JVM Crash @ ZPageCache::alloc_small_page()

[Ruslan Synytsky]

Hi Per, we faced a strange issue with constant JVM crashes when using ZGC.
The crash log is attached. We run JVM inside Virtuozzo containers. Could
you please take a look and advise on how it can be fixed?
Thank you

#
# A fatal error has been detected by the Java Runtime Environment:
#
#  SIGSEGV (0xb) at pc=0x00007f4f5e226f43, pid=6428, tid=6544
#
# JRE version: OpenJDK Runtime Environment (15.0.1+9) (build 15.0.1+9-18)
# Java VM: OpenJDK 64-Bit Server VM (15.0.1+9-18, mixed mode, sharing,
tiered, z gc, linux-amd64)
# Problematic frame:
# V  [libjvm.so+0xdbdf43]  ZPageCache::alloc_small_page()+0x33
#
# No core dump will be written. Core dumps have been disabled. To enable
core dumping, try "ulimit -c unlimited" before starting Java again
#
# If you would like to submit a bug report, please visit:
#   https://bugreport.java.com/bugreport/crash.jsp
#

---------------  S U M M A R Y ------------

Command Line: -XX:+UnlockExperimentalVMOptions -XX:ZCollectionInterval=900
-Xmaxf0.3 -Xminf0.1 -Xmx409M -Xms32M -XX:+UseZGC -Xlog:gc
jelastic-helloworld-1.1.war

Host: Intel(R) Xeon(R) E-2136 CPU @ 3.30GHz, 1 cores, 512M, CentOS Linux
release 7.8.2003 (Core)
Time: Thu Nov  5 10:32:35 2020 UTC elapsed time: 0.105994 seconds (0d 0h 0m
0s)


-- 
Ruslan Synytsky
CEO @ Jelastic Multi-Cloud PaaS <https://jelastic.com/>