JVM 1.5.0_11 and libumem -- need stack trace help for memory leak

Question

I'm trying to track down the cause of some memory growth in a java application. In my tests, the java heap appears to remain stable, but the overall memory footprint of the jvm process continues to grow (observed with pmap).
I've run my application with libumem and have found what appears to be the culprit, but the memory allocation is in libjvm.so and I'm looking for ideas what might cause it.
uname -a for my host
SunOS thehost 5.10 Generic_118822-18 sun4u sparc SUNW,Netra-440
Here is the trace from libumem:
1f81c4c0::bufctl_auditADDR BUFADDR TIMESTAMP THREAD
CACHE LASTLOG CONTENTS
1f81c4c0 1f81a470 ac018b4577a0 7
1f43f188 8cda6a4 0
libumem.so.1`umem_cache_alloc+0x210
libumem.so.1`umem_alloc+0x60
libumem.so.1`malloc+0x28
libjvm.so`void*os::malloc+0x28
libjvm.so`void*ResourceObj::operator new+0x38
libjvm.so`ThreadStackTrace::ThreadStackTrace #Nvariant 1+0x34
libjvm.so`void VM_ThreadDump::doit+0xcc
libjvm.so`void VM_Operation::evaluate+0x80
libjvm.so`void VMThread::run+0x6e0
libjvm.so`void*_start+0x208
libc.so.1`_lwp_start
What causes this invocation in the JVM? Is there a known memory leak associated with this?
Thanks in advance for the assistance.

Answer 1

More on this issue. The included program will continually allocate memory on the process heap until the JVM cannot allocate memory and it exits with the following exception.
Exception java.lang.OutOfMemoryError: requested 16 bytes for C_Heap: ResourceOBJ. Out of swap space?
import java.lang.StackTraceElement;
import java.lang.Thread;
public class TraceIt {
     public static void main(String[] args) {
          System.out.println("Starting trace");
          int i = 0;
          while (true)
               if (i%100 == 0) System.out.println(i);
               StackTraceElement[] se = Thread.currentThread().getStackTrace();
               i++;
}