x86/x64 Systems With Intel Xeon E7 Family Processors (Westmere-EX) May Panic During an MCE Event (Doc ID 1482528.1)

Last updated on JULY 29, 2016

Applies to:

3rd-Party Hardware - Version Not Applicable to Not Applicable [Release N/A]
Sun Fire X4470 Server - Version Not Applicable to Not Applicable [Release N/A]
Solaris Operating System - Version 10 3/05 to 10 8/11 U10 [Release 10.0]
Oracle Solaris on x86-64 (64-bit)

Symptoms

NOTE: This issue only affects x86/x64 systems using the Intel Xeon E7 (Westmere-EX) Family of processors.  SPARC and other Intel/AMD Family Processors are not affected by this issue.
 Use "prtdiag -v" to confirm the processor family, eg:
 

Changes

The prescribed issue occurs more frequently on idle systems or systems with a very low workload.  The low workload pattern causes the CPUs to frequently switch between C-State levels.  Each time this occurs, an MCE is generated, thus increasing the number of MCE's and further increasing the chances of the system panicing.

Cause

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