Repro steps:

1) Install JDK 6u71,

2) Set the IE --> Tools ----> Internet Options ----> Connections ----> LAN Settings to use the pac file from bug https://bug.oraclecorp.com/pls/bug/webbug_print.show?c_rptno=18246820, for automatic configuration script, close IE

file://C:/..../complicated-proxy.pac

3) Launch IE and run below JNLP
http://docs.oracle.com/javase/tutorialJWS/samples/deployment/NotepadJWSProject/Notepad.jnlp

Stack overflow will show up in javaw trace.

4) In JCP, set runtime parameter to -Xss1m and do same test, same result got

5) Launch cmd, set JAVAWS_VM_ARGS=-Xss1m, launch IE from the same cmd, run the same JNLP, the jnlp runs properly

Not sure if this affects previous version, the reason to pick 6u71 to repro is we started to use Rhino Parser for pac file from here, and easy to see the stack overflow problem with complicated pac file.

Not sure if this happened to JDK7 or not since new Rhino Parser code was integrated there, not able to repro with same steps.

Wondering if there is a way to tell what kind of runtime options are current javaws running with.