Comment 3 for bug 1678119

apport-collect won’t let me share more info because I’m not the one who filed the bug.
But in that case the version signature should be enough information:

$ cat /proc/version_signature
Ubuntu 4.10.0-19.21-generic 4.10.8

This is just a missing header in the linux-headers package, presumably fixed in version 4.11 of the kernel.