Create exeption with "longobject.c:998: bad argument to internal function"

[nefelim4ag]

Ubuntu 15.04 targetcli from ubuntu repos
Same error for any block device

/backstores/iblock> create dev=/dev/rbd/rbd/storage name=storage
Generating a wwn serial.
Traceback (most recent call last):
File "/usr/lib/python2.7/dist-packages/configshell/shell.py", line 990, in run_interactive
self._cli_loop()
File "/usr/lib/python2.7/dist-packages/configshell/shell.py", line 820, in _cli_loop
self.run_cmdline(cmdline)
File "/usr/lib/python2.7/dist-packages/configshell/shell.py", line 934, in run_cmdline
self._execute_command(path, command, pparams, kparams)
File "/usr/lib/python2.7/dist-packages/configshell/shell.py", line 909, in _execute_command
result = target.execute_command(command, pparams, kparams)
File "/usr/lib/python2.7/dist-packages/targetcli/ui_node.py", line 103, in execute_command
pparams, kparams)
File "/usr/lib/python2.7/dist-packages/configshell/node.py", line 1416, in execute_command
result = method(_pparams, *_kparams)
File "/usr/lib/python2.7/dist-packages/targetcli/ui_backstore.py", line 394, in ui_command_create
raise exception
SystemError: ../Objects/longobject.c:998: bad argument to internal function

[tramjoe]

Need to install ubuntu and reproduce, bust most likely a python ubuntu-related breakage. Will investigate anyway in case it is something from our side, but seems related to a known bug in python 2.7.9:

https://bugs.python.org/issue23842
https://hg.python.org/cpython/file/default/Objects/longobject.c#l998

What is the version of python that you use, and can you retest with an older or more recent one?