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As a sidenote, when I first got this bug I conducted an > internet search and found this vaguely similar report: > https://lkml.org/lkml/2024/8/28/1558 > The report says its from 6.10.0, that would be not related, but at least from > the date it's possible that it could have tested the v7 patchset. > > Bert Karwatzki > > Thanks it looks similar but as I noted there, I couldn't repro it [0], the sender sent a bunch of seemingly bogus reports in a flurry and it seemed to be on exit whwere the issue occurred rather than anything the change did. Of course that could be due to maple tree corruption that only got flagged on exit, similar to your situation. Unfortunately we got no further information or details and the report was sparse so I don't think it hugely helps us. Thankfully here we have a repro-able situation (albeit, painful, sorry about that!) so we should be able to figure this out. [0]:https://lore.kernel.org/linux-mm/e50f9da1-521d-46ae-9e12-d82c4c093223@lucifer.local/