Daniel Axtens <dja@xxxxxxxxxx> wrote:
> Turning on crypto self-tests on a POWER8 shows:
>
> alg: hash: Test 1 failed for crc32c-vpmsum
> 00000000: ff ff ff ff
>
> Comparing the code with the Intel CRC32c implementation on which
> ours is based shows that we are doing an init with 0, not ~0
> as CRC32c requires.
>
> This probably wasn't caught because btrfs does its own weird
> open-coded initialisation.
>
> Initialise our internal context to ~0 on init.
>
> This makes the self-tests pass, and btrfs continues to work.
>
> Fixes: 6dd7a82cc54e ("crypto: powerpc - Add POWER8 optimised crc32c")
> Cc: Anton Blanchard <anton@xxxxxxxxx>
> Cc: stable@xxxxxxxxxxxxxxx
> Signed-off-by: Daniel Axtens <dja@xxxxxxxxxx>
Patch applied. Thanks.
--
Email: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Home Page: http://gondor.apana.org.au/~herbert/
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