In Artifex MuPDF 1.14.0, there is an infinite loop in the function svg_dev_end_tile in fitz/svg-device.c, as demonstrated by mutool.
https://bugs.ghostscript.com/show_bug.cgi?id=700301
http://www.ghostscript.com/cgi-bin/findgit.cgi?754ac68f119e0c25cd33c5d652d8aabd533a9fb3