From: Jesse Zhang jesse.zhang@amd.com
stable inclusion from stable-v6.6.50 commit 4ab720b6aa1ef5e71db1e534b5b45c80ac4ec58a category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IAU9PU CVE: CVE-2024-46805
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
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[ Upstream commit 1940708ccf5aff76de4e0b399f99267c93a89193 ]
Check the amdgpu_hive_info *hive that maybe is NULL.
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 Signed-off-by: Yi Yang yiyang13@huawei.com --- drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c index 429ef212c1f2..a4f9015345cc 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c @@ -1336,6 +1336,9 @@ static void psp_xgmi_reflect_topology_info(struct psp_context *psp, uint8_t dst_num_links = node_info.num_links;
hive = amdgpu_get_xgmi_hive(psp->adev); + if (WARN_ON(!hive)) + return; + list_for_each_entry(mirror_adev, &hive->device_list, gmc.xgmi.head) { struct psp_xgmi_topology_info *mirror_top_info; int j;