crypto: algif_hash - wait for crypto_ahash_init() to complete
commit fe09786178f9df713a4b2dd6b93c0a722346bf5e upstream. 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@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -51,7 +51,8 @@ static int hash_sendmsg(struct kiocb *unused, struct socket *sock,
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lock_sock(sk);
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if (!ctx->more) {
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err = crypto_ahash_init(&ctx->req);
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err = af_alg_wait_for_completion(crypto_ahash_init(&ctx->req),
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&ctx->completion);
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if (err)
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goto unlock;
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}
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@ -131,6 +132,7 @@ static ssize_t hash_sendpage(struct socket *sock, struct page *page,
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} else {
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if (!ctx->more) {
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err = crypto_ahash_init(&ctx->req);
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err = af_alg_wait_for_completion(err, &ctx->completion);
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if (err)
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goto unlock;
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}
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