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

From	Andrey Ryabinin <ryabinin.a.a@gmail.com>
Newsgroups	linux.kernel
Subject	Re: [PATCH 3/4] kasan: Don't use kasan shadow pointer in generic functions
Date	2015-09-03 10:50 +0200
Message-ID	<q4ynw-6T4-9@gated-at.bofh.it> (permalink)
References	<q4xB8-5Ju-7@gated-at.bofh.it> <q4xB8-5Ju-17@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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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@linux.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@gmail.com>
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[PATCH 1/4] kasan: Rename kasan_enabled to kasan_report_enabled "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com> - 2015-09-03 10:00 +0200
  [PATCH 2/4] kasan: MODULE_VADDR is not available on all archs "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com> - 2015-09-03 10:00 +0200
    Re: [PATCH 2/4] kasan: MODULE_VADDR is not available on all archs Andrey Ryabinin <ryabinin.a.a@gmail.com> - 2015-09-03 10:30 +0200
  [PATCH 4/4] kasan: Prevent deadlock in kasan reporting "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com> - 2015-09-03 10:00 +0200
    Re: [PATCH 4/4] kasan: Prevent deadlock in kasan reporting Andrey Ryabinin <ryabinin.a.a@gmail.com> - 2015-09-03 11:20 +0200
  [PATCH 3/4] kasan: Don't use kasan shadow pointer in generic functions "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com> - 2015-09-03 10:00 +0200
    Re: [PATCH 3/4] kasan: Don't use kasan shadow pointer in generic  functions Andrey Ryabinin <ryabinin.a.a@gmail.com> - 2015-09-03 10:50 +0200

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