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=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 7277CC433E1 for ; Thu, 21 May 2020 09:36:10 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 404B120721 for ; Thu, 21 May 2020 09:36:10 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 404B120721 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=arndb.de Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id DCC3280024; Thu, 21 May 2020 05:36:09 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id D7CE480007; Thu, 21 May 2020 05:36:09 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id C941280024; Thu, 21 May 2020 05:36:09 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0115.hostedemail.com [216.40.44.115]) by kanga.kvack.org (Postfix) with ESMTP id B09BF80007 for ; Thu, 21 May 2020 05:36:09 -0400 (EDT) Received: from smtpin27.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay05.hostedemail.com (Postfix) with ESMTP id 5EF23181AEF1F for ; Thu, 21 May 2020 09:36:09 +0000 (UTC) X-FDA: 76840220058.27.sign05_6fdd870712034 X-HE-Tag: sign05_6fdd870712034 X-Filterd-Recvd-Size: 5339 Received: from mout.kundenserver.de (mout.kundenserver.de [217.72.192.75]) by imf36.hostedemail.com (Postfix) with ESMTP for ; Thu, 21 May 2020 09:36:08 +0000 (UTC) Received: from mail-qk1-f182.google.com ([209.85.222.182]) by mrelayeu.kundenserver.de (mreue108 [212.227.15.145]) with ESMTPSA (Nemesis) id 1M5wY1-1ji25F45LH-007Tp9 for ; Thu, 21 May 2020 11:36:07 +0200 Received: by mail-qk1-f182.google.com with SMTP id i14so6523037qka.10 for ; Thu, 21 May 2020 02:36:06 -0700 (PDT) X-Gm-Message-State: AOAM532JHZC1aPKEu7BMUHHIbS+fZQjE1Ie1DCqI5+rXngfhCC4oGrBW IykCRhAwRzB+a2RMeOtkKE9/DlMtW1RhMSH8O9E= X-Google-Smtp-Source: ABdhPJws3KKBV0w5Mhpfv6LZKBqE10KcRtqFB/QC1e+qfkRLL99VkSqd9yoBmueLGwUSMY9q0aWGCr2HfWe2EBzpd8M= X-Received: by 2002:a37:4c48:: with SMTP id z69mr8052116qka.138.1590053765528; Thu, 21 May 2020 02:36:05 -0700 (PDT) MIME-Version: 1.0 References: <20200501135806.4eebf0b92f84ab60bba3e1e7@linux-foundation.org> <20200519075213.GF32497@dhcp22.suse.cz> <20200519084535.GG32497@dhcp22.suse.cz> <20200520190906.GA558281@chrisdown.name> In-Reply-To: From: Arnd Bergmann Date: Thu, 21 May 2020 11:35:49 +0200 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: mm: mkfs.ext4 invoked oom-killer on i386 - pagecache_get_page To: Naresh Kamboju Cc: Chris Down , Yafang Shao , Michal Hocko , Anders Roxell , "Linux F2FS DEV, Mailing List" , linux-ext4 , linux-block , Andrew Morton , open list , Linux-Next Mailing List , linux-mm , Andreas Dilger , Jaegeuk Kim , "Theodore Ts'o" , Chao Yu , Hugh Dickins , Andrea Arcangeli , Matthew Wilcox , Chao Yu , lkft-triage@lists.linaro.org, Johannes Weiner , Roman Gushchin , Cgroups Content-Type: text/plain; charset="UTF-8" X-Provags-ID: V03:K1:eRUMVgOnRTc5IIM0KFf2/jIYLl2iHWDOq/qoXQZplKXyx+1+0p7 Zyb07+mXIfDcpK2npJgm74jR3YzM0M0mZaOOzme0+a5mfw9SrZ6kgXH51r3Z5F/15Z1XbfG znWPqBjgW9uzEvRwwha3gmvTkxCuhcO1KS5/0QFrAhDceNk+VL9cVVf/l0/T/brZNf7RgPZ xeb9Pqud8IIHjnPBSIfUg== X-UI-Out-Filterresults: notjunk:1;V03:K0:x2ad/xDwSQ0=:2c3yg1GZp0zLWd3U6gKJ6/ rsVHSOY/51CvoKG5teosyJXd6EiV7lxq7BiCLzEk2LP7VReVb9DjFPkce7MfK7FxtspZ2vlt9 UjehaFXXg3jvCJQTO51B5tmMRKmXVAqK5j0AX/7soj8lDvQXVcGm9JYMfVWtX+I1WmhwLwVVQ GtqsoQB5iSNHCv4gXVdT2BNdNbYEFk0XA1Cvw/AG9uh82lXbyMFdhellXq6tNYDfem5+oMD85 CYOnODstZ+Ed9BX03LnRxcqNA/2AppTyeIXZw0sAJBdkqvERlj52bOx6xsXW+sLkyHnDaVut4 dHn3xu9Q2fVgW+2Dd89Sf5gOHJzcbc4DLDCY/n8bvrqzHZQkv5PqF8ieyvOxEmG6xC2T892UX JzQoQVbJdqnse0GuK+qPgEzWAc3C8vCb/r8E2iGBQu89UBAR9GLgpzNKaV9R+1DttEhvup4vq ejgQI/57hYWFavNb8OTNM/4v2KKhNfy6TL0/Ap8qH7jI1tRz7h+ard1IvNVlZgI+BRiH1yQlg lVzxWK/3nXb0SGP0xyO2X1C5BIE+owmlRf75Ngsz7/WIUSuCLeRMMKVJBOl7gcXVMK1PZpwEN Ta+zqAPUwgndxQlOWRu4A1WN4/VklXDCYLXGJq9BPypK54A0CrGYKpUlW3T1ZyWCrSMTiNyng 0/n/V3iFmSbhmqnlMdIBfVjzcb4BXxmGMzmyceIZbe1jl7f2AMyz3pZsv6vlQCPjAhYnHncQH LOiXH8L/G9/Y5q8pUqPHbAxihsHdQ+hzpFRXdZPYIQL8qnr3tkV3mWJqbqDzcaEzcS9CA7tqD +gU6TeSGZIaQ5H8txVA2YYR4/3BgZj5o6aa9ZPJLtChU5CGyro= 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: On Thu, May 21, 2020 at 11:22 AM Naresh Kamboju wrote: > On Thu, 21 May 2020 at 00:39, Chris Down wrote: > > Since you have i386 hardware available, and I don't, could you please apply > > only "avoid stale protection" again and check if it only happens with that > > commit, or requires both? That would help narrow down the suspects. Note that Naresh is running an i386 kernel on regular 64-bit hardware that most people have access to. > kernel config link, > https://builds.tuxbuild.com/8lg6WQibcwtQRRtIa0bcFA/kernel.config Do you know if the same bug shows up running a kernel with that configuration in qemu? I would expect it to, and that would make it much easier to reproduce. I would also not be surprised if it happens on all architectures but only shows up on the 32-bit arm and x86 machines first because they have a rather limited amount of lowmem. Maybe booting a 64-bit kernel with "mem=512M" and then running "dd if=/dev/sda of=/dev/null bs=1M" will also trigger it. I did not attempt to run this myself. Arnd