On Fri, Jul 27, 2018 at 11:20:35AM -0600, Ross Zwisler wrote: > Okay, the next failure I'm hitting is with DAX + XFS + generic/344. It > doesn't happen every time, but I can usually recreate it within 10 iterations > of the test. Here's the failure: Thanks. I've made some progress with this; the WARNing is coming from a vm_insert_* mkwrite call. Inserting sufficient debugging code has let me determine we still have a zero_pfn in the page table when we're trying to insert a new PFN.
