[PATCH AUTOSEL 6.10 031/121] drm/amd/amdgpu: Check tbo resource pointer

Sasha Levin
2024-08-01T00:12:23Z

From: Asad Kamal <asad.kamal@amd.com>

[ Upstream commit 6cd2b872643bb29bba01a8ac739138db7bd79007 ]

Validate tbo resource pointer, skip if NULL

Signed-off-by: Asad Kamal <asad.kamal@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 33f791d92ddf3..b151effc55dab 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -5011,7 +5011,8 @@ static int amdgpu_device_recover_vram(struct amdgpu_device *adev)
shadow = vmbo->shadow;

/* No need to recover an evicted BO */
- if (shadow->tbo.resource->mem_type != TTM_PL_TT ||
+ if (!shadow->tbo.resource ||
+ shadow->tbo.resource->mem_type != TTM_PL_TT ||
shadow->tbo.resource->start == AMDGPU_BO_INVALID_OFFSET ||
shadow->parent->tbo.resource->mem_type != TTM_PL_VRAM)
continue;
--
2.43.0