I see this error too on Groovy, after installing Ubuntu studio and
trying to launch studio-controls.
➜ ~ studio-controls
install path: /usr
Traceback (most recent call last):
File "/usr/bin/studio-controls", line 1425, in <module>
us = StudioControls()
File "/usr/bin/studio-controls", line 431, in __init__
jack.set_error_function(callback=self.jack_error)
File "/usr/lib/python3/dist-packages/jack.py", line 2974, in
set_error_function
_set_error_or_info_function(callback, _lib.jack_set_error_function)
File "/usr/lib/python3/dist-packages/jack.py", line 3013, in
_set_error_or_info_function
def callback_wrapper(msg):
SystemError: ffi_prep_closure(): bad user_data (it seems that the version of
the libffi library seen at runtime is different from the 'ffi.h' file seen at
compile-time)
➜ ~
--
You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to libffi in Ubuntu.
https://bugs.launchpad.net/bugs/1912535
Title:
[SRU] python-cffi and libffi in Groovy need a no-change rebuild
Status in libffi package in Ubuntu:
Fix Released
Status in python-cffi package in Ubuntu:
Fix Released
Status in libffi source package in Groovy:
Incomplete
Status in python-cffi source package in Groovy:
Incomplete
Status in libffi source package in Hirsute:
Fix Released
Status in python-cffi source package in Hirsute:
Fix Released
Bug description:
[Impact]
* Users of studio-controls have been reporting bugs against studio-
controls upstream on Github. For reference, see
https://github.com/ovenwerks/studio-controls/issues/43
* Per the bug report, the following error is being thrown:
SystemError: ffi_prep_closure(): bad user_data (it seems that the
version of the libffi library seen at runtime is different from the
'ffi.h' file seen at compile-time)
* Based on this error, and based on the build time of python-cffi and
libffi in relation to cffi, it appears as though python-cffi and
libffi were built on an older version of cffi. This explains the
error.
[Test Case]
* A certain number of users have reported that simply running studio-
controls causes this error.
[Where problems could occur]
* Since this is a no-change rebuild being requested, the possibility
of breakage is slim to none. We are introducing no new changes here,
but rather, resolving a regression that happened as a result of a
newer version of cffi being introduced without a rebuild of
dependencies.
* If any problems happen, it would be a result of applications using
python-cffi and expecting this bug with built-in workarounds. I can't
imagine such a case exists, so this is just a stretch.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/libffi/+bug/1912535/+subscriptions
--
Mailing list: https://launchpad.net/~touch-packages
Post to : touch-packages@lists.launchpad.net
Unsubscribe : https://launchpad.net/~touch-packages
More help : https://help.launchpad.net/ListHelp
