In sun.nio.ch.Net, when localAddress() is called with a null value, the VM crashes.
---
$ java -version
openjdk version "1.8.0_412"
OpenJDK Runtime Environment (Temurin)(build 1.8.0_412-b08)
OpenJDK 64-Bit Server VM (Temurin)(build 25.412-b08, mixed mode)


#
# A fatal error has been detected by the Java Runtime Environment:
#
# SIGSEGV (0xb) at pc=0x00007f700906a1fe, pid=3103, tid=0x00007f701f980700
#
# JRE version: OpenJDK Runtime Environment (8.0_412-b08) (build 1.8.0_412-b08)
# Java VM: OpenJDK 64-Bit Server VM (25.412-b08 mixed mode linux-amd64 compressed oops)
# Problematic frame:
# v ~BufferBlob::jni_fast_GetIntField
#
# Failed to write core dump. Core dumps have been disabled. To enable core dumping, try "ulimit -c unlimited" before starting Java again
#
# An error report file with more information is saved as:
# /home/crane/Desktop/jvm_crash/report/hs_err_pid3103.log
#
# If you would like to submit a bug report, please visit:
# https://github.com/adoptium/adoptium-support/issues
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Aborted (core dumped)
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PoC.java

import sun.nio.ch.Net;
import java.io.FileDescriptor;
import java.io.IOException;

public class PoC {
    public static void main(String[] args) throws IOException {
        FileDescriptor fd = null;
        Net.localAddress(fd);
    }
}