Nested KVM inside vSphere 6.7

Hi All,

I want to create a lab to simulate "openstack" deployment, so i want to build a KVM hypervisor inside our company vsphere 6.7 environment.

I follow all steps as below:

https://www.linuxtechi.com/install-kvm-hypervisor-on-centos-7-and-rhel-7/

KVM is running and all configuration looks functional. but when i want to create a new VM in kvm, it report the following errors:

[  OK  ] Started Open-iSCSI..

             Starting dracut initqueue hook...

[     36.894519] NMI watchdog: BUG: soft lokup - CPU#0 stuck for 22s! [systemd-udevd:662]

ESXi version : VMware ESXi, 6.7.0, 13006603

KVM: RHEL 7.7

Thanks you.