从IntelliJ运行JavaFX和Swing时的Segfault

Question

When running the following minified example from IntelliJ 2016.1 Community edition, I always encounter a segmentation fault:

import javax.swing.*;

import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.layout.Pane;
import javafx.stage.Stage;

public class Repro extends Application {

    public static void main(String[] args) {
        JFrame swingFrame = new JFrame();
        swingFrame.setTitle("Repro start");
        swingFrame.setSize(200, 350);
        swingFrame.setVisible(true);

        Application.launch(args);
    }

    @Override
    public void start(Stage stage) throws Exception {
        Pane root = new Pane();
        root.setMinHeight(200);
        root.setMinWidth(350);
        Scene scene = new Scene(root);
        stage.setScene(scene);
        stage.show();
    }
}

The environment is as follows:

• Ubuntu 15.10
• openjdk-8 (1.8.0_u66 build 17)
• openjfx-8 (8u60-b27-4)
• IntelliJ 2016.1 Community Edition (build #IC-145.258)

The issue is not reproducible by running javac into java
The problem also does not show when running through oraclejdk (1.8.0_u77-b03)

For reference the "output" of the program is as follows:

Prism-ES2 Error : GL_VERSION (major.minor) = 1.4
Exception in thread "JavaFX Application Thread" Exception in thread "JavaFX Application Thread" Exception in thread "JavaFX Application Thread" Exception in thread "JavaFX Application Thread" Exception in thread "JavaFX Application Thread" Exception in thread "JavaFX Application Thread" Exception in thread "JavaFX Application Thread" Exception in thread "JavaFX Application Thread" Exception in thread "JavaFX Application Thread" Exception in thread "JavaFX Application Thread" Exception in thread "JavaFX Application Thread" Exception in thread "JavaFX Application Thread" Exception in thread "JavaFX Application Thread" Exception in thread "JavaFX Application Thread" Exception in thread "JavaFX Application Thread" Exception in thread "JavaFX Application Thread" Exception in thread "JavaFX Application Thread" Exception in thread "JavaFX Application Thread" Exception in thread "JavaFX Application Thread" Exception in thread "JavaFX Application Thread" Exception in thread "JavaFX Application Thread" Exception in thread "JavaFX Application Thread" Exception in thread "JavaFX Application Thread" Exception in thread "JavaFX Application Thread" Exception in thread "JavaFX Application Thread" Exception in thread "JavaFX Application Thread" Exception in thread "JavaFX Application Thread" Exception in thread "JavaFX Application Thread" Exception in thread "JavaFX Application Thread" Exception in thread "JavaFX Application Thread" Exception in thread "JavaFX Application Thread" Exception in thread "JavaFX Application Thread" Exception in thread "JavaFX Application Thread" Exception in thread "JavaFX Application Thread" Exception in thread "JavaFX Application Thread" Exception in thread "JavaFX Application Thread" Exception in thread "JavaFX Application Thread" Exception in thread "JavaFX Application Thread" Exception in thread "JavaFX Application Thread" Exception in thread "JavaFX Application Thread" Exception in thread "JavaFX Application Thread" Exception in thread "JavaFX Application Thread" Exception in thread "JavaFX Application Thread" Exception in thread "JavaFX Application Thread" Exception in thread "JavaFX Application Thread" Exception in thread "JavaFX Application Thread" Exception in thread "JavaFX Application Thread" Exception in thread "JavaFX Application Thread" Exception in thread "JavaFX Application Thread" Exception in thread "JavaFX Application Thread" Exception in thread "JavaFX Application Thread" Exception in thread "JavaFX Application Thread" Exception in thread "JavaFX Application Thread" Exception in thread "JavaFX Application Thread" Exception in thread "JavaFX Application Thread" Exception in thread "JavaFX Application Thread" Exception in thread "JavaFX Application Thread" #
# A fatal error has been detected by the Java Runtime Environment:
#
#  Internal Error (safepoint.cpp:712), pid=16937, tid=140197878814464
#  fatal error: Illegal threadstate encountered: 6
#
# JRE version: OpenJDK Runtime Environment (8.0_66-b17) (build 1.8.0_66-internal-b17)
# Java VM: OpenJDK 64-Bit Server VM (25.66-b17 mixed mode linux-amd64 compressed oops)
# Failed to write core dump. Core dumps have been disabled. To enable core dumping, try "ulimit -c unlimited" before starting Java again
#
# An error report file with more information is saved as:
# /home/vogel612/.../hs_err_pid16937.log
#
# If you would like to submit a bug report, please visit:
#   http://bugreport.java.com/bugreport/crash.jsp
#

Process finished with exit code 134

The problem persists after running ulimit -c unlimited and restarting IntelliJ

As requested, the error log for one such execution is available at this gist.

How can I fix this behaviour?

Answer 1

The error can be reproduced outside IntelliJ as follow.

public class Main {
    public static void main(String[] args) throws Exception {
        new Repro().main(new String[0]);
    }
}

running java -cp . Main java -cp . Main on Ubuntu 15.10 with

openjdk version "1.8.0_66-internal"
OpenJDK Runtime Environment (build 1.8.0_66-internal-b17)
OpenJDK 64-Bit Server VM (build 25.66-b17, mixed mode)

produces the same fatal error. Whereas running java -cp . Repo java -cp . Repo does not fail.

running java -cp . Main java -cp . Main on CentOS 7 with

openjdk version "1.8.0_77"
OpenJDK Runtime Environment (build 1.8.0_77-b03)
OpenJDK 64-Bit Server VM (build 25.77-b03, mixed mode)

opens the Swing JFrame and the JavaFX Pane.

Seems this issue is related to that specific OpenJDK version and the way the class Repo is called.

edit If you can't switch to another Java version there is a possible "workaround". (based on this post )

Amend your Repro.java as below and it will not fail on OpenJDK Runtime Environment (build 1.8.0_66-internal-b17)

public static void main(String[] args) throws Exception {
    new JFXPanel(); // the "workaround" to initialize the toolkit
    JFrame swingFrame = new JFrame();
    ...