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| author | Tadeusz Struk <tadeusz.struk@intel.com> | 2014-10-14 03:24:26 +0200 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2014-10-24 16:37:33 +0200 |
| commit | 923a6e5e5f171317ac8bb462ac4b814fa7880d3c (patch) | |
| tree | 0ff41bc4f02479cb4d12a9113b80a2616bef0022 | |
| parent | Linux 3.18-rc1 (diff) | |
| download | linux-923a6e5e5f171317ac8bb462ac4b814fa7880d3c.tar.xz linux-923a6e5e5f171317ac8bb462ac4b814fa7880d3c.zip | |
crypto: qat - Prevent dma mapping zero length assoc data
Do not attempt to dma map associated data if it is zero length.
Cc: stable@vger.kernel.org
Signed-off-by: Tadeusz Struk <tadeusz.struk@intel.com>
Tested-by: Nikolay Aleksandrov <nikolay@redhat.com>
Reviewed-by: Prarit Bhargava <prarit@redhat.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
| -rw-r--r-- | drivers/crypto/qat/qat_common/qat_algs.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/crypto/qat/qat_common/qat_algs.c b/drivers/crypto/qat/qat_common/qat_algs.c index f2e2f158cfbe..699ccf44e9bb 100644 --- a/drivers/crypto/qat/qat_common/qat_algs.c +++ b/drivers/crypto/qat/qat_common/qat_algs.c @@ -605,6 +605,8 @@ static int qat_alg_sgl_to_bufl(struct qat_crypto_instance *inst, goto err; for_each_sg(assoc, sg, assoc_n, i) { + if (!sg->length) + continue; bufl->bufers[bufs].addr = dma_map_single(dev, sg_virt(sg), sg->length, |