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authorHerbert Xu <herbert@gondor.apana.org.au>2016-02-03 14:39:27 +0100
committerHerbert Xu <herbert@gondor.apana.org.au>2016-02-06 08:23:55 +0100
commitdad41997063723eaf5f77bc2015606a5a9bce320 (patch)
treec71b233fed1969b4905fda7acf7c782895aaef0f /crypto
parentcrypto: algif_skcipher - Do not dereference ctx without socket lock (diff)
downloadlinux-dad41997063723eaf5f77bc2015606a5a9bce320.tar.xz
linux-dad41997063723eaf5f77bc2015606a5a9bce320.zip
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>
Diffstat (limited to 'crypto')
-rw-r--r--crypto/algif_skcipher.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/crypto/algif_skcipher.c b/crypto/algif_skcipher.c
index ef84353e0f24..28556fce4267 100644
--- a/crypto/algif_skcipher.c
+++ b/crypto/algif_skcipher.c
@@ -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;