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crypto: algif_skcipher - Do not set MAY_BACKLOG on the async path 

The async path cannot use MAY_BACKLOG because it is not meant to
block, which is what MAY_BACKLOG does.  On the other hand, both
the sync and async paths can make use of MAY_SLEEP.

Cc: stable@vger.kernel.org
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
hifive-unleashed-5.1
Herbert Xu 2016-02-03 21:39:27 +08:00
parent 6454c2b83f
commit dad4199706
1 changed files with 3 additions and 2 deletions
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5
crypto/algif_skcipher.c
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@ -536,7 +536,7 @@ static int skcipher_recvmsg_async(struct socket *sock, struct msghdr *msg,
sg_init_table(sreq->tsg, tx_nents);
memcpy(iv, ctx->iv, ivsize);
skcipher_request_set_tfm(req, tfm);
skcipher_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG,
skcipher_request_set_callback(req, CRYPTO_TFM_REQ_MAY_SLEEP,
skcipher_async_cb, sreq);
while (iov_iter_count(&msg->msg_iter)) {
@ -950,7 +950,8 @@ static int skcipher_accept_parent_nokey(void *private, struct sock *sk)
ask->private = ctx;
skcipher_request_set_tfm(&ctx->req, skcipher);
skcipher_request_set_callback(&ctx->req, CRYPTO_TFM_REQ_MAY_BACKLOG,
skcipher_request_set_callback(&ctx->req, CRYPTO_TFM_REQ_MAY_SLEEP |
CRYPTO_TFM_REQ_MAY_BACKLOG,
af_alg_complete, &ctx->completion);
sk->sk_destruct = skcipher_sock_destruct;