I attempted to check stack trace in the core generated by [1] with `jhsdb jstack`, however it failed with following exception.

```
Error occurred during stack walking:
java.lang.RuntimeException: Couldn't deduce type of CodeBlob @0x00007fa04c265990 for PC=0x00007fa04c265aa6
        at jdk.hotspot.agent/sun.jvm.hotspot.code.CodeCache.findBlobUnsafe(CodeCache.java:124)
        at jdk.hotspot.agent/sun.jvm.hotspot.code.CodeCache.findBlob(CodeCache.java:83)
        at jdk.hotspot.agent/sun.jvm.hotspot.runtime.Frame.cb(Frame.java:119)
        at jdk.hotspot.agent/sun.jvm.hotspot.runtime.x86.X86Frame.adjustUnextendedSP(X86Frame.java:334)
        at jdk.hotspot.agent/sun.jvm.hotspot.runtime.x86.X86Frame.initFrame(X86Frame.java:137)
        at jdk.hotspot.agent/sun.jvm.hotspot.runtime.x86.X86Frame.<init>(X86Frame.java:163)
        at jdk.hotspot.agent/sun.jvm.hotspot.runtime.x86.X86Frame.senderForInterpreterFrame(X86Frame.java:361)
        at jdk.hotspot.agent/sun.jvm.hotspot.runtime.x86.X86Frame.sender(X86Frame.java:281)
        at jdk.hotspot.agent/sun.jvm.hotspot.runtime.Frame.sender(Frame.java:207)
        at jdk.hotspot.agent/sun.jvm.hotspot.runtime.Frame.realSender(Frame.java:212)
        at jdk.hotspot.agent/sun.jvm.hotspot.runtime.VFrame.sender(VFrame.java:120)
        at jdk.hotspot.agent/sun.jvm.hotspot.runtime.VFrame.javaSender(VFrame.java:144)
        at jdk.hotspot.agent/sun.jvm.hotspot.tools.StackTrace.run(StackTrace.java:81)
        at jdk.hotspot.agent/sun.jvm.hotspot.tools.StackTrace.run(StackTrace.java:45)
        at jdk.hotspot.agent/sun.jvm.hotspot.tools.JStack.run(JStack.java:67)
        at jdk.hotspot.agent/sun.jvm.hotspot.tools.Tool.startInternal(Tool.java:278)
        at jdk.hotspot.agent/sun.jvm.hotspot.tools.Tool.start(Tool.java:241)
        at jdk.hotspot.agent/sun.jvm.hotspot.tools.Tool.execute(Tool.java:134)
        at jdk.hotspot.agent/sun.jvm.hotspot.tools.JStack.runWithArgs(JStack.java:90)
        at jdk.hotspot.agent/sun.jvm.hotspot.SALauncher.runJSTACK(SALauncher.java:302)
        at jdk.hotspot.agent/sun.jvm.hotspot.SALauncher.main(SALauncher.java:500)
Caused by: sun.jvm.hotspot.types.WrongTypeException: No suitable match for type of address 0x00007fa04c265990 (nearest symbol is _ZTV10UpcallStub)
        at jdk.hotspot.agent/sun.jvm.hotspot.runtime.InstanceConstructor.newWrongTypeException(InstanceConstructor.java:62)
        at jdk.hotspot.agent/sun.jvm.hotspot.runtime.VirtualConstructor.instantiateWrapperFor(VirtualConstructor.java:80)
        at jdk.hotspot.agent/sun.jvm.hotspot.code.CodeCache.findBlobUnsafe(CodeCache.java:107)
```

FFM upcall would use `UpcallStub` to call Java code from native, however frame size of the stub would be set to zero implicitly. It should be set to valid size.

[1] https://github.com/YaSuenag/garakuta/blob/841452d9176dab1ddbb552009c180530eb81190b/NativeSEGV/ffm/upcall/src/main/java/com/yasuenag/garakuta/nativesegv/upcall/Main.java