(In reply to Christian Heimes from comment #0)
> glibc-2.26-21.fc27.x86_64
Please upgrade to glibc-2.26-24.fc27.x86_64 or later and retest. This is likely bug 1527887.
This issue will reproduce only on machines with AVX-512 support.
I haven't seen a segfault in a while. It looks like the glibc update did the trick. Thanks Florian!
*** This bug has been marked as a duplicate of bug 1527887 ***