crash on ZGC try_mark_object

[Alen Vrečko]

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