[Xen-users] JVM coredump leading to dom0/domU hanging (Xen 3.0 Test CD)

[Sanjay Lal <sanjayl@xxxxxxxxxxx>]

Hi,

We have an issue where a relatively simple Java + JNI program causes the dom0/domU to hang.  The example (http://www.kymasys.com/java.jni.segv.tar.gz) consistently reproduces the issue using the latest Xen 3.0 Test CD running the 32 bit kernel.  Strangely, the issue does not happen with the PAE kernels from the same Test CD.

The code basically calls a JNI function that does a NULL pointer access. We expect this to dump core, but instead we never get back to the shell prompt and the system hangs completely in about 30 seconds.

Instructions for reproducing the issue:

(1) Install the JDK (we are using v 1.5 update 4).

(2) Untar the example tarball (the example can be downloaded from http://www.kymasys.com/java.jni.segv.tar.gz).

(3) from the segv directory execute the following command: "java -Djava.library.path=. TestClass"

Any help would be greatly appreciated.

Thanks in advance.

Sanjay

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