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=-0.6 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,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 33C57C5CFE7 for ; Wed, 11 Jul 2018 17:50:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id DEE1220C0D for ; Wed, 11 Jul 2018 17:50:26 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="qU46W3Da" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org DEE1220C0D Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389110AbeGKRzt (ORCPT ); Wed, 11 Jul 2018 13:55:49 -0400 Received: from mail-oi0-f42.google.com ([209.85.218.42]:41659 "EHLO mail-oi0-f42.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732456AbeGKRzt (ORCPT ); Wed, 11 Jul 2018 13:55:49 -0400 Received: by mail-oi0-f42.google.com with SMTP id k12-v6so50798519oiw.8 for ; Wed, 11 Jul 2018 10:50:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc; bh=zYmOuBgrQ/vm5fUHaH+kEgVL+D0gLbXjrHyTqEbP1jk=; b=qU46W3DamO5CUd4Dh7nFfJdl8IwMhDzY9LDQp/irBm4v8GNdyVzOU4MSvizyFM0eEM VCimbDeoYl/zsMIE0ynOekmwlZRoCA3yWY1JvkolqnGefK1BZNaJoOaPJUuiu/YqFXkx gkaXtnJhEe6mAeuEn4A0rufU6rwq6Gyp7gqIW7JkDmAOOnlVvQYJvzJNgU/4xD46LaJb eh/cdhWN4nOIAO4j8rMDH73JCPKa8GGJeiAUPoVFtOooks+C6rdn5iyhFAxIvLdMnQWT 6uTtvFvXS5oP9QEVWiOuryHKu73g8ypHIhfOMC3FR5KV6AjbhzN5Cz9AhDWLRkMLbU5f jrnA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to:cc; bh=zYmOuBgrQ/vm5fUHaH+kEgVL+D0gLbXjrHyTqEbP1jk=; b=nC9OlC8j4EwtvXZjTTABW1byR6ylvXyvLliU6M6NbGf8yyjLlgDTkuIrr8nYwn6n36 Y9Q8/A5wBxBN2bDVMCZJsvx9wWi3yREQjVA6tqS7gjl5un6y4y6W+bSAE3OkWaLRNHHX fYDqrFqV2d3SgJcrjHsDEhMHZNfSrzKs0yqcVJBmsCIZljpk5/N4MKnK7mDy3uZPWDjH 2yopkz2EDpTRL1mEt7mWK8vOIkXETxmDAtSefu1l56l/KUfVnwJG5AjboK/h+zajUGck 8HqWDylhmD/Lt3otHIlIF+JWFO2BvQg7XPhyMCVHq5K4fGrZXGd8z20sL+hDpObDLJNC nJgA== X-Gm-Message-State: AOUpUlEC36rIOouTr7MZEvJtIgPuKqTNUgwMnVkd/qeMPz40LiF483Ns VLKx27Lv1HZ7knUtwUoLe72Qe4IimRrdsqoimxU= X-Google-Smtp-Source: AAOMgpcMkyAHvTyCl4XhKhQ/kKKqLUmgBHg7SEFgH5hSIG87bl9H2i3oJNq4N0vd8BYhSkNk/uPvuezfCrmzXWopHgc= X-Received: by 2002:aca:b857:: with SMTP id i84-v6mr274659oif.279.1531331423782; Wed, 11 Jul 2018 10:50:23 -0700 (PDT) MIME-Version: 1.0 Received: by 2002:a4a:c984:0:0:0:0:0 with HTTP; Wed, 11 Jul 2018 10:50:23 -0700 (PDT) In-Reply-To: <35f0b060-b3c0-528e-ee96-811f55b62635@intel.com> References: <50d6bb50-5fa4-33d1-1f88-3844d0237f16@intel.com> <7db385ef-0940-8f28-87b0-828921dd2f1d@intel.com> <9548e10a-7403-425e-bf1f-b1eb9d055d99@intel.com> <2022d212-62f2-a163-2493-abecfbafa07b@intel.com> <35f0b060-b3c0-528e-ee96-811f55b62635@intel.com> From: "H.J. Lu" Date: Wed, 11 Jul 2018 10:50:23 -0700 Message-ID: Subject: Re: Kernel 4.17.4 lockup To: Dave Hansen Cc: "H. Peter Anvin" , LKML , Andy Lutomirski , Mel Gorman , Andrew Morton , Rik van Riel , Minchan Kim 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 On Wed, Jul 11, 2018 at 10:43 AM, Dave Hansen wrote: > On 07/11/2018 10:29 AM, H.J. Lu wrote: >>> I have seen it on machines with various amounts of cores and RAMs. >>> It triggers the fastest on 8 cores with 6GB RAM reliably. >> Here is the first kernel message. > > Does it trigger better with more RAM or less? It triggers much more with 6GB RAM than with 32GB and 64GB. -- H.J.