diff options
| author | Herbert Xu <herbert@gondor.apana.org.au> | 2016-01-18 18:46:10 +0800 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2016-01-19 15:52:09 +0800 |
| commit | 4f0414e54e4d1893c6f08260693f8ef84c929293 (patch) | |
| tree | 09b5e55bdd1d609468fccbe31a3812c15ac2a020 /crypto | |
| parent | e31835ad3abc6809703d3bbd2400bdd6285f8fea (diff) | |
| download | lwn-4f0414e54e4d1893c6f08260693f8ef84c929293.tar.gz lwn-4f0414e54e4d1893c6f08260693f8ef84c929293.zip | |
crypto: algif_skcipher - Load TX SG list after waiting
We need to load the TX SG list in sendmsg(2) after waiting for
incoming data, not before.
Cc: stable@vger.kernel.org
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Tested-by: Dmitry Vyukov <dvyukov@google.com>
Diffstat (limited to 'crypto')
| -rw-r--r-- | crypto/algif_skcipher.c | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/crypto/algif_skcipher.c b/crypto/algif_skcipher.c index dfff8b0b56df..df86fb47c3ae 100644 --- a/crypto/algif_skcipher.c +++ b/crypto/algif_skcipher.c @@ -647,13 +647,6 @@ static int skcipher_recvmsg_sync(struct socket *sock, struct msghdr *msg, lock_sock(sk); while (msg_data_left(msg)) { - sgl = list_first_entry(&ctx->tsgl, - struct skcipher_sg_list, list); - sg = sgl->sg; - - while (!sg->length) - sg++; - if (!ctx->used) { err = skcipher_wait_for_data(sk, flags); if (err) @@ -674,6 +667,13 @@ static int skcipher_recvmsg_sync(struct socket *sock, struct msghdr *msg, if (!used) goto free; + sgl = list_first_entry(&ctx->tsgl, + struct skcipher_sg_list, list); + sg = sgl->sg; + + while (!sg->length) + sg++; + skcipher_request_set_crypt(&ctx->req, sg, ctx->rsgl.sg, used, ctx->iv); |