1) Create mission with zeus. Just to quickly create bunch of units.
2) Spam (or place slowly, does not matter) ~500 units around map or in 1 zone.
3) Server segfaults.
No errors in RPT, but catched this with strace just before crash:
https://gist.github.com/rlex/a4cfb19c1132b7aae0e3
Crash reproduced with same FUTEX warnings/errors.