On 5/31/21 7:49 PM, Mina Almasry wrote: > On Mon, May 31, 2021 at 5:37 PM Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> wrote: >> On Thu, 27 May 2021 17:46:49 -0700 Mina Almasry <almasrymina@xxxxxxxxxx> wrote: >> >> >> Do we have a Fixes: for this, or is it an always-been-there issue? > > This reproduces as far back as 4.15 kernel. Looks like always-been-there issue. > Specifically, Fixes: 8fb5debc5fcd ("userfaultfd: hugetlbfs: add hugetlb_mcopy_atomic_pte for userfaultfd support") -- Mike Kravetz