Commit 4f0414e5 authored by Herbert Xu's avatar Herbert Xu

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: default avatarDmitry Vyukov <dvyukov@google.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
Tested-by: default avatarDmitry Vyukov <dvyukov@google.com>
parent e31835ad
...@@ -647,13 +647,6 @@ static int skcipher_recvmsg_sync(struct socket *sock, struct msghdr *msg, ...@@ -647,13 +647,6 @@ static int skcipher_recvmsg_sync(struct socket *sock, struct msghdr *msg,
lock_sock(sk); lock_sock(sk);
while (msg_data_left(msg)) { 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) { if (!ctx->used) {
err = skcipher_wait_for_data(sk, flags); err = skcipher_wait_for_data(sk, flags);
if (err) if (err)
...@@ -674,6 +667,13 @@ static int skcipher_recvmsg_sync(struct socket *sock, struct msghdr *msg, ...@@ -674,6 +667,13 @@ static int skcipher_recvmsg_sync(struct socket *sock, struct msghdr *msg,
if (!used) if (!used)
goto free; 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, skcipher_request_set_crypt(&ctx->req, sg, ctx->rsgl.sg, used,
ctx->iv); ctx->iv);
......
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