JBAS014612: Operation ("clean-obsolete-content") failed ... StringIndexOutOfBoundsException: String index out of range in JBoss EAP 6.4

Issue

• After updating to EAP 6.4.0, I'm seeing oddities in the log during JBAS014612: Operation ("clean-obsolete-content") process. It appears to be trying to process OSX's DS_Store files.

ERROR [org.jboss.as.controller.management-operation] (ServerService Thread Pool -- 65) JBAS014612: Operation ("clean-obsolete-content") failed - address: ([]): java.lang.StringIndexOutOfBoundsException: String index out of range: 11
    at java.lang.String.charAt(String.java:658) [rt.jar:1.8.0_60]
    at org.jboss.as.repository.HashUtil.hexStringToByteArray(HashUtil.java:62)
    at org.jboss.as.repository.ContentReference.getHash(ContentReference.java:66)
    at org.jboss.as.repository.ContentRepository$Factory$ContentRepositoryImpl.removeContent(ContentRepository.java:368)
    at org.jboss.as.repository.ContentRepository$Factory$ContentRepositoryImpl.markAsObsolete(ContentRepository.java:424)
    at org.jboss.as.repository.ContentRepository$Factory$ContentRepositoryImpl.cleanObsoleteContent(ContentRepository.java:400)
    at org.jboss.as.server.operations.CleanObsoleteContentHandler.execute(CleanObsoleteContentHandler.java:75)
    at org.jboss.as.controller.AbstractOperationContext.executeStep(AbstractOperationContext.java:702) [jboss-as-controller-7.5.5.Final-redhat-3.jar:7.5.5.Final-redhat-3]
    at org.jboss.as.controller.AbstractOperationContext.doCompleteStep(AbstractOperationContext.java:537) [jboss-as-controller-7.5.5.Final-redhat-3.jar:7.5.5.Final-redhat-3]
    at org.jboss.as.controller.AbstractOperationContext.completeStepInternal(AbstractOperationContext.java:338) [jboss-as-controller-7.5.5.Final-redhat-3.jar:7.5.5.Final-redhat-3]
    at org.jboss.as.controller.AbstractOperationContext.executeOperation(AbstractOperationContext.java:314) [jboss-as-controller-7.5.5.Final-redhat-3.jar:7.5.5.Final-redhat-3]
    at org.jboss.as.controller.OperationContextImpl.executeOperation(OperationContextImpl.java:1144) [jboss-as-controller-7.5.5.Final-redhat-3.jar:7.5.5.Final-redhat-3]
    at org.jboss.as.controller.ModelControllerImpl.internalExecute(ModelControllerImpl.java:331) [jboss-as-controller-7.5.5.Final-redhat-3.jar:7.5.5.Final-redhat-3]
    at org.jboss.as.controller.ModelControllerImpl.execute(ModelControllerImpl.java:188) [jboss-as-controller-7.5.5.Final-redhat-3.jar:7.5.5.Final-redhat-3]
    at org.jboss.as.controller.ModelControllerImpl$3.execute(ModelControllerImpl.java:563) [jboss-as-controller-7.5.5.Final-redhat-3.jar:7.5.5.Final-redhat-3]
    at org.jboss.as.controller.ModelControllerImpl$3.execute(ModelControllerImpl.java:553) [jboss-as-controller-7.5.5.Final-redhat-3.jar:7.5.5.Final-redhat-3]
    at org.jboss.as.server.deployment.ContentRepositoryCleaner.cleanObsoleteContent(ContentRepositoryCleaner.java:132)
    at org.jboss.as.server.deployment.ContentRepositoryCleaner$ContentRepositoryCleanerTask.run(ContentRepositoryCleaner.java:67)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [rt.jar:1.8.0_60]
    at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) [rt.jar:1.8.0_60]
    at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) [rt.jar:1.8.0_60]
    at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) [rt.jar:1.8.0_60]
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [rt.jar:1.8.0_60]
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [rt.jar:1.8.0_60]
    at java.lang.Thread.run(Thread.java:745) [rt.jar:1.8.0_60]
    at org.jboss.threads.JBossThread.run(JBossThread.java:122) [jboss-threads-2.1.2.Final-redhat-1.jar:2.1.2.Final-redhat-1]