ADDITIONAL SYSTEM INFORMATION :
Tested on multiple Linux OSs, including Ubuntu running inside docker
Affects at least jdk-17, jdk-18 and jdk-19

A DESCRIPTION OF THE PROBLEM :
Setting properties:
"-XX:+UseZGC -Xms$TOOLARGE -Xmx$TOOLARGE"
and starting anything with that runtime crashed the entire host OS, including if this is run inside of a docker container

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
#intentionally set TOOLARGE beyond the memory capacity of the host
export TOOLARGE=40G

echo -en "class HelloZGC {\n public static void main(String[] args) {\n System.out.println(\"Hello, oom\");\n }\n}\n" > zgc.java

$JDK/bin/javac zgc.java
$JDK/bin/java -XX:+UseZGC -Xms$TOOLARGE -Xmx$TOOLARGE HelloZGC

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
Running the same procedure with for instance G1GC will result in the JVM refusing to start which seems like a sane default even if this is caused by an obvious configuration error
ACTUAL -
Entire host OS crashes

---------- BEGIN SOURCE ----------
class HelloZGC {
    public static void main(String[] args) {
        System.out.println("Hello, oom");
    }
}
---------- END SOURCE ----------

FREQUENCY : always