Null pointer dereference in nv-acpi.c

[tallossos]

NVIDIA Driver Version
Git

open-gpu-kernel-modules/kernel-open/nvidia/nv-acpi.c

Lines 718 to 720 in 8d7f201

	void NV_API_CALL nv_acpi_methods_uninit(void)
	{
	struct acpi_device *device = NULL;

open-gpu-kernel-modules/kernel-open/nvidia/nv-acpi.c

Lines 737 to 746 in 8d7f201

	#if defined(NV_ACPI_BUS_GET_DEVICE_PRESENT)
	acpi_bus_get_device(nvif_parent_gpu_handle, &device);
	nv_uninstall_notifier(device->driver_data, nv_acpi_event);
	#endif
	device->driver_data = NULL;
	nvif_parent_gpu_handle = NULL;
	return;

There isn't any validation on the return value from acpi_bus_get_device unlike other places where acpi_bus_get_device is being used.
device might be null when dereferencing.

Fixed in #216

[PAR2020]

Since PRs are closed, will close this issue as well.