StringInternSync2/TestDescription.java FAILED on RISC-V Linux

[adamfarley]

Failing Test Info
Test Name: vmTestbase/gc/gctests/StringInternSync2/TestDescription.java
Test Duration: 51 seconds
Machine it fails on: test-rise-ubuntu2404-riscv64-21, test-rise-ubuntu2404-riscv64-24
Machines it passes on (if intermittent):

Jenkins Test Job Info
Jenkins Test Job Name: Test_openjdk21_hs_extended.openjdk_riscv64_linux_testList_1_rerun
Jenkins Test Job URL: https://ci.adoptium.net/job/Test_openjdk21_hs_extended.openjdk_riscv64_linux_testList_1_rerun/1/
TRSS link for the build (if available): Not available. Deep history found for test target though.

Deep History Link from TRSS (if available) https://trss.adoptium.net/deepHistory?testId=6a5b5f2afc7968006d06a93b

** Rerun in Grinder Link (if available) or Steps to Reproduce**

Grinder rerun link

Java Version output (from console output)

22:05:11  openjdk version "21.0.12.1" 2026-08-18 LTS
22:05:11  OpenJDK Runtime Environment Temurin-21.0.12.1+1 (build 21.0.12.1+1-LTS)
22:05:11  OpenJDK 64-Bit Server VM Temurin-21.0.12.1+1 (build 21.0.12.1+1-LTS, mixed mode, sharing)

Relevant Console Output (showing exceptions/errors/crashes)

02:04:26  Starting Thread[#30,gc.gctests.StringInternSync.StringInternSync$StringGenerator@6e6cdb4d,5,MainThreadGroup]
02:04:26  Exception in 
02:04:26  gc.gctests.StringInternSync.StringInternSync$StringGenerator@56779749
02:04:26  nsk.share.TestFailure: The equal interned strings are not the same.
02:04:26  	at gc.gctests.StringInternSync.StringInternSync$StringGenerator.run(StringInternSync.java:125)
02:04:26  	at nsk.share.runner.ThreadsRunner$ManagedThread.run(ThreadsRunner.java:119)
02:04:26  	at java.base/java.lang.Thread.run(Thread.java:1583)

Attach or link to relevant artifacts