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From Håkan Johansson (JIRA) <j...@apache.org>
Subject [jira] [Created] (QPID-7054) Crash when closing a sender after the connection has been closed (with patch).
Date Tue, 09 Feb 2016 10:09:18 GMT
Håkan Johansson created QPID-7054:
-------------------------------------

             Summary: Crash when closing a sender after the connection has been closed (with
patch).
                 Key: QPID-7054
                 URL: https://issues.apache.org/jira/browse/QPID-7054
             Project: Qpid
          Issue Type: Bug
          Components: C++ Client
    Affects Versions: qpid-cpp-0.34
         Environment: Red Hat Enterprise Linux Server release 6.7 (Santiago)

The broker is ActiveMQ 5.13.0.
The protocol used in AMQP 1.0.

            Reporter: Håkan Johansson


There will be a crash if you close your _Sender_ after the _Connection_ has been closed.

To reproduce, compile and run the attached "crash_test.cc" file.

The test program is very simple. It creates _Connection_, _Session_, and _Sender_ instances,
then closes the connection explicitly followed by closing the sender. The closing of the sender
causes an exception to be thrown as the connection is dead, but that is caught.

The crash happens when the _Session_ object is destructed at the end of the test function.
This causes the _SenderContext_ from the sender to be destructed, which tries to close the
underlying _pn_link_t_ object to be freed, but that object is already deleted. The exception
during _Sender::close_ stopped the proper cleanup to be done.

The _Sender::close_ method calls _ConnectionContext::detach_ to disconnect it from its session.
I have a attached a patch to this jira which stops the _ConnectionContext::detach_ method
from trying to do remote actions if not connected.

The row numbers in this patch assumes that the patch in QPID-7051 is already applied, which
might cause some offset warnings when applying this patch.



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