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=-8.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS 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 E2702C433E0 for ; Wed, 27 Jan 2021 09:22:43 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 40FE32076E for ; Wed, 27 Jan 2021 09:22:43 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 40FE32076E Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=semihalf.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 722B76B0006; Wed, 27 Jan 2021 04:22:42 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 6AABF6B0008; Wed, 27 Jan 2021 04:22:42 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 574176B000A; Wed, 27 Jan 2021 04:22:42 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0093.hostedemail.com [216.40.44.93]) by kanga.kvack.org (Postfix) with ESMTP id 3CBDE6B0006 for ; Wed, 27 Jan 2021 04:22:42 -0500 (EST) Received: from smtpin20.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay01.hostedemail.com (Postfix) with ESMTP id 06FB6180ACF9A for ; Wed, 27 Jan 2021 09:22:42 +0000 (UTC) X-FDA: 77751014964.20.toy10_1e0041a27595 Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin20.hostedemail.com (Postfix) with ESMTP id DBF00180BF308 for ; Wed, 27 Jan 2021 09:22:41 +0000 (UTC) X-HE-Tag: toy10_1e0041a27595 X-Filterd-Recvd-Size: 3613 Received: from mail-pl1-f180.google.com (mail-pl1-f180.google.com [209.85.214.180]) by imf24.hostedemail.com (Postfix) with ESMTP for ; Wed, 27 Jan 2021 09:22:41 +0000 (UTC) Received: by mail-pl1-f180.google.com with SMTP id r4so692457pls.11 for ; Wed, 27 Jan 2021 01:22:41 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=semihalf-com.20150623.gappssmtp.com; s=20150623; h=mime-version:from:date:message-id:subject:to:cc; bh=JvxU13iYjcjDg03AytB70/7UdozftYcu83UQXA1xXRI=; b=WVArURekNUc5zR9702ut7h3QIJ8hu1EjcJhfCXKvHJ3Emzby9e4OjRFIg0Sffc6UHe MEYp8Z7Eq9IyoBsFain4rFvQYMmf68+LEdSp3IMuri/qP37+4Dw2uJJf7lv/dzHSpACr p1r88bP7sQp2Yz2AucA8oLuLhXLdG4mqixDJgAp0RpojHmzoeLEvxbrPKl8AZjpnln/x Tp8waBApl9IrWFNIvpVOyWd/R5jSvaS9QyUL0RvPgELgcW4DfphO+UztjcUOGysU0g0Y nW8bgJK12L7BJ0iKVLwDy9cKX4E83X3pCEaIEhDP8Nsf0Qm3I9VJpHVBCzxgjFYQGm52 fc0A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to:cc; bh=JvxU13iYjcjDg03AytB70/7UdozftYcu83UQXA1xXRI=; b=Bfbjos8j/DT0wIu7A8uJ16+bR7bu6Tsnn3wG25aHEpX7OKP21iMYP9s2kCzurLFOd4 oSomc0RYAF4WH1KMbq6QTK8NSkaoc06L/mq6AloubodFltXeKFElN1VHspgmySFgjcke CU91HCfBLT1AfldYoOMZ6GMXpk/ewJ/mbUvuXPozohmn2/xsCVBgaoJgM3LOjjNkJvDM Dh5RBE+cKdjnnp9s8IWsSL8l/9FuxLWuyMec+0IGibSVQCeICbHqD965P/nqDwt0SMfD CnYToUOCeP9Hn8EkMqW5jVDgUCWFmbKb5CvkJISFXcMfldy3JUA7wlcFPSMFbT5iFHk7 KsdA== X-Gm-Message-State: AOAM532lI0Ps8bnCEYyfwFk8kj55erjg5MfsNlvye9NWv/wSHTeuNzfL DtbYNPj8ZZO1qCwgfz7zJef1e1n6BZe/pqmcEuVdwQ== X-Google-Smtp-Source: ABdhPJwXBVuqtmdTUg6vUXswg11zryH6Q7OTA7MxMhew+XcVk2JuZDMqJgTJZLwer+K3GuxhuW6y+nzpEyEqAS6+n58= X-Received: by 2002:a17:90a:9483:: with SMTP id s3mr4651822pjo.85.1611739360328; Wed, 27 Jan 2021 01:22:40 -0800 (PST) MIME-Version: 1.0 From: =?UTF-8?Q?=C5=81ukasz_Majczak?= Date: Wed, 27 Jan 2021 10:22:29 +0100 Message-ID: Subject: PROBLEM: Crash after mm: fix initialization of struct page for holes in memory layout To: Andrew Morton , linux-mm@kvack.org, linux-kernel@vger.kernel.org, Mike Rapoport Cc: =?UTF-8?Q?Rados=C5=82aw_Biernacki?= , Marcin Wojtas , Alex Levin , Guenter Roeck , Jesse Barnes Content-Type: text/plain; charset="UTF-8" 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: Crash after mm: fix initialization of struct page for holes in memory layout Hi, I was trying to run v5.11-rc5 on my Samsung Chromebook Pro (Caroline), but I've noticed it has crashed - unfortunately it seems to happen at a very early stage - No output to the console nor to the screen, so I have started a bisect (between 5.11-rc4 - which works just find - and 5.11-rc5), bisect results points to: d3921cb8be29 mm: fix initialization of struct page for holes in memory layout Reproduction is just to build and load the kernel. If it will help any how I am attaching: - /proc/cpuinfo (from healthy system): https://gist.github.com/semihalf-majczak-lukasz/3517867bf39f07377c1a785b64a97066 - my .config file (for a broken system): https://gist.github.com/semihalf-majczak-lukasz/584b329f1bf3e43b53efe8e18b5da33c If there is anything I could add/do/test to help fix this please let me know. Best regards Lukasz