Running "/java/re/j2se/1.6.0/promoted/all/b13/binaries/solaris-sparc/bin/jstack /java/re/j2se/1.6.0/promoted/all/b13/binaries/solaris-sparc/bin/java core" (core attached) I get the following output:

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Attaching to core core from executable /java/re/j2se/1.6.0/promoted/all/b13/binaries/solaris-sparc/bin/java, please wait...
Debugger attached successfully.
Client compiler detected.
JVM version is 1.6.0-ea-b13
Deadlock Detection:

No deadlocks found.

Thread t@9: (state = IN_NATIVE)
 - java.net.PlainSocketImpl.socketAccept(java.net.SocketImpl) @bci=0 (Interpreted frame)
 - java.net.PlainSocketImpl.socketAccept(java.net.SocketImpl) @bci=0 (Interpreted frame)
 - java.net.PlainSocketImpl.accept(java.net.SocketImpl) @bci=7, line=384 (Interpreted frame)
 - java.net.ServerSocket.implAccept(java.net.Socket) @bci=50, line=450 (Interpreted frame)
 - com.sun.net.ssl.internal.ssl.SSLServerSocketImpl.accept() @bci=38, line=259 (Interpreted frame)
 - JSSEServer.run() @bci=50, line=40 (Interpreted frame)
 - java.lang.Thread.run() @bci=11, line=595 (Interpreted frame)


Thread t@5: (state = BLOCKED)


Thread t@4: (state = BLOCKED)
 - java.lang.Object.wait(long) @bci=192917225 (Interpreted frame)
 - java.lang.Object.wait(long) @bci=0 (Interpreted frame)
 - java.lang.ref.ReferenceQueue.remove(long) @bci=44, line=116 (Interpreted frame)
 - java.lang.ref.ReferenceQueue.remove() @bci=2, line=132 (Interpreted frame)
 - java.lang.ref.Finalizer$FinalizerThread.run() @bci=3, line=159 (Interpreted frame)


Thread t@3: (state = BLOCKED)
 - java.lang.Object.wait(long) @bci=192941800 (Interpreted frame)
 - java.lang.Object.wait(long) @bci=0 (Interpreted frame)
 - java.lang.Object.wait() @bci=2, line=474 (Interpreted frame)
 - java.lang.ref.Reference$ReferenceHandler.run() @bci=46, line=116 (Interpreted frame)


Thread t@1: (state = IN_JAVA)
Error occurred during stack walking:
java.lang.NullPointerException
at sun.jvm.hotspot.runtime.sparc.SPARCFrame.<init>(SPARCFrame.java:227)
at sun.jvm.hotspot.runtime.sparc.SPARCFrame.senderWithPCAdjustment(SPARCFrame.java:869)
at sun.jvm.hotspot.runtime.sparc.SPARCFrame.sender(SPARCFrame.java:433)
at sun.jvm.hotspot.runtime.Frame.sender(Frame.java:184)
at sun.jvm.hotspot.runtime.Frame.realSender(Frame.java:189)
at sun.jvm.hotspot.runtime.VFrame.sender(VFrame.java:102)
at sun.jvm.hotspot.runtime.VFrame.javaSender(VFrame.java:134)
at sun.jvm.hotspot.runtime.JavaThread.getLastJavaVFrameDbg(JavaThread.java:224)
at sun.jvm.hotspot.tools.StackTrace.run(StackTrace.java:50)
at sun.jvm.hotspot.tools.JStack.run(JStack.java:41)
at sun.jvm.hotspot.tools.Tool.start(Tool.java:204)
at sun.jvm.hotspot.tools.JStack.main(JStack.java:58)
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