[patch 42/47] crypto: chainiv - Invoke completion function

[Greg KH]

2.6.25-stable review patch.  If anyone has any objections, please let us
know.

------------------
From: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>

Upstream commit: 872ac8743cb400192a9fce4ba2d3ffd7bb309685

When chainiv postpones requests it never calls their completion functions.
This causes symptoms such as memory leaks when IPsec is in use.

Signed-off-by: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx>

---
 crypto/chainiv.c |   10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

--- a/crypto/chainiv.c
+++ b/crypto/chainiv.c
@@ -117,6 +117,7 @@ static int chainiv_init(struct crypto_tf
 static int async_chainiv_schedule_work(struct async_chainiv_ctx *ctx)
 {
 	int queued;
+	int err = ctx->err;
 
 	if (!ctx->queue.qlen) {
 		smp_mb__before_clear_bit();
@@ -131,7 +132,7 @@ static int async_chainiv_schedule_work(s
 	BUG_ON(!queued);
 
 out:
-	return ctx->err;
+	return err;
 }
 
 static int async_chainiv_postpone_request(struct skcipher_givcrypt_request *req)
@@ -227,6 +228,7 @@ static void async_chainiv_do_postponed(s
 						     postponed);
 	struct skcipher_givcrypt_request *req;
 	struct ablkcipher_request *subreq;
+	int err;
 
 	/* Only handle one request at a time to avoid hogging keventd. */
 	spin_lock_bh(&ctx->lock);
@@ -241,7 +243,11 @@ static void async_chainiv_do_postponed(s
 	subreq = skcipher_givcrypt_reqctx(req);
 	subreq->base.flags |= CRYPTO_TFM_REQ_MAY_SLEEP;
 
-	async_chainiv_givencrypt_tail(req);
+	err = async_chainiv_givencrypt_tail(req);
+
+	local_bh_disable();
+	skcipher_givcrypt_complete(req, err);
+	local_bh_enable();
 }
 
 static int async_chainiv_init(struct crypto_tfm *tfm)

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