FULL PRODUCT VERSION :
This is the first build that exhibits the problem:

Java(TM) SE Runtime Environment (build 9-ea+124)
Java HotSpot(TM) Server VM (build 9-ea+124, mixed mode)

ADDITIONAL OS VERSION INFORMATION :
Linux 3.4.63-2.44

A DESCRIPTION OF THE PROBLEM :
The fix to JDK-8139192 causes a null pointer exception in java.awt.Toolkit.createCustomCursor().

This breaks the popular jEdit text editor. The NPE happens on the EDT.

REGRESSION. Last worked in version 9

ADDITIONAL REGRESSION INFORMATION:
This is the last known good version:

Java(TM) SE Runtime Environment (build 9-ea+123)
Java HotSpot(TM) Server VM (build 9-ea+123, mixed mode)

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Compile and run the test case below to reproduce the NPE. This is an excerpt from the jEdit text editor that I have prepared for your convenience.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
There should be no exception.
ACTUAL -
There is a null pointer exception (see below).

ERROR MESSAGES/STACK TRACES THAT OCCUR :
java.lang.NullPointerException
at sun.awt.image.OffScreenImageSource.produce(java.desktop@9-ea/OffScreenImageSource.java:191)
at sun.awt.image.OffScreenImageSource.addConsumer(java.desktop@9-ea/OffScreenImageSource.java:66)
at sun.awt.image.OffScreenImageSource.startProduction(java.desktop@9-ea/OffScreenImageSource.java:80)
at java.awt.image.PixelGrabber.grabPixels(java.desktop@9-ea/PixelGrabber.java:259)
at java.awt.image.PixelGrabber.grabPixels(java.desktop@9-ea/PixelGrabber.java:226)
at sun.awt.CustomCursor.<init>(java.desktop@9-ea/CustomCursor.java:94)
at sun.awt.X11CustomCursor.<init>(java.desktop@9-ea/X11CustomCursor.java:44)
at sun.awt.X11.XCustomCursor.<init>(java.desktop@9-ea/XCustomCursor.java:43)
at sun.awt.X11.XToolkit.createCustomCursor(java.desktop@9-ea/XToolkit.java:1211)
at Bug8139192Regression.main(Bug8139192Regression.java:5)


REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
class Bug8139192Regression extends javax.swing.JFrame {

public static void main(String[] args) throws Exception {
final java.awt.Component component = new Bug8139192Regression();
component.getToolkit().createCustomCursor(
component.getGraphicsConfiguration().createCompatibleImage(
16, 16, java.awt.Transparency.BITMASK),
new java.awt.Point(0,0),
"Hidden");
}
}

---------- END SOURCE ----------

CUSTOMER SUBMITTED WORKAROUND :
This is internal to AWT. There is no workaround. You have two options to fix this:

1) Back out bug #8139192

2) Change the call site in java.awt.Toolkit.createCustomCursor()