output: #fixed code
                                  public void handleOpenFailure(Buffer buffer) {
          int reason = buffer.getInt();
          String msg = buffer.getString();
          this.openFailureReason = reason;
          this.openFailureMsg = msg;
          this.openFuture.setException(new SshException(msg));
          this.closeFuture.setClosed();
          this.doClose();
          notifyStateChanged();
      }
input: #vulnerable code 
                                  public void handleOpenFailure(Buffer buffer) {
          int reason = buffer.getInt();
          String msg = buffer.getString();
          synchronized (lock) {
              this.openFailureReason = reason;
              this.openFailureMsg = msg;
              this.openFuture.setException(new SshException(msg));
              this.closeFuture.setClosed();
              this.doClose();
              lock.notifyAll();
          }
      } 
                              #location 2 
                              #vulnerability type THREAD_SAFETY_VIOLATION