Linux sched_ext Bug Fixes Follow AI Review

AI code review is starting to look useful where it matters most: not as a demo, but as a bug-finding multiplier for deeply stateful systems code. sched_ext is a good stress test because the BPF-based scheduler surface is flexible enough to invite subtle invariants and kernel-grade footguns.

• –The reported fixes cover high-risk classes of kernel bugs, including use-after-free, lock/state inconsistency, rq-lock deadlock, and kfunc misuse.
• –Tejun Heo’s note that each patch stands on its own should make stable backporting and regression tracking much more tractable.
• –Backporting into 6.12 LTS suggests these are not just speculative cleanups; they likely touch shipped systems.
• –This is a strong signal for other kernel subsystems: AI review seems most valuable as a second pass that catches edge cases humans miss, not as a replacement for maintainer review.