Virtual Machine Stuck with 'BUG: soft lockup' messages after increasing/decreasing vcpus by command vcpu-set

(Doc ID 1980110.1)

Last updated on JULY 14, 2016

Applies to:

Oracle VM - Version 3.2.2 and later
Information in this document applies to any platform.

Symptoms

Dom0 OVS 3.2.x, virtual machine run with kernel 3.8.13-40.el6uek.x86_64 kernel.
Increasing amount of VCPUs with 'xm vcpu-set' results in the following errors and the virtual machine is stuck and finally only 'xm destroy' helps to stop the virtual machine .

Error in /var/log/messages on virtual machine :

Cause

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