Has been seen only on Linux and with ZGC so far. Another look at JDK-8289764 ?

A log file snippet with the error:

The level = 10 the height = 11
Stress time: 300 seconds
Stress iterations factor: 1
Stress threads factor: 1
Stress runs factor: 1
Max memory: 1038090240
Sleep time: 500
Iterations: 0
Number of threads: 24
Run GC thread: false
Run mem diag thread: false
Run forever: false
Starting Thread[#33,nsk.sysdict.share.SysDictTest$Worker@3d8a47aa,5,MainThreadGroup]
Starting Thread[#34,nsk.sysdict.share.SysDictTest$Worker@732f21b3,5,MainThreadGroup]
Starting Thread[#35,nsk.sysdict.share.SysDictTest$Worker@1cf78f6b,5,MainThreadGroup]
Starting Thread[#36,nsk.sysdict.share.SysDictTest$Worker@4d6ebbbf,5,MainThreadGroup]
Starting Thread[#37,nsk.sysdict.share.SysDictTest$Worker@58bf3f80,5,MainThreadGroup]
Starting Thread[#38,nsk.sysdict.share.SysDictTest$Worker@5297bf9d,5,MainThreadGroup]
Starting Thread[#39,nsk.sysdict.share.SysDictTest$Worker@72bbfe73,5,MainThreadGroup]
Starting Thread[#40,nsk.sysdict.share.SysDictTest$Worker@4a3000d8,5,MainThreadGroup]
Starting Thread[#41,nsk.sysdict.share.SysDictTest$Worker@6b527521,5,MainThreadGroup]
Starting Thread[#42,nsk.sysdict.share.SysDictTest$Worker@4564481,5,MainThreadGroup]
Starting Thread[#43,nsk.sysdict.share.SysDictTest$Worker@29b36a1e,5,MainThreadGroup]
Starting Thread[#44,nsk.sysdict.share.SysDictTest$Worker@634f8930,5,MainThreadGroup]
Starting Thread[#45,nsk.sysdict.share.SysDictTest$Worker@1b4c0305,5,MainThreadGroup]
Starting Thread[#46,nsk.sysdict.share.SysDictTest$Worker@2d882ea1,5,MainThreadGroup]
Starting Thread[#47,nsk.sysdict.share.SysDictTest$Worker@1f595294,5,MainThreadGroup]
Starting Thread[#48,nsk.sysdict.share.SysDictTest$Worker@405e46,5,MainThreadGroup]
Starting Thread[#49,nsk.sysdict.share.SysDictTest$Worker@7bef2160,5,MainThreadGroup]
Starting Thread[#50,nsk.sysdict.share.SysDictTest$Worker@177ee59a,5,MainThreadGroup]
Starting Thread[#51,nsk.sysdict.share.SysDictTest$Worker@4266c813,5,MainThreadGroup]
Starting Thread[#52,nsk.sysdict.share.SysDictTest$Worker@40d61c77,5,MainThreadGroup]
Starting Thread[#53,nsk.sysdict.share.SysDictTest$Worker@42b0d12c,5,MainThreadGroup]
Starting Thread[#54,nsk.sysdict.share.SysDictTest$Worker@2282aed5,5,MainThreadGroup]
Starting Thread[#55,nsk.sysdict.share.SysDictTest$Worker@56d0ccc6,5,MainThreadGroup]
Starting Thread[#56,nsk.sysdict.share.SysDictTest$Worker@261547cf,5,MainThreadGroup]
Exception in
nsk.sysdict.share.SysDictTest$Worker@1f595294
java.lang.OutOfMemoryError: Java heap space: failed reallocation of scalar replaced objects
Exception in
nsk.sysdict.share.SysDictTest$Worker@4a3000d8
java.lang.OutOfMemoryError: Java heap space: failed reallocation of scalar replaced objects
Exception in
nsk.sysdict.share.SysDictTest$Worker@6b527521
java.lang.OutOfMemoryError: Java heap space: failed reallocation of scalar replaced objects
Exception in
nsk.sysdict.share.SysDictTest$Worker@732f21b3
java.lang.OutOfMemoryError: Java heap space: failed reallocation of scalar replaced objects
Exception in
nsk.sysdict.share.SysDictTest$Worker@5297bf9d
java.lang.OutOfMemoryError: Java heap space: failed reallocation of scalar replaced objects
Exception in
nsk.sysdict.share.SysDictTest$Worker@42b0d12c
java.lang.OutOfMemoryError: Java heap space: failed reallocation of scalar replaced objects
Failures summary:
java.lang.OutOfMemoryError: Java heap space: failed reallocation of scalar replaced objects
java.lang.OutOfMemoryError: Java heap space: failed reallocation of scalar replaced objects
java.lang.OutOfMemoryError: Java heap space: failed reallocation of scalar replaced objects
java.lang.OutOfMemoryError: Java heap space: failed reallocation of scalar replaced objects
java.lang.OutOfMemoryError: Java heap space: failed reallocation of scalar replaced objects
java.lang.OutOfMemoryError: Java heap space: failed reallocation of scalar replaced objects
----------System.err:(14/768)----------
nsk.share.TestFailure: Test exit code: 97
at nsk.share.test.Tests$TestRunner.execute(Tests.java:90)
at nsk.share.test.Tests$TestRunner.run(Tests.java:96)
at nsk.share.test.Tests.runTest(Tests.java:102)
at nsk.sysdict.share.BTreeTest.main(BTreeTest.java:42)
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104)
at java.base/java.lang.reflect.Method.invoke(Method.java:578)
at com.sun.javatest.regtest.agent.MainWrapper$MainThread.run(MainWrapper.java:125)
at java.base/java.lang.Thread.run(Thread.java:1623)

JavaTest Message: Test threw exception: nsk.share.TestFailure: Test exit code: 97