linux-kernel - [BUG][s390x] mm: system crashed

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Date:	Sun, 14 Apr 2013 23:28:40 -0400 (EDT)
From:	Zhouping Liu <zliu@...hat.com>
To:	linux-mm@...ck.org, LKML <linux-kernel@...r.kernel.org>
Cc:	caiqian <caiqian@...hat.com>, Caspar Zhang <czhang@...hat.com>
Subject: [BUG][s390x] mm: system crashed

Hi All,

I hit the below crashed when doing memory related tests[1] on s390x:

--------------- snip ---------------------
� 15929.351639¨  � <000000000021c0a6>¨ shrink_inactive_list+0x1c6/0x56c 
� 15929.351647¨  � <000000000021c69e>¨ shrink_lruvec+0x252/0x56c 
� 15929.351654¨  � <000000000021ca44>¨ shrink_zone+0x8c/0x1bc 
� 15929.351662¨  � <000000000021d080>¨ balance_pgdat+0x50c/0x658 
� 15929.351671¨  � <000000000021d318>¨ kswapd+0x14c/0x470 
� 15929.351680¨  � <0000000000158292>¨ kthread+0xda/0xe4 
� 15929.351690¨  � <000000000062a5de>¨ kernel_thread_starter+0x6/0xc 
� 15929.351700¨  � <000000000062a5d8>¨ kernel_thread_starter+0x0/0xc 
� 16109.346061¨ INFO: rcu_sched self-detected stall on CPU { 0}  (t=24006 jiffies 
 g=89766 c=89765 q=10544) 
� 16109.346101¨ CPU: 0 Tainted: G      D      3.9.0-rc6+ #1 
� 16109.346106¨ Process kswapd0 (pid: 28, task: 000000003b2a0000, ksp: 000000003b 
2ab8c0) 
� 16109.346110¨        000000000001bb60 000000000001bb70 0000000000000002 0000000 
000000000 
       000000000001bc00 000000000001bb78 000000000001bb78 00000000001009ca 
       0000000000000000 0000000000002930 000000000000000a 000000000000000a 
       000000000001bbc0 000000000001bb60 0000000000000000 0000000000000000 
       000000000063bb18 00000000001009ca 000000000001bb60 000000000001bbb0 
� 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) 
-------------- snip ----------------------

The testing system has 1Gb RAM, kernel is new latest mainline.
please let me know if you need any more info.

[1] reproducer is come from LTP: https://github.com/linux-test-project/ltp/blob/master/testcases/kernel/mem/mtest06/mmap2.c
    and execute it using this command: `./mmap2 -x 0.002 -a -p`

-- 
Thanks,
Zhouping
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