How to panic a hung RHEL Guest on a Hyper V host using an NMI

Solution Verified - Updated -


  • Red Hat Enterprise Linux guest is unresponsive
  • When system is hung, you are unable to panic the system using the sysrq trigger


  • Red Hat Enterprise Linux 4, 5, 6, or 7
  • Hyper V host environment (must be Hyper V 2012 R2 or later)

Subscriber exclusive content

A Red Hat subscription provides unlimited access to our knowledgebase, tools, and much more.

Current Customers and Partners

Log in for full access

Log In

New to Red Hat?

Learn more about Red Hat subscriptions

Using a Red Hat product through a public cloud?

How to access this content