Program: 53959
Project: 53959
Buggy source:
public DefaultAgent(String agentArgs,Instrumentation instrumentation,ProfilerConfig profilerConfig){
  if (instrumentation == null) {
    throw new NullPointerException("String_Node_Str");
  }
  if (profilerConfig == null) {
    throw new NullPointerException("String_Node_Str");
  }
  this.binder=new Slf4jLoggerBinder();
  bindPLoggerFactory(this.binder);
  dumpSystemProperties();
  dumpConfig(profilerConfig);
  changeStatus(AgentStatus.INITIALIZING);
  this.profilerConfig=profilerConfig;
  this.serverInfo=new ServerInfo();
  final ApplicationServerTypeResolver typeResolver=new ApplicationServerTypeResolver(profilerConfig.getApplicationServerType());
  if (!typeResolver.resolve()) {
    throw new PinpointException("String_Node_Str");
  }
  this.byteCodeInstrumentor=new JavaAssistByteCodeInstrumentor(typeResolver.getServerLibPath(),this);
  if (logger.isInfoEnabled()) {
    logger.info("String_Node_Str",this.getClass().getClassLoader());
  }
  this.classFileTransformer=new ClassFileTransformerDispatcher(this,byteCodeInstrumentor);
  instrumentation.addTransformer(this.classFileTransformer);
  final AgentInformationFactory agentInformationFactory=new AgentInformationFactory();
  this.agentInformation=agentInformationFactory.createAgentInformation(typeResolver.getServerType());
  logger.info("String_Node_Str",agentInformation);
  this.tAgentInfo=createTAgentInfo();
  this.factory=createPinpointSocketFactory();
  this.socket=createPinpointSocket(this.profilerConfig.getCollectorServerIp(),this.profilerConfig.getCollectorTcpServerPort(),factory,this.profilerConfig.isTcpDataSenderCommandAcceptEnable());
  this.tcpDataSender=createTcpDataSender(socket);
  this.spanDataSender=createUdpDataSender(this.profilerConfig.getCollectorUdpSpanServerPort(),"String_Node_Str",this.profilerConfig.getSpanDataSenderWriteQueueSize(),this.profilerConfig.getSpanDataSenderSocketTimeout(),this.profilerConfig.getSpanDataSenderSocketSendBufferSize());
  this.statDataSender=createUdpDataSender(this.profilerConfig.getCollectorUdpServerPort(),"String_Node_Str",this.profilerConfig.getStatDataSenderWriteQueueSize(),this.profilerConfig.getStatDataSenderSocketTimeout(),this.profilerConfig.getStatDataSenderSocketSendBufferSize());
  this.traceContext=createTraceContext(agentInformation.getServerType());
  this.heartBitChecker=new HeartBitChecker(tcpDataSender,profilerConfig.getHeartbeatInterval(),tAgentInfo);
  this.agentStatMonitor=new AgentStatMonitor(this.statDataSender,this.agentInformation.getAgentId(),this.agentInformation.getStartTime());
  preLoadClass();
  if (typeResolver.isManuallyStartupRequired()) {
    start();
  }
}

Fixed version (ground truth):
public DefaultAgent(String agentArgs,Instrumentation instrumentation,ProfilerConfig profilerConfig){
  if (instrumentation == null) {
    throw new NullPointerException("String_Node_Str");
  }
  if (profilerConfig == null) {
    throw new NullPointerException("String_Node_Str");
  }
  this.binder=new Slf4jLoggerBinder();
  bindPLoggerFactory(this.binder);
  dumpSystemProperties();
  dumpConfig(profilerConfig);
  changeStatus(AgentStatus.INITIALIZING);
  this.profilerConfig=profilerConfig;
  this.serverInfo=new ServerInfo();
  final ApplicationServerTypeResolver typeResolver=new ApplicationServerTypeResolver(profilerConfig.getApplicationServerType());
  if (!typeResolver.resolve()) {
    throw new PinpointException("String_Node_Str");
  }
  this.byteCodeInstrumentor=new JavaAssistByteCodeInstrumentor(typeResolver.getServerLibPath(),this);
  if (logger.isInfoEnabled()) {
    logger.info("String_Node_Str",this.getClass().getClassLoader());
  }
  this.classFileTransformer=new ClassFileTransformerDispatcher(this,byteCodeInstrumentor);
  instrumentation.addTransformer(this.classFileTransformer);
  final AgentInformationFactory agentInformationFactory=new AgentInformationFactory();
  this.agentInformation=agentInformationFactory.createAgentInformation(typeResolver.getServerType());
  logger.info("String_Node_Str",agentInformation);
  this.tAgentInfo=createTAgentInfo();
  this.factory=createPinpointSocketFactory();
  this.socket=createPinpointSocket(this.profilerConfig.getCollectorServerIp(),this.profilerConfig.getCollectorTcpServerPort(),factory,this.profilerConfig.isTcpDataSenderCommandAcceptEnable());
  this.tcpDataSender=createTcpDataSender(socket);
  this.spanDataSender=createUdpDataSender(this.profilerConfig.getCollectorUdpSpanServerPort(),"String_Node_Str",this.profilerConfig.getSpanDataSenderWriteQueueSize(),this.profilerConfig.getSpanDataSenderSocketTimeout(),this.profilerConfig.getSpanDataSenderSocketSendBufferSize());
  this.statDataSender=createUdpDataSender(this.profilerConfig.getCollectorUdpServerPort(),"String_Node_Str",this.profilerConfig.getStatDataSenderWriteQueueSize(),this.profilerConfig.getStatDataSenderSocketTimeout(),this.profilerConfig.getStatDataSenderSocketSendBufferSize());
  this.traceContext=createTraceContext(agentInformation.getServerType());
  this.heartBeatChecker=new HeartBeatChecker(tcpDataSender,profilerConfig.getHeartbeatInterval(),tAgentInfo);
  this.agentStatMonitor=new AgentStatMonitor(this.statDataSender,this.agentInformation.getAgentId(),this.agentInformation.getStartTime());
  preLoadClass();
  if (typeResolver.isManuallyStartupRequired()) {
    start();
  }
}