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Created attachment 149168 [details] crash logs from JDK7u67 and JDK8u20 Please try following: - start NetBeans - build IDE using (with JDK7) $ ant -f /home/vriha/repo/web-main/nbbuild build-nozip - open e.g. html.knockout module from NetBeans repository in NetBeans - open org.netbeans.modules.html.knockout.cc.CompletionTest.java - press Shift+F6 to run the file, this executes following $ ant -f /home/vriha/repo/web-main/html.knockout -Dtest.type=qa-functional -Dcontinue.after.failing.tests=true -Dtest.includes=org/netbeans/modules/html/knockout/cc/CompletionTest.java test-single => in almost every attempt, JVM of the launched IDE instance keep crashing (I'm attaching few crash logs for reference). It basically impossible to run tests from IDE. I tried to start the test from command line and it worked fine in every attempt. The only issue is when tests are started from IDE. I also tried to run nbbuild module from IDE which starts the custom built NetBeans and haven't seen JVM crash either I reproduced this with JDK7u67, JDK8u20 and JDK7u65 Ubuntu 14.04 Product Version: NetBeans IDE Dev (Build 201409120001) Java: 1.8.0_20; Java HotSpot(TM) Client VM 25.20-b23 Runtime: Java(TM) SE Runtime Environment 1.8.0_20-b26 System: Linux version 3.13.0-32-generic running on i386; UTF-8; en_US (nb)
Created attachment 149170 [details] output from running the test file
Sadly it crashes from command line as well...
After a day of attempts, I'd say that approx. in 2/3 of attempts JVM crashes
Vlado, could you try with JDK 9? That's what JDK team is usually interested in when looking into a crash. Another question is if it started happening with a certain update of JDK. So, could you try one of the older updates, e.g. JDK 7u25, and JDK 8?
Created attachment 149209 [details] crash logs from JDK8, JDK7u5, JDK7u25 I've reproduced it with JDK8, JDK7u5 and JDK7u25. Sadly I cannot try it with JDK9 due to issue 247108. I'm attaching few more logs for reference. The crashlogs are unfortunately slightly different. It could be related to some changes in Ubuntu 14.04 and related libs
I've tried it maybe 10 times so far on JDK9 and without single crash. I can't say for sure if the issue does not apply to JDK9 but it definitely looks better so far. I'll keep on using JDK9 for writing tests and will add more details after longer observation.
After a lot of attempts, I can "confirm" it does not happen with JDK9
Vlado, if you can reproduce with 8u45 (or better with 8u51) and produce also core dump, reopen with the new crashlog and I'll file to JDK. Thanks. Producing core dump on Ubuntu usually needs to have set "ulimit -c unlimited".