__lmb_alloc_base() seems not be integrated with the UEFI sub-system. So UEFI might hand out memory marked as reserved in the LMB sub-system.
Heinrich, do you plan to work on this?
I am not sure if I will have enough capacity to work on the LMB/UEFI integration. But it is surely an issue to be solved.
Best regards
Heinrich
It would be great if we could finally solve this situation with the 2022.01 release.
Right now Unmatched is probably the only board that doesn't turn off the relocation, and thus some people hit the issues.
Looking at the git history, the LMB issue is fixed in v2022.01-rc1 only right now. Minus UEFI part, which is/will be important for distributions.
david
I guess this is still a topic to be addressed.
If UEFI can still end up getting U-Boot overwritten, yes, that needs to be addressed. Only slightly surprised one of the capture-the-flag or similar events hasn't come to us yet with some CVEs related to that, too.
-- Tom