SQL CLR .NET Framework runtime fatal error due to Uneven Number of CPUs Across Processor Groups

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Problem

If you’re using SQL CLR, you may have encountered an unexpected SQL Server service termination issue on SQL Servers with a large number of CPUs.

Symptoms

SQL Server service terminates unexpectedly.

 

In the ERRORLOG, you’ll see the following message:

 

<datetime>

Server      * *******************************************************************************

<datetime> Server      *

<datetime> Server      * BEGIN STACK DUMP:

<datetime> Server      *   04/27/20 10:30:16 spid 38076

<datetime> Server      *

<datetime> Server      * A fatal error occurred in .NET Framework runtime.

 

In addition, a memory dump will be created The last message in ERRORLOG will show something like:

 

<datetime> Server      Error: 6536, Severity: