Hey Anatoli, I just tried reproducing that and wasn't able to, using: root@ubuntu:~# uname -a Linux ubuntu 3.13.0-165-generic #215-Ubuntu SMP Wed Jan 16 11:46:47 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux I updated the system to the latest 14.04 packages, rebooted, and then cut and paste your directions above. Things seemed to go fine. Are you able to reproduce in a fresh environment? Also, could you email the crashing wireguard.ko, so that I can see exactly which instruction corresponds with wg_socket_init+0x13c/0x3f0? Thanks, Jason