PSOD error: "PCPU ## locked up. Failed to ack TLB invalidate (at least 1 locked up, PCPU(s): ##)" purple diagnostic screen

Products

• VMware vSphere ESXi

Issue/Introduction

A purple diagnostic screen that reports below information:

Panic Message: @BlueScreen: PCPU ## locked up. Failed to ack TLB invalidate (at least 1 locked up, PCPU(s): ##).

Prior to the psod, the following was found in the vmkernel logs:

/var/run/log/vmkernel.log:
YYYY-MM-DDTHH:MM:SS cpu7:#######)WARNING: Heartbeat: xxx: PCPU ## didn't have a heartbeat for 5 seconds, timeout is 10, 1 IPIs sent; *may* be locked up.
YYYY-MM-DDTHH:MM:SS cpu7:#######)Heartbeat: xxxx: Sending timer IPI to PCPU ##
YYYY-MM-DDTHH:MM:SS cpu7:#######)WARNING: Heartbeat: xxx: PCPU ## didn't have a heartbeat for 6 seconds, timeout is 10, 1 IPIs sent; *may* be locked up.
YYYY-MM-DDTHH:MM:SS cpu7:#######)Heartbeat: xxxx: Sending timer IPI to PCPU ##

Environment

 VMware ESXi 8.0.x

Cause

The PCPU/PCPUs mentioned were unresponsive even to NMI, meaning it is an hardware platform issue.

Resolution

Engaging the hardware vendor to run hardware diagnosis and stress tests on the environment.

If the hardware vendor does not find a fault, please reach out to the Broadcom Support for assistance.

Additional Information

Understanding a "Failed to ack TLB invalidate" purple diagnostic screen