https://bz.apache.org/bugzilla/show_bug.cgi?id=58436
Bug ID: 58436
Summary: Data Race in class
org/apache/juli/ClassLoaderLogManager
Product: Tomcat 8
Version: 8.0.26
Hardware: PC
Status: NEW
Severity: minor
Priority: P2
Component: Util
Assignee: dev@tomcat.apache.org
Reporter: krieger.tho...@gmx.de
Using http://vmlens.com to find data races I found the following data race:
In ClassLoaderLogManager the method addLogger access the classLoaderLoggers
hashmap synchronized but the method shutdown does not use any synchronization.
Here are example stacktraces:
localhost-startStop-1 (16)
java/util/concurrent/ThreadPoolExecutor$Worker.run
java/util/concurrent/ThreadPoolExecutor.runWorker
java/util/concurrent/FutureTask.run
java/util/concurrent/Executors$RunnableAdapter.call
org/apache/catalina/startup/HostConfig$DeployWar.run
org/apache/catalina/startup/HostConfig.deployWAR
org/apache/catalina/core/StandardHost.addChild
org/apache/catalina/core/ContainerBase.addChild
org/apache/catalina/core/ContainerBase.addChildInternal
org/apache/catalina/util/LifecycleBase.start
org/apache/catalina/core/StandardContext.startInternal
org/apache/catalina/core/ContainerBase.getLogger
org/apache/juli/logging/LogFactory.getLog
org/apache/juli/logging/LogFactory.getInstance
org/apache/juli/logging/DirectJDKLog.getInstance
org/apache/juli/logging/DirectJDKLog.<init>
java/util/logging/Logger.getLogger
java/util/logging/Logger.demandLogger
java/util/logging/LogManager.demandLogger
org/apache/juli/ClassLoaderLogManager.getLogger
org/apache/juli/ClassLoaderLogManager.getClassLoaderInfo
org/apache/juli/ClassLoaderLogManager$2.run
org/apache/juli/ClassLoaderLogManager$2.run
org/apache/juli/ClassLoaderLogManager.readConfiguration
java/util/WeakHashMap.put
Thread-1 (12)
java/util/concurrent/ThreadPoolExecutor$Worker.run
org/apache/juli/ClassLoaderLogManager$Cleaner.run
org/apache/juli/ClassLoaderLogManager.shutdown
java/util/WeakHashMap$HashIterator.nextEntry
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