An issue has been discovered with the M6 processors and system firmware version 9.1.0.x within the SPARC M6-32 server that requires a mandatory system firmware upgrade to version 9.1.1.a or newer. You can download the firmware from:
Instructions for upgrading firmware are provided in the download, and in the SPARC M5-32 and SPARC M6-32 Servers Administration Guide, available from:
http://docs.oracle.com/cd/E24355_01
Contact your authorized Oracle Service Provider for assistance.