Issue

• I tried the following command to create a thread dump from a core file generated by SIGABRT or SIGSEGV of OpenJDK 7:

/usr/bin/jstack /usr/bin/java core.<PID>

but it failed with the following Exception:

Attaching to core core.<pid> from executable /usr/bin/java, please wait...
Exception in thread "main" java.lang.reflect.InvocationTargetException
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at sun.tools.jstack.JStack.runJStackTool(JStack.java:136)
    at sun.tools.jstack.JStack.main(JStack.java:102)
Caused by: sun.jvm.hotspot.debugger.UnmappedAddressException: 7f84dd174e10
    at sun.jvm.hotspot.debugger.PageCache.checkPage(PageCache.java:208)
    at sun.jvm.hotspot.debugger.PageCache.getData(PageCache.java:63)
    at sun.jvm.hotspot.debugger.DebuggerBase.readBytes(DebuggerBase.java:217)
    at sun.jvm.hotspot.debugger.linux.LinuxDebuggerLocal.readCInteger(LinuxDebuggerLocal.java:482)
    at sun.jvm.hotspot.debugger.linux.LinuxAddress.getCIntegerAt(LinuxAddress.java:69)
    at sun.jvm.hotspot.utilities.CStringUtilities.getString(CStringUtilities.java:61)
    at sun.jvm.hotspot.HotSpotTypeDataBase.readVMTypes(HotSpotTypeDataBase.java:174)
    at sun.jvm.hotspot.HotSpotTypeDataBase.<init>(HotSpotTypeDataBase.java:85)
    at sun.jvm.hotspot.bugspot.BugSpotAgent.setupVM(BugSpotAgent.java:569)
    at sun.jvm.hotspot.bugspot.BugSpotAgent.go(BugSpotAgent.java:493)
    at sun.jvm.hotspot.bugspot.BugSpotAgent.attach(BugSpotAgent.java:347)
    at sun.jvm.hotspot.tools.Tool.start(Tool.java:169)
    at sun.jvm.hotspot.tools.JStack.main(JStack.java:86)
    ... 6 more

This issue also happens in OpenJDK 6, Oracle JDK 6 and Oracle JDK 7.