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Link: https://lkml.kernel.org/r/20220504011345.662299-49-Liam.Howlett@oracl= e.com Link: https://lkml.kernel.org/r/20220621204632.3370049-65-Liam.Howlett@orac= le.com Signed-off-by: Matthew Wilcox (Oracle) Signed-off-by: Liam R. Howlett Acked-by: Vlastimil Babka Cc: Catalin Marinas Cc: David Howells Cc: SeongJae Park Cc: Will Deacon Cc: Davidlohr Bueso Signed-off-by: Andrew Morton --- drivers/gpu/drm/i915/gem/i915_gem_userptr.c | 14 +++++--------- 1 file changed, 5 insertions(+), 9 deletions(-) diff --git a/drivers/gpu/drm/i915/gem/i915_gem_userptr.c b/drivers/gpu/drm/= i915/gem/i915_gem_userptr.c index 094f06b4ce33..a509f7da104b 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_userptr.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_userptr.c @@ -426,12 +426,11 @@ static const struct drm_i915_gem_object_ops i915_gem_= userptr_ops =3D { static int probe_range(struct mm_struct *mm, unsigned long addr, unsigned long len) { - const unsigned long end =3D addr + len; + VMA_ITERATOR(vmi, mm, addr); struct vm_area_struct *vma; - int ret =3D -EFAULT; =20 mmap_read_lock(mm); - for (vma =3D find_vma(mm, addr); vma; vma =3D vma->vm_next) { + for_each_vma_range(vmi, vma, addr + len) { /* Check for holes, note that we also update the addr below */ if (vma->vm_start > addr) break; @@ -439,16 +438,13 @@ probe_range(struct mm_struct *mm, unsigned long addr,= unsigned long len) if (vma->vm_flags & (VM_PFNMAP | VM_MIXEDMAP)) break; =20 - if (vma->vm_end >=3D end) { - ret =3D 0; - break; - } - addr =3D vma->vm_end; } mmap_read_unlock(mm); =20 - return ret; + if (vma) + return -EFAULT; + return 0; } =20 /* --=20 2.35.1