From 256503071c2de2b5b5c20e06654aa9a44f13aa62 Mon Sep 17 00:00:00 2001 From: Felix Kuehling Date: Tue, 31 Oct 2023 13:30:00 -0400 Subject: [PATCH] drm/amdgpu: Fix possible null pointer dereference MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit mem = bo->tbo.resource may be NULL in amdgpu_vm_bo_update. Fixes: 180253782038 ("drm/ttm: stop allocating dummy resources during BO creation") Signed-off-by: Felix Kuehling Reviewed-by: Christian König Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org --- drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c index 904252456d25..100497cb19e6 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c @@ -1098,8 +1098,8 @@ int amdgpu_vm_bo_update(struct amdgpu_device *adev, struct amdgpu_bo_va *bo_va, bo = gem_to_amdgpu_bo(gobj); } mem = bo->tbo.resource; - if (mem->mem_type == TTM_PL_TT || - mem->mem_type == AMDGPU_PL_PREEMPT) + if (mem && (mem->mem_type == TTM_PL_TT || + mem->mem_type == AMDGPU_PL_PREEMPT)) pages_addr = bo->tbo.ttm->dma_address; } -- 2.39.5