diff options
| author | Jonathan Gray <jsg@cvs.openbsd.org> | 2024-08-30 04:03:31 +0000 |
|---|---|---|
| committer | Jonathan Gray <jsg@cvs.openbsd.org> | 2024-08-30 04:03:31 +0000 |
| commit | ff8cb62ab81628f57f84dd3f31c55409c1b345ac (patch) | |
| tree | 55f38ef3f1c2fae6ca72059aca8d8be5a5d195ea /sys | |
| parent | 27fcf632859e8e749b2304e42a294d7d40ae5fa0 (diff) | |
drm/amdgpu: fix dereference null return value for the function amdgpu_vm_pt_parent
From Jesse Zhang
3cc03d1dbdcf88d3c05578c286a2e8a07befac93 in linux-6.6.y/6.6.48
511a623fb46a6cf578c61d4f2755783c48807c77 in mainline linux
Diffstat (limited to 'sys')
| -rw-r--r-- | sys/dev/pci/drm/amd/amdgpu/amdgpu_vm_pt.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/sys/dev/pci/drm/amd/amdgpu/amdgpu_vm_pt.c b/sys/dev/pci/drm/amd/amdgpu/amdgpu_vm_pt.c index 8da974096bc..8c5e7d09485 100644 --- a/sys/dev/pci/drm/amd/amdgpu/amdgpu_vm_pt.c +++ b/sys/dev/pci/drm/amd/amdgpu/amdgpu_vm_pt.c @@ -766,11 +766,15 @@ int amdgpu_vm_pde_update(struct amdgpu_vm_update_params *params, struct amdgpu_vm_bo_base *entry) { struct amdgpu_vm_bo_base *parent = amdgpu_vm_pt_parent(entry); - struct amdgpu_bo *bo = parent->bo, *pbo; + struct amdgpu_bo *bo, *pbo; struct amdgpu_vm *vm = params->vm; uint64_t pde, pt, flags; unsigned int level; + if (WARN_ON(!parent)) + return -EINVAL; + + bo = parent->bo; for (level = 0, pbo = bo->parent; pbo; ++level) pbo = pbo->parent; |