Galkin Alexey created ARTEMIS-4804:
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Summary: Null dereferencing in ScaleDownHandler.java
Key: ARTEMIS-4804
URL: https://issues.apache.org/jira/browse/ARTEMIS-4804
Project: ActiveMQ Artemis
Issue Type: Bug
Reporter: Galkin Alexey
In [line
332|https://github.com/apache/activemq-artemis/blob/main/artemis-server/src/main/java/org/apache/activemq/artemis/core/server/impl/ScaleDownHandler.java]
in file ScaleDownHandler.java variable *session* is initialized
ClientSession session = sessionFactory.createSession(user, password, true,
false, false, false, 0);
In [line 851|
https://github.com/apache/activemq-artemis/blob/main/artemis-core-client/src/main/java/org/apache/activemq/artemis/core/client/impl/ClientSessionFactoryImpl.java]
in ClientSessionFactoryImp.java, the code synchronizes with the sessions
collection and checks whether the current session is closed or whether the
client protocol manager is down. If the closed session or inactive client
protocol manager condition is met, the session is closed and null is returned
if (closed || !clientProtocolManager.isAlive()) \{
session.close();
return null;
}
The *session* variable could potentially be null
In [line
339|https://github.com/apache/activemq-artemis/blob/main/artemis-server/src/main/java/org/apache/activemq/artemis/core/server/impl/ScaleDownHandler.java]
in file ScaleDownHandler.java potential null dereference occurs
session.start(xid, XAResource.TMNOFLAGS);
Found by Linux Verification Center (portal.linuxtesting.ru) with SVACE.
Author Alexey Galkin.
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