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[Rafael David Tinoco <inaddy@xxxxxxxxxx>]

Public bug reported:

It was brought to my attention the following case:

Hardware name: HP ProLiant DL380p Gen8, BIOS P70 12/20/2013 
Kernel: 3.13.0-34 

Stack trace:

2189823.168958] INFO: NMI handler (perf_event_nmi_handler) took too long to run: 882.406 msecs 
[2189823.168974] Kernel panic - not syncing: An NMI occurred, please see the Integrated Management Log for details. 

[2189823.184283] CPU: 0 PID: 60396 Comm: ceph-osd Not tainted 3.13.0-34-generic #60-Ubuntu 
[2189823.194371] Hardware name: HP ProLiant DL380p Gen8, BIOS P70 12/20/2013 
[2189823.202794] 0007c7a1f01b74a3 ffff88081fa06dd0 ffffffff8171bd94 ffffffffa01672d8 
[2189823.212421] ffff88081fa06e48 ffffffff81714f95 0000000000000008 ffff88081fa06e58 
[2189823.221889] ffff88081fa06df8 ffffffff81c1c4c0 ffffc90006278072 0000000000000001 
[2189823.231361] Call Trace: 
[2189823.234597] <NMI> [<ffffffff8171bd94>] dump_stack+0x45/0x56 
[2189823.241996] [<ffffffff81714f95>] panic+0xc8/0x1d7 
[2189823.248152] [<ffffffffa01668fd>] hpwdt_pretimeout+0xdd/0xdd [hpwdt] 
[2189823.256251] [<ffffffff8101b7e9>] ? sched_clock+0x9/0x10 
[2189823.263054] [<ffffffff81725448>] nmi_handle.isra.3+0x88/0x180 
[2189823.270500] [<ffffffff817256fd>] do_nmi+0x1bd/0x340 
[2189823.276867] [<ffffffff817248b1>] end_repeat_nmi+0x1e/0x2e 
[2189823.283888] [<ffffffff810d7bf0>] ? futex_wait_queue_me+0x140/0x140 
[2189823.291874] [<ffffffff810d7bf0>] ? futex_wait_queue_me+0x140/0x140 
[2189823.299966] [<ffffffff810d7bf0>] ? futex_wait_queue_me+0x140/0x140

** Affects: linux (Ubuntu)
     Importance: Undecided
     Assignee: Rafael David Tinoco (inaddy)
         Status: In Progress


** Tags: cts

** Changed in: linux (Ubuntu)
     Assignee: (unassigned) => Rafael David Tinoco (inaddy)

** Changed in: linux (Ubuntu)
       Status: New => Fix Released

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https://bugs.launchpad.net/bugs/1416414

Title:
  Trusty + Intel E5-26xx + NMI handler (perf_event_nmi_handler) took too
  long to run

Status in linux package in Ubuntu:
  In Progress

Bug description:
  It was brought to my attention the following case:

  Hardware name: HP ProLiant DL380p Gen8, BIOS P70 12/20/2013 
  Kernel: 3.13.0-34 

  Stack trace:

  2189823.168958] INFO: NMI handler (perf_event_nmi_handler) took too long to run: 882.406 msecs 
  [2189823.168974] Kernel panic - not syncing: An NMI occurred, please see the Integrated Management Log for details. 

  [2189823.184283] CPU: 0 PID: 60396 Comm: ceph-osd Not tainted 3.13.0-34-generic #60-Ubuntu 
  [2189823.194371] Hardware name: HP ProLiant DL380p Gen8, BIOS P70 12/20/2013 
  [2189823.202794] 0007c7a1f01b74a3 ffff88081fa06dd0 ffffffff8171bd94 ffffffffa01672d8 
  [2189823.212421] ffff88081fa06e48 ffffffff81714f95 0000000000000008 ffff88081fa06e58 
  [2189823.221889] ffff88081fa06df8 ffffffff81c1c4c0 ffffc90006278072 0000000000000001 
  [2189823.231361] Call Trace: 
  [2189823.234597] <NMI> [<ffffffff8171bd94>] dump_stack+0x45/0x56 
  [2189823.241996] [<ffffffff81714f95>] panic+0xc8/0x1d7 
  [2189823.248152] [<ffffffffa01668fd>] hpwdt_pretimeout+0xdd/0xdd [hpwdt] 
  [2189823.256251] [<ffffffff8101b7e9>] ? sched_clock+0x9/0x10 
  [2189823.263054] [<ffffffff81725448>] nmi_handle.isra.3+0x88/0x180 
  [2189823.270500] [<ffffffff817256fd>] do_nmi+0x1bd/0x340 
  [2189823.276867] [<ffffffff817248b1>] end_repeat_nmi+0x1e/0x2e 
  [2189823.283888] [<ffffffff810d7bf0>] ? futex_wait_queue_me+0x140/0x140 
  [2189823.291874] [<ffffffff810d7bf0>] ? futex_wait_queue_me+0x140/0x140 
  [2189823.299966] [<ffffffff810d7bf0>] ? futex_wait_queue_me+0x140/0x140

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