diff options
| author | Gilad Ben-Yossef | 2020-02-02 18:19:14 +0200 |
|---|---|---|
| committer | Herbert Xu | 2020-02-13 17:05:25 +0800 |
| commit | 8962c6d2c2b8ca51b0f188109015b15fc5f4da44 (patch) | |
| tree | 98da78fc1b36e1170a5bcacf3875537c4bdcf7d8 /drivers | |
| parent | 11144416a7557372e64f68c729f3d7cb8890a6d1 (diff) | |
crypto: ccree - dec auth tag size from cryptlen map
Remove the auth tag size from cryptlen before mapping the destination
in out-of-place AEAD decryption thus resolving a crash with
extended testmgr tests.
Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com>
Reported-by: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: stable@vger.kernel.org # v4.19+
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/crypto/ccree/cc_buffer_mgr.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/crypto/ccree/cc_buffer_mgr.c b/drivers/crypto/ccree/cc_buffer_mgr.c index 885347b5b372..954f14bddf1d 100644 --- a/drivers/crypto/ccree/cc_buffer_mgr.c +++ b/drivers/crypto/ccree/cc_buffer_mgr.c @@ -894,8 +894,12 @@ static int cc_aead_chain_data(struct cc_drvdata *drvdata, if (req->src != req->dst) { size_for_map = areq_ctx->assoclen + req->cryptlen; - size_for_map += (direct == DRV_CRYPTO_DIRECTION_ENCRYPT) ? - authsize : 0; + + if (direct == DRV_CRYPTO_DIRECTION_ENCRYPT) + size_for_map += authsize; + else + size_for_map -= authsize; + if (is_gcm4543) size_for_map += crypto_aead_ivsize(tfm); |