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

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commit 6cc30748e17ea2a64051ceaf83a8372484e597f1 upstream.

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

Fixes: 0cce5f285d ("drm/amdkfd: Check correct memory types for is_system variable")
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Natalie Vock <natalie.vock@gmx.de>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 3e3fcd29b505cebed659311337ea03b7698767fc)
Cc: stable@vger.kernel.org # 6.12.x
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Natalie Vock
2025-03-10 18:08:05 +01:00
committed by Greg Kroah-Hartman
parent beb47bc673
commit 72235808ea
1 changed files with 3 additions and 2 deletions
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drivers/gpu/drm/amd/amdgpu/gmc_v12_0.c
+3 -2
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@@ -525,8 +525,9 @@ 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;