Bug 8028627

[Stefan Liebig]

Hi,

I would like to add a comment to an existing bug:
- http://bugs.java.com/bugdatabase/view_bug.do?bug_id=8028627
- https://bugs.openjdk.java.net/browse/JDK-8028627

The problem described in that bug seems that it has been discovered by statically code analysis.
However, it seems that we have this problem in production code. A thread dump shows that two threads are "looping":

Java HotSpot(TM) Client VM (24.45-b08 mixed mode)

"pool-2-thread-2" prio=6 tid=0x40537c00 nid=0xb80 runnable [0x4298e000]
   java.lang.Thread.State: RUNNABLE
        at java.util.WeakHashMap.get(WeakHashMap.java:471)
        at javax.crypto.JceSecurity.getCodeBase(JceSecurity.java:222)
        at javax.crypto.JceSecurityManager.getCryptoPermission(JceSecurityManager.java:107)
        at javax.crypto.Cipher.getConfiguredPermission(Cipher.java:2503)
        at javax.crypto.Cipher.initCryptoPermission(Cipher.java:685)
        at javax.crypto.Cipher.chooseProvider(Cipher.java:848)
        - locked <0x16005f98> (a java.lang.Object)
        at javax.crypto.Cipher.init(Cipher.java:1213)
        at javax.crypto.Cipher.init(Cipher.java:1153)
        at org.hsqldb.persist.Crypto.<init>(Unknown Source)
        at org.hsqldb.persist.Logger.setVariables(Unknown Source)
        at org.hsqldb.persist.Logger.openPersistence(Unknown Source)
        at org.hsqldb.Database.reopen(Unknown Source)
        at org.hsqldb.Database.open(Unknown Source)
        - locked <0x15e51a60> (a org.hsqldb.Database)
        at org.hsqldb.DatabaseManager.getDatabase(Unknown Source)
        - locked <0x15e51a60> (a org.hsqldb.Database)
        at org.hsqldb.DatabaseManager.newSession(Unknown Source)
        at org.hsqldb.jdbc.JDBCConnection.<init>(Unknown Source) ...

"pool-2-thread-1" prio=6 tid=0x40537400 nid=0x18f4 runnable [0x412fe000]
   java.lang.Thread.State: RUNNABLE
        at java.util.WeakHashMap.get(WeakHashMap.java:471)
        at javax.crypto.JceSecurity.getCodeBase(JceSecurity.java:222)
        at javax.crypto.JceSecurityManager.getCryptoPermission(JceSecurityManager.java:107)
        at javax.crypto.Cipher.getConfiguredPermission(Cipher.java:2503)
        at javax.crypto.Cipher.initCryptoPermission(Cipher.java:685)
        at javax.crypto.Cipher.chooseProvider(Cipher.java:848)
        - locked <0x16006128> (a java.lang.Object)
        at javax.crypto.Cipher.init(Cipher.java:1213)
        at javax.crypto.Cipher.init(Cipher.java:1153)
        at org.hsqldb.persist.Crypto.<init>(Unknown Source)
        at org.hsqldb.persist.Logger.setVariables(Unknown Source)
        at org.hsqldb.persist.Logger.openPersistence(Unknown Source)
        at org.hsqldb.Database.reopen(Unknown Source)
        at org.hsqldb.Database.open(Unknown Source)
        - locked <0x15e5a718> (a org.hsqldb.Database)
        at org.hsqldb.DatabaseManager.getDatabase(Unknown Source)
        - locked <0x15e5a718> (a org.hsqldb.Database)
        at org.hsqldb.DatabaseManager.newSession(Unknown Source)
        at org.hsqldb.jdbc.JDBCConnection.<init>(Unknown Source)
        at org.hsqldb.jdbc.JDBCDriver.getConnection(Unknown Source)
        at org.hsqldb.jdbc.JDBCDriver.connect(Unknown Source) ...

We have two database instances running parallel.

Tschüß,
Stefan
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