jdk26 unfreed blocks remaining at shutdown

[pshipton]

14:05:09  openjdk version "26-internal" 2026-03-17
14:05:09  OpenJDK Runtime Environment (build 26-internal-adhoc.****.BuildJDKnextaarch64macPersonal)
14:05:09  Eclipse OpenJ9 VM (build 26-internal-adhoc.****.BuildJDKnextaarch64macPersonal-master-51e45d9c91a, JRE 26 Mac OS X aarch64-64-Bit 20251031_234 (JIT enabled, AOT enabled)
14:05:09  OpenJ9   - 51e45d9c91a
14:05:09  OMR      - 063a87510ac
14:05:09  JCL      - 350024efacb based on jdk-26+21)

https://openj9-jenkins.osuosl.org/job/Test_openjdknext_j9_sanity.functional_aarch64_mac_Personal_testList_0/52
cmdLineTester_jfrEvents_0

14:15:41  Testing: runWorkload - approx 300 seconds
14:15:42  Test start time: 2025/10/31 05:15:41 Australian Eastern Standard Time
14:15:42  Running command: "/Users/jenkins/workspace/Test_openjdknext_j9_sanity.functional_aarch64_mac_Personal_testList_0/jdkbinary/j2sdk-image/bin/java"   -XX:StartFlightRecording -Dibm.java9.forceCommonCleanerShutdown=true -Xint -Xcheck:memory --add-exports java.base/com.ibm.oti.vm=ALL-UNNAMED -cp /Users/jenkins/workspace/Test_openjdknext_j9_sanity.functional_aarch64_mac_Personal_testList_0/aqa-tests/TKG/../../jvmtest/functional/cmdLineTests/jfr/jfr.jar org.openj9.test.WorkLoad 10 100 10
...
14:17:36   [ERR] WARNING: 5209 unfreed blocks remaining at shutdown!

https://openj9-jenkins.osuosl.org/job/Test_openjdknext_j9_sanity.functional_aarch64_mac_Personal_testList_1/52
cmdLineTester_jfr_0

14:40:18  Testing: JFR File name test - approx 5mins
14:40:18  Test start time: 2025/10/31 05:40:15 Australian Eastern Standard Time
14:40:18  Running command: "/Users/jenkins/workspace/Test_openjdknext_j9_sanity.functional_aarch64_mac_Personal_testList_1/jdkbinary/j2sdk-image/bin/java"   --add-exports java.base/com.ibm.oti.vm=ALL-UNNAMED -Xint -Xgcpolicy:nogc -Xcheck:memory -Dibm.java9.forceCommonCleanerShutdown=true -cp /Users/jenkins/workspace/Test_openjdknext_j9_sanity.functional_aarch64_mac_Personal_testList_1/aqa-tests/TKG/../../jvmtest/functional/cmdLineTests/jfr/jfr.jar org.openj9.test.JFRFileNameTest
...
14:40:35   [ERR] WARNING: 4567 unfreed blocks remaining at shutdown!

Both of these repeated in a 1x grinder

[pshipton]

@tajila fyi

[pshipton]

Also testMemoryLeaks from VmArgumentTests, which I'm guessing is related.

https://openj9-jenkins.osuosl.org/job/Test_openjdknext_j9_extended.functional_aarch64_mac_Personal_testList_0/4/

[tajila]

I think they are all the same issue. We must not be shutting down properly.