From 4f858f27b897cf23bf3dbf136573443d9dbdef55 Mon Sep 17 00:00:00 2001 From: Christophe Leroy Date: Mon, 29 Jul 2019 20:32:40 +0800 Subject: [PATCH] crypto: talitos - fix skcipher failure due to wrong output IV MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit [ Upstream commit 3e03e792865ae48b8cfc69a0b4d65f02f467389f ] Selftests report the following: [ 2.984845] alg: skcipher: cbc-aes-talitos encryption test failed (wrong output IV) on test vector 0, cfg="in-place" [ 2.995377] 00000000: 3d af ba 42 9d 9e b4 30 b4 22 da 80 2c 9f ac 41 [ 3.032673] alg: skcipher: cbc-des-talitos encryption test failed (wrong output IV) on test vector 0, cfg="in-place" [ 3.043185] 00000000: fe dc ba 98 76 54 32 10 [ 3.063238] alg: skcipher: cbc-3des-talitos encryption test failed (wrong output IV) on test vector 0, cfg="in-place" [ 3.073818] 00000000: 7d 33 88 93 0f 93 b2 42 This above dumps show that the actual output IV is indeed the input IV. This is due to the IV not being copied back into the request. This patch fixes that. Signed-off-by: Christophe Leroy Reviewed-by: Horia Geantă Signed-off-by: Herbert Xu Signed-off-by: Sasha Levin Signed-off-by: Yang Yingliang --- drivers/crypto/talitos.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/crypto/talitos.c b/drivers/crypto/talitos.c index 5849075d54c7..d46f58c13433 100644 --- a/drivers/crypto/talitos.c +++ b/drivers/crypto/talitos.c @@ -1553,11 +1553,15 @@ static void ablkcipher_done(struct device *dev, int err) { struct ablkcipher_request *areq = context; + struct crypto_ablkcipher *cipher = crypto_ablkcipher_reqtfm(areq); + struct talitos_ctx *ctx = crypto_ablkcipher_ctx(cipher); + unsigned int ivsize = crypto_ablkcipher_ivsize(cipher); struct talitos_edesc *edesc; edesc = container_of(desc, struct talitos_edesc, desc); common_nonsnoop_unmap(dev, edesc, areq); + memcpy(areq->info, ctx->iv, ivsize); kfree(edesc); -- GitLab