I notice your xattr_get routine is missing a check for an error from the PyList_Append call.

While I was at it, I took the opportunity to rework the xattr_get logic to reduce the complexity of the control paths, eliminating all the gotos. As you can see from the enclosed patch, it becomes much easier to verify that everything will be be correctly disposed regardless of what errors might occur.

ldo-xattr_get.patch.txt