Fedora bug 1174037 describes an issue with libffi, which was detected by a test failure in python-2.7.9:
"For any 1-16 byte structure not passed in registers, we weren't copying from the object to be passed, but from the array of objects. To obvious ill effect."
This same issue affects libffi in RHELSA, and causes the same test failure in EPEL7 python34.
Created attachment 1101589 [details]
Patch for rhel-7.3
Patrick available + fixed in Fedora. Acking.
Reproduced with libffi-3.0.13-16.el7.aarch64
VERIFIED with libffi-3.0.13-18.el7.aarch64
*** Bug 1385363 has been marked as a duplicate of this bug. ***
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.