linux-kernel - Re: [PATCH 3/4] kasan: Don't use kasan shadow pointer in generic functions

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Date:	Thu, 3 Sep 2015 11:47:12 +0300
From:	Andrey Ryabinin <ryabinin.a.a@...il.com>
To:	"Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>,
	akpm@...ux-foundation.org
Cc:	linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/4] kasan: Don't use kasan shadow pointer in generic
 functions

On 09/03/2015 10:54 AM, Aneesh Kumar K.V wrote:
> We can't use generic functions like print_hex_dump to access kasan
> shadow region. This require us to setup another kasan shadow region
> for the address passed (kasan shadow address). Most architecture won't
> be able to do that.

s/Most architecture/Some architectures

At least ARM/ARM64/x86 are able to do that.


> Hence make a copy of the shadow region row and
> pass that to generic functions.
> 
> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@...ux.vnet.ibm.com>
> ---
>  mm/kasan/report.c | 10 ++++++++--
>  1 file changed, 8 insertions(+), 2 deletions(-)

Anyway, for this patch:
	Reviewed-by: Andrey Ryabinin <ryabinin.a.a@...il.com>
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