flintcq

if only by add and changed code i mentioned up, it will cause a stack problem [16045.295678] Thread overran stack, or stack corrupted [16045.295683] Oops: 0000 [#1] SMP [16045.295858] Modules...

install ssl lib

try install followings: libssl1.0.0:amd64 1.0.2g-1ubuntu4.12 amd64 Secure Sockets Layer toolkit - shared libraries openssl 1.0.2g-1ubuntu4.12 amd64 Secure Sockets Layer toolkit - cryptographic utility

@fanghuafan use the following command to install: apt-get install libssl1.0.0 openssl the reason i don't directly give this answer to you is that i think you should/could do it by...

sign-file: certs/signing_key.pem: No such file or directory i found the file in my os: /usr/src/linux-source-4.4.0/linux-source-4.4.0/certs/signing_key.pem that means your are not extract kernel source to its right place