This patch fixes issues when the code moves forward with a potential NULL pointer, without checking.
Signed-off-by: Andrew Martin <[email protected]> --- drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_fence.c | 2 +- drivers/gpu/drm/amd/amdkfd/kfd_crat.c | 2 +- drivers/gpu/drm/amd/amdkfd/kfd_debug.c | 12 ++++++++++-- drivers/gpu/drm/amd/amdkfd/kfd_process.c | 3 --- 4 files changed, 12 insertions(+), 7 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_fence.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_fence.c index 193ed8becab8..31b8fa52b42f 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_fence.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_fence.c @@ -107,7 +107,7 @@ static const char *amdkfd_fence_get_timeline_name(struct dma_fence *f) { struct amdgpu_amdkfd_fence *fence = to_amdgpu_amdkfd_fence(f); - return fence->timeline_name; + return fence ? fence->timeline_name : NULL; } /** diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_crat.c b/drivers/gpu/drm/amd/amdkfd/kfd_crat.c index 5f2dd378936e..d1d72cd332fc 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_crat.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_crat.c @@ -2358,7 +2358,7 @@ static int kfd_create_vcrat_image_gpu(void *pcrat_image, if (kdev->kfd->hive_id) { for (nid = 0; nid < proximity_domain; ++nid) { peer_dev = kfd_topology_device_by_proximity_domain_no_lock(nid); - if (!peer_dev->gpu) + if (!peer_dev || !peer_dev->gpu) continue; if (peer_dev->gpu->kfd->hive_id != kdev->kfd->hive_id) continue; diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_debug.c b/drivers/gpu/drm/amd/amdkfd/kfd_debug.c index ba9a09b6589a..1cb24092b17e 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_debug.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_debug.c @@ -516,9 +516,13 @@ int kfd_dbg_trap_set_flags(struct kfd_process *target, uint32_t *flags) int i, r = 0, rewind_count = 0; for (i = 0; i < target->n_pdds; i++) { + uint32_t caps; struct kfd_topology_device *topo_dev = - kfd_topology_device_by_id(target->pdds[i]->dev->id); - uint32_t caps = topo_dev->node_props.capability; + kfd_topology_device_by_id(target->pdds[i]->dev->id); + if (!topo_dev) + return -EINVAL; + + caps = topo_dev->node_props.capability; if (!(caps & HSA_CAP_TRAP_DEBUG_PRECISE_MEMORY_OPERATIONS_SUPPORTED) && (*flags & KFD_DBG_TRAP_FLAG_SINGLE_MEM_OP)) { @@ -1071,6 +1075,10 @@ int kfd_dbg_trap_device_snapshot(struct kfd_process *target, for (i = 0; i < tmp_num_devices; i++) { struct kfd_process_device *pdd = target->pdds[i]; struct kfd_topology_device *topo_dev = kfd_topology_device_by_id(pdd->dev->id); + if (!topo_dev) { + r = -EINVAL; + break; + } device_info.gpu_id = pdd->dev->id; device_info.exception_status = pdd->exception_status; diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_process.c b/drivers/gpu/drm/amd/amdkfd/kfd_process.c index aec7522407db..47783803f56f 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_process.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_process.c @@ -1763,9 +1763,6 @@ int kfd_process_device_init_vm(struct kfd_process_device *pdd, struct kfd_node *dev; int ret; - if (!drm_file) - return -EINVAL; - if (pdd->drm_priv) return -EBUSY; -- 2.43.0
