google-Smtp-Source: ABdhPJycHbvE1/g13xeISmgr1IEBmbHsOMZRoML9YVNpv2gK1E8VQQx78DlTfOGRjYgeI2rxMm+ReLXHaU/sgqwlPVs= X-Received: by 2002:a05:6214:925:: with SMTP id dk5mr26983444qvb.183.1593863388982; Sat, 04 Jul 2020 04:49:48 -0700 (PDT) MIME-Version: 1.0 References: <20200704113722.GM25523@casper.infradead.org> In-Reply-To: <20200704113722.GM25523@casper.infradead.org> From: Pekka Enberg Date: Sat, 4 Jul 2020 14:49:32 +0300 Message-ID: Subject: Re: 5.8.0rc3 page allocation failure: order:0, mode:0x40810 To: Matthew Wilcox Cc: Chris Murphy , Linux Memory Management List , Dan Williams Content-Type: text/plain; charset="UTF-8" X-Rspamd-Queue-Id: EE4A73D668 X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam02 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: Hi Matthew, On Sat, Jul 4, 2020 at 2:37 PM Matthew Wilcox wrote: > > On Sat, Jul 04, 2020 at 01:21:05AM -0600, Chris Murphy wrote: > > Hi, > > > > This seems to be a one off - I'm not even sure what was happening at > > the time. Possibly running a qemu-kvm VM. > > > > 5.8.0-0.rc3.1.fc33.x86_64+debug > > i7-2820QM > > MemTotal: 8021304 kB > > $ swapon > > NAME TYPE SIZE USED PRIO > > /dev/sda5 partition 10.4G 0B -2 > > /dev/zram0 partition 3.8G 9M 100 > > $ zramctl > > NAME ALGORITHM DISKSIZE DATA COMPR TOTAL STREAMS MOUNTPOINT > > /dev/zram0 lzo-rle 3.8G 7.8M 2.3M 4.5M 8 [SWAP] > > > > > > > > > > [126841.385050] swapper/2: page allocation failure: order:0, > > mode:0x40810(GFP_NOWAIT|__GFP_COMP|__GFP_RECLAIMABLE), > > This is one for Dan; he decided to use GFP_NOWAIT in commit > 0abdd7a81b7e3fd781d7fabcca49501852bba17e Why is that a problem? Unless I am missing something, there's plenty of free pages available for the slab allocation: > > [126841.385277] Node 0 Normal: 366*4kB (UME) 413*8kB (UME) 76*16kB > > (UME) 18*32kB (UME) 20*64kB (UME) 16*128kB (UME) 10*256kB (UME) > > 8*512kB (ME) 5*1024kB (UE) 2*2048kB (UM) 6*4096kB (M) = 50336kB