From fe09786178f9df713a4b2dd6b93c0a722346bf5e Mon Sep 17 00:00:00 2001 From: "Wang, Rui Y" Date: Wed, 27 Jan 2016 17:08:37 +0800 Subject: [PATCH] crypto: algif_hash - wait for crypto_ahash_init() to complete hash_sendmsg/sendpage() need to wait for the completion of crypto_ahash_init() otherwise it can cause panic. Cc: stable@vger.kernel.org Signed-off-by: Rui Wang Signed-off-by: Herbert Xu --- 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 608a7562839d..68a5ceaa04c8 100644 --- a/crypto/algif_hash.c +++ b/crypto/algif_hash.c @@ -54,7 +54,8 @@ 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; } @@ -125,6 +126,7 @@ 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; } -- 2.39.5