The following test failed in the JDK15 CI:

serviceability/sa/ClhsdbCDSCore.java

Here's a snippet from the log file:

getCoreFileLocation found stringWithLocation = core.19215
----------System.err:(51/8612)----------
java.lang.Error: Couldn't find core file location in: '#
# A fatal error has been detected by the Java Runtime Environment:
#
# SIGSEGV (0xb) at pc=0x00000001066f50d4, pid=19215, tid=5891
#
# JRE version: OpenJDK Runtime Environment (15.0+17) (build 15-ea+17-717)
# Java VM: OpenJDK 64-Bit Server VM (15-ea+17-717, mixed mode, sharing, tiered, compressed oops, g1 gc, bsd-amd64)
# Problematic frame:
# V [libjvm.dylib+0x6f50d4] EnableIf<HasDecorator<128ull, MO_VOLATILE>::value, void>::type RawAccessBarrier<128ull>::store_internal<128ull, int>(void*, int)+0x4
#
# Core dump will be written. Default location: core.19215
#
# An error report file with more information is saved as:
# /System/Volumes/Data/mesos/work_dir/slaves/a6efd25a-e066-4559-9516-837618a35e9e-S23/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/7023549c-72f5-413c-a8bc-9ca82e84e9ae/runs/f32a054f-668b-4914-9311-c88bd7c5f4e5/testoutput/test-support/jtreg_open_test_hotspot_jtreg_hotspot_serviceability/scratch/3/hs_err_pid19215.log
#
# If you would like to submit a bug report, please visit:
# https://bugreport.java.com/bugreport/crash.jsp
#
sh: line 1: 19215 Abort trap: 6 /System/Volumes/Data/mesos/work_dir/jib-master/install/jdk-15+17-717/macosx-x64-open.jdk/jdk-15.jdk/Contents/Home/bin/java -cp /System/Volumes/Data/mesos/work_dir/slaves/a6efd25a-e066-4559-9516-837618a35e9e-S23/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/7023549c-72f5-413c-a8bc-9ca82e84e9ae/runs/f32a054f-668b-4914-9311-c88bd7c5f4e5/testoutput/test-support/jtreg_open_test_hotspot_jtreg_hotspot_serviceability/classes/2/serviceability/sa/ClhsdbCDSCore.d:/System/Volumes/Data/mesos/work_dir/jib-master/install/jdk-15+17-717/src.full/open/test/hotspot/jtreg/serviceability/sa:/System/Volumes/Data/mesos/work_dir/slaves/a6efd25a-e066-4559-9516-837618a35e9e-S23/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/7023549c-72f5-413c-a8bc-9ca82e84e9ae/runs/f32a054f-668b-4914-9311-c88bd7c5f4e5/testoutput/test-support/jtreg_open_test_hotspot_jtreg_hotspot_serviceability/classes/2/test/lib:/System/Volumes/Data/mesos/work_dir/jib-master/install/jdk-15+17-717/src.full/open/test/lib:/System/Volumes/Data/mesos/work_dir/jib-master/install/jtreg/5.0/b01/bundles/jtreg_bin-5.0.zip/jtreg/lib/javatest.jar:/System/Volumes/Data/mesos/work_dir/jib-master/install/jtreg/5.0/b01/bundles/jtreg_bin-5.0.zip/jtreg/lib/jtreg.jar -XX:MaxRAMPercentage=4 -Xmx512m -XX:+UnlockDiagnosticVMOptions -XX:SharedArchiveFile=ArchiveForClhsdbCDSCore.jsa -XX:+CreateCoredumpOnCrash -Xshare:auto -XX:+ProfileInterpreter --add-exports=java.base/jdk.internal.misc=ALL-UNNAMED CrashApp
'
at ClhsdbCDSCore.main(ClhsdbCDSCore.java:143)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:564)
at com.sun.javatest.regtest.agent.MainWrapper$MainThread.run(MainWrapper.java:127)
at java.base/java.lang.Thread.run(Thread.java:832)

JavaTest Message: Test threw exception: java.lang.Error: Couldn't find core file location in: '#
# A fatal error has been detected by the Java Runtime Environment:
#
# SIGSEGV (0xb) at pc=0x00000001066f50d4, pid=19215, tid=5891
#
# JRE version: OpenJDK Runtime Environment (15.0+17) (build 15-ea+17-717)
# Java VM: OpenJDK 64-Bit Server VM (15-ea+17-717, mixed mode, sharing, tiered, compressed oops, g1 gc, bsd-amd64)
# Problematic frame:
# V [libjvm.dylib+0x6f50d4] EnableIf<HasDecorator<128ull, MO_VOLATILE>::value, void>::type RawAccessBarrier<128ull>::store_internal<128ull, int>(void*, int)+0x4
#
# Core dump will be written. Default location: core.19215
#
# An error report file with more information is saved as:
# /System/Volumes/Data/mesos/work_dir/slaves/a6efd25a-e066-4559-9516-837618a35e9e-S23/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/7023549c-72f5-413c-a8bc-9ca82e84e9ae/runs/f32a054f-668b-4914-9311-c88bd7c5f4e5/testoutput/test-support/jtreg_open_test_hotspot_jtreg_hotspot_serviceability/scratch/3/hs_err_pid19215.log
#
# If you would like to submit a bug report, please visit:
# https://bugreport.java.com/bugreport/crash.jsp
#
sh: line 1: 19215 Abort trap: 6 /System/Volumes/Data/mesos/work_dir/jib-master/install/jdk-15+17-717/macosx-x64-open.jdk/jdk-15.jdk/Contents/Home/bin/java -cp /System/Volumes/Data/mesos/work_dir/slaves/a6efd25a-e066-4559-9516-837618a35e9e-S23/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/7023549c-72f5-413c-a8bc-9ca82e84e9ae/runs/f32a054f-668b-4914-9311-c88bd7c5f4e5/testoutput/test-support/jtreg_open_test_hotspot_jtreg_hotspot_serviceability/classes/2/serviceability/sa/ClhsdbCDSCore.d:/System/Volumes/Data/mesos/work_dir/jib-master/install/jdk-15+17-717/src.full/open/test/hotspot/jtreg/serviceability/sa:/System/Volumes/Data/mesos/work_dir/slaves/a6efd25a-e066-4559-9516-837618a35e9e-S23/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/7023549c-72f5-413c-a8bc-9ca82e84e9ae/runs/f32a054f-668b-4914-9311-c88bd7c5f4e5/testoutput/test-support/jtreg_open_test_hotspot_jtreg_hotspot_serviceability/classes/2/test/lib:/System/Volumes/Data/mesos/work_dir/jib-master/install/jdk-15+17-717/src.full/open/test/lib:/System/Volumes/Data/mesos/work_dir/jib-master/install/jtreg/5.0/b01/bundles/jtreg_bin-5.0.zip/jtreg/lib/javatest.jar:/System/Volumes/Data/mesos/work_dir/jib-master/install/jtreg/5.0/b01/bundles/jtreg_bin-5.0.zip/jtreg/lib/jtreg.jar -XX:MaxRAMPercentage=4 -Xmx512m -XX:+UnlockDiagnosticVMOptions -XX:SharedArchiveFile=ArchiveForClhsdbCDSCore.jsa -XX:+CreateCoredumpOnCrash -Xshare:auto -XX:+ProfileInterpreter --add-exports=java.base/jdk.internal.misc=ALL-UNNAMED CrashApp
'
JavaTest Message: shutting down test

STATUS:Failed.`main' threw exception: java.lang.Error: Couldn't find core file location in: '# # A fatal error has been detected by the Java Runtime Environment: # # SIGSEGV (0xb) at pc=0x00000001066f50d4, pid=19215, tid=5891 # # JRE version: OpenJDK Runtime Environment (15.0+17) (build 15-ea+17-717) # Java VM: OpenJDK 64-Bit Server VM (15-ea+17-717, mixed mode, sharing, tiered, compressed oops, g1 gc, bsd-amd64) # Problematic frame: # V [libjvm.dylib+0x6f50d4] EnableIf<HasDecorator<128ull, MO_VOLATILE>::value, void>::type RawAccessBarrier<128ull>::store_internal<128ull, int>(void*, int)+0x4 # # Core dump will be written. Default location: core.19215 # # An error report file with more information is saved as: # /System/Volumes/Data/mesos/work_dir/slaves/a6efd25a-e066-4559-9516-837618a35e9e-S23/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/7023549c-72f5-413c-a8bc-9ca82e84e9ae/runs/f32a054f-668b-4914-9311-c88bd7c5f4e5/testoutput/test-support/jtreg_open_test_hotspot_jtreg_hotspot_serviceability/scratch/3/hs_err_pid19215.log # # If you would like to submit a bug report, please visit: # https://bugreport.java.com/bugreport/crash.jsp # sh: line 1: 19215 Abort trap: 6 /System/Volumes/Data/mesos/work_dir/jib-master/install/jdk-15+17-717/macosx-x64-open.jdk/jdk-15.jdk/Contents/Home/bin/java -cp /System/Volumes/Data/mesos/work_dir/slaves/a6efd25a-e066-4559-9516-837618a35e9e-S23/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/7023549c-72f5-413c-a8bc-9ca82e84e9ae/runs/f32a054f-668b-4914-9311-c88bd7c5f4e5/testoutput/test-support/jtreg_open_test_hotspot_jtreg_hotspot_serviceability/classes/2/serviceability/sa/ClhsdbCDSCore.d:/System/Volumes/Data/mesos/work_dir/jib-master/install/jdk-15+17-717/src.full/open/test/hotspot/jtreg/serviceability/sa:/System/Volumes/Data/mesos/work_dir/slaves/a6efd25a-e066-4559-9516-837618a35e9e-S23/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/7023549c-72f5-413c-a8bc-9ca82e84e9ae/runs/f32a054f-668b-4914-9311-c88bd7c5f4e5/testoutput/test-support/jtreg_open_test_hotspot_jtreg_hotspot_serviceability/classes/2/test/lib:/System/Volumes/Data/mesos/work_dir/jib-master/install/jdk-15+17-717/src.full/open/test/lib:/System/Volumes/Data/mesos/work_dir/jib-master/install/jtreg/5.0/b01/bundles/jtreg_bin-5.0.zip/jtreg/lib/javatest.jar:/System/Volumes/Data/mesos/work_dir/jib-master/install/jtreg/5.0/b01/bundles/jtreg_bin-5.0.zip/jtreg/lib/jtreg.jar -XX:MaxRAMPercentage=4 -Xmx512m -XX:+UnlockDiagnosticVMOptions -XX:SharedArchiveFile=ArchiveForClhsdbCDSCore.jsa -XX:+CreateCoredumpOnCrash -Xshare:auto -XX:+ProfileInterpreter --add-exports=java.base/jdk.internal.misc=ALL-UNNAMED CrashApp '
----------rerun:(35/6337)*----------


Please note that the SIGSEGV crash is NOT the failure mode.
The failure mode is indicated by:

java.lang.Error: Couldn't find core file location in: ...

But the failure message doesn't make sense relative to
this message:

getCoreFileLocation found stringWithLocation = core.19215

So one part of the test claims to have found the core file
location while another part says that it couldn't find the
core file location.

The test machine in question is running macOS 10.5.3 so
that might be part of the problem.