The `WARNING in kprobe_optimizer` is reproduced on 5.10/5.15 stable branches. The problem ([1], link included in original commit description) has been fixed by the following patch which can be cleanly applied to 5.10/5.15. The fix is already present in all stable branches starting from 6.1. Link to the "failed to apply to 5.15" report [2]. Link to the "failed to apply to 5.10" report [3]. [1]: https://lore.kernel.org/all/Y8URdIfVr3pq2X8w@xxxxxxxxxxxxxxxx/ [2]: https://lore.kernel.org/stable/16781827629218@xxxxxxxxx/ [3]: https://lore.kernel.org/stable/16781827635613@xxxxxxxxx/
