github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-05-30 18:13:41 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

drm/amdkfd: Confirm list is non-empty before utilizing list_first_entry in kfd_topology.c

Browse Source 
Before using list_first_entry, make sure to check that list is not
empty, if list is empty return -ENODATA.

Fixes the below:
drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_topology.c:1347 kfd_create_indirect_link_prop() warn: can 'gpu_link' even be NULL?
drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_topology.c:1428 kfd_add_peer_prop() warn: can 'iolink1' even be NULL?
drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_topology.c:1433 kfd_add_peer_prop() warn: can 'iolink2' even be NULL?

Fixes: 0f28cca87e ("drm/amdkfd: Extend KFD device topology to surface peer-to-peer links")
Cc: Felix Kuehling <Felix.Kuehling@amd.com>
Cc: Christian König <christian.koenig@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Srinivasan Shanmugam <srinivasan.shanmugam@amd.com>
Suggested-by: Felix Kuehling <Felix.Kuehling@amd.com>
Suggested-by: Lijo Lazar <lijo.lazar@amd.com>
Reviewed-by: Felix Kuehling <felix.kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Srinivasan Shanmugam 2023-12-21 07:16:23 +05:30 committed by Alex Deucher
parent 13a1851f92
commit 499839eca3
1 changed files with 12 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

21
drivers/gpu/drm/amd/amdkfd/kfd_topology.c
View File

@ -1342,10 +1342,11 @@ static int kfd_create_indirect_link_prop(struct kfd_topology_device *kdev, int g
num_cpu++;
}
if (list_empty(&kdev->io_link_props))
return -ENODATA;
gpu_link = list_first_entry(&kdev->io_link_props,
struct kfd_iolink_properties, list);
if (!gpu_link)
return -ENOMEM;
struct kfd_iolink_properties, list);
for (i = 0; i < num_cpu; i++) {
/* CPU <--> GPU */
@ -1423,15 +1424,17 @@ static int kfd_add_peer_prop(struct kfd_topology_device *kdev,
peer->gpu->adev))
return ret;
if (list_empty(&kdev->io_link_props))
return -ENODATA;
iolink1 = list_first_entry(&kdev->io_link_props,
struct kfd_iolink_properties, list);
if (!iolink1)
return -ENOMEM;
struct kfd_iolink_properties, list);
if (list_empty(&peer->io_link_props))
return -ENODATA;
iolink2 = list_first_entry(&peer->io_link_props,
struct kfd_iolink_properties, list);
if (!iolink2)
return -ENOMEM;
struct kfd_iolink_properties, list);
props = kfd_alloc_struct(props);
if (!props)