Triple fault in event log shows reset of Linux virtual machines

Applies to: Hyper-V Server 2008Windows Server 2008 DatacenterWindows Server 2008 Enterprise More

Symptoms


On a Windows Server 2008 or Windows Server 2008 R2 Hyper-V host, the following event is logged, indicating that the virtual machine was reset during an operation that was not supported by Hyper-V: 

Cause


This is a standard Linux function, and it can be safely ignored.

More Information


There is no issue. When all the processes are shut down in Linux, Linux issues a triple fault to the hardware to reboot the system. This behavior is by design in Linux.

All Linux variants that are supported in Hyper-V may log the error event that is mentioned in this article. This behavior occurs regardless of what version of Linux Integration Services is installed.