RFR 8230483: Shenandoah: Shenandoah assert_correct failed; Object klass pointer should not be NULL

Zhengyu Gu zgu at redhat.com
Tue Sep 3 16:56:39 UTC 2019

SAP reported shenandoah assertion failure since 2019-07-14.

I could not reproduce locally. I did find an instance of failure in our 
nightlies dated back to 2019-08-27.

I believe it is caused by JDK-8226757, which changed behavior of 

We do have the fix in shenandoah/jdk, but has yet upstreamed.

Webrev: http://cr.openjdk.java.net/~zgu/JDK-8230483/webev.00/

   hotspot_gc_shenandoah (fastdebug and release) on Linux x86_64.



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