Commit 3e3fcd29 authored by Natalie Vock's avatar Natalie Vock Committed by Alex Deucher
Browse files

drm/amdgpu: NULL-check BO's backing store when determining GFX12 PTE flags 



PRT BOs may not have any backing store, so bo->tbo.resource will be
NULL. Check for that before dereferencing.

Fixes: 0cce5f28 ("drm/amdkfd: Check correct memory types for is_system variable")
Reviewed-by: default avatarChristian König <christian.koenig@amd.com>
Signed-off-by: default avatarNatalie Vock <natalie.vock@gmx.de>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 37c890d8

drivers/gpu/drm/amd/amdgpu/gmc_v12_0.c

+3 −2
Original line number Diff line number Diff line
@@ -528,8 +528,9 @@ static void gmc_v12_0_get_vm_pte(struct amdgpu_device *adev, 


	bo_adev = amdgpu_ttm_adev(bo->tbo.bdev);

	coherent = bo->flags & AMDGPU_GEM_CREATE_COHERENT;

	is_system = (bo->tbo.resource->mem_type == TTM_PL_TT) ||

		(bo->tbo.resource->mem_type == AMDGPU_PL_PREEMPT);

	is_system = bo->tbo.resource &&

		(bo->tbo.resource->mem_type == TTM_PL_TT ||

		 bo->tbo.resource->mem_type == AMDGPU_PL_PREEMPT);



	if (bo && bo->flags & AMDGPU_GEM_CREATE_GFX12_DCC)

		*flags |= AMDGPU_PTE_DCC;