Live migration of RHEL 7 VMs on Hyper-V (2016) throw "rcu_sched detected stalls on CPUs" errors

Solution Verified - Updated -

Issue

  • "rcu_sched detected stalls on CPUs" leads to unresponsiveness of RHEL VMs on Hyper-V.
  • Most of the time the system freezes and doesn't recover.
  • This primarly happens with systems under load.

Environment

  • Red Hat Enterprise Linux (RHEL) 7
  • Microsoft Hyper-V 2016

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