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 <[email protected]> --- 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 _______________________________________________ Nouveau mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/nouveau
