Re: [PATCH v2 8/8] crypto/testmgr: Allocate only the required output size for hash tests

[Herbert Xu]

On Tue, Jan 10, 2017 at 03:24:46PM -0800, Andy Lutomirski wrote:
> There are some hashes (e.g. sha224) that have some internal trickery
> to make sure that only the correct number of output bytes are
> generated.  If something goes wrong, they could potentially overrun
> the output buffer.
> 
> Make the test more robust by allocating only enough space for the
> correct output size so that memory debugging will catch the error if
> the output is overrun.
> 
> Tested by intentionally breaking sha224 to output all 256
> internally-generated bits while running on KASAN.
> 
> Cc: Ard Biesheuvel <ard.biesheuvel@xxxxxxxxxx>
> Cc: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
> Signed-off-by: Andy Lutomirski <luto@xxxxxxxxxx>

Patch applied.  Thanks.
-- 
Email: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
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