[SLING-9802] Launcher Classloader is not synchronizing loadClass correctly

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: Feature Model Launcher 1.1.6
• Fix Version/s: Feature Model Launcher 1.1.8
• Component/s: Feature Model
• Assignee: Karl Pauls
• Reporter: Karl Pauls
• Created: 08/Oct/20 08:43
• Updated: 21/Oct/20 21:01
• Resolved: 08/Oct/20 09:12

Description

The default LauncherClassloader is not synchronizing its loadClass method correctly. As it just delegates to the findClass of the URLClassloader it extends, it needs to at a minimum lock on the classname it is trying to load - otherwise, it is possible that it will catch a LinkageError if the same class load is happening concurrently.