Description of problem:

qdrouterd throws exception on the capsule/satellite server periodically and requires a restart in order to function. 

Sep 29 09:00:29 gbl15219 qdrouterd: *** Error in `/usr/sbin/qdrouterd': double free or corruption (!prev): 0x00007efcac6d9650 ***
Sep 29 09:00:29 gbl15219 qdrouterd: ======= Backtrace: =========
Sep 29 09:00:29 gbl15219 qdrouterd: /lib64/libc.so.6(+0x7d053)[0x7efcbf57b053]
Sep 29 09:00:29 gbl15219 qdrouterd: /lib64/libqpid-proton.so.2(pn_class_decref+0x56)[0x7efcc02c7806]
Sep 29 09:00:29 gbl15219 qdrouterd: /lib64/libqpid-proton.so.2(+0x27580)[0x7efcc02d5580]
Sep 29 09:00:29 gbl15219 qdrouterd: /lib64/libqpid-proton.so.2(pn_class_decref+0x38)[0x7efcc02c77e8]
Sep 29 09:00:29 gbl15219 qdrouterd: /lib64/libqpid-proton.so.2(pn_collector_pop+0x22)[0x7efcc02d5722]
Sep 29 09:00:29 gbl15219 qdrouterd: /lib64/libqpid-dispatch.so.0(+0x16f00)[0x7efcc0514f00]
Sep 29 09:00:29 gbl15219 qdrouterd: /lib64/libqpid-dispatch.so.0(+0x29b9c)[0x7efcc0527b9c]
Sep 29 09:00:29 gbl15219 qdrouterd: /lib64/libqpid-dispatch.so.0(qd_server_run+0xb0)[0x7efcc05287b0]
Sep 29 09:00:29 gbl15219 qdrouterd: /usr/sbin/qdrouterd[0x401cd8]
Sep 29 09:00:29 gbl15219 qdrouterd: /usr/sbin/qdrouterd(main+0x140)[0x401950]
Sep 29 09:00:29 gbl15219 qdrouterd: /lib64/libc.so.6(__libc_start_main+0xf5)[0x7efcbf51fb15]
Sep 29 09:00:29 gbl15219 qdrouterd: /usr/sbin/qdrouterd[0x4019a1]
Sep 29 09:00:29 gbl15219 qdrouterd: ======= Memory map: ========
Sep 29 09:00:29 gbl15219 qdrouterd: 00400000-00403000 r-xp 00000000 fd:00 10740512 /usr/sbin/qdrouterd
Sep 29 09:00:29 gbl15219 qdrouterd: 00602000-00603000 r--p 00002000 fd:00 10740512 /usr/sbin/qdrouterd
Sep 29 09:00:29 gbl15219 qdrouterd: 00603000-00604000 rw-p 00003000 fd:00 10740512 /usr/sbin/qdrouterd
Sep 29 09:00:29 gbl15219 qdrouterd: 02264000-036b6000 rw-p 00000000 00:00 0 [heap]

This then causes disconnects on the client: 

[root@cutekittens~]# tail -f /var/log/messages
Oct 17 10:39:56 cutekittens adclient[7856]: INFO <fd:29 PAMVerifyPassword > audit User 'd3228273' authenticated based on Kerberos exchange to AD
Oct 17 10:39:56 cutekittens adclient[7856]: INFO <fd:30 PAMIsUserAllowedAccess2 > audit User 'd3228273' is authorized
Oct 17 10:39:56 cutekittens sshd[2003]: Accepted keyboard-interactive/pam for 43228273 from 10.199.226.102 port 51189 ssh2
Oct 17 10:40:04 cutekittens goferd: [INFO][worker-0] gofer.messaging.adapter.connect:28 - connecting: proton+amqps://capsulefqdn:5647
Oct 17 10:40:04 cutekittens goferd: [INFO][worker-0] gofer.messaging.adapter.proton.connection:87 - open: URL: amqps://capsulefqdn:5647|SSL: ca: /etc/rhsm/ca/katello-default-ca.pem|key: None|certificate: /etc/pki/consumer/bundle.pem|host-validation: None
Oct 17 10:40:04 cutekittens goferd: [INFO][worker-0] root:490 - connecting to capsulefqdn:5647...
Oct 17 10:40:04 cutekittens goferd: [INFO][worker-0] root:532 - Disconnected
Oct 17 10:40:04 cutekittens goferd: [ERROR][worker-0] gofer.messaging.adapter.connect:33 - connect: proton+amqps://capsulefqdn:5647, failed: Connection amqps://capsulefqdn:5647 disconnected
Oct 17 10:40:04 cutekittens goferd: [INFO][worker-0] gofer.messaging.adapter.connect:35 - retry in 106 seconds
Oct 17 10:40:05 cutekittens dzdo[2049]: INFO dz.dzdo Starting dzdo

This means the customer has to create a cron job to periodically restart the goferd agent

Version-Release number of selected component (if applicable):

6.2.1

How reproducible:

100% reproducible happening on all capsules

Steps to Reproduce:
1. Register machines to capsules, do some usual stuff. 
2. qdrouterd stops working, breaks, needs to be restarted.

Actual results:

qdrouterd is unstable, causes goferd to break. 

Expected results:

qdrouterd +goferd should work and be stable. 

Additional info:

Pulp upstream does not use qdrouterd, so we aren't much help with these bugs.

I'm adding Justin Ross who can advise from the messaging team's perspective.

*** This bug has been marked as a duplicate of bug 1366232 ***