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Commit 6523651f authored by Ramandeep Trehan's avatar Ramandeep Trehan
Browse files

wqcrypto: qcedev: Add null pointer check on sg_src 



Add a null pointer check on sg_src to avoid a possible
null pointer dereference in qcedev driver.

Change-Id: I9d4f9147ae6c340064110381c98d064f29fd9444
Signed-off-by: default avatarRamandeep Trehan <rtrehan@codeaurora.org>
parent 727593cb

drivers/crypto/msm/qce50.c

+4 −1
Original line number Diff line number Diff line 
/* Qualcomm Crypto Engine driver.

 *

 * Copyright (c) 2012-2017, The Linux Foundation. All rights reserved.

 * Copyright (c) 2012-2018, 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
@@ -2440,6 +2440,9 @@ static int _qce_sps_add_sg_data(struct qce_device *pce_dev, 
	struct sps_iovec *iovec = sps_bam_pipe->iovec +

						sps_bam_pipe->iovec_count;



	if (!sg_src)

		return -ENOENT;



	while (nbytes > 0) {

		len = min(nbytes, sg_dma_len(sg_src));

		nbytes -= len;