Upstream 07d9958739 was backported to linux-6.18.y as af98611ad109 (2026-10-15) and is in the 6.18.58 nixpkgs now builds for stellio. Applying the patch on top fails: patch(1) rejects all 10 hunks as already applied, so the kernel build has been broken since the nixpkgs bump brought 6.18.58.