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

[Heiko Carstens]

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