If the BAR initialization failed it may leave the vmm structure in an
unitialized state, leading to a null-pointer-dereference when the vmm is
dereferenced during teardown.
Signed-off-by: Jon Derrick <jonathan.derrick@xxxxxxxxx>
---
drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmm.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmm.c b/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmm.c
index fa93f964e6a4..41640e0584ac 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmm.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmm.c
@@ -1783,7 +1783,7 @@ nvkm_vmm_get(struct nvkm_vmm *vmm, u8 page, u64 size, struct nvkm_vma **pvma)
void
nvkm_vmm_part(struct nvkm_vmm *vmm, struct nvkm_memory *inst)
{
- if (inst && vmm->func->part) {
+ if (inst && vmm && vmm->func->part) {
mutex_lock(&vmm->mutex);
vmm->func->part(vmm, inst);
mutex_unlock(&vmm->mutex);
--
2.14.4
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