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Non page pool memory leak in MFeB pool tag (after installing VirusScan Enterprise 8.8 Patch 6)
Technical Articles ID:   KB86124
Last Modified:  4/7/2017
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Environment

McAfee VirusScan Enterprise (VSE) 8.8 Patch 6

Summary

Non-page pool memory leak symptoms can manifest in numerous ways:
  • Bugchecks
  • System event 2019
  • RDP failures
  • Noticeable sluggish performance of the device
  • Monitoring memory and observing a climb in memory resource use that never releases
If you experience any of these symptoms after installing VSE 8.8 Patch 6, this article applies to you.

Problem

The MFeB (case sensitive) pool tag increases over time, but only when the Access Protection feature is enabled.

System Change

Recently installed VSE 8.8 with Patch 6, or upgraded to Patch 6.

Cause

A process information data structure that includes reference counting could leak memory, because the reference count is not always decremented later.

This particular pool tag leak could not be investigated through static analysis (from memory dump files generated when the pool usage was high), because the structure in question has no reference or traces for where the allocation originated.

Solution

This issue is resolved in VSE 8.8 Patch 7. Patches are cumulative; Technical Support recommends that you install the latest one.

Updates are available when you log on to the ServicePortal at: https://support.mcafee.com/downloads.

Workaround

Technical Support recommends that you reboot the affected system. If you are not able to reboot at this time, you can temporarily disable Access Protection, although this is not a best practice.

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