crash on ZGC try_mark_object

[Ron Pressler]

Loom does not yet support ZGC, but it’s in the works.
Very soon, I hope.

- Ron


On 8 April 2020 at 20:05:36, Alen Vrečko (alen.vrecko at gmail.com) wrote:

Hello, everyone.  

Running non-loomed code with ZGC on JDK-14 = everything is fine.  
Running the same load on loomed code on EA build = consistent crash about  
once an hour.  

Does it ring any bells?  

I found this, but should be fixed already?  
https://bugs.openjdk.java.net/browse/JDK-8229221  

# A fatal error has been detected by the Java Runtime Environment:  
#  
# SIGSEGV (0xb) at pc=0x00007fc0d5c49848, pid=8177, tid=8196  
#  
# JRE version: OpenJDK Runtime Environment (15.0+4) (build 15-loom+4-55)  
# Java VM: OpenJDK 64-Bit Server VM (15-loom+4-55, mixed mode, z gc,  
linux-amd64)  
# Problematic frame:  
# V [libjvm.so+0xe2b848] ZMark::try_mark_object(ZMarkCache*, unsigned  
long, bool)+0x1b8  

Best regards  
Alen