gallium/radeon: disallow exports of sparse and suballocated BOs

I think it's unsafe, because the slabs can reuse exported storage.

Reviewed-by: Nicolai Hähnle <[email protected]>

1 files changed, 3 insertions, 4 deletions

diff --git a/src/gallium/winsys/amdgpu/drm/amdgpu_bo.c b/src/gallium/winsys/amdgpu/drm/amdgpu_bo.c
index a86cc2c248a..5119d3f5525 100644
--- a/src/gallium/winsys/amdgpu/drm/amdgpu_bo.c
+++ b/src/gallium/winsys/amdgpu/drm/amdgpu_bo.c
@@ -1365,10 +1365,9 @@ static bool amdgpu_bo_get_handle(struct pb_buffer *buffer,
    enum amdgpu_bo_handle_type type;
    int r;
 
-   if (!bo->bo) {
-      offset += bo->va - bo->u.slab.real->va;
-      bo = bo->u.slab.real;
-   }
+   /* Don't allow exports of slab entries and sparse buffers. */
+   if (!bo->bo)
+      return false;
 
    bo->u.real.use_reusable_pool = false;