The following test failed in the JDK15 CI:

compiler/runtime/Test7196199.java

Here's a snippet from the log file:

#section:main
----------messages:(4/641)----------
command: main -Xmx128m -Xbatch -XX:+IgnoreUnrecognizedVMOptions -XX:+UnlockDiagnosticVMOptions -XX:-TieredCompilation -XX:+SafepointALot -XX:GuaranteedSafepointInterval=100 -XX:CompileCommand=exclude,compiler.runtime.Test7196199::test compiler.runtime.Test7196199
reason: User specified action: run main/othervm/timeout=400 -Xmx128m -Xbatch -XX:+IgnoreUnrecognizedVMOptions -XX:+UnlockDiagnosticVMOptions -XX:-TieredCompilation -XX:+SafepointALot -XX:GuaranteedSafepointInterval=100 -XX:CompileCommand=exclude,compiler.runtime.Test7196199::test compiler.runtime.Test7196199
Mode: othervm [/othervm specified]
elapsed time (seconds): 20.131
----------configuration:(0/0)----------
----------System.out:(7/128)----------
CompileCommand: exclude compiler/runtime/Test7196199.test
Warmup
Verification
  test_incrc
  test_incrv
  test_addc
  test_addv
----------System.err:(6/211)----------
test_addv: [0] = 29985.0 != 150000.0
test_addv: [1] = 39985.0 != 160000.0
test_addv: [94] = 969970.0 != 1090000.0
test_addv: [95] = 979970.0 != 1100000.0
test_addv: [96] = 989970.0 != 1110000.0
FAILED: 5 errors
----------rerun:(47/5612)*----------

The test task description is:

Run test open/test/hotspot/jtreg/:tier1_compiler_3 with linux-aarch64-debug with -XX:+CreateCoredumpOnCrash -ea -esa -XX:CompileThreshold=100 -XX:+UnlockExperimentalVMOptions -server -XX:-TieredCompilation #tier2-comp

I don't know if any of the above options will
help with reproducibility.