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sunwu51 / JVMByteSwapTool

jvm diagnose tool by swapping bytecode
https://www.bilibili.com/video/BV1TmWWeYEie
MIT License
55 stars 15 forks source link

TypeNotPresentException #26

Closed sunwu51 closed 1 month ago

sunwu51 commented 1 month ago

When computeAllFrames, there is a method in ClassWriter getCommonSuperClass, that will return the common super type of given types. Here, use current classloader to load the given type. It should be Global.getClassLoader

java.lang.TypeNotPresentException: Type XXXXX not present
    at wshade.org.objectweb.asm.ClassWriter.getCommonSuperClass(ClassWriter.java:1052)
    at wshade.org.objectweb.asm.SymbolTable.addMergedType(SymbolTable.java:1264)
    at wshade.org.objectweb.asm.Frame.merge(Frame.java:1311)
    at wshade.org.objectweb.asm.Frame.merge(Frame.java:1255)
    at wshade.org.objectweb.asm.MethodWriter.computeAllFrames(MethodWriter.java:1612)
    at wshade.org.objectweb.asm.MethodWriter.visitMaxs(MethodWriter.java:1548)
    at wshade.org.objectweb.asm.MethodVisitor.visitMaxs(MethodVisitor.java:786)
    at wshade.org.objectweb.asm.commons.LocalVariablesSorter.visitMaxs(LocalVariablesSorter.java:147)
    at w.core.model.WatchTransformer$1$1.visitMaxs(WatchTransformer.java:114)
    at wshade.org.objectweb.asm.ClassReader.readCode(ClassReader.java:2664)
    at wshade.org.objectweb.asm.ClassReader.readMethod(ClassReader.java:1512)
    at wshade.org.objectweb.asm.ClassReader.accept(ClassReader.java:745)
    at wshade.org.objectweb.asm.ClassReader.accept(ClassReader.java:425)
    at w.core.model.WatchTransformer.transform(WatchTransformer.java:52)
    at w.core.model.BaseClassTransformer.transform(BaseClassTransformer.java:48)
    at sun.instrument.TransformerManager.transform(TransformerManager.java:188)
    at sun.instrument.InstrumentationImpl.transform(InstrumentationImpl.java:428)
    at sun.instrument.InstrumentationImpl.retransformClasses0(Native Method)
    at sun.instrument.InstrumentationImpl.retransformClasses(InstrumentationImpl.java:144)
    at w.Global.addActiveTransformer(Global.java:256)
    at w.core.Swapper.swap(Swapper.java:68)
    at w.web.Websocketd$1.dispatch(Websocketd.java:98)
    at w.web.Websocketd$1.onMessage(Websocketd.java:51)
    at fi.iki.elonen.NanoWSD$WebSocket.handleWebsocketFrame(NanoWSD.java:229)
    at fi.iki.elonen.NanoWSD$WebSocket.readWebsocket(NanoWSD.java:247)
    at fi.iki.elonen.NanoWSD$WebSocket.access$200(NanoWSD.java:65)
    at fi.iki.elonen.NanoWSD$WebSocket$1.send(NanoWSD.java:88)
    at fi.iki.elonen.NanoHTTPD$HTTPSession.execute(NanoHTTPD.java:852)
    at fi.iki.elonen.NanoHTTPD$ClientHandler.run(NanoHTTPD.java:189)
    at java.lang.Thread.run(Thread.java:750)
Caused by: java.lang.ClassNotFoundException: XXXXX
    at java.net.URLClassLoader.findClass(URLClassLoader.java:387)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:418)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:352)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:351)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java:348)
    at wshade.org.objectweb.asm.ClassWriter.getCommonSuperClass(ClassWriter.java:1050)
    ... 29 more