diff --git a/mm/kasan/CMakeLists.txt b/mm/kasan/CMakeLists.txt
index 8252112e34..3f7e32d668 100644
--- a/mm/kasan/CMakeLists.txt
+++ b/mm/kasan/CMakeLists.txt
@@ -25,6 +25,7 @@ if(CONFIG_MM_KASAN)
   list(APPEND SRCS generic.c)
   set_source_files_properties(generic.c PROPERTIES COMPILE_FLAGS
                                                    -fno-sanitize=kernel-address)
+  set_source_files_properties(generic.c PROPERTIES COMPILE_FLAGS -fno-builtin)
   set_source_files_properties(generic.c PROPERTIES COMPILE_FLAGS -fno-lto)
 endif()
 
diff --git a/mm/kasan/Make.defs b/mm/kasan/Make.defs
index a2a15b6a03..bc8e0c5696 100644
--- a/mm/kasan/Make.defs
+++ b/mm/kasan/Make.defs
@@ -43,6 +43,8 @@ ifeq ($(CONFIG_MM_KASAN),y)
   endif
 endif
 
+CFLAGS += -fno-builtin
+
 # Add the core heap directory to the build
 
 DEPPATH += --dep-path kasan