A pure Java application crashes under OpenSolaris and 64 bit Linux using the parralel old gen GC.
The application crashes at safe points. Sometimes within the gc. Sometimes inthe synchronization state, sometimes in an application thread
Example:
# SIGSEGV (0xb) at pc=0xfffffd7ffec9040c, pid=1510, tid=3
#
# Java VM: Java HotSpot(TM) 64-Bit Server VM (11.2-b01 mixed mode solaris-amd64)

9 error logs have been attached to the case
partner used JDK 7 as suggested. It did not help. Attachement hs_err_pid4223.log is documenting the crash with jdk7.
The partner used the following options:
JAVA_OPTS="-d64 -server -Xms6g -Xmx6g -XX:MaxNewSize=1g -XX:NewSize=1g -XX:-UseBiasedLocking -XX:MaxPermSize=2048m -XX:PermSize=2048m -XX:+UseConcMarkSweepGC -Djava.awt.headless=true -Dsun.net.inetaddr.ttl=60 -Djboss.partition.name=xxxParnername"
Customer ran application with -Xint and serialGC. See log in attachment with file name hs_err_pid894.log

The application is still crashing.
Thwo more information items:
* The application crashes as well in 32 Bit mode (incorrect communication in the past)
* the customer has not been able to run the verfify before at aafter GC option in JDK 7.0 . Is it possible that these options are part of the debug VM only?
Customer performed test with before and after gc verification. No regular dump has been generated. See attachement veriflog090315.txt with information.