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Commit 46135d80 authored by Mohammad Johny Shaik's avatar Mohammad Johny Shaik Committed by Gerrit - the friendly Code Review server
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msm:qdsp6v2: Check null pointer on userspace data argument in kernel 



The null pointer check is required to ensure that userspace data
in kernalspace is not null.

Change-Id: I9e522c393ae643626a4bae03731a73f5d6db6458
CRs-Fixed: 563752
Signed-off-by: default avatarMohammad Johny Shaik <mjshai@codeaurora.org>
parent bd52ce2e

sound/soc/msm/qdsp6v2/msm-lsm-client.c

+3 −0
Original line number Diff line number Diff line
@@ -170,6 +170,9 @@ static int msm_lsm_ioctl(struct snd_pcm_substream *substream, 
				 */

				rc = -EFAULT;

			} else {

				if (!access_ok(VERIFY_READ, user,

					sizeof(struct snd_lsm_event_status)))

					rc = -EFAULT;

				if (user->payload_size <

				    event_status->payload_size) {

					pr_debug("%s: provided %dbytes isn't enough, needs %dbytes\n",