On Wed, Apr 23, 2014 at 01:47:32AM +0200, Marek Vasut wrote:
> On Friday, April 18, 2014 at 12:01:41 PM, Horia Geanta wrote:
> > In case hash key is bigger than algorithm block size, it is hashed.
> > In this case, memory is allocated to keep this hash in hashed_key.
> > hashed_key has to be freed on the key_dma dma mapping error path.
> >
> > Cc: <stable@xxxxxxxxxxxxxxx> # 3.10+
> > Signed-off-by: Horia Geanta <horia.geanta@xxxxxxxxxxxxx>
> > ---
> > drivers/crypto/caam/caamhash.c | 4 +++-
> > 1 file changed, 3 insertions(+), 1 deletion(-)
> >
> > diff --git a/drivers/crypto/caam/caamhash.c
> > b/drivers/crypto/caam/caamhash.c index 0378328f47a7..2d244e629ed2 100644
> > --- a/drivers/crypto/caam/caamhash.c
> > +++ b/drivers/crypto/caam/caamhash.c
> > @@ -545,7 +545,8 @@ static int ahash_setkey(struct crypto_ahash *ahash,
> > DMA_TO_DEVICE);
> > if (dma_mapping_error(jrdev, ctx->key_dma)) {
> > dev_err(jrdev, "unable to map key i/o memory\n");
> > - return -ENOMEM;
> > + ret = -ENOMEM;
> > + goto map_err;
> > }
> > #ifdef DEBUG
> > print_hex_dump(KERN_ERR, "ctx.key@"__stringify(__LINE__)": ",
> > @@ -559,6 +560,7 @@ static int ahash_setkey(struct crypto_ahash *ahash,
> > DMA_TO_DEVICE);
> > }
> >
> > +map_err:
> > kfree(hashed_key);
>
> Reviewed-by: Marek Vasut <marex@xxxxxxx>
Patch applied to cryptodev. I'm not pushing this to stable
because it doesn't satisfy the conditions for it.
Thanks,
--
Email: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
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