linux-kernel - [PATCH v6 6/6] ARM: Enable KASan for arm

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Date:   Mon, 17 Jun 2019 15:11:34 -0700
From:   Florian Fainelli <f.fainelli@...il.com>
To:     linux-arm-kernel@...ts.infradead.org
Cc:     bcm-kernel-feedback-list@...adcom.com,
        Andrey Ryabinin <ryabinin@...tuozzo.com>,
        Abbott Liu <liuwenliang@...wei.com>,
        Florian Fainelli <f.fainelli@...il.com>, glider@...gle.com,
        dvyukov@...gle.com, corbet@....net, linux@...linux.org.uk,
        christoffer.dall@....com, marc.zyngier@....com, arnd@...db.de,
        nico@...xnic.net, vladimir.murzin@....com, keescook@...omium.org,
        jinb.park7@...il.com, alexandre.belloni@...tlin.com,
        ard.biesheuvel@...aro.org, daniel.lezcano@...aro.org,
        pombredanne@...b.com, rob@...dley.net, gregkh@...uxfoundation.org,
        akpm@...ux-foundation.org, mark.rutland@....com,
        catalin.marinas@....com, yamada.masahiro@...ionext.com,
        tglx@...utronix.de, thgarnie@...gle.com, dhowells@...hat.com,
        geert@...ux-m68k.org, andre.przywara@....com,
        julien.thierry@....com, drjones@...hat.com, philip@....systems,
        mhocko@...e.com, kirill.shutemov@...ux.intel.com,
        kasan-dev@...glegroups.com, linux-doc@...r.kernel.org,
        linux-kernel@...r.kernel.org, kvmarm@...ts.cs.columbia.edu,
        ryabinin.a.a@...il.com
Subject: [PATCH v6 6/6] ARM: Enable KASan for arm

From: Andrey Ryabinin <ryabinin@...tuozzo.com>

This patch enable kernel address sanitizer for ARM.

Acked-by: Dmitry Vyukov <dvyukov@...gle.com>
Signed-off-by: Abbott Liu <liuwenliang@...wei.com>
Signed-off-by: Florian Fainelli <f.fainelli@...il.com>
---
 Documentation/dev-tools/kasan.rst | 4 ++--
 arch/arm/Kconfig                  | 1 +
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/Documentation/dev-tools/kasan.rst b/Documentation/dev-tools/kasan.rst
index b72d07d70239..a9cb1feec0c1 100644
--- a/Documentation/dev-tools/kasan.rst
+++ b/Documentation/dev-tools/kasan.rst
@@ -21,8 +21,8 @@ global variables yet.
 
 Tag-based KASAN is only supported in Clang and requires version 7.0.0 or later.
 
-Currently generic KASAN is supported for the x86_64, arm64, xtensa and s390
-architectures, and tag-based KASAN is supported only for arm64.
+Currently generic KASAN is supported for the x86_64, arm, arm64, xtensa and
+s390 architectures, and tag-based KASAN is supported only for arm64.
 
 Usage
 -----
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 8869742a85df..5c98431ddaea 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -59,6 +59,7 @@ config ARM
 	select HAVE_ARCH_BITREVERSE if (CPU_32v7M || CPU_32v7) && !CPU_32v6
 	select HAVE_ARCH_JUMP_LABEL if !XIP_KERNEL && !CPU_ENDIAN_BE32 && MMU
 	select HAVE_ARCH_KGDB if !CPU_ENDIAN_BE32 && MMU
+	select HAVE_ARCH_KASAN if MMU
 	select HAVE_ARCH_MMAP_RND_BITS if MMU
 	select HAVE_ARCH_SECCOMP_FILTER if AEABI && !OABI_COMPAT
 	select HAVE_ARCH_THREAD_STRUCT_WHITELIST
-- 
2.17.1