jstack -F hits NullPointerException during some java application Pattern calls

Issue

• When using jstack -F, not all thread stacks are listed. Instead, an error is listed for a thread which is in an loop due to Java pattern processing:

Thread 12105: (state = IN_JAVA)
Error occurred during stack walking:
java.lang.NullPointerException
        at sun.jvm.hotspot.tools.StackTrace.run(StackTrace.java:88)
        at sun.jvm.hotspot.tools.StackTrace.run(StackTrace.java:45)
        at sun.jvm.hotspot.tools.JStack.run(JStack.java:66)
        at sun.jvm.hotspot.tools.Tool.startInternal(Tool.java:260)
        at sun.jvm.hotspot.tools.Tool.start(Tool.java:223)
        at sun.jvm.hotspot.tools.Tool.execute(Tool.java:118)
        at sun.jvm.hotspot.tools.JStack.main(JStack.java:92)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at sun.tools.jstack.JStack.runJStackTool(JStack.java:140)
        at sun.tools.jstack.JStack.main(JStack.java:106)

• We should be able to see a stack trace of the thread's pattern calls like:

    at java.util.regex.Pattern$GroupHead.match(Pattern.java:4660)
    at java.util.regex.Pattern$Branch.match(Pattern.java:4606)
    at java.util.regex.Pattern$GroupHead.match(Pattern.java:4660)
    at java.util.regex.Pattern$NotBehind.match(Pattern.java:5204)
    at java.util.regex.Pattern$Loop.match(Pattern.java:4796)
    at java.util.regex.Pattern$GroupTail.match(Pattern.java:4719)
    at java.util.regex.Pattern$BranchConn.match(Pattern.java:4570)
    at java.util.regex.Pattern$GroupCurly.match0(Pattern.java:4465)
    at java.util.regex.Pattern$GroupCurly.match(Pattern.java:4407)
    at java.util.regex.Pattern$Branch.match(Pattern.java:4606)
    at java.util.regex.Pattern$GroupHead.match(Pattern.java:4660)
    at java.util.regex.Pattern$Loop.match(Pattern.java:4787)
    at java.util.regex.Pattern$GroupTail.match(Pattern.java:4719)
    at java.util.regex.Pattern$BranchConn.match(Pattern.java:4570)
    at java.util.regex.Pattern$GroupCurly.match0(Pattern.java:4465)
    at java.util.regex.Pattern$GroupCurly.match(Pattern.java:4407)
    at java.util.regex.Pattern$Branch.match(Pattern.java:4606)
    at java.util.regex.Pattern$GroupHead.match(Pattern.java:4660)
    at java.util.regex.Pattern$Loop.match(Pattern.java:4787)
    at java.util.regex.Pattern$GroupTail.match(Pattern.java:4719)