diff options
| -rw-r--r-- | mm/userfaultfd.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/mm/userfaultfd.c b/mm/userfaultfd.c index e5d2fb3ce2c1a..2872c71bbf369 100644 --- a/mm/userfaultfd.c +++ b/mm/userfaultfd.c @@ -552,6 +552,11 @@ static int __mfill_atomic_pte(struct mfill_state *state, struct folio *folio; int ret; + if (!ops) { + VM_WARN_ONCE(1, "UFFDIO_COPY for unsupported VMA"); + return -EOPNOTSUPP; + } + folio = ops->alloc_folio(state->vma, state->dst_addr); if (!folio) return -ENOMEM; |