[PATCH] ubsan: Restore dependency on ARCH_HAS_UBSAN

[Kees Cook]

While removing CONFIG_UBSAN_SANITIZE_ALL, ARCH_HAS_UBSAN wasn't correctly
depended on. Restore this, as we do not want to attempt UBSAN builds
unless it's actually been tested on a given architecture.

Reported-by: Masahiro Yamada <masahiroy@xxxxxxxxxx>
Closes: https://lore.kernel.org/all/20240514095427.541201-1-masahiroy@xxxxxxxxxx
Fixes: 918327e9b7ff ("ubsan: Remove CONFIG_UBSAN_SANITIZE_ALL")
Signed-off-by: Kees Cook <keescook@xxxxxxxxxxxx>
---
Cc: Marco Elver <elver@xxxxxxxxxx>
Cc: Andrey Konovalov <andreyknvl@xxxxxxxxx>
Cc: Andrey Ryabinin <ryabinin.a.a@xxxxxxxxx>
Cc: kasan-dev@xxxxxxxxxxxxxxxx
Cc: linux-hardening@xxxxxxxxxxxxxxx
---
 lib/Kconfig.ubsan | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/Kconfig.ubsan b/lib/Kconfig.ubsan
index e81e1ac4a919..bdda600f8dfb 100644
--- a/lib/Kconfig.ubsan
+++ b/lib/Kconfig.ubsan
@@ -4,6 +4,7 @@ config ARCH_HAS_UBSAN
 
 menuconfig UBSAN
 	bool "Undefined behaviour sanity checker"
+	depends on ARCH_HAS_UBSAN
 	help
 	  This option enables the Undefined Behaviour sanity checker.
 	  Compile-time instrumentation is used to detect various undefined
-- 
2.34.1