diff --git a/kernel.spec b/kernel.spec
index b034680c305a7d8c5fc2d6d1f5304048811b8478..63c26d644e7c53de1132c833d0677e9e69cdc2e2 100644
--- a/kernel.spec
+++ b/kernel.spec
@@ -1,8 +1,12 @@
+%global build_cflags %{nil}
+
+%global build_ldflags %{nil}
+
 %define with_signmodules  1
 %define with_kabichk 0
 
 # Default without toolchain_clang
-%bcond_with toolchain_clang
+%bcond_without toolchain_clang
 
 %if %{with toolchain_clang}
 %global toolchain clang
@@ -372,6 +376,8 @@ sed -i arch/arm64/configs/openeuler_defconfig -e 's/^CONFIG_ARM64_VA_BITS_.*/CON
 
 %{make} ARCH=%{Arch} openeuler_defconfig
 
+scripts/config -e KASAN
+
 %if %{with clang_lto}
 scripts/config -e LTO_CLANG_FULL
 sed -i 's/# CONFIG_LTO_CLANG_FULL is not set/CONFIG_LTO_CLANG_FULL=y/' .config