Index: linux-4.4.9/arch/mips/vdso/Makefile
===================================================================
--- linux-4.4.9.orig/arch/mips/vdso/Makefile
+++ linux-4.4.9/arch/mips/vdso/Makefile
@@ -75,7 +75,7 @@ $(obj-vdso): KBUILD_AFLAGS := $(aflags-v
 
 $(obj)/vdso.lds: KBUILD_CPPFLAGS := $(native-abi)
 
-$(obj)/vdso.so.dbg: $(obj)/vdso.lds $(obj-vdso) FORCE
+$(obj)/vdso.so.dbg: $(obj)/vdso.lds $(obj-vdso) $(obj)/genvdso FORCE
 	$(call if_changed,vdsold)
 
 $(obj)/vdso-image.c: $(obj)/vdso.so.dbg $(obj)/genvdso FORCE
@@ -109,7 +109,7 @@ $(obj)/vdso-o32.lds: KBUILD_CPPFLAGS :=
 $(obj)/vdso-o32.lds: $(src)/vdso.lds.S FORCE
	$(call if_changed_dep,cpp_lds_S)

-$(obj)/vdso-o32.so.dbg: $(obj)/vdso-o32.lds $(obj-vdso-o32) FORCE
+$(obj)/vdso-o32.so.dbg: $(obj)/vdso-o32.lds $(obj-vdso-o32) $(obj)/genvdso FORCE
	$(call if_changed,vdsold)

 $(obj)/vdso-o32-image.c: VDSO_NAME := o32