RHEL hypervisor crashes when starting VMs

Solution Verified - Updated -


  • Hypervisor crashes when VMs are started
  • Kernel crash in x86_emulate_insn, when the vCPU exits guest and tries to emulate some specific instructions in host mode, usually on setno instruction.


  • Red Hat Enterprise Linux 7.9.
  • Red Hat Enterprise Linux 8.6
    • kernel-4.18.0-372.36.1.el8_6.x86_64
  • Red Hat Virtualization 4.4 SP1

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