QBT1000: check for null pointer before copying command



A null command buffer will cause a null pointer crash.
Check for it

Change-Id: I37a0c8b9fe2c144fb4e75036509bf7ec07604ea7
Signed-off-by: Lior Barenboim <liorb@codeaurora.org>

parent 624c9138

drivers/soc/qcom/qbt1000.c

+7 −0

Original line number	Diff line number	Diff line
		@@ -913,6 +913,13 @@ static long qbt1000_ioctl(struct file *file, unsigned cmd, unsigned long arg)
		if (rc != 0)
		goto end;

		if (!aligned_cmd) {
		dev_err(drvdata->dev, "%s: Null command buffer\n",
		__func__);
		rc = -EINVAL;
		goto end;
		}

		rc = copy_from_user(aligned_cmd, (void __user *)tzcmd.req_buf,
		tzcmd.req_buf_len);
		if (rc != 0) {