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=-1.0 required=3.0 tests=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 ACA1FC433DF for ; Thu, 2 Jul 2020 06:19:36 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 7B04920884 for ; Thu, 2 Jul 2020 06:19:36 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7B04920884 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id E23E58D000F; Thu, 2 Jul 2020 02:19:35 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id DD51D8D0001; Thu, 2 Jul 2020 02:19:35 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id C9BEF8D000F; Thu, 2 Jul 2020 02:19:35 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0169.hostedemail.com [216.40.44.169]) by kanga.kvack.org (Postfix) with ESMTP id B13C58D0001 for ; Thu, 2 Jul 2020 02:19:35 -0400 (EDT) Received: from smtpin17.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay04.hostedemail.com (Postfix) with ESMTP id 25ADE1EE6 for ; Thu, 2 Jul 2020 06:19:35 +0000 (UTC) X-FDA: 76992134310.17.leaf94_0515e8e26e87 Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin17.hostedemail.com (Postfix) with ESMTP id EFC44180D0184 for ; Thu, 2 Jul 2020 06:19:34 +0000 (UTC) X-HE-Tag: leaf94_0515e8e26e87 X-Filterd-Recvd-Size: 2951 Received: from mail-ej1-f52.google.com (mail-ej1-f52.google.com [209.85.218.52]) by imf09.hostedemail.com (Postfix) with ESMTP for ; Thu, 2 Jul 2020 06:19:34 +0000 (UTC) Received: by mail-ej1-f52.google.com with SMTP id n26so13891709ejx.0 for ; Wed, 01 Jul 2020 23:19:34 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=KI1xByR8EdweHRLmqVp5qJFfLoJv1RlZqf4LrtxTZZM=; b=fubfaKYwFkH2AfnitNLM7OzlPUWO8hVm4GP6uCZPxlgoASW7HLR1zNhX6nFpHkOV+f HVvw1tzGVU5AFkUWwpnHZerriO4clx2bZp6BOrAlAOUlz2BwXJgL7YeOEXBlgVdbLbr2 ZGRH1gLA7UBDGd+LaaRqjB2eIyQIiNDSiT+FdmQ+r8pEwr78QWNWA73O2R5+Ro+RmUw0 ptLTj+Bqrz0B/6DM3BQB6OX0YvM45uWIcLZCyRzT0VaYezx/UgA88E+fhjhAwrxQHAhG VcQzg3Oz+DG7c8d0p4AHfGi+yNJ7vz6u/mM6PGTF+GcRzN61O4UowlTnbcpen/XbKQer LeEA== X-Gm-Message-State: AOAM5316E9Do33N10L5tjD7XRa5RRcsIS6iMrNORNEXZ9rmW7ih84nvs KtyPeyGh1Qhc6znGK/cF+yo= X-Google-Smtp-Source: ABdhPJzZfQ/Vzu5+dRVQkkNl0kWBWztA+Fk3jN9N0Ylyp4s2Cn6jrsAZ5Vcgq6iJfuiL4Ft9VS55sQ== X-Received: by 2002:a17:906:33ca:: with SMTP id w10mr18728327eja.171.1593670773586; Wed, 01 Jul 2020 23:19:33 -0700 (PDT) Received: from localhost (ip-37-188-168-3.eurotel.cz. [37.188.168.3]) by smtp.gmail.com with ESMTPSA id u19sm9559612edd.62.2020.07.01.23.19.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 01 Jul 2020 23:19:32 -0700 (PDT) Date: Thu, 2 Jul 2020 08:19:31 +0200 From: Michal Hocko To: Roman Gushchin Cc: Naresh Kamboju , Shakeel Butt , Johannes Weiner , Andrew Morton , linux-mm , open list , lkft-triage@lists.linaro.org, Chris Down Subject: Re: BUG: Bad page state in process - page dumped because: page still charged to cgroup Message-ID: <20200702061931.GB18446@dhcp22.suse.cz> References: <20200701082904.GM2369@dhcp22.suse.cz> <20200701184552.GA61684@carbon.DHCP.thefacebook.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200701184552.GA61684@carbon.DHCP.thefacebook.com> X-Rspamd-Queue-Id: EFC44180D0184 X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam03 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000011, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Wed 01-07-20 11:45:52, Roman Gushchin wrote: [...] > So it makes me think that somehow memcg_kmem_enabled() became false > after being true, which can cause refcounting problems as well. Isn't this a similar class of problem as http://lkml.kernel.org/r/1593641660-13254-2-git-send-email-bhsharma@redhat.com? -- Michal Hocko SUSE Labs