CMS thread fails w/ 434F4E43555252454E542D41524B335745455027454E45524154494F4E0E4850500089

Customer experienced in rapid succession three incidents of
#
# An unexpected error has been detected by HotSpot Virtual Machine:
#
# Internal Error (434F4E43555252454E542D41524B335745455027454E45524154494F4E0E4850500089 01), pid=26812, tid=21
#
# Java VM: Java HotSpot(TM) 64-Bit Server VM (1.4.2_09-b05 mixed mode)

 Please find attached two hs_err_pid.log files:
 hs_err_pid26812.log and hs_err_pid4502.log


1. Error Id
-----------
The Error Id translates into:

434F4E43555252454E542D41524B335745455027454E45524154494F4E0E4850500089 =
 Error ID is concurrentMarkSweepGeneration.hpp, 137


2. Source Code inspection
-------------------------
 The source code of concurrentMarkSweepGeneration.hpp, line 137 gives:

137 guarantee(!isFull(), "CMSMarkStack is full");