[ Upstream commit b40a6ab2cf9213923bf8e821ce7fa7f6a0a26990 ]
This is a partial cherry-pick of the above upstream commit.
It ensures the file descriptor passed in by userspace is a valid one.
Cc: Felix Kuehling <felix.kuehl...@amd.com>
Cc: Alex Deucher <alexander.deuc...@amd.com>
Cc: "Christian König" <christian.koe...@amd.com>
Cc: David Airlie <airl...@linux.ie>
Cc: Daniel Vetter <dan...@ffwll.ch>
Cc: amd-gfx@lists.freedesktop.org
Cc: dri-de...@lists.freedesktop.org
Signed-off-by: Lee Jones <lee.jo...@linaro.org>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c | 10 +++++++---
1 file changed, 7 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
index f92597c292fe5..4488aad64643b 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
@@ -1044,11 +1044,15 @@ int amdgpu_amdkfd_gpuvm_acquire_process_vm(struct
kgd_dev *kgd,
struct dma_fence **ef)
{
struct amdgpu_device *adev = get_amdgpu_device(kgd);
- struct drm_file *drm_priv = filp->private_data;
- struct amdgpu_fpriv *drv_priv = drm_priv->driver_priv;
- struct amdgpu_vm *avm = &drv_priv->vm;
+ struct amdgpu_fpriv *drv_priv;
+ struct amdgpu_vm *avm;
int ret;
+ ret = amdgpu_file_to_fpriv(filp, &drv_priv);
+ if (ret)
+ return ret;
+ avm = &drv_priv->vm;
+
/* Already a compute VM? */
if (avm->process_info)
return -EINVAL;
--
2.35.1.1178.g4f1659d476-goog
