The following test failed in the JDK14 CI:

vmTestbase/gc/memory/Churn/Churn3/Churn3.java

Here's a snippet from the log file:

Starting Thread[gc.memory.Churn.Churn3.Churn3$ThreadObject@75e0e235,5,MainThreadGroup]
Starting Thread[gc.memory.Churn.Churn3.Churn3$ThreadObject@761456a2,5,MainThreadGroup]
Starting Thread[gc.memory.Churn.Churn3.Churn3$ThreadObject@423f159b,5,MainThreadGroup]
#
# A fatal error has been detected by the Java Runtime Environment:
#
# SIGSEGV (0xb) at pc=0x00007fe6442c336c, pid=9498, tid=9508
#
# JRE version: Java(TM) SE Runtime Environment (14.0+10) (build 14-ea+10-298)
# Java VM: Java HotSpot(TM) 64-Bit Server VM (14-ea+10-298, mixed mode, tiered, z gc, linux-amd64)
# Problematic frame:
# V [libjvm.so+0xe3936c] ZRelocate::relocate_object(ZForwarding*, unsigned long) const+0x8c
#
# Core dump will be written. Default location: /opt/mach5/mesos/work_dir/slaves/00f4d7f9-7805-4b6a-aef8-9bb130db2435-S1023/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/3f85efbc-aeae-479c-96fc-e215cc8d2aa3/runs/20b70c86-f269-4435-af93-3d7f37f00bd8/testoutput/test-support/jtreg_open_test_hotspot_jtreg_vmTestbase_vm_gc_misc/scratch/2/core.9498
#
# An error report file with more information is saved as:
# /opt/mach5/mesos/work_dir/slaves/00f4d7f9-7805-4b6a-aef8-9bb130db2435-S1023/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/3f85efbc-aeae-479c-96fc-e215cc8d2aa3/runs/20b70c86-f269-4435-af93-3d7f37f00bd8/testoutput/test-support/jtreg_open_test_hotspot_jtreg_vmTestbase_vm_gc_misc/scratch/2/hs_err_pid9498.log
#
# If you would like to submit a bug report, please visit:
# http://bugreport.java.com/bugreport/crash.jsp
#
----------System.err:(0/0)----------
----------rerun:(34/7123)*----------

This is yet another SIGSEGV on an OCI machine so I've
tagged this with 'needs-OCI-investigation'.