After seeing Greg K-H's comments permalink
about old Long Term Support kernels, I updated a couple of servers from 4.4 to 4.14. I ran into a problem with named (BIND) failing to start.
kernel: mmap: named (6332): VmData 35500032 exceed data ulimit 2097152. Update limits or use boot option ignore_rlimit_data.It seems that having the line
datasize 2M;in named.conf is the cause. Just remove that line. It seems that it's commonly been copied for donkeys' years: I can first find it in a config from September 2003.