linux-kernel - [PATCH 4.12 27/27] crypto: drbg - Fixes panic in wait_for

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Date:   Mon, 10 Jul 2017 19:10:24 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Harsh Jain <harshjain.prof@...il.com>,
        Stephan Mueller <smueller@...onox.de>,
        Herbert Xu <herbert@...dor.apana.org.au>
Subject: [PATCH 4.12 27/27] crypto: drbg - Fixes panic in wait_for_completion call

4.12-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Stephan Mueller <smueller@...onox.de>

commit b61929c654f2e725644935737c4c1ea9c741e2f8 upstream.

Initialise ctr_completion variable before use.

Cc: <stable@...r.kernel.org>
Signed-off-by: Harsh Jain <harshjain.prof@...il.com>
Signed-off-by: Stephan Mueller <smueller@...onox.de>
Signed-off-by: Herbert Xu <herbert@...dor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 crypto/drbg.c |    1 +
 1 file changed, 1 insertion(+)

--- a/crypto/drbg.c
+++ b/crypto/drbg.c
@@ -1691,6 +1691,7 @@ static int drbg_init_sym_kernel(struct d
 		return PTR_ERR(sk_tfm);
 	}
 	drbg->ctr_handle = sk_tfm;
+	init_completion(&drbg->ctr_completion);
 
 	req = skcipher_request_alloc(sk_tfm, GFP_KERNEL);
 	if (!req) {