ubsan: Restore dependency on ARCH_HAS_UBSAN

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@kernel.org>
Closes: https://lore.kernel.org/all/20240514095427.541201-1-masahiroy@kernel.org
Fixes: 918327e9b7ff ("ubsan: Remove CONFIG_UBSAN_SANITIZE_ALL")
Link: https://lore.kernel.org/r/20240514233747.work.441-kees@kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>

diff --git a/lib/Kconfig.ubsan b/lib/Kconfig.ubsan
index e81e1ac4a919b5b5548bc6de96276bb5d9d2b69e..bdda600f8dfbebd7e468527e190d2686a269ef89 100644 (file)
--- 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