Program: 153277
Project: 153277
Buggy source:
@Override public byte[] pass(DataInputStream in,DataOutputStream out,PassthroughConnection ptc,KillableThread thread,boolean serverToClient,byte[] buffer,DownlinkState linkState){
  length=lengthUnit.read(in,ptc,thread,serverToClient,linkState);
  if (length == null) {
    return null;
  }
  if (length > 262144) {
    ptc.printLogMessage("String_Node_Str" + length + "String_Node_Str");
    return null;
  }
  length=lengthUnit.write(out,ptc,thread,serverToClient);
  if (length == null) {
    return null;
  }
  if (buffer == null || buffer.length < length) {
    setupBuffer(buffer);
  }
 else   if (value == null) {
    value=buffer;
  }
  buffer=value;
  int pos=0;
  int bufLength=buffer.length;
  while (pos < length) {
    int read;
    bufLength=Math.min(bufLength,length - pos);
    try {
      read=in.read(value,0,bufLength);
    }
 catch (    SocketTimeoutException ste) {
      if (!thread.killed()) {
        timeout++;
        if (timeout > 20) {
          ptc.printLogMessage("String_Node_Str");
          return null;
        }
        continue;
      }
      return null;
    }
catch (    IOException e) {
      ptc.printLogMessage("String_Node_Str");
      return null;
    }
    try {
      out.write(value,0,read);
    }
 catch (    SocketTimeoutException ste) {
      if (!thread.killed()) {
        timeout++;
        if (timeout > 20) {
          ptc.printLogMessage("String_Node_Str");
          return null;
        }
        continue;
      }
      return null;
    }
catch (    IOException e) {
      ptc.printLogMessage("String_Node_Str");
      return null;
    }
    pos+=read;
  }
  return buffer;
}

Fixed version (ground truth):
@Override public byte[] pass(DataInputStream in,DataOutputStream out,PassthroughConnection ptc,KillableThread thread,boolean serverToClient,byte[] buffer,DownlinkState linkState){
  length=lengthUnit.read(in,ptc,thread,serverToClient,linkState);
  if (length == null) {
    return null;
  }
  if (length > 262144) {
    ptc.printLogMessage("String_Node_Str" + length + "String_Node_Str");
    return null;
  }
  length=lengthUnit.write(out,ptc,thread,serverToClient);
  if (length == null) {
    return null;
  }
  if (buffer == null || buffer.length < length) {
    setupBuffer(buffer);
  }
 else   if (value == null) {
    value=buffer;
  }
  setupBuffer(null);
  buffer=value;
  int pos=0;
  int bufLength=buffer.length;
  while (pos < length) {
    int read;
    bufLength=Math.min(bufLength,length - pos);
    try {
      read=in.read(value,0,bufLength);
    }
 catch (    SocketTimeoutException ste) {
      if (!thread.killed()) {
        timeout++;
        if (timeout > 20) {
          ptc.printLogMessage("String_Node_Str");
          return null;
        }
        continue;
      }
      return null;
    }
catch (    IOException e) {
      ptc.printLogMessage("String_Node_Str");
      return null;
    }
    try {
      out.write(value,0,read);
    }
 catch (    SocketTimeoutException ste) {
      if (!thread.killed()) {
        timeout++;
        if (timeout > 20) {
          ptc.printLogMessage("String_Node_Str");
          return null;
        }
        continue;
      }
      return null;
    }
catch (    IOException e) {
      ptc.printLogMessage("String_Node_Str");
      return null;
    }
    pos+=read;
  }
  return buffer;
}