Firefox 88.0_1,2 dumps core with a "too much recursion" error if PIE ASLR is enabled: $ uname -a FreeBSD x202e 13.0-RELEASE FreeBSD 13.0-RELEASE #0 releng/13.0-n244733-ea31abc261f: Fri Apr 9 04:24:09 UTC 2021 root@releng1.nyi.freebsd.org:/usr/obj/usr/src/amd64.amd64/sys/GENERIC amd64 $ cat /boot/loader.conf ... kern.elf32.allow_wx=0 kern.elf64.allow_wx=0 kern.elf32.aslr.enable=1 kern.elf64.aslr.enable=1 kern.elf32.aslr.pie_enable=1 kern.elf64.aslr.pie_enable=1 It works if PIE ASLR is disabled.
Try # elfctl -e +noaslrstkgap /usr/local/lib/firefox/firefox as a workaround. See https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=239873
(In reply to Evgeniy Khramtsov from comment #2) That works for me. Closing this bug.