https://issues.apache.org/bugzilla/show_bug.cgi?id=52356
Bug #: 52356
Summary: Prevent potential data races on
"org.apache.catalina.tribes.transport.bio.util.FastQue
ue.size".
Product: Tomcat 7
Version: trunk
Platform: PC
OS/Version: Linux
Status: NEW
Severity: normal
Priority: P2
Component: Catalina
AssignedTo: [email protected]
ReportedBy: [email protected]
Classification: Unclassified
Even though accesses to
"org.apache.catalina.tribes.transport.bio.util.FastQueue.size" are synchronized
inside
"org.apache.catalina.tribes.transport.bio.util.FastQueue.add(ChannelMessage,
Member[], InterceptorPayload)" and
"org.apache.catalina.tribes.transport.bio.util.FastQueue.remove()", the read
access in "org.apache.catalina.tribes.transport.bio.util.FastQueue.getSize()"
is not properly synchronized and thus can lead to a race condition. However,
"org.apache.catalina.tribes.transport.bio.util.FastQueue.getSize()" is not
used, so this bug never manifests. Nevertheless, we suggest that Tomcat
developers either remove
"org.apache.catalina.tribes.transport.bio.util.FastQueue.getSize()" or make it
access the shared field safely.
Field "org.apache.catalina.tribes.transport.bio.util.FastQueue.size" is
declared at
<http://svn.apache.org/repos/asf/!svn/bc/1220560/tomcat/trunk/java/org/apache/catalina/tribes/transport/bio/util/FastQueue.java>.
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