FULL PRODUCT VERSION :
java version "1.7.0_11"

ADDITIONAL OS VERSION INFORMATION :
windows 7 32bit
Linux 2.6.32-358.18.1.el6.x86_64

A DESCRIPTION OF THE PROBLEM :
KeyTab.class will parse the keytab file and get KeyTabEntry info:
    private void load(KeyTabInputStream kis)
        throws IOException, RealmException {
        .............
        .............
        while (kis.available() > 0) {
            entryLength = kis.readEntryLength();
            entry = kis.readEntry(entryLength, kt_vno);
            if (DEBUG) {
                System.out.println(">>> KeyTab: load() entry length: " +
                        entryLength + "; type: " +
                        (entry != null? entry.keyType : 0));
            }
            if (entry != null)
                entries.addElement(entry);
        }
    }
In some scenarios kis.available() will always return positive number(Integer.MAX_VALUE)，never exit the while loop.
consider this scenarios as folows:
1. load corrupt keytab file
2. after read(), reached the end of file
3. call skip()
4. kis.available() will always return Integer.MAX_VALUE


REPRODUCIBILITY :
This bug can be reproduced always.