I've seen several people making that mistake now... do NOT test for copy.fail by looking at the loaded modules. Linux has a hotplug mechanism that will often load the module on demand. a reliable preliminary test is creating an AF_ALG socket of the required type:

python -c 'import socket; socket.socket(38,5,0).bind(("aead","authencesn(hmac(sha256),cbc(aes))"))'


if this fails, you're most likely not vulnerable