The tracebacks are coming from system "<server>.<domain>.com".
Is seems there is one or more systems using the same jabber id 'osad-d89e8dd1a0@<satellite_server>.<domain>.com/osad' via the same /etc/sysconfig/rhn/osad-auth.conf file and this causes the deadlock condition to occur.
Check the OSAD config file on the system
# cd /etc/sysconfig/rhn/
# ls -al
total 44
drwxr-xr-x. 4 root root 4096 Apr 5 2018 .
drwxr-xr-x. 8 root root 4096 Aug 2 04:43 ..
drwxr-xr-x. 4 root root 4096 Apr 5 2018 allowed-actions
drwxr-xr-x. 2 root root 4096 Apr 5 2018 clientCaps.d
-rw-------. 1 root root 129 Apr 17 2017 osad-auth.conf
-rw-rw-r--. 1 root root 1785 Sep 23 2016 osad.conf
-rw-r--r--. 1 root root 1446 Oct 29 2015 rhncfg-client.conf
-rw-r--r--. 1 root root 10 Apr 17 2017 rhnsd
-rw------- 1 root root 1322 Jun 4 2018 systemid
-rw-------. 1 root root 1320 Apr 17 2017 systemid.save
-rw-------. 1 root root 2035 Jun 4 2018 up2date
#
# ls -al
total 44
drwxr-xr-x. 4 root root 4096 Apr 5 2018 .
drwxr-xr-x. 8 root root 4096 Aug 2 04:43 ..
drwxr-xr-x. 4 root root 4096 Apr 5 2018 allowed-actions
drwxr-xr-x. 2 root root 4096 Apr 5 2018 clientCaps.d
-rw-------. 1 root root 129 Apr 17 2017 osad-auth.conf
-rw-rw-r--. 1 root root 1785 Sep 23 2016 osad.conf
-rw-r--r--. 1 root root 1446 Oct 29 2015 rhncfg-client.conf
-rw-r--r--. 1 root root 10 Apr 17 2017 rhnsd
-rw------- 1 root root 1322 Jun 4 2018 systemid
-rw-------. 1 root root 1320 Apr 17 2017 systemid.save
-rw-------. 1 root root 2035 Jun 4 2018 up2date
#
Always take backup beforing removing from the serevr and check
# cp -r osad-auth.conf /u01/home/<user>
# ll /u01/home/<user>
total 4
-rw------- 1 root root 129 Aug 13 05:55 osad-auth.conf
#
# cp -r osad-auth.conf /u01/home/<user>
# ll /u01/home/<user>
total 4
-rw------- 1 root root 129 Aug 13 05:55 osad-auth.conf
#
Remove the config file on server
# rm osad-auth.conf
rm: remove regular file `osad-auth.conf'? y
#
# rm osad-auth.conf
rm: remove regular file `osad-auth.conf'? y
#
Validate the path on the server
# ll
total 32
drwxr-xr-x. 4 root root 4096 Apr 5 2018 allowed-actions
drwxr-xr-x. 2 root root 4096 Apr 5 2018 clientCaps.d
-rw-rw-r--. 1 root root 1785 Sep 23 2016 osad.conf
-rw-r--r--. 1 root root 1446 Oct 29 2015 rhncfg-client.conf
-rw-r--r--. 1 root root 10 Apr 17 2017 rhnsd
-rw------- 1 root root 1322 Jun 4 2018 systemid
-rw-------. 1 root root 1320 Apr 17 2017 systemid.save
-rw-------. 1 root root 2035 Jun 4 2018 up2date
#
# ll
total 32
drwxr-xr-x. 4 root root 4096 Apr 5 2018 allowed-actions
drwxr-xr-x. 2 root root 4096 Apr 5 2018 clientCaps.d
-rw-rw-r--. 1 root root 1785 Sep 23 2016 osad.conf
-rw-r--r--. 1 root root 1446 Oct 29 2015 rhncfg-client.conf
-rw-r--r--. 1 root root 10 Apr 17 2017 rhnsd
-rw------- 1 root root 1322 Jun 4 2018 systemid
-rw-------. 1 root root 1320 Apr 17 2017 systemid.save
-rw-------. 1 root root 2035 Jun 4 2018 up2date
#
Restart OSAD services in the server
# service osad restart
Shutting down osad: [ OK ]
Starting osad: [ OK ]
## service osad restart
Shutting down osad: [ OK ]
Starting osad: [ OK ]
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