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Message-Id: <1453885718-24599-4-git-send-email-rui.y.wang@intel.com>
Date: Wed, 27 Jan 2016 17:08:37 +0800
From: Rui Wang <rui.y.wang@...el.com>
To: herbert@...dor.apana.org.au
Cc: tim.c.chen@...ux.intel.com, rui.y.wang@...el.com,
linux-crypto@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v2 3/4] 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.
Signed-off-by: Rui Wang <rui.y.wang@...el.com>
---
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
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