Messages in this thread Patch in this message | | | From | Arnd Bergmann <> | Subject | [PATCH] kasan: add missing Kconfig dependencies | Date | Mon, 10 Dec 2018 21:58:54 +0100 |
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Building with CONFIG_KASAN=y when neither KASAN_GENERIC nor KASAN_SW_TAGS can be selected leads to a build error:
arch/arm64/mm/kasan_init.c: In function 'kasan_pte_populate': arch/arm64/mm/kasan_init.c:106:28: error: 'KASAN_SHADOW_INIT' undeclared (first use in this function); did you mean 'KASAN_SHADOW_END'?
We should really only allow enabling KASAN when all its dependencies are met as it was before the introduction of CONFIG_KASAN_SW_TAGS.
Fixes: b8440cc16515 ("kasan: add CONFIG_KASAN_GENERIC and CONFIG_KASAN_SW_TAGS") Signed-off-by: Arnd Bergmann <arnd@arndb.de> --- lib/Kconfig.kasan | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/lib/Kconfig.kasan b/lib/Kconfig.kasan index b5d0cbfce4a1..83286bca2f70 100644 --- a/lib/Kconfig.kasan +++ b/lib/Kconfig.kasan @@ -15,6 +15,8 @@ if HAVE_ARCH_KASAN config KASAN bool "KASAN: runtime memory debugger" + depends on CC_HAS_KASAN_GENERIC || CC_HAS_KASAN_SW_TAGS + depends on (SLUB && SYSFS) || (SLAB && !DEBUG_SLAB) help Enables KASAN (KernelAddressSANitizer) - runtime memory debugger, designed to find out-of-bounds accesses and use-after-free bugs. -- 2.20.0
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