kasan: KASAN_VMALLOC depends on KASAN_GENERIC

Currently only generic KASAN mode supports vmalloc, reflect that in the
config.

Link: https://lkml.kernel.org/r/0c493d3a065ad95b04313d00244e884a7e2498ff.1606161801.git.andreyknvl@google.com
Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
Reviewed-by: Marco Elver <elver@google.com>
Reviewed-by: Alexander Potapenko <glider@google.com>
Tested-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Branislav Rankov <Branislav.Rankov@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Evgenii Stepanov <eugenis@google.com>
Cc: Kevin Brodsky <kevin.brodsky@arm.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/lib/Kconfig.kasan b/lib/Kconfig.kasan
index 8fb0970..58dd3b8 100644 (file)
--- a/lib/Kconfig.kasan
+++ b/lib/Kconfig.kasan
@@ -146,7 +146,7 @@ config KASAN_SW_TAGS_IDENTIFY
 
 config KASAN_VMALLOC
        bool "Back mappings in vmalloc space with real shadow memory"
-       depends on HAVE_ARCH_KASAN_VMALLOC
+       depends on KASAN_GENERIC && HAVE_ARCH_KASAN_VMALLOC
        help
          By default, the shadow region for vmalloc space is the read-only
          zero page. This means that KASAN cannot detect errors involving