From: "Aneesh Kumar K.V" <aneesh.kumar@linux•vnet.ibm.com>
To: Andrey Ryabinin <ryabinin.a.a@gmail•com>,
Benjamin Herrenschmidt <benh@kernel•crashing.org>,
paulus@samba•org, mpe@ellerman•id.au
Cc: linuxppc-dev@lists•ozlabs.org
Subject: Re: [RFC PATCH V1 7/8] powerpc/mm: kasan: Add kasan support for ppc64
Date: Tue, 18 Aug 2015 11:06:26 +0530 [thread overview]
Message-ID: <874mjxp38l.fsf@linux.vnet.ibm.com> (raw)
In-Reply-To: <CAPAsAGxSpA7XYWzL9R=uewwgF7-wN9ihbXQto-csd=RBWbPZqw@mail.gmail.com>
Andrey Ryabinin <ryabinin.a.a@gmail•com> writes:
> 2015-08-17 15:13 GMT+03:00 Andrey Ryabinin <ryabinin.a.a@gmail•com>:
>>
>> Did you disable stack instrumentation (in scripts/Makefile.kasa),
>> or you version of gcc doesn't support it (e.g. like 4.9.x on x86) ?
>>
>> Because this can't work with stack instrumentation as you don't have shadow for stack in early code.
>>
>> But this should be doable, as I think. All you need is to setup shadow for init task's
>> stack before executing any instrumented function.
>
> And you also need to define CONFIG_KASAN_SHADOW_OFFSET, so it will be
> passed to GCC
> via -fasan-shadow-offset= option.
I am using KASAN minimal config. Hence this was not needed. Do we need
to pass that option for outline instrumentation ? If not it would be a
good idea to split that out and make it depend on KASAN_INLINE
-aneesh
next prev parent reply other threads:[~2015-08-18 5:36 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-08-17 6:36 [RFC PATCH V1 0/8] KASAN ppc64 support Aneesh Kumar K.V
2015-08-17 6:36 ` [RFC PATCH V1 1/8] powerpc/mm: Add virt_to_pfn and use this instead of opencoding Aneesh Kumar K.V
2015-08-17 6:36 ` [RFC PATCH V1 2/8] kasan: MODULE_VADDR is not available on all archs Aneesh Kumar K.V
2015-08-17 6:36 ` [RFC PATCH V1 3/8] kasan: Rename kasan_enabled to kasan_report_enabled Aneesh Kumar K.V
2015-08-17 6:36 ` [RFC PATCH V1 4/8] kasan: Don't use kasan shadow pointer in generic functions Aneesh Kumar K.V
2015-08-17 11:36 ` Andrey Ryabinin
2015-08-18 5:29 ` Aneesh Kumar K.V
2015-08-18 9:12 ` Andrey Ryabinin
2015-08-17 6:36 ` [RFC PATCH V1 5/8] kasan: Enable arch to hook into kasan callbacks Aneesh Kumar K.V
2015-08-17 6:36 ` [RFC PATCH V1 6/8] kasan: Allow arch to overrride kasan shadow offsets Aneesh Kumar K.V
2015-08-17 6:36 ` [RFC PATCH V1 7/8] powerpc/mm: kasan: Add kasan support for ppc64 Aneesh Kumar K.V
2015-08-17 12:13 ` Andrey Ryabinin
2015-08-17 12:17 ` Andrey Ryabinin
2015-08-18 5:36 ` Aneesh Kumar K.V [this message]
2015-08-18 8:40 ` Andrey Ryabinin
2015-08-18 5:34 ` Aneesh Kumar K.V
2015-08-17 6:36 ` [RFC PATCH V1 8/8] powerpc: Disable kasan for kernel/ and mm/ directory Aneesh Kumar K.V
2015-08-17 6:54 ` [RFC PATCH V1 0/8] KASAN ppc64 support Benjamin Herrenschmidt
2015-08-17 9:50 ` Aneesh Kumar K.V
2015-08-17 10:01 ` Benjamin Herrenschmidt
2015-08-17 10:50 ` Aneesh Kumar K.V
2015-08-17 11:21 ` Benjamin Herrenschmidt
2015-08-17 11:29 ` Andrey Ryabinin
2015-08-18 5:42 ` Aneesh Kumar K.V
2015-08-18 8:50 ` Andrey Ryabinin
2015-08-18 9:21 ` Aneesh Kumar K.V
2015-08-18 9:30 ` Andrey Ryabinin
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