http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1021609

What is NMI?

NMI stands for Non-Maskable Interrupt.  It can be generated by a hard memory error, or by a button in ILO.  When a hard memory error occurs you want the system to crash so that data isn’t corrupted.  When a system is in a hard hung state, and totally unresponsive, you can use the NMI facility in ILO to crash the system so that a dump is created.

Where to get the patch?

http://h20000.www2.hp.com/bizsupport/TechSupport/SoftwareDescription.jsp?lang=en&cc=us&prodTypeId=3709945&prodSeriesId=3884113&swItem=MTX-c2dd60fc9642432dae086527f4&prodNameId=3884114&swEnvOID=4091&swLang=13&taskId=135&mode=3