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drm/amdgpu: fix dereference after null check

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[ Upstream commit b1f7810b05 ]

check the pointer hive before use.

Signed-off-by: Jesse Zhang <Jesse.Zhang@amd.com>
Reviewed-by: Tim Huang <Tim.Huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Jesse Zhang 2024-05-08 14:51:35 +08:00 committed by Greg Kroah-Hartman
parent d116bb921e
commit 0aad97bf6d
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
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@ -5236,7 +5236,7 @@ int amdgpu_device_gpu_recover(struct amdgpu_device *adev,
* to put adev in the 1st position. * to put adev in the 1st position.
*/ */
INIT_LIST_HEAD(&device_list); INIT_LIST_HEAD(&device_list);
if (!amdgpu_sriov_vf(adev) && (adev->gmc.xgmi.num_physical_nodes > 1)) { if (!amdgpu_sriov_vf(adev) && (adev->gmc.xgmi.num_physical_nodes > 1) && hive) {
list_for_each_entry(tmp_adev, &hive->device_list, gmc.xgmi.head) { list_for_each_entry(tmp_adev, &hive->device_list, gmc.xgmi.head) {
list_add_tail(&tmp_adev->reset_list, &device_list); list_add_tail(&tmp_adev->reset_list, &device_list);
if (gpu_reset_for_dev_remove && adev->shutdown) if (gpu_reset_for_dev_remove && adev->shutdown)