Description of problem:

This issue was discovered during testing of BZ682815, please see Bug 682815 for more details. 

A core dump in the testagent client can be seen when running the reproducer.

cluster_tests.LongTests.test_management ................................. fail
Error during test:
  Traceback (most recent call last):
    File "./qpid-python-test", line 311, in run
      phase()
    File "/root/pematous/bz682815/run_cluster_tests2/cluster_tests.py", line
834, in test_management
      c.stop()
    File "/root/pematous/bz682815/run_cluster_tests2/cluster_tests.py", line
777, in stop
      StoppableThread.stop(self)
    File "/root/pematous/bz682815/run_cluster_tests2/brokertest.py", line 565,
in stop
      if self.error: raise self.error
  RethrownException: Error in ClientLoop.run
  Traceback (most recent call last):
    File "/root/pematous/bz682815/run_cluster_tests2/cluster_tests.py", line
760, in run
      self.process.unexpected(
    File "/root/pematous/bz682815/run_cluster_tests2/brokertest.py", line 194,
in unexpected
      raise BadProcessStatus("%s %s%s" % (self.pname, msg, err))
  BadProcessStatus: testagent-31028 client of cluster0-6 exit code -11
Error during teardown:
  Traceback (most recent call last):
    File "./qpid-python-test", line 311, in run
      phase()
    File "/root/pematous/bz682815/run_cluster_tests2/brokertest.py", line 506,
in tearDown
      if err: raise Exception("Unexpected process status:\n    "+"\n   
".join(err))
  Exception: Unexpected process status:
      Wait failed qpid-tool-31737: [Errno 10] No child processes
      Wait failed qpid-perftest-31738: [Errno 10] No child processes
      Wait failed qpid-queue-stats-31739: [Errno 10] No child processes
      Wait failed testagent-31742: [Errno 10] No child processes
      Wait failed qpid-txtest-31740: [Errno 10] No child processes
      Wait failed qpid-perftest-31774: [Errno 10] No child processes

Version-Release number of selected component (if applicable):
qpid-cpp-mrg-0.10-8

How reproducible:
Unknown - please see Bug 682815 for details

Steps to Reproduce:
Please follow the 'Steps to Reproduce' in Bug 682815 to reproduce this issue
  
Actual results:
Core dump in the testagent client

Expected results:
Test passes repeatedly.

Additional info:

test log+data can be found:
mrg-qe-01.lab.eng.brq.redhat.com:/root/pematous/bz682815_data