Potential race condition on deployment of EAR when Class-Path manifest entry is in use -------------------------------------------------------------------------------------- Key: WFCORE-3948 URL: https://issues.jboss.org/browse/WFCORE-3948 Project: WildFly Core Issue Type: Bug Components: Server Reporter: Stuart Douglas Priority: Major Attachments#ADDITIONAL_MODULES is attached to the top level DU, but modified by sub deployments in ManifestClassPathProcessor#createAdditionalModule without any sort of synchronisation. This can result in ConcurrentModificationException when the list is read/written to by other sub deployments at the same time.