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=-12.9 required=3.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1, USER_IN_DEF_DKIM_WL 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 BDBAEC433DF for ; Sun, 11 Oct 2020 20:23:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 87DC7215A4 for ; Sun, 11 Oct 2020 20:23:28 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="se4EGX91" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729376AbgJKUX1 (ORCPT ); Sun, 11 Oct 2020 16:23:27 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40890 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729223AbgJKUXX (ORCPT ); Sun, 11 Oct 2020 16:23:23 -0400 Received: from mail-ot1-x331.google.com (mail-ot1-x331.google.com [IPv6:2607:f8b0:4864:20::331]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 74D64C0613D6 for ; Sun, 11 Oct 2020 13:23:17 -0700 (PDT) Received: by mail-ot1-x331.google.com with SMTP id m13so13950881otl.9 for ; Sun, 11 Oct 2020 13:23:17 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=date:from:to:cc:subject:in-reply-to:message-id:references :user-agent:mime-version; bh=tRceXdKhB8YrGa5UF3V+9BiDoHJDhSAujZzJPaxD6i8=; b=se4EGX91wXk2NZMva6HzFZt9bCZz8RMcBbrzoCXtUq3w7fZQ1NYTEx0+dle/di2F1+ UMlSTWzAs2o5+wpceMyNbEGN2hTYHQpNNfyByKl5nEcsn66SyilMSjwsZ4cGPfkmBdYF yp6Nw97A01gYD5ub1/INhnhY970Z/HlYmbvK/LaNIIE3sBoaVVhmmclnwCCPgaULh6vY IxIhvUHsa77LoIoogl9eveMNpldGFUGa3mjyOxtKDwI1N8AyBQEUvYbZyS6WJk8fkRN4 /evvAYdtKBs0YAniCPIKXpFnj29oVuIWyLaL/rGXSXn8Gch+kyM/AJyBMyFmUyuNfgxn vslA== 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:in-reply-to:message-id :references:user-agent:mime-version; bh=tRceXdKhB8YrGa5UF3V+9BiDoHJDhSAujZzJPaxD6i8=; b=NzkjLW4WGuCZxK4l1Wb1o5auVYXp/2Ds4p9ep7ub67wWG2nd3m2bTZUH4KxjNnlYj4 oPvz2+HSYoBOnTi8AQNuLKvXD1+86fwmbQtmI5d1eCtoe7ao1ggRW0qxTL22Yx2wHDVu 39wVDowyU2Mkfe1f8WJEm44nW2txx5Np2IirrabT/x6S/Lp6WkGIXC5IY+Lr9tJS+rHF FItRfFWg3WPO3B0usv7oywGZeAghQF3ufHc4zCZqfPvJgRPBib3BmqCHelq0n+vvl1gO yh1OUcGHK9hXmI3hRmSY5JlPUvbeN615JNWD+46TuDe3iOlhigVMPDT3UXaW8J3Cdzs9 VmAQ== X-Gm-Message-State: AOAM531eo/cjGUwqmgDprfQy6BwicExsGWjizToidJSNXcIzxE1x1aKT FBo1/crmriqRMuTRDcOXCh0zbg== X-Google-Smtp-Source: ABdhPJxJevS9phfHNPbujhgUz0c2zM32mOg8hpn2iOLSemBV/AGaC7PVIMJ1K7/V4AWK3zP1Bm9Msg== X-Received: by 2002:a05:6830:149:: with SMTP id j9mr15110595otp.187.1602447796574; Sun, 11 Oct 2020 13:23:16 -0700 (PDT) Received: from eggly.attlocal.net (172-10-233-147.lightspeed.sntcca.sbcglobal.net. [172.10.233.147]) by smtp.gmail.com with ESMTPSA id j34sm8210899otc.15.2020.10.11.13.23.14 (version=TLS1 cipher=ECDHE-ECDSA-AES128-SHA bits=128/128); Sun, 11 Oct 2020 13:23:15 -0700 (PDT) Date: Sun, 11 Oct 2020 13:23:12 -0700 (PDT) From: Hugh Dickins X-X-Sender: hugh@eggly.anvils To: Qian Cai cc: Matthew Wilcox , linux-xfs@vger.kernel.org, linux-mm@kvack.org, akpm@linux-foundation.org, linux-s390@vger.kernel.org, heiko.carstens@de.ibm.com, borntraeger@de.ibm.com, darrick.wong@oracle.com, kirill@shutemov.name, peterx@redhat.com, yang.shi@linux.alibaba.com, hch@lst.de, linux-kernel@vger.kernel.org, songliubraving@fb.com Subject: Re: VM_BUG_ON_PAGE(page_to_pgoff(page) != offset) on s390 In-Reply-To: <20200617031906.GA5065@lca.pw> Message-ID: References: <20200616013309.GB815@lca.pw> <20200616014859.GY8681@bombadil.infradead.org> <20200617031906.GA5065@lca.pw> User-Agent: Alpine 2.11 (LSU 23 2013-08-11) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Adding a note to update this thread: the v5.9 tree now has 033b5d775511 ("mm/khugepaged: fix filemap page_to_pgoff(page) != offset") which fixes this VM_BUG_ON_PAGE (or data corruption) when CONFIG_NUMA is not set: we are hoping that may have have been the problem here.