Commit 8962c6d2 authored by Gilad Ben-Yossef's avatar Gilad Ben-Yossef Committed by Herbert Xu
Browse files

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: default avatarGilad Ben-Yossef <gilad@benyossef.com>
Reported-by: default avatarGeert Uytterhoeven <geert+renesas@glider.be>
Cc: stable@vger.kernel.org # v4.19+
Tested-by: default avatarGeert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent 11144416

drivers/crypto/ccree/cc_buffer_mgr.c

+6 −2
Original line number Diff line number Diff line
@@ -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);