ADDITIONAL SYSTEM INFORMATION :
$ uname -a
Linux ip-172-31-5-194.ec2.internal 4.14.62-70.117.amzn2.x86_64 #1 SMP Fri Aug 10 20:14:53 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux

$ rpm -q glibc
glibc-2.26-28.amzn2.0.1.x86_64

$ getconf GNU_LIBPTHREAD_VERSION
NPTL 2.26

$ cat /etc/os-release
NAME="Amazon Linux"
VERSION="2"
ID="amzn"
ID_LIKE="centos rhel fedora"
VERSION_ID="2"
PRETTY_NAME="Amazon Linux 2"
ANSI_COLOR="0;33"
CPE_NAME="cpe:2.3:o:amazon:amazon_linux:2"
HOME_URL="https://amazonlinux.com/"

A DESCRIPTION OF THE PROBLEM :
I ran into this deadlock when running GSSManager.getInstance() and InetAddress.getLocalHost() in parallel. From a thread dump I found that GSSManager.getInstance() is loading SunNativeProvider and it gets stuck during class loading trying to load "j2gss". See here: http://hg.openjdk.java.net/jdk8/jdk8/jdk/file/687fd7c7986d/src/share/classes/sun/security/jgss/wrapper/SunNativeProvider.java#l75 . InetAddress loads "net" at class load: http://hg.openjdk.java.net/jdk8/jdk8/jdk/file/687fd7c7986d/src/share/classes/java/net/InetAddress.java#l273

Loading these two libraries in parallel seems to cause the deadlock.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Run attached code.
$ javac -d bin -sourcepath src src/com/test/BugTest.java
$ java -cp bin com.test.BugTest

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
The process completes.
ACTUAL -
The process hangs.

---------- BEGIN SOURCE ----------
package com.test;

import java.net.InetAddress;

public class BugTest {
    public static void main(String[] args) throws InterruptedException {
        Thread load_j2gss = new Thread(() -> System.loadLibrary("j2gss"));
        Thread load_net = new Thread(() -> getHostname());

        load_j2gss.start();
        load_net.start();

        Thread.sleep(30000);

        if (load_j2gss.isAlive() || load_net.isAlive()) {
            System.out.println("Hung!!!!");
        }

        System.out.println("Done");
    }

    private static void getHostname() {
        try {
            InetAddress.getLocalHost();
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }
}
---------- END SOURCE ----------

CUSTOMER SUBMITTED WORKAROUND :
Load libraries sequentially.

FREQUENCY : often