The following tests timed out in the JDK17 CI:

java/lang/instrument/PremainClass/ZeroArgPremainAgent.java
java/lang/instrument/PremainClass/NoPremainAgent.java
java/lang/instrument/PremainClass/NonPublicPremainAgent.java
java/lang/instrument/PremainClass/InheritAgent1100.java
java/lang/instrument/PremainClass/InheritAgent1000.java
java/lang/instrument/PremainClass/InheritAgent0100.java

Here's a snippet from the ZeroArgPremainAgent.java log file:

#section:main
----------messages:(7/472)----------
command: main -XX:-CreateCoredumpOnCrash jdk.java.lang.instrument.NegativeAgentRunner ZeroArgPremainAgent NoSuchMethodException
reason: User specified action: run main/othervm -XX:-CreateCoredumpOnCrash jdk.java.lang.instrument.NegativeAgentRunner ZeroArgPremainAgent NoSuchMethodException
Mode: othervm [/othervm specified]
Additional options from @modules: --add-modules java.instrument
Timeout information:
--- Timeout information end.
elapsed time (seconds): 972.254
----------configuration:(3/43)----------
Boot Layer
  add modules: java.instrument

----------System.out:(3/1581)----------
Command line: [/mesos/work_dir/jib-master/install/jdk-17+7-427/macosx-x64-debug.jdk/jdk-17/fastdebug/bin/java -cp /mesos/work_dir/slaves/983c483a-6907-44e0-ad29-98c7183575e2-S30598/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/3784c51c-82e1-4f70-9dc8-7fbaf098e75f/runs/54c7f68e-0340-4a33-95aa-f617e97207e0/testoutput/test-support/jtreg_open_test_jdk_jdk_svc/classes/0/java/lang/instrument/PremainClass/ZeroArgPremainAgent.d:/mesos/work_dir/jib-master/install/jdk-17+7-427/src.full/open/test/jdk/java/lang/instrument/PremainClass:/mesos/work_dir/slaves/983c483a-6907-44e0-ad29-98c7183575e2-S30598/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/3784c51c-82e1-4f70-9dc8-7fbaf098e75f/runs/54c7f68e-0340-4a33-95aa-f617e97207e0/testoutput/test-support/jtreg_open_test_jdk_jdk_svc/classes/0/test:/mesos/work_dir/jib-master/install/jdk-17+7-427/src.full/open/test:/mesos/work_dir/slaves/983c483a-6907-44e0-ad29-98c7183575e2-S30598/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/3784c51c-82e1-4f70-9dc8-7fbaf098e75f/runs/54c7f68e-0340-4a33-95aa-f617e97207e0/testoutput/test-support/jtreg_open_test_jdk_jdk_svc/classes/0/test/lib:/mesos/work_dir/jib-master/install/jdk-17+7-427/src.full/open/test/lib:/mesos/work_dir/jib-master/install/jtreg/5.1/b01/bundles/jtreg_bin-5.1.zip/jtreg/lib/javatest.jar:/mesos/work_dir/jib-master/install/jtreg/5.1/b01/bundles/jtreg_bin-5.1.zip/jtreg/lib/jtreg.jar -javaagent:ZeroArgPremainAgent.jar ZeroArgPremainAgent ]
[2021-01-26T19:32:58.791197Z] Gathering output for process 77559
Timeout refired 480 times
----------System.err:(0/0)----------
----------rerun:(42/7763)*----------

<snip>

result: Error. Program `/mesos/work_dir/jib-master/install/jdk-17+7-427/macosx-x64-debug.jdk/jdk-17/fastdebug/bin/java' timed out (timeout set to 480000ms, elapsed time including timeout handling was 972245ms).