On 2018-10-25 10:38 a.m., Christian König wrote:
> Make sure we don't try to go down further after the leave walk already
> ended. This fixes a crash with a new VM test.
>
> Signed-off-by: Christian König <christian.koenig@xxxxxxx>
Reviewed-by: Felix Kuehling <Felix.Kuehling@xxxxxxx>
Regards,
Felix
> ---
> drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
> index db0cbf8d219d..352b30409060 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
> @@ -542,7 +542,8 @@ static void amdgpu_vm_pt_next_leaf(struct amdgpu_device *adev,
> struct amdgpu_vm_pt_cursor *cursor)
> {
> amdgpu_vm_pt_next(adev, cursor);
> - while (amdgpu_vm_pt_descendant(adev, cursor));
> + if (cursor->pfn != ~0ll)
> + while (amdgpu_vm_pt_descendant(adev, cursor));
> }
>
> /**
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