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Diffstat (limited to 'crypto/algif_skcipher.c')
-rw-r--r--crypto/algif_skcipher.c15
1 files changed, 6 insertions, 9 deletions
diff --git a/crypto/algif_skcipher.c b/crypto/algif_skcipher.c
index 4f45dab24648..c12207c8dde9 100644
--- a/crypto/algif_skcipher.c
+++ b/crypto/algif_skcipher.c
@@ -251,6 +251,7 @@ static int skcipher_sendmsg(struct kiocb *unused, struct socket *sock,
struct af_alg_control con = {};
long copied = 0;
bool enc = 0;
+ bool init = 0;
int err;
int i;
@@ -259,6 +260,7 @@ static int skcipher_sendmsg(struct kiocb *unused, struct socket *sock,
if (err)
return err;
+ init = 1;
switch (con.op) {
case ALG_OP_ENCRYPT:
enc = 1;
@@ -280,7 +282,7 @@ static int skcipher_sendmsg(struct kiocb *unused, struct socket *sock,
if (!ctx->more && ctx->used)
goto unlock;
- if (!ctx->used) {
+ if (init) {
ctx->enc = enc;
if (con.iv)
memcpy(ctx->iv, con.iv->iv, ivsize);
@@ -359,8 +361,6 @@ static int skcipher_sendmsg(struct kiocb *unused, struct socket *sock,
err = 0;
ctx->more = msg->msg_flags & MSG_MORE;
- if (!ctx->more && !list_empty(&ctx->tsgl))
- sgl = list_entry(ctx->tsgl.prev, struct skcipher_sg_list, list);
unlock:
skcipher_data_wakeup(sk);
@@ -408,8 +408,6 @@ static ssize_t skcipher_sendpage(struct socket *sock, struct page *page,
done:
ctx->more = flags & MSG_MORE;
- if (!ctx->more && !list_empty(&ctx->tsgl))
- sgl = list_entry(ctx->tsgl.prev, struct skcipher_sg_list, list);
unlock:
skcipher_data_wakeup(sk);
@@ -448,14 +446,13 @@ static int skcipher_recvmsg(struct kiocb *unused, struct socket *sock,
while (!sg->length)
sg++;
- used = ctx->used;
- if (!used) {
+ if (!ctx->used) {
err = skcipher_wait_for_data(sk, flags);
if (err)
goto unlock;
}
- used = min_t(unsigned long, used, seglen);
+ used = min_t(unsigned long, ctx->used, seglen);
used = af_alg_make_sg(&ctx->rsgl, from, used, 1);
err = used;
@@ -566,7 +563,7 @@ static void skcipher_sock_destruct(struct sock *sk)
struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(&ctx->req);
skcipher_free_sgl(sk);
- sock_kfree_s(sk, ctx->iv, crypto_ablkcipher_ivsize(tfm));
+ sock_kzfree_s(sk, ctx->iv, crypto_ablkcipher_ivsize(tfm));
sock_kfree_s(sk, ctx, ctx->len);
af_alg_release_parent(sk);
}