I confirm this issue, here what I tested on debian 11.5 as of today: - linux-image-amd64 (5.10.149) and zfsutils-linux (2.0.3) both from bullseye => dkms build ok
- linux-image-amd64 from bullseye (5.10.149) and zfsutils-linux from bullseye-backports (2.1.5) => dkms build ok - linux-image-amd64 (6.0.3) from bullseye-backports and zfsutils-linux from bullseye-backports (2.1.5) => build fails with same error "shrinker" as reported
