The following test failed in the JDK23 CI:

runtime/Thread/TestAlwaysPreTouchStacks.java

Here's a snippet from the log file:

#section:driver
----------messages:(8/324)----------
command: driver TestAlwaysPreTouchStacks
reason: User specified action: run driver TestAlwaysPreTouchStacks
started: Fri Jan 26 19:06:32 UTC 2024
Mode: agentvm
Agent id: 20
Additional exports to unnamed modules from @modules: java.base/jdk.internal.misc
finished: Fri Jan 26 19:06:33 UTC 2024
elapsed time (seconds): 1.616
----------configuration:(15/1958)----------

<snip>

----------System.out:(5/1950)----------
Command line: [/opt/mach5/mesos/work_dir/jib-master/install/jdk-23+8-500/linux-x64-debug.jdk/jdk-23/fastdebug/bin/java -cp /opt/mach5/mesos/work_dir/slaves/0db9c48f-6638-40d0-9a4b-bd9cc7533eb8-S9726/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/e55e166a-efc3-4d3a-a206-b61e49391ab7/runs/8b72de21-746f-4cc0-92b2-19a67e94af2d/testoutput/test-support/jtreg_open_test_hotspot_jtreg_tier1_runtime/classes/1/runtime/Thread/TestAlwaysPreTouchStacks.d:/opt/mach5/mesos/work_dir/jib-master/install/jdk-23+8-500/src.full/open/test/hotspot/jtreg/runtime/Thread:/opt/mach5/mesos/work_dir/slaves/0db9c48f-6638-40d0-9a4b-bd9cc7533eb8-S9726/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/e55e166a-efc3-4d3a-a206-b61e49391ab7/runs/8b72de21-746f-4cc0-92b2-19a67e94af2d/testoutput/test-support/jtreg_open_test_hotspot_jtreg_tier1_runtime/classes/1/test/lib:/opt/mach5/mesos/work_dir/jib-master/install/jtreg/7.3.1/1/bundles/jtreg-7.3.1+1.zip/jtreg/lib/jtreg.jar:/opt/mach5/mesos/work_dir/jib-master/install/jtreg/7.3.1/1/bundles/jtreg-7.3.1+1.zip/jtreg/lib/junit-platform-console-standalone-1.9.2.jar:/opt/mach5/mesos/work_dir/jib-master/install/jtreg/7.3.1/1/bundles/jtreg-7.3.1+1.zip/jtreg/lib/testng-7.3.0.jar:/opt/mach5/mesos/work_dir/jib-master/install/jtreg/7.3.1/1/bundles/jtreg-7.3.1+1.zip/jtreg/lib/jcommander-1.82.jar:/opt/mach5/mesos/work_dir/jib-master/install/jtreg/7.3.1/1/bundles/jtreg-7.3.1+1.zip/jtreg/lib/guice-5.1.0.jar -XX:+UnlockDiagnosticVMOptions -Xmx100M -XX:+AlwaysPreTouchStacks -XX:NativeMemoryTracking=summary -XX:+PrintNMTStatistics TestAlwaysPreTouchStacks test ]
[2024-01-26T19:06:33.437482360Z] Gathering output for process 22690
[2024-01-26T19:06:33.594196345Z] Waiting for completion for process 22690
[2024-01-26T19:06:33.594710910Z] Waiting for completion finished for process 22690
>>>>> (stack: reserved=147918848, committed=2904064, peak=2904064): 147918848 - 2904064
----------System.err:(128/5337)----------
 stdout: [Alive: 2
Alive: 1
Alive: 0
Alive: 3
Alive: 5
Alive: 4
Alive: 6
Alive: 7
Alive: 8
Alive: 9
Alive: 10
Alive: 11
Alive: 12
Alive: 13
Alive: 14
Alive: 15

Native Memory Tracking:

Total: reserved=1725098922, committed=190925738
       malloc: 25385898 #28837
       mmap: reserved=1699713024, committed=165539840

- Java Heap (reserved=104857600, committed=104857600)
                            (mmap: reserved=104857600, committed=104857600, at peak)
 
- Class (reserved=1073842507, committed=231755)
                            (classes #721)
                            ( instance classes #608, array classes #113)
                            (malloc=100683 #1625) (peak=100827 #1623)
                            (mmap: reserved=1073741824, committed=131072, at peak)
                            ( Metadata: )
                            ( reserved=67108864, committed=327680)
                            ( used=224352)
                            ( waste=103328 =31.53%)
                            ( Class space:)
                            ( reserved=1073741824, committed=131072)
                            ( used=15688)
                            ( waste=115384 =88.03%)
 
- Thread (reserved=148029184, committed=3014400)
                            (threads #29)
                            (stack: reserved=147918848, committed=2904064, peak=2904064)
                            (malloc=72704 #203) (peak=81232 #207)
                            (arena=37632 #64) (peak=179336 #44)
 
- Code (reserved=254048944, committed=8145584)
                            (malloc=416432 #12771) (peak=416512 #12775)
                            (mmap: reserved=253632512, committed=7729152, at peak)
                            (arena=0 #0) (peak=984 #1)
 
- GC (reserved=57140362, committed=57140362)
                            (malloc=21509258 #831) (at peak)
                            (mmap: reserved=35631104, committed=35631104, at peak)
 
- GCCardSet (reserved=23432, committed=23432)
                            (malloc=23432 #303) (at peak)
 
- Compiler (reserved=204104, committed=204104)
                            (malloc=3800 #32) (peak=3904 #32)
                            (arena=200304 #4) (peak=871952 #13)
 
- Internal (reserved=502664, committed=502664)
                            (malloc=465800 #10531) (peak=466369 #10543)
                            (mmap: reserved=36864, committed=36864, at peak)
 
- Symbol (reserved=1163808, committed=1163808)
                            (malloc=795168 #167) (at peak)
                            (arena=368640 #1) (at peak)
 
- Native Memory Tracking (reserved=470832, committed=470832)
                            (malloc=9440 #91) (peak=9952 #95)
                            (tracking overhead=461392)
 
- Shared class space (reserved=16777216, committed=13914112, readonly=0)
                            (mmap: reserved=16777216, committed=13914112, peak=14180352)
 
- Arena Chunk (reserved=699040, committed=699040)
                            (malloc=699040 #96) (peak=1393880 #98)
 
- Tracing (reserved=345, committed=345)
                            (malloc=345 #9) (at peak)
 
- Statistics (reserved=128, committed=128)
                            (malloc=128 #2) (at peak)
 
- Arguments (reserved=212, committed=212)
                            (malloc=212 #5) (at peak)
 
- Module (reserved=66568, committed=66568)
                            (malloc=66568 #1232) (at peak)
 
- Safepoint (reserved=8192, committed=8192)
                            (mmap: reserved=8192, committed=8192, at peak)
 
- Synchronization (reserved=124000, committed=124000)
                            (malloc=124000 #910) (at peak)
 
- Serviceability (reserved=17240, committed=17240)
                            (malloc=17240 #10) (peak=17576 #14)
 
- Metaspace (reserved=67121424, committed=340240)
                            (malloc=12560 #9) (at peak)
                            (mmap: reserved=67108864, committed=327680, at peak)
 
- String Deduplication (reserved=704, committed=704)
                            (malloc=704 #8) (at peak)
 
- Object Monitors (reserved=416, committed=416)
                            (malloc=416 #2) (at peak)
 
- Unknown (reserved=0, committed=0)
                            (mmap: reserved=0, committed=0, peak=20480)
 
];
 stderr: []
 exitValue = 0

java.lang.RuntimeException: Expected a higher ratio between stack committed and reserved.
at TestAlwaysPreTouchStacks.main(TestAlwaysPreTouchStacks.java:135)
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
at java.base/java.lang.reflect.Method.invoke(Method.java:580)
at com.sun.javatest.regtest.agent.MainActionHelper$AgentVMRunnable.run(MainActionHelper.java:333)
at java.base/java.lang.Thread.run(Thread.java:1575)

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

result: Failed. Execution failed: `main' threw exception: java.lang.RuntimeException: Expected a higher ratio between stack committed and reserved.