JDK: 1.4, 1.5, 6b105(RI), 6u16, 7
Platform: Windows, Solaris
Failing JCK test: api/javax_swing/text/Keymap/index.html#Keymap[Keymap010]

The following minimized code sample:
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import javax.swing.*;
import javax.swing.text.Keymap;
import java.awt.event.ActionEvent;

public class MiniTest {

    public static void main(String[] args) {

        Keymap keyMap = new JTextPane().getKeymap();
        keyMap.setResolveParent(keyMap);

        new JTextPane().getKeymap().getKeyStrokesForAction(new AbstractAction() {
            public void actionPerformed(ActionEvent e) { }
        });
    }
}
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Causes:

Exception in thread "main" java.lang.StackOverflowError
at javax.swing.text.JTextComponent$DefaultKeymap.getKeyStrokesForAction(JTextComponent.java:4143)
at javax.swing.text.JTextComponent$DefaultKeymap.getKeyStrokesForAction(JTextComponent.java:4160)
at javax.swing.text.JTextComponent$DefaultKeymap.getKeyStrokesForAction(JTextComponent.java:4160)
at javax.swing.text.JTextComponent$DefaultKeymap.getKeyStrokesForAction(JTextComponent.java:4160)
.........