From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753825AbdBDHse (ORCPT ); Sat, 4 Feb 2017 02:48:34 -0500 Received: from mga05.intel.com ([192.55.52.43]:11100 "EHLO mga05.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753718AbdBDHsd (ORCPT ); Sat, 4 Feb 2017 02:48:33 -0500 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.33,333,1477983600"; d="scan'208";a="930050961" Date: Sat, 4 Feb 2017 15:47:57 +0800 From: Ye Xiaolong To: Peter Zijlstra Cc: Ingo Molnar , Linus Torvalds , Mike Galbraith , Thomas Gleixner , LKML , Stephen Rothwell , lkp@01.org Subject: Re: [sched/clock] 9881b024b7: WARNING:at_kernel/sched/clock.c:#set_sched_clock_stable Message-ID: <20170204074757.GG12121@yexl-desktop> References: <20170125211406.GA123384@inn.lkp.intel.com> <20170126100619.GV6515@twins.programming.kicks-ass.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20170126100619.GV6515@twins.programming.kicks-ass.net> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 01/26, Peter Zijlstra wrote: >On Thu, Jan 26, 2017 at 05:14:06AM +0800, kernel test robot wrote: >> >> FYI, we noticed the following commit: >> >> commit: 9881b024b7d7671f6a014091bc96506b89081802 ("sched/clock: Delay switching sched_clock to stable") >> https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master >> > >> [ 1457.700884] >> [ 1457.701518] masked ExtINT on CPU#1 >> [ 1457.701523] ------------[ cut here ]------------ >> [ 1457.701527] WARNING: CPU: 1 PID: 0 at kernel/sched/clock.c:114 set_sched_clock_stable+0x66/0x70 >> [ 1457.701527] Modules linked in: rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver netconsole sr_mod cdrom sg intel_powerclamp coretemp kvm_intel kvm irqbypass crct10dif_pclmul crc32_pclmul crc32c_intel snd_hda_codec_realtek ghash_clmulni_intel ppdev mxm_wmi pcbc snd_hda_codec_generic aesni_intel crypto_simd glue_helper cryptd pcspkr ahci libahci firewire_ohci libata snd_hda_intel firewire_core crc_itu_t snd_hda_codec snd_hda_core snd_hwdep snd_pcm snd_timer snd soundcore i7core_edac edac_core shpchp winbond_cir rc_core floppy parport_pc parport wmi acpi_cpufreq ip_tables >> [ 1457.701544] CPU: 1 PID: 0 Comm: swapper/1 Tainted: G W I 4.10.0-rc3-00259-g9881b02 #1 >> [ 1457.701544] Hardware name: /DX58SO, BIOS SOX5810J.86A.4934.2010.0129.1220 01/29/2010 >> [ 1457.701545] Call Trace: >> [ 1457.701549] dump_stack+0x63/0x8a >> [ 1457.701550] __warn+0xcb/0xf0 >> [ 1457.701551] warn_slowpath_null+0x1d/0x20 >> > >Please do _NOT_ truncate WARNs, they have nice start and end markers for >a purpose. Thanks for the reminder, we've improved 0day robot's logic to show the whole call trace instead. Thanks, Xiaolong > >In any case, this should be fixed by commit: acb04058de49 ("sched/clock: Fix hotplug crash")