Please, review the following test change Issue : https://bugs.openjdk.java.net/browse/JDK-8046869 Webrev: http://cr.openjdk.java.net/~jbachorik/8046869/webrev.00
These two tests are timing out because they are deliberately crashing the virtual machine. This crash used to lead to coredump generation and the tests used to time out while dumping the core.
The fix is to add '-XX:-CreateCoredumpOnCrash' VM option to suppress the core generation.
Thanks, -JB-