** Attachment added: "apport.linux.1rykX9.apport"

** Changed in: linux (Ubuntu)
       Status: Incomplete => Confirmed

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  CPU soft lockup causing trusty (3.16.0-38-generic) to become

Status in linux package in Ubuntu:

Bug description:
  1) The release of Ubuntu you are using, via 'lsb_release -rd' or System -> 
About Ubuntu
  Description:    Ubuntu 14.04.5 LTS
  Release:        14.04

  2) The version of the package you are using, via 'apt-cache policy
  pkgname' or by checking in Software Center

  linux-image-3.16.0-38-generic 3.16.0-38.52~14.04.1 (ksplice effective version 
  qemu-system 2.0.0+dfsg-2ubuntu1.36

  3) What you expected to happen
  The system should not have crashed

  4) What happened instead
  The system crashed and reported CPU soft lockup errors.


  we had a system lock up completely today, we noticed the following in the 
  [84070301.087602] BUG: soft lockup - CPU#1 stuck for 23s! 
  [84070301.271530] BUG: soft lockup - CPU#8 stuck for 22s! [khugepaged:238]
  [84070314.314615] INFO: rcu_sched detected stalls on CPUs/tasks: { 0} 
(detected by 19, t=150024 jiffies, g=8647354832, c=8647354831, q=0)
  [84070341.072534] BUG: soft lockup - CPU#1 stuck for 22s! 

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