[PATCH v2 3/4] crypto: algif_hash - wait for crypto_ahash_init() to complete
From: Rui Wang <hidden>
Date: 2016-01-27 09:29:35
Also in:
lkml
Subsystem:
crypto api, the rest · Maintainers:
Herbert Xu, "David S. Miller", Linus Torvalds
hash_sendmsg/sendpage() need to wait for the completion of crypto_ahash_init() otherwise it can cause panic. Signed-off-by: Rui Wang <redacted> --- crypto/algif_hash.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/crypto/algif_hash.c b/crypto/algif_hash.c
index b4c24fe..83dc095 100644
--- a/crypto/algif_hash.c
+++ b/crypto/algif_hash.c@@ -49,7 +49,8 @@ static int hash_sendmsg(struct socket *sock, struct msghdr *msg, lock_sock(sk); if (!ctx->more) { - err = crypto_ahash_init(&ctx->req); + err = af_alg_wait_for_completion(crypto_ahash_init(&ctx->req), + &ctx->completion); if (err) goto unlock; }
@@ -120,6 +121,7 @@ static ssize_t hash_sendpage(struct socket *sock, struct page *page, } else { if (!ctx->more) { err = crypto_ahash_init(&ctx->req); + err = af_alg_wait_for_completion(err, &ctx->completion); if (err) goto unlock; }
--
1.8.3.1