diff --git a/mm/hmm.c b/mm/hmm.c index 9b6a8a26a1fa..280585833adf 100644 --- a/mm/hmm.c +++ b/mm/hmm.c @@ -83,9 +83,6 @@ static int hmm_vma_fault(unsigned long addr, unsigned long end, WARN_ON_ONCE(!required_fault); hmm_vma_walk->last = addr; - if (!vma) - return -EFAULT; - if (required_fault & HMM_NEED_WRITE_FAULT) { if (!(vma->vm_flags & VM_WRITE)) return -EPERM; @@ -170,6 +167,11 @@ static int hmm_vma_walk_hole(unsigned long addr, unsigned long end, npages = (end - addr) >> PAGE_SHIFT; pfns = &range->pfns[i]; required_fault = hmm_range_need_fault(hmm_vma_walk, pfns, npages, 0); + if (!walk->vma) { + if (required_fault) + return -EFAULT; + return hmm_pfns_fill(addr, end, range, HMM_PFN_ERROR); + } if (required_fault) return hmm_vma_fault(addr, end, required_fault, walk); hmm_vma_walk->last = addr;