[Bug] java21 log4j2 spring boot 3.4 agent start error with: class redefinition failed: attempted to change superclass or interfaces

[sheiy]

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• I had searched in the issues and found no similar issues.

Apache SkyWalking Component

Java Agent (apache/skywalking-java)

What happened

skywalking-agent/activations/apm-toolkit-logging-common-9.3.0.jar loaded.
ERROR 2025-01-17 17:54:00.440 main SkyWalkingAgent : index=0, batch=[class org.apache.logging.log4j.core.impl.Log4jLogEvent, class org.apache.skywalking.apm.toolkit.log.log4j.v2.x.log.GRPCLogClientAppender, class org.apache.logging.log4j.core.async.AsyncLoggerConfig, class org.apache.logging.log4j.core.appender.AsyncAppender, class org.apache.skywalking.apm.toolkit.log.log4j.v2.x.TraceIdConverter, class org.apache.skywalking.apm.toolkit.log.log4j.v2.x.SkyWalkingContextConverter], types=[class org.apache.logging.log4j.core.impl.Log4jLogEvent, class org.apache.skywalking.apm.toolkit.log.log4j.v2.x.log.GRPCLogClientAppender, class org.apache.logging.log4j.core.async.AsyncLoggerConfig, class org.apache.logging.log4j.core.appender.AsyncAppender, class org.apache.skywalking.apm.toolkit.log.log4j.v2.x.TraceIdConverter, class org.apache.skywalking.apm.toolkit.log.log4j.v2.x.SkyWalkingContextConverter]
java.lang.UnsupportedOperationException: class redefinition failed: attempted to change superclass or interfaces
at java.instrument/sun.instrument.InstrumentationImpl.retransformClasses0(Native Method)
at java.instrument/sun.instrument.InstrumentationImpl.retransformClasses(InstrumentationImpl.java:225)
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
at java.base/java.lang.reflect.Method.invoke(Method.java:580)
at org.apache.skywalking.apm.dependencies.net.bytebuddy.utility.Invoker$Dispatcher.invoke(Unknown Source)
at org.apache.skywalking.apm.dependencies.net.bytebuddy.utility.dispatcher.JavaDispatcher$Dispatcher$ForNonStaticMethod.invoke(JavaDispatcher.java:1032)
at org.apache.skywalking.apm.dependencies.net.bytebuddy.utility.dispatcher.JavaDispatcher$ProxiedInvocationHandler.invoke(JavaDispatcher.java:1162)
at org.apache.skywalking.apm.dependencies.net.bytebuddy.agent.builder.$Proxy35.retransformClasses(Unknown Source)
at org.apache.skywalking.apm.dependencies.net.bytebuddy.agent.builder.AgentBuilder$RedefinitionStrategy$Collector$ForRetransformation.doApply(AgentBuilder.java:8336)
at org.apache.skywalking.apm.dependencies.net.bytebuddy.agent.builder.AgentBuilder$RedefinitionStrategy$Collector.apply(AgentBuilder.java:8151)
at org.apache.skywalking.apm.dependencies.net.bytebuddy.agent.builder.AgentBuilder$RedefinitionStrategy.apply(AgentBuilder.java:5848)
at org.apache.skywalking.apm.dependencies.net.bytebuddy.agent.builder.AgentBuilder$Default.doInstall(AgentBuilder.java:11462)
at org.apache.skywalking.apm.dependencies.net.bytebuddy.agent.builder.AgentBuilder$Default.installOn(AgentBuilder.java:11362)
at org.apache.skywalking.apm.agent.SkyWalkingAgent.installClassTransformer(SkyWalkingAgent.java:152)
at org.apache.skywalking.apm.agent.SkyWalkingAgent.premain(SkyWalkingAgent.java:105)
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
at java.base/java.lang.reflect.Method.invoke(Method.java:580)
at java.instrument/sun.instrument.InstrumentationImpl.loadClassAndStartAgent(InstrumentationImpl.java:560)
at java.instrument/sun.instrument.InstrumentationImpl.loadClassAndCallPremain(InstrumentationImpl.java:572)

What you expected to happen

start success

How to reproduce

just run the app

Anything else

No response

Are you willing to submit a pull request to fix on your own?

• Yes I am willing to submit a pull request on my own!

Code of Conduct

• I agree to follow this project's Code of Conduct

[wu-sheng]

This seems more likely a new version support for newer log4j2 in Spring, rather than bugs.
If you are willing to contribute codes, you should check the class, which was converted incorrect. It should be changed from our compiled version(toolkit lib)