core dump analysis : __kernel_vsyscall ()

Linux and Unix-Like Red Hat
1

We have just enabled core dump on our RHEL5.7 OS. the java process is terminating very often so we enable core dump to analysis the issue and find below in core dump file.

Core was generated by `/usr/java/jdk1.6.0_06//bin/java -server -Xms1536m -Xmx1536m -Xmn576m -XX:+Aggre'.
Program terminated with signal 6, Aborted.
#0 0xffffe410 in __kernel_vsyscall ()
(gdb) backtrace
#0 0xffffe410 in __kernel_vsyscall ()
#1 0x00aeda77 in ?? ()

Any help, idea abt tht error..

Thanks in advance..