linux-kernel - Re: [PATCH] arm: ubsan: select ARCH_HAS_UBSAN_SANITIZE

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Message-id: <e279a3cf-c231-65b8-f966-de35e7df3035@samsung.com>
Date:   Tue, 13 Mar 2018 14:13:23 +0900
From:   Jaehoon Chung <jh80.chung@...sung.com>
To:     jinb.park@...sung.com,
        "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: Re: [PATCH] arm: ubsan: select ARCH_HAS_UBSAN_SANITIZE_ALL

On 03/13/2018 01:53 PM, Jinbum Park wrote:
> 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
>