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[Bug 1223055] Re: System Hangs With Kernel Migration Processes Consuming 100% CPU


To perform a bisect and identify the commit that introduced this, we
need to find the last good kernel and first bad kernel.  We now know 3.2
final has the bug.  Can you also test the 3.1 final kernel to see if it
has the bug:


If it does, please test the 3.0 final kernel:

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  System Hangs With Kernel Migration Processes Consuming 100% CPU

Status in “linux” package in Ubuntu:

Bug description:
  Once or twice a week, the system becomes non-responsive, with the
  mouse cursor tracking mouse movement but no keyboard response. Until
  today I would resort to using the kernel magic keys to reboot the
  system (R-E-I-S-U-B). Today I remotely logged in from another machine
  on the LAN and discovered that not only was the kernel alive and all
  processes running, but that the "migration/0" and "migration/1"
  processes were consuming 50% of the CPU each, as reported by top(1). I
  suspect this is why the system becomes non-responsive.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: linux-generic
  ProcVersionSignature: Ubuntu 3.2.0-53.81-generic 3.2.50
  Uname: Linux 3.2.0-53-generic i686
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
  ApportVersion: 2.0.1-0ubuntu17.4
  Architecture: i386
   /dev/snd/controlC1:  andy       2195 F.... pulseaudio
   /dev/snd/controlC0:  andy       2195 F.... pulseaudio
   Card hw:0 'Intel'/'HDA Intel at 0xee400000 irq 47'
     Mixer name	: 'Analog Devices AD1981'
     Components	: 'HDA:11d41981,17aa2025,00100200'
     Controls      : 21
     Simple ctrls  : 12
   Card hw:1 'U0x46d0x804'/'USB Device 0x46d:0x804 at usb-0000:00:1d.7-6.2.2, high speed'
     Mixer name	: 'USB Mixer'
     Components	: 'USB046d:0804'
     Controls      : 2
     Simple ctrls  : 1
   Simple mixer control 'Mic',0
     Capabilities: cvolume cvolume-joined cswitch cswitch-joined penum
     Capture channels: Mono
     Limits: Capture 0 - 6144
     Mono: Capture 4608 [75%] [24.00dB] [on]
   Card hw:29 'ThinkPadEC'/'ThinkPad Console Audio Control at EC reg 0x30, fw 79HT50WW-1.07'
     Mixer name	: 'ThinkPad EC 79HT50WW-1.07'
     Components	: ''
     Controls      : 2
     Simple ctrls  : 1
   Simple mixer control 'Console',0
     Capabilities: pvolume pvolume-joined pswitch pswitch-joined penum
     Playback channels: Mono
     Limits: Playback 0 - 14
     Mono: Playback 7 [50%] [on]
  Date: Mon Sep  9 16:56:22 2013
  HibernationDevice: RESUME=UUID=5301c707-e227-46f3-8b49-a319582091a4
  InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release i386 (20101007)
  MachineType: LENOVO 8743CTO
  MarkForUpload: True
   Socket 0:
     no product info available
   Socket 0:
     no card
  ProcFB: 0 VESA VGA
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-53-generic root=UUID=a9ba509e-76a3-4c03-b898-0409f24233eb ro quiet splash nomodeset vt.handoff=7
   linux-restricted-modules-3.2.0-53-generic N/A
   linux-backports-modules-3.2.0-53-generic  N/A
   linux-firmware                            1.79.6
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 02/05/2008
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 7IET32WW (1.13 )
  dmi.board.name: 8743CTO
  dmi.board.vendor: LENOVO
  dmi.board.version: Not Available
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: dmi:bvnLENOVO:bvr7IET32WW(1.13):bd02/05/2008:svnLENOVO:pn8743CTO:pvrThinkPadT60:rvnLENOVO:rn8743CTO:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 8743CTO
  dmi.product.version: ThinkPad T60
  dmi.sys.vendor: LENOVO

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