Windows BSOD WHEA_UNCORRECTABLE_ERROR(124) & correctable WHEA events when disabling network ports on X4170M2/X4270M2

(Doc ID 1576683.1)

Last updated on APRIL 02, 2014

Applies to:

Sun Fire X4270 M2 Server - Version Not Applicable to Not Applicable [Release N/A]
Sun Fire X4170 M2 Server - Version Not Applicable to Not Applicable [Release N/A]
Windows Server - Version 2008 x64 to 2008 x64
Windows Server - Version 2008 to 2008
Information in this document applies to any platform.

Symptoms

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When disabling unconnected network ports in Windows 2008 / 2008R2 running on X4170M2 or X4270 M2 hardware you may see a number of correctable WHEA events being logged in the Windows System event logs.

This may also lead to uncorrectable WHEA events under heavy network load which will trigger a Windows Blue Screen of Death (BSOD) crash of type WHEA_UNCORRECTABLE_ERROR(124) causing the system to unexpectedly reset.

These symptoms are not always seen and may depend on what network ports have been enabled/disabled in windows. For example, we have seen the issue using the following configuration of the on-board network ports :


 

Note: This issue may also be seen when disabling network ports on Intel based PCIe network cards on these platforms also, not just the on-board network ports.

Cause

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