Commit 09ad8ed7 authored Feb 16, 2016 by Sivanesan Rajapupathi Committed by Gerrit - the friendly Code Review server Feb 17, 2016

crypto: msm: qcrypto: Fix hash crash if not last issue



If an ahash request is not final, the result variable of ahash_request
may not exist. In the completion callback function, then, do not
copy the digest result to result variable of ahash_request, if it not
final.  Otherwise, crash may happen.

Change-Id: I169218e8658500539b19408eca3afeabcaa4816b
Acked-by: Che-Min Hsieh <cheminh@qti.qualcomm.com>
Signed-off-by: Sivanesan Rajapupathi <srajap@codeaurora.org>

parent cc339a2a

drivers/crypto/msm/qcrypto.c

+3 −2

Original line number	Diff line number	Diff line
		/* Qualcomm Crypto driver
		*
		* Copyright (c) 2010-2015, The Linux Foundation. All rights reserved.
		* Copyright (c) 2010-2016, The Linux Foundation. All rights reserved.
		*
		* This program is free software; you can redistribute it and/or modify
		* it under the terms of the GNU General Public License version 2 and
		@@ -1605,6 +1605,7 @@ static void _qce_ahash_complete(void cookie, unsigned char digest,
		#endif
		if (digest) {
		memcpy(rctx->digest, digest, diglen);
		if (rctx->last_blk)
		memcpy(areq->result, digest, diglen);
		}
		if (authdata) {