"InternalError: Metadata does not appear to be polymorphic" When Running jmap, jstack, or jinfo
Issue
-
We see the following error:
# /usr/lib/jvm/java-1.8.0/bin/jmap -F -dump:format=b,file=dump.hprof 6503 Attaching to process ID 6503, please wait... Debugger attached successfully. Server compiler detected. JVM version is 25.65-b01 Dumping heap to java_pid6503_va1rprdljap7496.hprof ... Exception in thread "main" java.lang.reflect.InvocationTargetException at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ... at java.lang.reflect.Method.invoke(Method.java:497) at sun.tools.jmap.JMap.runTool(JMap.java:201) at sun.tools.jmap.JMap.main(JMap.java:130) Caused by: java.lang.InternalError: Metadata does not appear to be polymorphic at sun.jvm.hotspot.types.basic.BasicTypeDataBase.findDynamicTypeForAddress(BasicTypeDataBase.java:278) at sun.jvm.hotspot.runtime.VirtualBaseConstructor.instantiateWrapperFor(VirtualBaseConstructor.java:102) at sun.jvm.hotspot.oops.Metadata.instantiateWrapperFor(Metadata.java:68) ... at sun.jvm.hotspot.tools.HeapDumper.main(HeapDumper.java:83) ... 6 more -
Results in the following exception:
java.lang.RuntimeException: Unable to deduce type of thread from address 0x00007fac6c4f3000 (expected type JavaThread, CompilerThread, ServiceThread, JvmtiAgentThread, or SurrogateLockerThread) at sun.jvm.hotspot.runtime.Threads.createJavaThreadWrapper(Threads.java:166) ... at sun.jvm.hotspot.tools.StackTrace.run(StackTrace.java:45) ... at sun.jvm.hotspot.tools.JStack.main(JStack.java:92) ... at sun.tools.jstack.JStack.main(JStack.java:106) Caused by: sun.jvm.hotspot.types.WrongTypeException: No suitable match for type of address 0x00007fac6c4f3000 at sun.jvm.hotspot.runtime.InstanceConstructor.newWrongTypeException(InstanceConstructor.java:62) at sun.jvm.hotspot.runtime.VirtualConstructor.instantiateWrapperFor(VirtualConstructor.java:80) at sun.jvm.hotspot.runtime.Threads.createJavaThreadWrapper(Threads.java:162) ... 17 more Exception in thread "main" java.lang.reflect.InvocationTargetException at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ... at sun.tools.jstack.JStack.main(JStack.java:106) Caused by: java.lang.InternalError: Metadata does not appear to be polymorphic at sun.jvm.hotspot.types.basic.BasicTypeDataBase.findDynamicTypeForAddress(BasicTypeDataBase.java:278) at sun.jvm.hotspot.runtime.VirtualBaseConstructor.instantiateWrapperFor(VirtualBaseConstructor.java:102) at sun.jvm.hotspot.oops.Metadata.instantiateWrapperFor(Metadata.java:68) ... at sun.jvm.hotspot.tools.StackTrace.run(StackTrace.java:45) ... at sun.jvm.hotspot.tools.JStack.main(JStack.java:92) ... 6 more
Environment
- Oracle JDK
- 1.8
- OpenJDK
- 1.8
- jinfo -sysprops
- jmap
- jstack -F -l
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