In the Linux kernel, the following vulnerability has been resolved:drm/connector: hdmi: Fix memory leak in drm_display_mode_from_cea_vic()modprobe drm_connector_test and then rmmod drm_connector_test,
the following memory leak occurs.The `mode` allocated in drm_mode_duplicate() called by
drm_display_mode_from_cea_vic() is not freed, which cause the memory leak:Free `mode` by using drm_kunit_display_mode_from_cea_vic()
to fix it.