Galkin Alexey created ARTEMIS-4805:
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Summary: Null dereferencing in ScaleDownHandler.java
Key: ARTEMIS-4805
URL: https://issues.apache.org/jira/browse/ARTEMIS-4805
Project: ActiveMQ Artemis
Issue Type: Bug
Reporter: Galkin Alexey
In [line
333|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 *queueCreateSession* is initialized
ClientSession queueCreateSession = sessionFactory.createSession(user, password,
false, true, true, 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 *queueCreateSession* variable could potentially be null
In [line
357|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 *queueCreateSession* is passed to the
function createQueueWithRoutingTypeIfNecessaryAndGetID as the first argument
queueID = createQueueWithRoutingTypeIfNecessaryAndGetID(queueCreateSession,
queue, message.getAddressSimpleString(), message.getRoutingType());
In [line
450|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.createQueue(new QueueConfiguration(...));
Found by Linux Verification Center (portal.linuxtesting.ru) with SVACE.
Author Alexey Galkin.
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