stack_depot_get_extra_bits
unsigned int stack_depot_get_extra_bits(depot_stack_handle_t handle);
EXPORT_SYMBOL(stack_depot_get_extra_bits);
extra_bits = stack_depot_get_extra_bits(id);
depth = kmsan_depth_from_eb(stack_depot_get_extra_bits(origin));
is_uaf = kmsan_uaf_from_eb(stack_depot_get_extra_bits(origin));