hardening: Default randstruct off with rust for better allmodconfig support Currently randstruct does not support rust so we have Kconfig dependencies which prevent rust being enabled when randstruct is. Unfortunately this prevents rust being enabled in allmodconfig, our standard coverage build. randstruct gets turned on by default, then the dependency on !RANDSTRUCT causes rust to get disabled. Work around this by disabling randstruct by default if we have a usable rust toolchain and rust support for the architecture, circular dependencies prevent us directly depending on !RUST. This means we might end up with a configuration that disables both rust and randstruct but hopefully it's more likely go give the expected result. Signed-off-by: Mark Brown <broonie@kernel.org>
diff --git a/security/Kconfig.hardening b/security/Kconfig.hardening index 6923036..81c81ad 100644 --- a/security/Kconfig.hardening +++ b/security/Kconfig.hardening
@@ -278,7 +278,7 @@ choice prompt "Randomize layout of sensitive kernel structures" - default RANDSTRUCT_FULL if COMPILE_TEST && (GCC_PLUGINS || CC_HAS_RANDSTRUCT) + default RANDSTRUCT_FULL if !(RUST_IS_AVAILABLE && HAVE_RUST) && COMPILE_TEST && (GCC_PLUGINS || CC_HAS_RANDSTRUCT) default RANDSTRUCT_NONE help If you enable this, the layouts of structures that are entirely