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=-6.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SPF_PASS,URIBL_BLOCKED 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 E517AC43387 for ; Wed, 19 Dec 2018 10:03:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id BE2DF218A6 for ; Wed, 19 Dec 2018 10:03:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728753AbeLSKDe (ORCPT ); Wed, 19 Dec 2018 05:03:34 -0500 Received: from mga01.intel.com ([192.55.52.88]:62621 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727920AbeLSKDe (ORCPT ); Wed, 19 Dec 2018 05:03:34 -0500 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by fmsmga101.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 19 Dec 2018 02:03:33 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.56,372,1539673200"; d="scan'208";a="305048790" Received: from shao2-debian.sh.intel.com (HELO [10.239.13.6]) ([10.239.13.6]) by fmsmga005.fm.intel.com with ESMTP; 19 Dec 2018 02:03:33 -0800 Subject: Re: [LKP] 5404a7f1c2 [ 90.902541] watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [swapper:1] To: Matthew Wilcox Cc: linux-kernel@vger.kernel.org, LKP References: <20181218002028.GG23332@shao2-debian> <20181218121710.GT10600@bombadil.infradead.org> From: Rong Chen Message-ID: <38ee8a35-1bb3-7a63-8ef6-75f0ff46d198@intel.com> Date: Wed, 19 Dec 2018 18:03:45 +0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.4.0 MIME-Version: 1.0 In-Reply-To: <20181218121710.GT10600@bombadil.infradead.org> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Content-Language: en-US Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 12/18/2018 08:17 PM, Matthew Wilcox wrote: > On Tue, Dec 18, 2018 at 08:20:28AM +0800, kernel test robot wrote: >> Greetings, >> >> 0day kernel testing robot got the below dmesg and the first bad commit is >> >> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master >> >> commit 5404a7f1c21cfda061712bedf2d06cc0f6c755e9 > I feel like you're wasting my time. This is the fourth time in a row > you've reported something I can't reproduce. At least this time the > instructions work, but I've tried it a dozen times and it doesn't produce > the error you're showing. > > $ git branch > * (HEAD detached at 5404a7f1c21c) > ... > [ 0.000000] Linux version 4.20.0-rc1-00012-g5404a7f1c21c (willy@bobo) (gcc version 8.2.0 (Debian 8.2.0-9)) #4 Mon Dec 17 23:28:21 EST 2018 > ... > [ 9.848471] test_uuid: all 18 tests passed > [ 11.019267] XArray: 19496249 of 19496249 tests passed > > Your logs show it failing every time. I can't help but wonder if it's > something else in your setup that's causing it to fail -- maybe the > machines doing the testing are overloaded? Please accept my apologies for taking your time, it might be a false positive, we have uploaded the original bzImage(https://download.01.org/0day-ci/lkp-qemu/fbc/5404a7f1c21cfda061712bedf2d06cc0f6c755e9/) for your reference. Best Regards, Rong Chen