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Message-ID: <20180313045357epcms1p34fb1e2ad09a8288017058c414c21ce26@epcms1p3>
Date:   Tue, 13 Mar 2018 13:53:57 +0900
From:   Jinbum Park <jinb.park@...sung.com>
To:     "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
CC:     "aryabinin@...tuozzo.com" <aryabinin@...tuozzo.com>,
        "mark.rutland@....com" <mark.rutland@....com>,
        "catalin.marinas@....com" <catalin.marinas@....com>
Subject: [PATCH] arm: ubsan: select ARCH_HAS_UBSAN_SANITIZE_ALL

To enable UBSAN on arm, ARCH_HAS_UBSAN_SANITIZE_ALL is needed to be selected.

Basic test has passed on Raspberry Pi2, Raspbian jessi lite with
CONFIG_UBSAN_SANITIZE_ALL, CONFIG_UBSAN_NULL.

Signed-off-by: Jinbum Park <jinb.park@...sung.com>
---
 arch/arm/Kconfig                  | 1 +
 arch/arm/boot/compressed/Makefile | 1 +
 arch/arm/vdso/Makefile            | 1 +
 3 files changed, 3 insertions(+)

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 1878083..bdd1561 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -7,6 +7,7 @@ config ARM
 	select ARCH_HAS_DEBUG_VIRTUAL if MMU
 	select ARCH_HAS_DEVMEM_IS_ALLOWED
 	select ARCH_HAS_ELF_RANDOMIZE
+	select ARCH_HAS_UBSAN_SANITIZE_ALL
 	select ARCH_HAS_SET_MEMORY
 	select ARCH_HAS_PHYS_TO_DMA
 	select ARCH_HAS_STRICT_KERNEL_RWX if MMU && !XIP_KERNEL
diff --git a/arch/arm/boot/compressed/Makefile b/arch/arm/boot/compressed/Makefile
index 45a6b9b..1b374ba 100644
--- a/arch/arm/boot/compressed/Makefile
+++ b/arch/arm/boot/compressed/Makefile
@@ -24,6 +24,7 @@ OBJS		+= hyp-stub.o
 endif
 
 GCOV_PROFILE		:= n
+UBSAN_SANITIZE		:= n
 
 #
 # Architecture dependencies
diff --git a/arch/arm/vdso/Makefile b/arch/arm/vdso/Makefile
index bb411821..05597f7 100644
--- a/arch/arm/vdso/Makefile
+++ b/arch/arm/vdso/Makefile
@@ -29,6 +29,7 @@ CFLAGS_vgettimeofday.o = -O2
 
 # Disable gcov profiling for VDSO code
 GCOV_PROFILE := n
+UBSAN_SANITIZE := n
 
 # Force dependency
 $(obj)/vdso.o : $(obj)/vdso.so
-- 
1.9.1

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