Now that the minimum supported version of LLVM for building the kernel
has been bumped to 15.0.0, two KMSAN checks can be cleaned up.
CONFIG_HAVE_KMSAN_COMPILER will always be true when using clang so
remove the cc-option test and use a simple check for CONFIG_CC_IS_CLANG.
CONFIG_HAVE_KMSAN_PARAM_RETVAL will always be true so it can be removed
outright.
Acked-by: Marco Elver <elver@google.com>
Reviewed-by: Kees Cook <kees@kernel.org>
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
---
Cc: kasan-dev@googlegroups.com
---
lib/Kconfig.kmsan | 11 +----------
1 file changed, 1 insertion(+), 10 deletions(-)
diff --git a/lib/Kconfig.kmsan b/lib/Kconfig.kmsan
index 0541d7b079cc..7251b6b59e69 100644
--- a/lib/Kconfig.kmsan
+++ b/lib/Kconfig.kmsan
@@ -3,10 +3,7 @@ config HAVE_ARCH_KMSAN
bool
config HAVE_KMSAN_COMPILER
- # Clang versions <14.0.0 also support -fsanitize=kernel-memory, but not
- # all the features necessary to build the kernel with KMSAN.
- depends on CC_IS_CLANG && CLANG_VERSION >= 140000
- def_bool $(cc-option,-fsanitize=kernel-memory -mllvm -msan-disable-checks=1)
+ def_bool CC_IS_CLANG
config KMSAN
bool "KMSAN: detector of uninitialized values use"
@@ -28,15 +25,9 @@ config KMSAN
if KMSAN
-config HAVE_KMSAN_PARAM_RETVAL
- # -fsanitize-memory-param-retval is supported only by Clang >= 14.
- depends on HAVE_KMSAN_COMPILER
- def_bool $(cc-option,-fsanitize=kernel-memory -fsanitize-memory-param-retval)
-
config KMSAN_CHECK_PARAM_RETVAL
bool "Check for uninitialized values passed to and returned from functions"
default y
- depends on HAVE_KMSAN_PARAM_RETVAL
help
If the compiler supports -fsanitize-memory-param-retval, KMSAN will
eagerly check every function parameter passed by value and every
--
2.50.1