ASSERTION FAILED ClassLoaderManager.cpp:396 ((false && (!markMap->isBitSet(classObject))))

[pshipton]

https://openj9-jenkins.osuosl.org/job/Test_openjdk17_j9_sanity.openjdk_x86-64_linux_Nightly_testList_0/105
jdk_lang_j9_0
java/lang/invoke/defineHiddenClass/PreviewHiddenClass.java

https://openj9-artifactory.osuosl.org/artifactory/ci-openj9/Test/Test_openjdk17_j9_sanity.openjdk_x86-64_linux_Nightly_testList_0/105/openjdk_test_output.tar.gz

22:51:51 02:29:32.093 0x7f911c003c00 j9mm.107 * ** ASSERTION FAILED ** at /home/jenkins/workspace/Build_JDK17_x86-64_linux_Nightly/openj9/runtime/gc_base/ClassLoaderManager.cpp:396: ((false && (!markMap->isBitSet(classObject))))

Seen before in #14243

[pshipton]

@dmitripivkine fyi

[pshipton]

Another in https://openj9-jenkins.osuosl.org/job/Test_openjdk21_j9_sanity.openjdk_x86-64_linux_Nightly_testList_0/208

[dmitripivkine]

I have suspicion this is the same problem as #20150 I am working currently. And this is most likely the regression from #20132

[dmitripivkine]

I am confident this is the same problem as #20150. However keeping in mind we have observed this problem before in #14243 we can have this item opened until #20150 is fixed.

[dmitripivkine]

Class detection in class loader in Balanced is done by scanning class loader hash table to discover classes for mixed objects and scanning array components lists from this mixed objects. In theory it should provide full coverage for class loader content. This assertion is triggered is there is class has not been reached during scan.
I am sure last triggering was a result of regression fixed in #20150.
However we observed this problem before in #14243, so keep this item opened for some time. It is possible there is a corner case somewhere we are missing.

[dmitripivkine]

Looks like introduced regression has been fixed and there were no new occurrences for now. Closing.

[github-actions]

Issue Number: 20165
Status: Closed
Actual Components: comp:gc, test failure
Actual Assignees: No one :(
PR Assignees: No one :(