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 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 AA092C76191 for ; Mon, 22 Jul 2019 01:39:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7E41520659 for ; Mon, 22 Jul 2019 01:39:17 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="cPo2tFvm" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728574AbfGVBhu (ORCPT ); Sun, 21 Jul 2019 21:37:50 -0400 Received: from mail-ua1-f66.google.com ([209.85.222.66]:36599 "EHLO mail-ua1-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726233AbfGVBht (ORCPT ); Sun, 21 Jul 2019 21:37:49 -0400 Received: by mail-ua1-f66.google.com with SMTP id v20so14697687uao.3 for ; Sun, 21 Jul 2019 18:37:48 -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=/YkkaXfp503K6bLavwX+qLvL6w0rpc7OLS8RSOtuP+M=; b=cPo2tFvmLuL6fLvqjzIrpG5LQd6ZWvV9aljHPmVYV9oIi91hq7SbO+hBg0Ef1tnZv/ y8Kpw/wqFcD4YVj4iq6eINMCPzxoCoeL556+nFs/cIezGZvZ26tghKRDHxKgo2v3m1P6 a3xfjEZCDBscay3d0wlHtY7gFCrahakcsuViTLI4gk2ISuSIXrCpN/fstZxpNPyaKp8p HwfNUYROO68VNeFQ6QD8mC0YCspXYUWalaES/UqK7EPG5+Z8uh2drVV287yRExzoBTzG X7GeixClBJda7OLDJWQQCK6lN3ZwIHtmTkBmnb8GWsbxRDOHRrKqV8FWLZQmEBR4pXmO Ox5g== 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=/YkkaXfp503K6bLavwX+qLvL6w0rpc7OLS8RSOtuP+M=; b=cFRXz0jVksUu2dvVcm5sH7i7y7WBivna7O7/yNE/HwCKPObhver8p07xfuAeKaKPr/ jmXSAraZAhxESAe4VjMRpm5+BhHnklPby0xl+MCjqv9DolsXGD8k9ZcKWfzkJeqWuirb V3gJgpuKevXJj8zewBQmpwN5JL5/XZAOVMoqWnZYoNwd2ZhL1c0+Cwjs5AuTGB+n/df8 l6Yr3hzBQENhS42P5YAbGXJbcT2hRFbeMPAYiyqtt/C6tSx5HUuGcp1Kx/fHM2HURE6h mecNZHJd9YPvrY8tEN9ReIrQ3m/gUy7ZZdsg87Nz21i7Ej97jU1+4j48tg6ndpQAvPlT J9UQ== X-Gm-Message-State: APjAAAXaA7Fm5Cqa/gXKmYLwmM0Xs0S982Afl+s1Wzla57d+GrIoPRWG lRRrDIMZlwy7u5xQ+DMfRkhe6LTAtvRGX57/7j0= X-Google-Smtp-Source: APXvYqxLgColy907bv+RwBJRyVN1Bx58/q3rCSAwiU5gvj3bLTrGLzMLnM+/DiRXaLqljPpql6cWCfolPagxy7+VP3s= X-Received: by 2002:ab0:70b1:: with SMTP id q17mr15913997ual.100.1563759468363; Sun, 21 Jul 2019 18:37:48 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: From: huang ying Date: Mon, 22 Jul 2019 09:37:37 +0800 Message-ID: Subject: Re: kernel BUG at mm/swap_state.c:170! To: Mikhail Gavrilov Cc: Linux List Kernel Mailing , linux-mm@kvack.org, Huang Ying Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, Mikhail, On Wed, May 29, 2019 at 12:05 PM Mikhail Gavrilov wrote: > > Hi folks. > I am observed kernel panic after update to git tag 5.2-rc2. > This crash happens at memory pressing when swap being used. > > Unfortunately in journalctl saved only this: > > May 29 08:02:02 localhost.localdomain kernel: page:ffffe90958230000 > refcount:1 mapcount:1 mapping:ffff8f3ffeb36949 index:0x625002ab2 > May 29 08:02:02 localhost.localdomain kernel: anon > May 29 08:02:02 localhost.localdomain kernel: flags: > 0x17fffe00080034(uptodate|lru|active|swapbacked) > May 29 08:02:02 localhost.localdomain kernel: raw: 0017fffe00080034 > ffffe90944640888 ffffe90956e208c8 ffff8f3ffeb36949 > May 29 08:02:02 localhost.localdomain kernel: raw: 0000000625002ab2 > 0000000000000000 0000000100000000 ffff8f41aeeff000 > May 29 08:02:02 localhost.localdomain kernel: page dumped because: > VM_BUG_ON_PAGE(entry != page) > May 29 08:02:02 localhost.localdomain kernel: page->mem_cgroup:ffff8f41aeeff000 > May 29 08:02:02 localhost.localdomain kernel: ------------[ cut here > ]------------ > May 29 08:02:02 localhost.localdomain kernel: kernel BUG at mm/swap_state.c:170! I am trying to reproduce this bug. Can you give me some information about your test case? Best Regards, Huang, Ying