[hjl@gnu-tgl-1 ~]$ readelf -n /lib64/libefivar.so.1 2>&1 | grep IBT
It is also compiled with -flto.
This bug appears to have been reported against 'rawhide' during the Fedora 33 development cycle.
Changing version to 33.
FEDORA-2021-82526afb7c has been submitted as an update to Fedora 35. https://bodhi.fedoraproject.org/updates/FEDORA-2021-82526afb7c
FEDORA-2021-82526afb7c has been pushed to the Fedora 35 stable repository.
If problem still persists, please make note of it in this bug report.