Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757039Ab3DPH5K (ORCPT ); Tue, 16 Apr 2013 03:57:10 -0400 Received: from mail-da0-f43.google.com ([209.85.210.43]:40464 "EHLO mail-da0-f43.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755262Ab3DPH5I (ORCPT ); Tue, 16 Apr 2013 03:57:08 -0400 Message-ID: <516D044B.3040300@gmail.com> Date: Tue, 16 Apr 2013 15:56:59 +0800 From: Simon Jeons User-Agent: Mozilla/5.0 (X11; Linux i686; rv:17.0) Gecko/20130329 Thunderbird/17.0.5 MIME-Version: 1.0 To: Heiko Carstens CC: Zhouping Liu , linux-mm@kvack.org, LKML , caiqian , Caspar Zhang , Martin Schwidefsky Subject: Re: [BUG][s390x] mm: system crashed References: <156480624.266924.1365995933797.JavaMail.root@redhat.com> <2068164110.268217.1365996520440.JavaMail.root@redhat.com> <20130415055627.GB4207@osiris> <516B9B57.6050308@redhat.com> <20130416075047.GA4184@osiris> In-Reply-To: <20130416075047.GA4184@osiris> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 4029 Lines: 76 Hi Heiko, On 04/16/2013 03:50 PM, Heiko Carstens wrote: > On Mon, Apr 15, 2013 at 02:16:55PM +0800, Zhouping Liu wrote: >> On 04/15/2013 01:56 PM, Heiko Carstens wrote: >>> On Sun, Apr 14, 2013 at 11:28:40PM -0400, Zhouping Liu wrote: >>>> � 16109.346170¨ Call Trace: >>>> � 16109.346179¨ (� <0000000000100920>¨ show_trace+0x128/0x12c) >>>> � 16109.346195¨ � <00000000001cd320>¨ rcu_check_callbacks+0x458/0xccc >>>> � 16109.346209¨ � <0000000000140f2e>¨ update_process_times+0x4a/0x74 >>>> � 16109.346222¨ � <0000000000199452>¨ tick_sched_handle.isra.12+0x5e/0x70 >>>> � 16109.346235¨ � <00000000001995aa>¨ tick_sched_timer+0x6a/0x98 >>>> � 16109.346247¨ � <000000000015c1ea>¨ __run_hrtimer+0x8e/0x200 >>>> � 16109.346381¨ � <000000000015d1b2>¨ hrtimer_interrupt+0x212/0x2b0 >>>> � 16109.346385¨ � <00000000001040f6>¨ clock_comparator_work+0x4a/0x54 >>>> � 16109.346390¨ � <000000000010d658>¨ do_extint+0x158/0x15c >>>> � 16109.346396¨ � <000000000062aa24>¨ ext_skip+0x38/0x3c >>>> � 16109.346404¨ � <00000000001153c8>¨ smp_yield_cpu+0x44/0x48 >>>> � 16109.346412¨ (� <000003d10051aec0>¨ 0x3d10051aec0) >>>> � 16109.346457¨ � <000000000024206a>¨ __page_check_address+0x16a/0x170 >>>> � 16109.346466¨ � <00000000002423a2>¨ page_referenced_one+0x3e/0xa0 >>>> � 16109.346501¨ � <000000000024427c>¨ page_referenced+0x32c/0x41c >>>> � 16109.346510¨ � <000000000021b1dc>¨ shrink_page_list+0x380/0xb9c >>>> � 16109.346521¨ � <000000000021c0a6>¨ shrink_inactive_list+0x1c6/0x56c >>>> � 16109.346532¨ � <000000000021c69e>¨ shrink_lruvec+0x252/0x56c >>>> � 16109.346542¨ � <000000000021ca44>¨ shrink_zone+0x8c/0x1bc >>>> � 16109.346553¨ � <000000000021d080>¨ balance_pgdat+0x50c/0x658 >>>> � 16109.346564¨ � <000000000021d318>¨ kswapd+0x14c/0x470 >>>> � 16109.346576¨ � <0000000000158292>¨ kthread+0xda/0xe4 >>>> � 16109.346656¨ � <000000000062a5de>¨ kernel_thread_starter+0x6/0xc >>>> � 16109.346682¨ � <000000000062a5d8>¨ kernel_thread_starter+0x0/0xc >>>> [-- MARK -- Fri Apr 12 06:15:00 2013] >>>> � 16289.386061¨ INFO: rcu_sched self-detected stall on CPU { 0} (t=42010 jiffies >>>> g=89766 c=89765 q=10627) >>> Did the system really crash or did you just see the rcu related warning(s)? >> I just check it again, actually at first the system didn't really >> crash, but the system is very slow in response. >> and the reproducer process can't be killed, after I did some common >> actions such as 'ls' 'vim' etc, the system >> seemed to be really crashed, no any response. >> >> also in the previous testing, I can remember that the system would >> be no any response for a long time, just only >> repeatedly print out the such above 'Call Trace' into console. > Ok, thanks. > Just a couple of more questions: did you see this also on other archs, or just > s390 (if you tried other platforms at all). > > If you have some time, could you please repeat your test with the kernel > command line option " user_mode=home "? What's the meaning of this command line? I can't find it in Documentation/kernel-parameters.txt/ > > As far as I can tell there was only one s390 patch merged that was > mmap related: 486c0a0bc80d370471b21662bf03f04fbb37cdc6 "s390/mm: Fix crst > upgrade of mmap with MAP_FIXED". > Even though I don't think it explains the bug you've seen it might be worth > to try to revert it. > > And at last, can you share your kernel config? > > Thanks, > Heiko > > -- > To unsubscribe, send a message with 'unsubscribe linux-mm' in > the body to majordomo@kvack.org. For more info on Linux MM, > see: http://www.linux-mm.org/ . > Don't email: email@kvack.org -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/