On Sat, Dec 30, 2023 at 10:23:26AM -0500, Genes Lists wrote: > Apologies in advance, but I cannot git bisect this since machine was > running for 10 days on 6.6.8 before this happened. This problem simply doesn't make sense. There's just no way we shoud be able to get a not-uptodate folio into the page tables. We do have one pending patch which fixes a situation in which we can get some very odd-looking situations due to reusing a page which has been freed. I appreciate your ability to reproduce this is likely nil, but if you could add https://lore.kernel.org/all/20231220214715.912B4C433CA@xxxxxxxxxxxxxxx/ to your kernel, it might make things more stable for you.