The following test failed in the JDK26 CI:

runtime/cds/appcds/LotsOfSyntheticClasses.java

Here's a snippet from the log file:

#section:driver
----------messages:(11/359)----------
command: driver LotsOfSyntheticClasses
reason: User specified action: run driver/timeout=500 LotsOfSyntheticClasses
started: Fri Jul 11 04:16:53 UTC 2025
Mode: agentvm
Agent id: 7
Process id: 1218354
Timeout signalled after 2000 seconds
Timeout information:
--- Timeout information end.
finished: Fri Jul 11 05:01:00 UTC 2025
elapsed time (seconds): 2646.89
----------configuration:(15/2302)----------

<snip>

----------System.out:(19/9474)----------
Compiling /opt/mach5/mesos/work_dir/slaves/d2398cde-9325-49c3-b030-8961a4f0a253-S676640/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/a417ec8a-f693-479e-80a1-10e6405dca59/runs/7abce314-e35e-4768-b85a-941eb75bd2de/testoutput/test-support/jtreg_open_test_hotspot_jtreg_hotspot_aot_classlinking/scratch/0/src into /opt/mach5/mesos/work_dir/slaves/d2398cde-9325-49c3-b030-8961a4f0a253-S676640/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/a417ec8a-f693-479e-80a1-10e6405dca59/runs/7abce314-e35e-4768-b85a-941eb75bd2de/testoutput/test-support/jtreg_open_test_hotspot_jtreg_hotspot_aot_classlinking/scratch/0/test.jar
Command line: [/opt/mach5/mesos/work_dir/jib-master/install/jdk-26+7-598/linux-aarch64-debug.jdk/jdk-26/fastdebug/bin/java -cp /opt/mach5/mesos/work_dir/slaves/d2398cde-9325-49c3-b030-8961a4f0a253-S676640/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/a417ec8a-f693-479e-80a1-10e6405dca59/runs/7abce314-e35e-4768-b85a-941eb75bd2de/testoutput/test-support/jtreg_open_test_hotspot_jtreg_hotspot_aot_classlinking/classes/3/runtime/cds/appcds/LotsOfSyntheticClasses.d:/opt/mach5/mesos/work_dir/jib-master/install/jdk-26+7-598/src.full/open/test/hotspot/jtreg/runtime/cds/appcds:/opt/mach5/mesos/work_dir/slaves/d2398cde-9325-49c3-b030-8961a4f0a253-S676640/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/a417ec8a-f693-479e-80a1-10e6405dca59/runs/7abce314-e35e-4768-b85a-941eb75bd2de/testoutput/test-support/jtreg_open_test_hotspot_jtreg_hotspot_aot_classlinking/classes/3/test/lib:/opt/mach5/mesos/work_dir/slaves/d2398cde-9325-49c3-b030-8961a4f0a253-S676640/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/a417ec8a-f693-479e-80a1-10e6405dca59/runs/7abce314-e35e-4768-b85a-941eb75bd2de/testoutput/test-support/jtreg_open_test_hotspot_jtreg_hotspot_aot_classlinking/classes/3/test/hotspot/jtreg/runtime/cds/appcds:/opt/mach5/mesos/work_dir/jib-master/install/jtreg/7.5.2/1/bundles/jtreg-7.5.2+1.zip/jtreg/lib/jtreg.jar:/opt/mach5/mesos/work_dir/jib-master/install/jtreg/7.5.2/1/bundles/jtreg-7.5.2+1.zip/jtreg/lib/junit-platform-console-standalone-1.11.0.jar:/opt/mach5/mesos/work_dir/jib-master/install/jtreg/7.5.2/1/bundles/jtreg-7.5.2+1.zip/jtreg/lib/testng-7.3.0.jar:/opt/mach5/mesos/work_dir/jib-master/install/jtreg/7.5.2/1/bundles/jtreg-7.5.2+1.zip/jtreg/lib/jcommander-1.82.jar:/opt/mach5/mesos/work_dir/jib-master/install/jtreg/7.5.2/1/bundles/jtreg-7.5.2+1.zip/jtreg/lib/guice-5.1.0.jar -XX:MaxRAMPercentage=6.25 -Dtest.boot.jdk=/opt/mach5/mesos/work_dir/jib-master/install/jdk/24/36/bundles/linux-aarch64/jdk-24_linux-aarch64_bin.tar.gz/jdk-24 -Djava.io.tmpdir=/opt/mach5/mesos/work_dir/slaves/d2398cde-9325-49c3-b030-8961a4f0a253-S676640/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/a417ec8a-f693-479e-80a1-10e6405dca59/runs/7abce314-e35e-4768-b85a-941eb75bd2de/testoutput/test-support/jtreg_open_test_hotspot_jtreg_hotspot_aot_classlinking/tmp -XX:+AOTClassLinking -cp /opt/mach5/mesos/work_dir/slaves/d2398cde-9325-49c3-b030-8961a4f0a253-S676640/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/a417ec8a-f693-479e-80a1-10e6405dca59/runs/7abce314-e35e-4768-b85a-941eb75bd2de/testoutput/test-support/jtreg_open_test_hotspot_jtreg_hotspot_aot_classlinking/scratch/0/test.jar -Xshare:dump -Xlog:cds -XX:SharedArchiveFile=/opt/mach5/mesos/work_dir/slaves/d2398cde-9325-49c3-b030-8961a4f0a253-S676640/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/a417ec8a-f693-479e-80a1-10e6405dca59/runs/7abce314-e35e-4768-b85a-941eb75bd2de/testoutput/test-support/jtreg_open_test_hotspot_jtreg_hotspot_aot_classlinking/scratch/0/appcds-04h18m05s374.jsa -XX:ExtraSharedClassListFile=/opt/mach5/mesos/work_dir/slaves/d2398cde-9325-49c3-b030-8961a4f0a253-S676640/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/a417ec8a-f693-479e-80a1-10e6405dca59/runs/7abce314-e35e-4768-b85a-941eb75bd2de/testoutput/test-support/jtreg_open_test_hotspot_jtreg_hotspot_aot_classlinking/scratch/0/runtime.cds.appcds.LotsOfSyntheticClasses.java-test.classlist Main -XX:+IgnoreUnrecognizedVMOptions -XX:-VerifyDependencies -XX:-VerifyBeforeExit ]
[2025-07-11T04:18:06.860447139Z] Gathering output for process 1233703
[ELAPSED: 631602 ms]
[logging stdout to /opt/mach5/mesos/work_dir/slaves/d2398cde-9325-49c3-b030-8961a4f0a253-S676640/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/a417ec8a-f693-479e-80a1-10e6405dca59/runs/7abce314-e35e-4768-b85a-941eb75bd2de/testoutput/test-support/jtreg_open_test_hotspot_jtreg_hotspot_aot_classlinking/scratch/0/runtime.cds.appcds.LotsOfSyntheticClasses.java-0000-dump.stdout]
[logging stderr to /opt/mach5/mesos/work_dir/slaves/d2398cde-9325-49c3-b030-8961a4f0a253-S676640/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/a417ec8a-f693-479e-80a1-10e6405dca59/runs/7abce314-e35e-4768-b85a-941eb75bd2de/testoutput/test-support/jtreg_open_test_hotspot_jtreg_hotspot_aot_classlinking/scratch/0/runtime.cds.appcds.LotsOfSyntheticClasses.java-0000-dump.stderr]
[STDERR]

[2025-07-11T04:28:38.277009755Z] Waiting for completion for process 1233703
[2025-07-11T04:28:38.279816527Z] Waiting for completion finished for process 1233703
Command line: [/opt/mach5/mesos/work_dir/jib-master/install/jdk-26+7-598/linux-aarch64-debug.jdk/jdk-26/fastdebug/bin/java -cp /opt/mach5/mesos/work_dir/slaves/d2398cde-9325-49c3-b030-8961a4f0a253-S676640/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/a417ec8a-f693-479e-80a1-10e6405dca59/runs/7abce314-e35e-4768-b85a-941eb75bd2de/testoutput/test-support/jtreg_open_test_hotspot_jtreg_hotspot_aot_classlinking/classes/3/runtime/cds/appcds/LotsOfSyntheticClasses.d:/opt/mach5/mesos/work_dir/jib-master/install/jdk-26+7-598/src.full/open/test/hotspot/jtreg/runtime/cds/appcds:/opt/mach5/mesos/work_dir/slaves/d2398cde-9325-49c3-b030-8961a4f0a253-S676640/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/a417ec8a-f693-479e-80a1-10e6405dca59/runs/7abce314-e35e-4768-b85a-941eb75bd2de/testoutput/test-support/jtreg_open_test_hotspot_jtreg_hotspot_aot_classlinking/classes/3/test/lib:/opt/mach5/mesos/work_dir/slaves/d2398cde-9325-49c3-b030-8961a4f0a253-S676640/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/a417ec8a-f693-479e-80a1-10e6405dca59/runs/7abce314-e35e-4768-b85a-941eb75bd2de/testoutput/test-support/jtreg_open_test_hotspot_jtreg_hotspot_aot_classlinking/classes/3/test/hotspot/jtreg/runtime/cds/appcds:/opt/mach5/mesos/work_dir/jib-master/install/jtreg/7.5.2/1/bundles/jtreg-7.5.2+1.zip/jtreg/lib/jtreg.jar:/opt/mach5/mesos/work_dir/jib-master/install/jtreg/7.5.2/1/bundles/jtreg-7.5.2+1.zip/jtreg/lib/junit-platform-console-standalone-1.11.0.jar:/opt/mach5/mesos/work_dir/jib-master/install/jtreg/7.5.2/1/bundles/jtreg-7.5.2+1.zip/jtreg/lib/testng-7.3.0.jar:/opt/mach5/mesos/work_dir/jib-master/install/jtreg/7.5.2/1/bundles/jtreg-7.5.2+1.zip/jtreg/lib/jcommander-1.82.jar:/opt/mach5/mesos/work_dir/jib-master/install/jtreg/7.5.2/1/bundles/jtreg-7.5.2+1.zip/jtreg/lib/guice-5.1.0.jar -XX:MaxRAMPercentage=6.25 -Dtest.boot.jdk=/opt/mach5/mesos/work_dir/jib-master/install/jdk/24/36/bundles/linux-aarch64/jdk-24_linux-aarch64_bin.tar.gz/jdk-24 -Djava.io.tmpdir=/opt/mach5/mesos/work_dir/slaves/d2398cde-9325-49c3-b030-8961a4f0a253-S676640/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/a417ec8a-f693-479e-80a1-10e6405dca59/runs/7abce314-e35e-4768-b85a-941eb75bd2de/testoutput/test-support/jtreg_open_test_hotspot_jtreg_hotspot_aot_classlinking/tmp -XX:+AOTClassLinking -Xshare:on -showversion -XX:SharedArchiveFile=/opt/mach5/mesos/work_dir/slaves/d2398cde-9325-49c3-b030-8961a4f0a253-S676640/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/a417ec8a-f693-479e-80a1-10e6405dca59/runs/7abce314-e35e-4768-b85a-941eb75bd2de/testoutput/test-support/jtreg_open_test_hotspot_jtreg_hotspot_aot_classlinking/scratch/0/appcds-04h18m05s374.jsa -Dtest.timeout.factor=4.0 -XX:+UnlockDiagnosticVMOptions -XX:VerifyArchivedFields=1 -XX:+IgnoreUnrecognizedVMOptions -XX:-VerifyDependencies -XX:-VerifyBeforeExit -cp /opt/mach5/mesos/work_dir/slaves/d2398cde-9325-49c3-b030-8961a4f0a253-S676640/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/a417ec8a-f693-479e-80a1-10e6405dca59/runs/7abce314-e35e-4768-b85a-941eb75bd2de/testoutput/test-support/jtreg_open_test_hotspot_jtreg_hotspot_aot_classlinking/scratch/0/test.jar Main ]
[2025-07-11T04:28:38.375281591Z] Gathering output for process 1246474
[ELAPSED: 1778279 ms]
[logging stdout to /opt/mach5/mesos/work_dir/slaves/d2398cde-9325-49c3-b030-8961a4f0a253-S676640/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/a417ec8a-f693-479e-80a1-10e6405dca59/runs/7abce314-e35e-4768-b85a-941eb75bd2de/testoutput/test-support/jtreg_open_test_hotspot_jtreg_hotspot_aot_classlinking/scratch/0/runtime.cds.appcds.LotsOfSyntheticClasses.java-0001-exec.stdout]
[logging stderr to /opt/mach5/mesos/work_dir/slaves/d2398cde-9325-49c3-b030-8961a4f0a253-S676640/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/a417ec8a-f693-479e-80a1-10e6405dca59/runs/7abce314-e35e-4768-b85a-941eb75bd2de/testoutput/test-support/jtreg_open_test_hotspot_jtreg_hotspot_aot_classlinking/scratch/0/runtime.cds.appcds.LotsOfSyntheticClasses.java-0001-exec.stderr]
[STDERR]

[2025-07-11T04:58:16.655316130Z] Waiting for completion for process 1246474
[2025-07-11T04:58:16.655798332Z] Waiting for completion finished for process 1246474
----------System.err:(17/830)----------
 stdout: [];
 stderr: []
 exitValue = 134

java.lang.RuntimeException: 'Success' missing from stdout/stderr
at jdk.test.lib.process.OutputAnalyzer.shouldContain(OutputAnalyzer.java:253)
at jdk.test.lib.cds.CDSTestUtils.checkMatches(CDSTestUtils.java:505)
at jdk.test.lib.cds.CDSTestUtils$Result.assertNormalExit(CDSTestUtils.java:205)
at LotsOfSyntheticClasses.main(LotsOfSyntheticClasses.java:141)
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104)
at java.base/java.lang.reflect.Method.invoke(Method.java:565)
at com.sun.javatest.regtest.agent.MainActionHelper$AgentVMRunnable.run(MainActionHelper.java:335)
at java.base/java.lang.Thread.run(Thread.java:1474)

JavaTest Message: Test threw exception: java.lang.RuntimeException
JavaTest Message: shutting down test

result: Error. "driver" action timed out with a timeout of 2000 seconds on agent 7