RHEL 7 Hyper-V guest hangs during live migration

Solution In Progress - Updated -

Issue

  • During a live migration on Hyper-V a RHEL guest hangs unrecoverably with the following on console:
         BUG: soft lockup - CPU#3 stuck for 23s! [kworker/u128:2:19080]
  • Blocked tasks may also occur
  • The system does not recover with out a forced reboot

Environment

  • RHEL 7
    • Kernel-3.10.0-229.20.1.el7.x86_64
  • Microsoft Hyper-V guest
  • Live migration or scsi hotplug

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