Re: Segmentation fault with parallelism PG 10.4

"Heinemann, Manfred (IMS)" <HeinemannM@imsweb.com> writes:
> We allow some user querying against the database and a user wrote sql that would repeatedly cause a segmentation
fault.We can't share the data but I will show what I can. 

The info you've provided is not of much help, but if you could show
a stack trace from the point of the segfault, that might narrow
things down.

https://wiki.postgresql.org/wiki/Generating_a_stack_trace_of_a_PostgreSQL_backend

            regards, tom lane