[PATCH 4.12 27/27] crypto: drbg - Fixes panic in wait_for_completion call

[Greg Kroah-Hartman]

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

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

From: Stephan Mueller <smueller@xxxxxxxxxx>

commit b61929c654f2e725644935737c4c1ea9c741e2f8 upstream.

Initialise ctr_completion variable before use.

Cc: <stable@xxxxxxxxxxxxxxx>
Signed-off-by: Harsh Jain <harshjain.prof@xxxxxxxxx>
Signed-off-by: Stephan Mueller <smueller@xxxxxxxxxx>
Signed-off-by: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 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) {