Seems that problem in apparmor profile loading on older kernels. I have the same issue on custom kernel 4.4, but with ubuntu kernel 4.15 everything ok.
Workaround for older kernels: apt install apparmor-utils aa-disable /usr/bin/man
Upstream Bug: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=889617
Seems that problem in apparmor profile loading on older kernels.
I have the same issue on custom kernel 4.4, but with ubuntu kernel 4.15 everything ok.
Workaround for older kernels:
apt install apparmor-utils
aa-disable /usr/bin/man
Upstream Bug: https:/ /bugs.debian. org/cgi- bin/bugreport. cgi?bug= 889617