/lib/modules/4.4.0-91-generic/kernel/drivers/ is in linux-image-extra-4.4.0-91-generic 4.4.0-91.114.
This file is owned by root:root, with mode 0o755.
There are a lot of files here (4012 total).
We're only showing the immediate contents of /lib/modules/4.4.0-91-generic/kernel/drivers
.