Comment 4 for bug 1956040

It seems the following patch from Fedora fixes the issue:

https://src.fedoraproject.org/rpms/libserf/blob/c3b19ddf182532c13c04f31403f11c46631d5938/f/libserf-1.3.9-bio-ctrl.patch

I'll get in touch with the patch author to try and understand what's going on, and maybe upstream it?