OpenJDK 21 hotspot jtreg tests stall indefinitely on Ubuntu armhf.
Running tests in fastdebug configuration results in a segmentation fault.
The issue can be reproduced with compiler/c1/TestArrayCopyToFromObject.java

Running test 'jtreg:test/hotspot/jtreg/compiler/c1/TestArrayCopyToFromObject.java'
--------------------------------------------------
TEST: compiler/c1/TestArrayCopyToFromObject.java
TEST JDK: /build/magic/jdk21u/build/linux-arm-server-fastdebug/images/jdk

ACTION: build -- Passed. Build successful
REASON: Named class compiled on demand
TIME: 3.074 seconds
messages:
command: build TestArrayCopyToFromObject
reason: Named class compiled on demand
started: Tue Jan 07 02:26:28 UTC 2025
Test directory:
  compile: TestArrayCopyToFromObject
finished: Tue Jan 07 02:26:31 UTC 2025
elapsed time (seconds): 3.074

ACTION: compile -- Passed. Compilation successful
REASON: .class file out of date or does not exist
TIME: 3.067 seconds
messages:
command: compile /build/magic/jdk21u/test/hotspot/jtreg/compiler/c1/TestArrayCopyToFromObject.java
reason: .class file out of date or does not exist
started: Tue Jan 07 02:26:28 UTC 2025
Mode: agentvm
Agent id: 1
finished: Tue Jan 07 02:26:31 UTC 2025
elapsed time (seconds): 3.067
configuration:
Boot Layer (javac runtime environment)
  class path: /usr/share/jtreg/lib/javatest.jar
              /usr/share/jtreg/lib/jtreg.jar
  patch: java.base /build/magic/jdk21u/build/linux-arm-server-fastdebug/test-support/jtreg_test_hotspot_jtreg_compiler_c1_TestArrayCopyToFromObject_java/patches/java.base

javac compilation environment
  source path: /build/magic/jdk21u/test/hotspot/jtreg/compiler/c1
  class path: /build/magic/jdk21u/test/hotspot/jtreg/compiler/c1
               /build/magic/jdk21u/build/linux-arm-server-fastdebug/test-support/jtreg_test_hotspot_jtreg_compiler_c1_TestArrayCopyToFromObject_java/classes/0/compiler/c1/TestArrayCopyToFromObject.d

rerun:
cd /build/magic/jdk21u/build/linux-arm-server-fastdebug/test-support/jtreg_test_hotspot_jtreg_compiler_c1_TestArrayCopyToFromObject_java/scratch/0 && \
DBUS_SESSION_BUS_ADDRESS=unix:path=/run/user/1000/bus \
HOME=/home/ubuntu \
LANG=C.UTF-8 \
LC_ALL=C \
PATH=/bin:/usr/bin:/usr/sbin \
TEST_IMAGE_DIR=/build/magic/jdk21u/build/linux-arm-server-fastdebug/images/test \
XDG_DATA_DIRS=/usr/local/share:/usr/share:/var/lib/snapd/desktop \
XDG_RUNTIME_DIR=/run/user/1000 \
XDG_SESSION_CLASS=user \
XDG_SESSION_ID=c1 \
XDG_SESSION_TYPE=tty \
_JVM_DWARF_PATH=/build/magic/jdk21u/build/linux-arm-server-fastdebug/images/symbols \
    /build/magic/jdk21u/build/linux-arm-server-fastdebug/images/jdk/bin/javac \
        -J-XX:MaxRAMPercentage=12.5 \
        -J-Dtest.boot.jdk=/usr/lib/jvm/java-21-openjdk-armhf \
        -J-Djava.io.tmpdir=/build/magic/jdk21u/build/linux-arm-server-fastdebug/test-support/jtreg_test_hotspot_jtreg_compiler_c1_TestArrayCopyToFromObject_java/tmp \
        -J-Dtest.vm.opts='-XX:MaxRAMPercentage=12.5 -Dtest.boot.jdk=/usr/lib/jvm/java-21-openjdk-armhf -Djava.io.tmpdir=/build/magic/jdk21u/build/linux-arm-server-fastdebug/test-support/jtreg_test_hotspot_jtreg_compiler_c1_TestArrayCopyToFromObject_java/tmp' \
        -J-Dtest.tool.vm.opts='-J-XX:MaxRAMPercentage=12.5 -J-Dtest.boot.jdk=/usr/lib/jvm/java-21-openjdk-armhf -J-Djava.io.tmpdir=/build/magic/jdk21u/build/linux-arm-server-fastdebug/test-support/jtreg_test_hotspot_jtreg_compiler_c1_TestArrayCopyToFromObject_java/tmp' \
        -J-Dtest.compiler.opts= \
        -J-Dtest.java.opts= \
        -J-Dtest.jdk=/build/magic/jdk21u/build/linux-arm-server-fastdebug/images/jdk \
        -J-Dcompile.jdk=/build/magic/jdk21u/build/linux-arm-server-fastdebug/images/jdk \
        -J-Dtest.timeout.factor=4.0 \
        -J-Dtest.nativepath=/build/magic/jdk21u/build/linux-arm-server-fastdebug/images/test/hotspot/jtreg/native \
        -J-Dtest.root=/build/magic/jdk21u/test/hotspot/jtreg \
        -J-Dtest.name=compiler/c1/TestArrayCopyToFromObject.java \
        -J-Dtest.file=/build/magic/jdk21u/test/hotspot/jtreg/compiler/c1/TestArrayCopyToFromObject.java \
        -J-Dtest.src=/build/magic/jdk21u/test/hotspot/jtreg/compiler/c1 \
        -J-Dtest.src.path=/build/magic/jdk21u/test/hotspot/jtreg/compiler/c1 \
        -J-Dtest.classes=/build/magic/jdk21u/build/linux-arm-server-fastdebug/test-support/jtreg_test_hotspot_jtreg_compiler_c1_TestArrayCopyToFromObject_java/classes/0/compiler/c1/TestArrayCopyToFromObject.d \
        -J-Dtest.class.path=/build/magic/jdk21u/build/linux-arm-server-fastdebug/test-support/jtreg_test_hotspot_jtreg_compiler_c1_TestArrayCopyToFromObject_java/classes/0/compiler/c1/TestArrayCopyToFromObject.d \
        -J-Dtest.class.path.prefix=/build/magic/jdk21u/build/linux-arm-server-fastdebug/test-support/jtreg_test_hotspot_jtreg_compiler_c1_TestArrayCopyToFromObject_java/classes/0/compiler/c1/TestArrayCopyToFromObject.d:/build/magic/jdk21u/test/hotspot/jtreg/compiler/c1 \
        -d /build/magic/jdk21u/build/linux-arm-server-fastdebug/test-support/jtreg_test_hotspot_jtreg_compiler_c1_TestArrayCopyToFromObject_java/classes/0/compiler/c1/TestArrayCopyToFromObject.d \
        -sourcepath /build/magic/jdk21u/test/hotspot/jtreg/compiler/c1 \
        -classpath /build/magic/jdk21u/test/hotspot/jtreg/compiler/c1:/build/magic/jdk21u/build/linux-arm-server-fastdebug/test-support/jtreg_test_hotspot_jtreg_compiler_c1_TestArrayCopyToFromObject_java/classes/0/compiler/c1/TestArrayCopyToFromObject.d /build/magic/jdk21u/test/hotspot/jtreg/compiler/c1/TestArrayCopyToFromObject.java

ACTION: main -- Failed. Unexpected exit from test [exit code: 139]
REASON: User specified action: run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:+TieredCompilation -XX:TieredStopAtLevel=1 -Xcomp -XX:-UseCompressedClassPointers -XX:CompileOnly=TestArrayCopyToFromObject.test TestArrayCopyToFromObject
TIME: 0.411 seconds
messages:
command: main -XX:+IgnoreUnrecognizedVMOptions -XX:+TieredCompilation -XX:TieredStopAtLevel=1 -Xcomp -XX:-UseCompressedClassPointers -XX:CompileOnly=TestArrayCopyToFromObject.test TestArrayCopyToFromObject
reason: User specified action: run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:+TieredCompilation -XX:TieredStopAtLevel=1 -Xcomp -XX:-UseCompressedClassPointers -XX:CompileOnly=TestArrayCopyToFromObject.test TestArrayCopyToFromObject
started: Tue Jan 07 02:26:31 UTC 2025
Mode: othervm [/othervm specified]
finished: Tue Jan 07 02:26:31 UTC 2025
elapsed time (seconds): 0.411
configuration:
STDOUT:
CompileCommand: compileonly TestArrayCopyToFromObject.test bool compileonly = true
TestArrayCopyToFromObject
STDERR:
rerun:
cd /build/magic/jdk21u/build/linux-arm-server-fastdebug/test-support/jtreg_test_hotspot_jtreg_compiler_c1_TestArrayCopyToFromObject_java/scratch/0 && \
DBUS_SESSION_BUS_ADDRESS=unix:path=/run/user/1000/bus \
HOME=/home/ubuntu \
LANG=C.UTF-8 \
LC_ALL=C \
PATH=/bin:/usr/bin:/usr/sbin \
TEST_IMAGE_DIR=/build/magic/jdk21u/build/linux-arm-server-fastdebug/images/test \
XDG_DATA_DIRS=/usr/local/share:/usr/share:/var/lib/snapd/desktop \
XDG_RUNTIME_DIR=/run/user/1000 \
XDG_SESSION_CLASS=user \
XDG_SESSION_ID=c1 \
XDG_SESSION_TYPE=tty \
_JVM_DWARF_PATH=/build/magic/jdk21u/build/linux-arm-server-fastdebug/images/symbols \
CLASSPATH=/build/magic/jdk21u/build/linux-arm-server-fastdebug/test-support/jtreg_test_hotspot_jtreg_compiler_c1_TestArrayCopyToFromObject_java/classes/0/compiler/c1/TestArrayCopyToFromObject.d:/build/magic/jdk21u/test/hotspot/jtreg/compiler/c1:/usr/share/jtreg/lib/javatest.jar:/usr/share/jtreg/lib/jtreg.jar \
    /build/magic/jdk21u/build/linux-arm-server-fastdebug/images/jdk/bin/java \
        -Dtest.vm.opts='-XX:MaxRAMPercentage=12.5 -Dtest.boot.jdk=/usr/lib/jvm/java-21-openjdk-armhf -Djava.io.tmpdir=/build/magic/jdk21u/build/linux-arm-server-fastdebug/test-support/jtreg_test_hotspot_jtreg_compiler_c1_TestArrayCopyToFromObject_java/tmp' \
        -Dtest.tool.vm.opts='-J-XX:MaxRAMPercentage=12.5 -J-Dtest.boot.jdk=/usr/lib/jvm/java-21-openjdk-armhf -J-Djava.io.tmpdir=/build/magic/jdk21u/build/linux-arm-server-fastdebug/test-support/jtreg_test_hotspot_jtreg_compiler_c1_TestArrayCopyToFromObject_java/tmp' \
        -Dtest.compiler.opts= \
        -Dtest.java.opts= \
        -Dtest.jdk=/build/magic/jdk21u/build/linux-arm-server-fastdebug/images/jdk \
        -Dcompile.jdk=/build/magic/jdk21u/build/linux-arm-server-fastdebug/images/jdk \
        -Dtest.timeout.factor=4.0 \
        -Dtest.nativepath=/build/magic/jdk21u/build/linux-arm-server-fastdebug/images/test/hotspot/jtreg/native \
        -Dtest.root=/build/magic/jdk21u/test/hotspot/jtreg \
        -Dtest.name=compiler/c1/TestArrayCopyToFromObject.java \
        -Dtest.file=/build/magic/jdk21u/test/hotspot/jtreg/compiler/c1/TestArrayCopyToFromObject.java \
        -Dtest.src=/build/magic/jdk21u/test/hotspot/jtreg/compiler/c1 \
        -Dtest.src.path=/build/magic/jdk21u/test/hotspot/jtreg/compiler/c1 \
        -Dtest.classes=/build/magic/jdk21u/build/linux-arm-server-fastdebug/test-support/jtreg_test_hotspot_jtreg_compiler_c1_TestArrayCopyToFromObject_java/classes/0/compiler/c1/TestArrayCopyToFromObject.d \
        -Dtest.class.path=/build/magic/jdk21u/build/linux-arm-server-fastdebug/test-support/jtreg_test_hotspot_jtreg_compiler_c1_TestArrayCopyToFromObject_java/classes/0/compiler/c1/TestArrayCopyToFromObject.d \
        -Dtest.class.path.prefix=/build/magic/jdk21u/build/linux-arm-server-fastdebug/test-support/jtreg_test_hotspot_jtreg_compiler_c1_TestArrayCopyToFromObject_java/classes/0/compiler/c1/TestArrayCopyToFromObject.d:/build/magic/jdk21u/test/hotspot/jtreg/compiler/c1 \
        -XX:MaxRAMPercentage=12.5 \
        -Dtest.boot.jdk=/usr/lib/jvm/java-21-openjdk-armhf \
        -Djava.io.tmpdir=/build/magic/jdk21u/build/linux-arm-server-fastdebug/test-support/jtreg_test_hotspot_jtreg_compiler_c1_TestArrayCopyToFromObject_java/tmp \
        -Djava.library.path=/build/magic/jdk21u/build/linux-arm-server-fastdebug/images/test/hotspot/jtreg/native \
        -XX:+IgnoreUnrecognizedVMOptions \
        -XX:+TieredCompilation \
        -XX:TieredStopAtLevel=1 \
        -Xcomp \
        -XX:-UseCompressedClassPointers \
        -XX:CompileOnly=TestArrayCopyToFromObject.test \
        com.sun.javatest.regtest.agent.MainWrapper /build/magic/jdk21u/build/linux-arm-server-fastdebug/test-support/jtreg_test_hotspot_jtreg_compiler_c1_TestArrayCopyToFromObject_java/compiler/c1/TestArrayCopyToFromObject.d/main.0.jta

TEST RESULT: Failed. Unexpected exit from test [exit code: 139]
--------------------------------------------------
Test results: failed: 1
Report written to /build/magic/jdk21u/build/linux-arm-server-fastdebug/test-results/jtreg_test_hotspot_jtreg_compiler_c1_TestArrayCopyToFromObject_java/html/report.html
Results written to /build/magic/jdk21u/build/linux-arm-server-fastdebug/test-support/jtreg_test_hotspot_jtreg_compiler_c1_TestArrayCopyToFromObject_java
Error: Some tests failed or other problems occurred.
Finished running test 'jtreg:test/hotspot/jtreg/compiler/c1/TestArrayCopyToFromObject.java'
Test report is stored in build/linux-arm-server-fastdebug/test-results/jtreg_test_hotspot_jtreg_compiler_c1_TestArrayCopyToFromObject_java

==============================
Test summary
==============================
   TEST TOTAL PASS FAIL ERROR
   jtreg:test/hotspot/jtreg/compiler/c1/TestArrayCopyToFromObject.java
>> 1 0 1 0 <<
==============================
TEST FAILURE