This test was recently added as part of the fix for JDK-8048556. It turns out it's not a very good test, is currently at least very hard to fix, and also very intermittently fails. JDK-8227225 and followups for other collectors will provide the information needed to fix the test.

diff -r c38cca5ffb66 -r 0c6e374d42e8 test/hotspot/jtreg/ProblemList.txt
--- a/test/hotspot/jtreg/ProblemList.txt Mon Aug 05 11:16:48 2019 -0400
+++ b/test/hotspot/jtreg/ProblemList.txt Mon Aug 05 21:12:11 2019 -0400
@@ -77,6 +77,7 @@
 gc/g1/humongousObjects/objectGraphTest/TestObjectGraphAfterGC.java 8156755 generic-all
 gc/g1/logging/TestG1LoggingFailure.java 8169634 generic-all
 gc/g1/humongousObjects/TestHeapCounters.java 8178918 generic-all
+gc/stress/gclocker/TestExcessGCLockerCollections.java 8229120 generic-all
 gc/stress/gclocker/TestGCLockerWithParallel.java 8180622 generic-all
 gc/stress/gclocker/TestGCLockerWithG1.java 8180622 generic-all
 gc/stress/TestJNIBlockFullGC/TestJNIBlockFullGC.java 8192647 generic-all