--- ./Makefile.orig
+++ ./Makefile
@@ -1383,6 +1383,7 @@
 $(module-dirs): crmodverdir $(objtree)/Module.symvers
 	$(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@)
 
+modules: KBUILD_CFLAGS += $(CONSTIFY_PLUGIN) $(STACKLEAK_PLUGIN)
 modules: $(module-dirs)
 	@$(kecho) '  Building modules, stage 2.';
 	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost