[Bug 1157] New: icedtea-web locks up browser and future applets after first visit a page with missing code applet class.

Thu Sep 6 03:46:55 PDT 2012

http://icedtea.classpath.org/bugzilla/show_bug.cgi?id=1157

          Priority: P3
            Bug ID: 1157
                CC: unassigned at icedtea.classpath.org
          Assignee: dbhole at redhat.com
           Summary: icedtea-web locks up browser and future applets after
                    first visit a page with missing code applet class.
          Severity: normal
    Classification: Unclassified
                OS: Linux
          Reporter: xerxes at zafena.se
          Hardware: 32-bit
            Status: NEW
           Version: hg
         Component: Plugin
           Product: IcedTea-Web

icedtea-web locks up browser and future applets after first visit a page with
missing code applet class.

Bug found to be reproducible using all recent icedtea-web releases and hg
repositorys:
IcedTea-Web Plugin (using IcedTea-Web 1.1.7pre+rb7d63cc06ec4)
IcedTea-Web Plugin (using IcedTea-Web 1.2 (1.2-2ubuntu1.2))
IcedTea-Web Plugin (using IcedTea-Web 1.3.1pre+r956ca57557a0)
IcedTea-Web Plugin (using IcedTea-Web 1.4pre+r4d8eccca14ed)

When testing using Firefox 15 on a Ubuntu 12.04 i386 system then all user input
locks up.
When testing using Chromium 18.0.1025.168 (Utvecklarversion 134367 Linux)
Ubuntu 12.04
i386 system then all java applets show a gray window after first triggering
this bug, browser remains responsive.

Testcase 1:
# step 1: visit a page with a missing plugin class to trigger the bug.
# the browser is still responsive, but will only display a gray window
http://www.oracle.com/technetwork/java/example1-137729.html
# step 2: now try visit a known to work page (or try reload the step 1 page)
and
# experience that the whole browser GUI have become unresponsive and do not
listen to any user input.
http://www.java.com/en/download/testjava.jsp

Testcase 2:
#HTML code to trigger the bug
#save it to a file bug.html
#load it in the browser and then try reload the same page
<html><body>
<applet code="Clock.class" width=170 height=150>
<param name=bgcolor value="000000">
<param name=fgcolor1 value="ff0000">
<param name=fgcolor2 value="ff00ff">
</applet>
</body></html>

#Console output
java version "1.6.0_24"
OpenJDK Runtime Environment (IcedTea6 1.11.4) (6b24-1.11.4-1ubuntu0.12.04.1)
OpenJDK Server VM (build 20.0-b12, mixed mode)
netx: Initialization Error: Could not initialize applet. (Clock)
netx: Initialization Error: Could not initialize applet. (Clock)
net.sourceforge.jnlp.LaunchException: Fatal: Initialization Error: Could not
initialize applet. 
    at net.sourceforge.jnlp.Launcher.createApplet(Launcher.java:735)
    at net.sourceforge.jnlp.Launcher.getApplet(Launcher.java:676)
    at net.sourceforge.jnlp.Launcher$TgThread.run(Launcher.java:886)
Caused by: java.lang.ClassNotFoundException: Clock
    at
net.sourceforge.jnlp.runtime.JNLPClassLoader.loadClass(JNLPClassLoader.java:1427)
    at net.sourceforge.jnlp.Launcher.createApplet(Launcher.java:725)
    ... 2 more
java.lang.NullPointerException
    at net.sourceforge.jnlp.NetxPanel.runLoader(NetxPanel.java:154)
    at sun.applet.AppletPanel.run(AppletPanel.java:380)
    at java.lang.Thread.run(Thread.java:679)
java.lang.NullPointerException
    at sun.applet.AppletPanel.run(AppletPanel.java:430)
    at java.lang.Thread.run(Thread.java:679)

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