Verified that the following test still fails in the Valhalla repo in Tier5 when
removed from the ProblemList:

resourcehogs/serviceability/sa/ClhsdbRegionDetailsScanOopsForG1.java

Here's a log file snippet from the linux-x64-debug log:

Region: 0x00000007ffa00000,0x00000007ffc00000,0x00000007ffc00000:Old
Region: 0x00000007ffc00000,0x00000007ffe00000,0x00000007ffe00000:Old
Region: 0x00000007ffe00000,0x00000007fff2a180,0x0000000800000000:Old
hsdb> + quit

Starting clhsdb against 1580649
[2026-02-06T16:51:50.400969620Z] Gathering output for process 1580904
[2026-02-06T16:51:56.524017617Z] Waiting for completion for process 1580904
[2026-02-06T16:51:56.524242442Z] Waiting for completion finished for process 1580904
Output:
Attaching to process 1580649, please wait...
hsdb> hsdb> + verbose true
hsdb> + scanoops 0x0000000600600000 0x0000000600800000
hsdb> + quit

 LingeredApp stdout: [];
 LingeredApp stderr: []
 LingeredApp exitValue = 0
----------System.err:(23/1359)*----------
 stdout: [ + scanoops 0x0000000600600000 0x0000000600800000
];
 stderr: [ + scanoops 0x0000000600600000 0x0000000600800000
]
 exitValue = -1

java.lang.RuntimeException: Test ERROR java.lang.RuntimeException: '\\[Ljava/lang/String' missing from stdout/stderr
at ClhsdbRegionDetailsScanOopsForG1.main(ClhsdbRegionDetailsScanOopsForG1.java:86)
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104)
at java.base/java.lang.reflect.Method.invoke(Method.java:565)
at com.sun.javatest.regtest.agent.MainWrapper$MainTask.run(MainWrapper.java:138)
at java.base/java.lang.Thread.run(Thread.java:1516)
Caused by: java.lang.RuntimeException: '\\[Ljava/lang/String' missing from stdout/stderr
at jdk.test.lib.process.OutputAnalyzer.shouldMatch(OutputAnalyzer.java:407)
at ClhsdbLauncher.runCmd(ClhsdbLauncher.java:175)
at ClhsdbLauncher.run(ClhsdbLauncher.java:212)
at ClhsdbRegionDetailsScanOopsForG1.main(ClhsdbRegionDetailsScanOopsForG1.java:82)
... 4 more

JavaTest Message: Test threw exception: java.lang.RuntimeException: Test ERROR java.lang.RuntimeException: '\\[Ljava/lang/String' missing from stdout/stderr
JavaTest Message: shutting down test

STATUS:Failed.`main' threw exception: java.lang.RuntimeException: Test ERROR java.lang.RuntimeException: '\\[Ljava/lang/String' missing from stdout/stderr
----------rerun:(38/10023)*----------

This failure mode happened 14 times in my Tier5 testing on all
platforms with several different JVM options.

This failure looks like this Graal bug:

    JDK-8248611 [Graal] resourcehogs/serviceability/sa/ClhsdbRegionDetailsScanOopsForG1.java fails with ''\\[Ljava/lang/String' missing from stdout/stderr'

However, I don't want to hijack the Graal issue for Valhalla sightings.