Re: [BUG][s390x] mm: system crashed

[Heiko Carstens <heiko.carstens@de.ibm.com>]

On Sun, Apr 14, 2013 at 11:28:40PM -0400, Zhouping Liu wrote:
> Hi All,
> 
> I hit the below crashed when doing memory related tests[1] on s390x:
> 
> --------------- snip ---------------------
> i? 1/2  15929.351639A?  i? 1/2  <000000000021c0a6>A? shrink_inactive_list+0x1c6/0x56c 
> i? 1/2  15929.351647A?  i? 1/2  <000000000021c69e>A? shrink_lruvec+0x252/0x56c 
> i? 1/2  15929.351654A?  i? 1/2  <000000000021ca44>A? shrink_zone+0x8c/0x1bc 
> i? 1/2  15929.351662A?  i? 1/2  <000000000021d080>A? balance_pgdat+0x50c/0x658 
> i? 1/2  15929.351671A?  i? 1/2  <000000000021d318>A? kswapd+0x14c/0x470 
> i? 1/2  15929.351680A?  i? 1/2  <0000000000158292>A? kthread+0xda/0xe4 
> i? 1/2  15929.351690A?  i? 1/2  <000000000062a5de>A? kernel_thread_starter+0x6/0xc 
> i? 1/2  15929.351700A?  i? 1/2  <000000000062a5d8>A? kernel_thread_starter+0x0/0xc 
> i? 1/2  16109.346061A? INFO: rcu_sched self-detected stall on CPU { 0}  (t=24006 jiffies 
>  g=89766 c=89765 q=10544) 
> i? 1/2  16109.346101A? CPU: 0 Tainted: G      D      3.9.0-rc6+ #1 
> i? 1/2  16109.346106A? Process kswapd0 (pid: 28, task: 000000003b2a0000, ksp: 000000003b 
> 2ab8c0) 
> i? 1/2  16109.346110A?        000000000001bb60 000000000001bb70 0000000000000002 0000000 
> 000000000 
>        000000000001bc00 000000000001bb78 000000000001bb78 00000000001009ca 
>        0000000000000000 0000000000002930 000000000000000a 000000000000000a 
>        000000000001bbc0 000000000001bb60 0000000000000000 0000000000000000 
>        000000000063bb18 00000000001009ca 000000000001bb60 000000000001bbb0 
> i? 1/2  16109.346170A? Call Trace: 
> i? 1/2  16109.346179A? (i? 1/2  <0000000000100920>A? show_trace+0x128/0x12c) 
> i? 1/2  16109.346195A?  i? 1/2  <00000000001cd320>A? rcu_check_callbacks+0x458/0xccc 
> i? 1/2  16109.346209A?  i? 1/2  <0000000000140f2e>A? update_process_times+0x4a/0x74 
> i? 1/2  16109.346222A?  i? 1/2  <0000000000199452>A? tick_sched_handle.isra.12+0x5e/0x70 
> i? 1/2  16109.346235A?  i? 1/2  <00000000001995aa>A? tick_sched_timer+0x6a/0x98 
> i? 1/2  16109.346247A?  i? 1/2  <000000000015c1ea>A? __run_hrtimer+0x8e/0x200 
> i? 1/2  16109.346381A?  i? 1/2  <000000000015d1b2>A? hrtimer_interrupt+0x212/0x2b0 
> i? 1/2  16109.346385A?  i? 1/2  <00000000001040f6>A? clock_comparator_work+0x4a/0x54 
> i? 1/2  16109.346390A?  i? 1/2  <000000000010d658>A? do_extint+0x158/0x15c 
> i? 1/2  16109.346396A?  i? 1/2  <000000000062aa24>A? ext_skip+0x38/0x3c 
> i? 1/2  16109.346404A?  i? 1/2  <00000000001153c8>A? smp_yield_cpu+0x44/0x48 
> i? 1/2  16109.346412A? (i? 1/2  <000003d10051aec0>A? 0x3d10051aec0) 
> i? 1/2  16109.346457A?  i? 1/2  <000000000024206a>A? __page_check_address+0x16a/0x170 
> i? 1/2  16109.346466A?  i? 1/2  <00000000002423a2>A? page_referenced_one+0x3e/0xa0 
> i? 1/2  16109.346501A?  i? 1/2  <000000000024427c>A? page_referenced+0x32c/0x41c 
> i? 1/2  16109.346510A?  i? 1/2  <000000000021b1dc>A? shrink_page_list+0x380/0xb9c 
> i? 1/2  16109.346521A?  i? 1/2  <000000000021c0a6>A? shrink_inactive_list+0x1c6/0x56c 
> i? 1/2  16109.346532A?  i? 1/2  <000000000021c69e>A? shrink_lruvec+0x252/0x56c 
> i? 1/2  16109.346542A?  i? 1/2  <000000000021ca44>A? shrink_zone+0x8c/0x1bc 
> i? 1/2  16109.346553A?  i? 1/2  <000000000021d080>A? balance_pgdat+0x50c/0x658 
> i? 1/2  16109.346564A?  i? 1/2  <000000000021d318>A? kswapd+0x14c/0x470 
> i? 1/2  16109.346576A?  i? 1/2  <0000000000158292>A? kthread+0xda/0xe4 
> i? 1/2  16109.346656A?  i? 1/2  <000000000062a5de>A? kernel_thread_starter+0x6/0xc 
> i? 1/2  16109.346682A?  i? 1/2  <000000000062a5d8>A? kernel_thread_starter+0x0/0xc 
> [-- MARK -- Fri Apr 12 06:15:00 2013] 
> i? 1/2  16289.386061A? 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)?

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