From: Andrey Ryabinin <aryabinin@virtuozzo.com>
To: Will Deacon <will@kernel.org>, Mark Rutland <mark.rutland@arm.com>
Cc: crecklin@redhat.com, ard.biesheuvel@linaro.org,
catalin.marinas@arm.com, bhsharma@redhat.com,
Steve Capper <steve.capper@arm.com>,
kasan-dev@googlegroups.com, glider@google.com,
dvyukov@google.com, maz@kernel.org,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH] arm64: fix CONFIG_KASAN_SW_TAGS && CONFIG_KASAN_INLINE
Date: Thu, 15 Aug 2019 15:21:48 +0300 [thread overview]
Message-ID: <8e472cf5-21d1-be9e-9e47-ec40e35b3192@virtuozzo.com> (raw)
In-Reply-To: <20190815120908.kboyqfnr2fivuva4@willie-the-truck>
On 8/15/19 3:09 PM, Will Deacon wrote:
> On Wed, Aug 14, 2019 at 05:03:24PM +0100, Mark Rutland wrote:
>> From ecdf60051a850f817d98f84ae9011afa2311b8f1 Mon Sep 17 00:00:00 2001
>> From: Mark Rutland <mark.rutland@arm.com>
>> Date: Wed, 14 Aug 2019 15:31:57 +0100
>> Subject: [PATCH] kasan/arm64: fix CONFIG_KASAN_SW_TAGS && KASAN_INLINE
>>
>> The generic Makefile.kasan propagates CONFIG_KASAN_SHADOW_OFFSET into
>> KASAN_SHADOW_OFFSET, but only does so for CONFIG_KASAN_GENERIC.
>>
>> Since commit:
>>
>> 6bd1d0be0e97936d ("arm64: kasan: Switch to using KASAN_SHADOW_OFFSET")
>>
>> ... arm64 defines CONFIG_KASAN_SHADOW_OFFSET in Kconfig rather than
>> defining KASAN_SHADOW_OFFSET in a Makefile. Thus, if
>> CONFIG_KASAN_SW_TAGS && KASAN_INLINE are selected, we get build time
>> splats due to KASAN_SHADOW_OFFSET not being set:
>>
>> | [mark@lakrids:~/src/linux]% usellvm 8.0.1 usekorg 8.1.0 make ARCH=arm64 CROSS_COMPILE=aarch64-linux- CC=clang
>> | scripts/kconfig/conf --syncconfig Kconfig
>> | CC scripts/mod/empty.o
>> | clang (LLVM option parsing): for the -hwasan-mapping-offset option: '' value invalid for uint argument!
>> | scripts/Makefile.build:273: recipe for target 'scripts/mod/empty.o' failed
>> | make[1]: *** [scripts/mod/empty.o] Error 1
>> | Makefile:1123: recipe for target 'prepare0' failed
>> | make: *** [prepare0] Error 2
>>
>> Let's fix this by always propagating CONFIG_KASAN_SHADOW_OFFSET into
>> KASAN_SHADOW_OFFSET if CONFIG_KASAN is selected, moving the existing
>> common definition of +CFLAGS_KASAN_NOSANITIZE to the top of
>> Makefile.kasan.
>>
>> Signed-off-by: Mark Rutland <mark.rutland@arm.com>
>> Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>>> Cc: Catalin Marinas <catalin.marinas@arm.com>
>> Cc: Steve Capper <steve.capper@arm.com>
>> Cc: Will Deacon <will@kernel.org>
>> ---
Acked-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
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next prev parent reply other threads:[~2019-08-15 12:21 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-07 15:55 [PATCH V5 00/12] 52-bit kernel + user VAs Steve Capper
2019-08-07 15:55 ` [PATCH V5 01/12] arm64: mm: Remove bit-masking optimisations for PAGE_OFFSET and VMEMMAP_START Steve Capper
2019-08-07 15:55 ` [PATCH V5 02/12] arm64: mm: Flip kernel VA space Steve Capper
2019-08-07 16:12 ` Catalin Marinas
2019-08-07 15:55 ` [PATCH V5 03/12] arm64: kasan: Switch to using KASAN_SHADOW_OFFSET Steve Capper
2019-08-07 16:12 ` Catalin Marinas
2019-08-14 15:20 ` [PATCH] arm64: fix CONFIG_KASAN_SW_TAGS && CONFIG_KASAN_INLINE (was: Re: [PATCH V5 03/12] arm64: kasan: Switch to using) KASAN_SHADOW_OFFSET Mark Rutland
2019-08-14 15:57 ` Will Deacon
2019-08-14 16:03 ` Mark Rutland
2019-08-14 17:53 ` Steve Capper
2019-08-15 12:09 ` Will Deacon
2019-08-15 12:21 ` Andrey Ryabinin [this message]
2019-08-15 12:22 ` [PATCH] arm64: fix CONFIG_KASAN_SW_TAGS && CONFIG_KASAN_INLINE Will Deacon
2019-08-20 6:02 ` [PATCH] arm64: fix CONFIG_KASAN_SW_TAGS && CONFIG_KASAN_INLINE (was: Re: [PATCH V5 03/12] arm64: kasan: Switch to using) KASAN_SHADOW_OFFSET Bhupesh Sharma
2019-08-14 16:07 ` Steve Capper
2019-08-14 16:14 ` Steve Capper
2019-08-07 15:55 ` [PATCH V5 04/12] arm64: dump: De-constify VA_START and KASAN_SHADOW_START Steve Capper
2019-08-07 15:55 ` [PATCH V5 05/12] arm64: mm: Introduce VA_BITS_MIN Steve Capper
2019-08-07 16:14 ` Catalin Marinas
2019-08-07 15:55 ` [PATCH V5 06/12] arm64: mm: Introduce vabits_actual Steve Capper
2019-08-07 16:16 ` Catalin Marinas
2019-08-07 15:55 ` [PATCH V5 07/12] arm64: mm: Logic to make offset_ttbr1 conditional Steve Capper
2019-08-07 15:55 ` [PATCH V5 08/12] arm64: mm: Separate out vmemmap Steve Capper
2019-08-07 15:55 ` [PATCH V5 09/12] arm64: mm: Modify calculation of VMEMMAP_SIZE Steve Capper
2019-08-07 15:55 ` [PATCH V5 10/12] arm64: mm: Introduce 52-bit Kernel VAs Steve Capper
2019-08-07 15:55 ` [PATCH V5 11/12] arm64: mm: Remove vabits_user Steve Capper
2019-08-07 16:17 ` Catalin Marinas
2019-08-07 15:55 ` [PATCH V5 12/12] docs: arm64: Add layout and 52-bit info to memory document Steve Capper
2019-08-09 16:47 ` [PATCH V5 00/12] 52-bit kernel + user VAs Will Deacon
2019-08-13 11:23 ` Steve Capper
2019-08-13 11:59 ` Will Deacon
2019-08-13 12:43 ` Geert Uytterhoeven
2019-08-13 13:10 ` Will Deacon
2019-08-13 13:36 ` Geert Uytterhoeven
2019-08-14 8:04 ` Bhupesh Sharma
2019-08-14 8:21 ` Will Deacon
2019-08-14 11:59 ` Bhupesh Sharma
2019-08-14 12:24 ` Will Deacon
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