linux-kernel - [PATCH] lib: Kconfig: disable dynamic sanitizers for test builds

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Message-ID: <20231018153147.167393-1-hamza.mahfooz@amd.com>
Date:   Wed, 18 Oct 2023 11:31:47 -0400
From:   Hamza Mahfooz <hamza.mahfooz@....com>
To:     <linux-kernel@...r.kernel.org>
CC:     Rodrigo Siqueira <rodrigo.siqueira@....com>,
        Harry Wentland <harry.wentland@....com>,
        Alex Deucher <alexander.deucher@....com>,
        "Hamza Mahfooz" <hamza.mahfooz@....com>,
        Andrey Ryabinin <ryabinin.a.a@...il.com>,
        Alexander Potapenko <glider@...gle.com>,
        Andrey Konovalov <andreyknvl@...il.com>,
        Dmitry Vyukov <dvyukov@...gle.com>,
        Vincenzo Frascino <vincenzo.frascino@....com>,
        Marco Elver <elver@...gle.com>,
        "Nathan Chancellor" <nathan@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Tom Rix <trix@...hat.com>, <kasan-dev@...glegroups.com>,
        <llvm@...ts.linux.dev>
Subject: [PATCH] lib: Kconfig: disable dynamic sanitizers for test builds

kasan, kcsan and kmsan all have the tendency to blow up the stack
and there isn't a lot of value in having them enabled for test builds,
since they are intended to be useful for runtime debugging. So, disable
them for test builds.

Signed-off-by: Hamza Mahfooz <hamza.mahfooz@....com>
---
 lib/Kconfig.kasan | 1 +
 lib/Kconfig.kcsan | 1 +
 lib/Kconfig.kmsan | 1 +
 3 files changed, 3 insertions(+)

diff --git a/lib/Kconfig.kasan b/lib/Kconfig.kasan
index fdca89c05745..fbd85c4872c0 100644
--- a/lib/Kconfig.kasan
+++ b/lib/Kconfig.kasan
@@ -38,6 +38,7 @@ menuconfig KASAN
 		    CC_HAS_WORKING_NOSANITIZE_ADDRESS) || \
 		   HAVE_ARCH_KASAN_HW_TAGS
 	depends on (SLUB && SYSFS && !SLUB_TINY) || (SLAB && !DEBUG_SLAB)
+	depends on !COMPILE_TEST
 	select STACKDEPOT_ALWAYS_INIT
 	help
 	  Enables KASAN (Kernel Address Sanitizer) - a dynamic memory safety
diff --git a/lib/Kconfig.kcsan b/lib/Kconfig.kcsan
index 609ddfc73de5..7bcefdbfb46f 100644
--- a/lib/Kconfig.kcsan
+++ b/lib/Kconfig.kcsan
@@ -14,6 +14,7 @@ menuconfig KCSAN
 	bool "KCSAN: dynamic data race detector"
 	depends on HAVE_ARCH_KCSAN && HAVE_KCSAN_COMPILER
 	depends on DEBUG_KERNEL && !KASAN
+	depends on !COMPILE_TEST
 	select CONSTRUCTORS
 	select STACKTRACE
 	help
diff --git a/lib/Kconfig.kmsan b/lib/Kconfig.kmsan
index ef2c8f256c57..eb05c885d3fd 100644
--- a/lib/Kconfig.kmsan
+++ b/lib/Kconfig.kmsan
@@ -13,6 +13,7 @@ config KMSAN
 	depends on HAVE_ARCH_KMSAN && HAVE_KMSAN_COMPILER
 	depends on SLUB && DEBUG_KERNEL && !KASAN && !KCSAN
 	depends on !PREEMPT_RT
+	depends on !COMPILE_TEST
 	select STACKDEPOT
 	select STACKDEPOT_ALWAYS_INIT
 	help
-- 
2.42.0