Before this commit, only submits with both a BO_HANDLES chunk and a 'bo_list_handle' would be rejected (by amdgpu_cs_parser_bos).
But if UMD sent a multiple BO_HANDLES, what would happen is: * only the last one would be really used * all the others would leak memory as amdgpu_cs_p1_bo_handles would overwrite the previous p->bo_list value This commit rejects submissions with multiple BO_HANDLES chunks to match the implementation of the parser. Signed-off-by: Pierre-Eric Pelloux-Prayer <[email protected]> --- drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c index c08dfffae262..69d168d6f35a 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c @@ -154,6 +154,10 @@ static int amdgpu_cs_p1_bo_handles(struct amdgpu_cs_parser *p, struct drm_amdgpu_bo_list_entry *info; int r; + /* Disallow multiple BO_HANDLES chunks. */ + if (p->bo_list) + return -EINVAL; + r = amdgpu_bo_create_list_entry_array(data, &info); if (r) return r; -- 2.40.1
