The following test timed out in the Valhalla CI:

serviceability/jvmti/vthread/SelfSuspendDisablerTest/SelfSuspendDisablerTest.java#default

Here's a log file snippet:

#section:script_messages
----------messages:(12/1107)*----------
JDK under test: c:\\ade\\mesos\\work_dir\\jib-master\\install\\jdk-27-valhalla+1-39\\windows-x64-debug.jdk\\jdk-27\\fastdebug
[0.016s][warning][aot] Unable to use AOT cache.
[ ] The saved state of UseCompressedOops and UseCompressedClassPointers is different from runtime, CDS will be disabled.
[0.016s][error ][aot] An error has occurred while processing the AOT cache. Run with -Xlog:aot for details.
[0.016s][error ][aot] Loading static archive failed.
[0.016s][error ][aot] Unable to map shared spaces
java version "27-valhalla" 2026-09-15
Java(TM) SE Runtime Environment (fastdebug build 27-valhalla+1-39)
Java HotSpot(TM) 64-Bit Server VM (fastdebug build 27-valhalla+1-39, mixed mode)
Library /test/lib; kind: packages
   source directory: C:\\ade\\mesos\\work_dir\\jib-master\\install\\jdk-27-valhalla+1-39\\src.full\\open\\test\\lib
   class directory: C:\\sb\\prod\\1768442696\\testoutput\\test-support\\jtreg_open_test_hotspot_jtreg_tier1_serviceability\\classes\\0\\serviceability\\jvmti\\vthread\\SelfSuspendDisablerTest\\SelfSuspendDisablerTest_default.d\\test\\lib

<snip>

#section:main
----------messages:(11/518)----------
command: main -agentlib:SelfSuspendDisablerTest SelfSuspendDisablerTest
reason: User specified action: run main/othervm/native -agentlib:SelfSuspendDisablerTest SelfSuspendDisablerTest
started: Thu Jan 15 02:12:22.800 UTC 2026
Mode: othervm [/othervm specified]
Process id: 68584
Timeout information:
[02:20:22.815] starting timeout handler action(s)
[02:25:16.500] timeout handler action(s) completed
--- Timeout information end.
finished: Thu Jan 15 02:25:16.505 UTC 2026
elapsed time (seconds): 773.705
----------configuration:(0/0)----------
----------System.out:(12/561)----------
Agent init started
Agent init finished
Expected platform thread state: 000000 got: 000000
Expected virtual thread state: 000000 got: 000000
Expected virtual thread state: 000000 got: 000000
Expected virtual thread state: 000005 got: 000005
Expected virtual thread state: 000005 got: 000005
Expected platform thread state: 000005 got: 000005
Expected platform thread state: 100005 got: 100005
Expected virtual thread state: 100005 got: 100005
Expected virtual thread state: 100005 got: 100005
[02:20:22.813] Timeout signalled after 480 seconds
----------System.err:(5/567)----------
WARNING: A restricted method in java.lang.System has been called
WARNING: java.lang.System::loadLibrary has been called by SelfSuspendDisablerTest in an unnamed module (file:/C:/sb/prod/1768442696/testoutput/test-support/jtreg_open_test_hotspot_jtreg_tier1_serviceability/classes/0/serviceability/jvmti/vthread/SelfSuspendDisablerTest/SelfSuspendDisablerTest_default.d/)
WARNING: Use --enable-native-access=ALL-UNNAMED to avoid a warning for callers in this module
WARNING: Restricted methods will be blocked in a future release unless native access is enabled

----------rerun:(47/7545)*----------

Although this is a JVM/TI vthread test, I'm starting this issue off in
hotspot/runtime for initial triage because of the AOT errors and
wanring that occurred in the log file before the test was even compiled:

[0.016s][warning][aot] Unable to use AOT cache.
[ ] The saved state of UseCompressedOops and UseCompressedClassPointers is different from runtime, CDS will be disabled.
[0.016s][error ][aot] An error has occurred while processing the AOT cache. Run with -Xlog:aot for details.
[0.016s][error ][aot] Loading static archive failed.
[0.016s][error ][aot] Unable to map shared spaces