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Commit fe097861 authored by Wang, Rui Y's avatar Wang, Rui Y Committed by Herbert Xu
Browse files

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: default avatarRui Wang <rui.y.wang@intel.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent 00420a65

crypto/algif_hash.c

+3 −1
Original line number Diff line number Diff line
@@ -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;

		}