diff --git a/drivers/input/touchscreen/synaptics_i2c_rmi4.c b/drivers/input/touchscreen/synaptics_i2c_rmi4.c
index 8922fd3..b1d9244 100644
--- a/drivers/input/touchscreen/synaptics_i2c_rmi4.c
+++ b/drivers/input/touchscreen/synaptics_i2c_rmi4.c
@@ -2299,6 +2299,12 @@
 	rmi4_data->max_touch_width = MAX_F11_TOUCH_WIDTH;
 
 	fhandler->intr_reg_num = (intr_count + 7) / 8;
+	if (fhandler->intr_reg_num >= MAX_INTR_REGISTERS) {
+		fhandler->intr_reg_num = 0;
+		fhandler->num_of_data_sources = 0;
+		fhandler->intr_mask = 0;
+		return -EINVAL;
+	}
 	if (fhandler->intr_reg_num != 0)
 		fhandler->intr_reg_num -= 1;
 
@@ -2605,6 +2611,13 @@
 			rmi4_data->num_of_tx);
 
 	fhandler->intr_reg_num = (intr_count + 7) / 8;
+	if (fhandler->intr_reg_num >= MAX_INTR_REGISTERS) {
+		fhandler->intr_reg_num = 0;
+		fhandler->num_of_data_sources = 0;
+		fhandler->intr_mask = 0;
+		retval = -EINVAL;
+		goto free_function_handler_mem;
+	}
 	if (fhandler->intr_reg_num != 0)
 		fhandler->intr_reg_num -= 1;
 
@@ -2748,6 +2761,13 @@
 	fhandler->num_of_data_sources = fd->intr_src_count;
 
 	fhandler->intr_reg_num = (intr_count + 7) / 8;
+	if (fhandler->intr_reg_num >= MAX_INTR_REGISTERS) {
+		fhandler->intr_reg_num = 0;
+		fhandler->num_of_data_sources = 0;
+		fhandler->intr_mask = 0;
+		retval = -EINVAL;
+		goto error_exit;
+	}
 	if (fhandler->intr_reg_num != 0)
 		fhandler->intr_reg_num -= 1;
 
@@ -3096,7 +3116,8 @@
 	dev_dbg(&rmi4_data->i2c_client->dev,
 			"%s: Number of interrupt registers = %d\n",
 			__func__, rmi4_data->num_of_intr_regs);
-
+	if (rmi4_data->num_of_intr_regs >= MAX_INTR_REGISTERS)
+		return -EINVAL;
 	memset(rmi4_data->intr_mask, 0x00, sizeof(rmi4_data->intr_mask));
 
 	/*
diff --git a/drivers/media/platform/msm/camera_v2/pproc/cpp/msm_cpp.c b/drivers/media/platform/msm/camera_v2/pproc/cpp/msm_cpp.c
index 6103e70..11755c3 100644
--- a/drivers/media/platform/msm/camera_v2/pproc/cpp/msm_cpp.c
+++ b/drivers/media/platform/msm/camera_v2/pproc/cpp/msm_cpp.c
@@ -1824,6 +1824,8 @@
 			/* More or equal bufs as Input buffer */
 			num_output_bufs = new_frame->batch_info.batch_size;
 		}
+		if (num_output_bufs > MSM_OUTPUT_BUF_CNT)
+			return 0;
 		for (i = 0; i < num_output_bufs; i++) {
 			new_frame->output_buffer_info[i].index =
 				buff_mgr_info->user_buf.buf_idx[i];
diff --git a/drivers/media/platform/msm/camera_v2/sensor/cci/msm_cci.c b/drivers/media/platform/msm/camera_v2/sensor/cci/msm_cci.c
index 5c169f0..0d472ea 100644
--- a/drivers/media/platform/msm/camera_v2/sensor/cci/msm_cci.c
+++ b/drivers/media/platform/msm/camera_v2/sensor/cci/msm_cci.c
@@ -54,8 +54,15 @@
 	enum cci_i2c_master_t master = c_ctrl->cci_info->cci_i2c_master;
 	enum i2c_freq_mode_t i2c_freq_mode = c_ctrl->cci_info->i2c_freq_mode;
 
+	if ((i2c_freq_mode >= I2C_MAX_MODES) || (i2c_freq_mode < 0)) {
+		pr_err("%s:%d invalid i2c_freq_mode %d\n",
+			__func__, __LINE__, i2c_freq_mode);
+		return;
+	}
+
 	if (cci_dev->master_clk_init[master])
 		return;
+
 	clk_params = &cci_dev->cci_clk_params[i2c_freq_mode];
 
 	if (MASTER_0 == master) {
diff --git a/drivers/media/platform/msm/camera_v2/sensor/flash/msm_flash.c b/drivers/media/platform/msm/camera_v2/sensor/flash/msm_flash.c
index aaae13d..4a13ef8 100644
--- a/drivers/media/platform/msm/camera_v2/sensor/flash/msm_flash.c
+++ b/drivers/media/platform/msm/camera_v2/sensor/flash/msm_flash.c
@@ -498,6 +498,42 @@
 	return 0;
 }
 
+#ifdef CONFIG_COMPAT
+static int32_t msm_flash_init_prepare(
+	struct msm_flash_ctrl_t *flash_ctrl,
+	struct msm_flash_cfg_data_t *flash_data)
+{
+	return msm_flash_init(flash_ctrl, flash_data);
+}
+#else
+static int32_t msm_flash_init_prepare(
+	struct msm_flash_ctrl_t *flash_ctrl,
+	struct msm_flash_cfg_data_t *flash_data)
+{
+	struct msm_flash_cfg_data_t flash_data_k;
+	struct msm_flash_init_info_t flash_init_info;
+	int32_t i = 0;
+
+	flash_data_k.cfg_type = flash_data->cfg_type;
+	for (i = 0; i < MAX_LED_TRIGGERS; i++) {
+		flash_data_k.flash_current[i] =
+			flash_data->flash_current[i];
+		flash_data_k.flash_duration[i] =
+			flash_data->flash_duration[i];
+	}
+
+	flash_data_k.cfg.flash_init_info = &flash_init_info;
+	if (copy_from_user(&flash_init_info,
+			   (void *)(flash_data->cfg.flash_init_info),
+			   sizeof(struct msm_flash_init_info_t))) {
+		pr_err("%s copy_from_user failed %d\n",
+		       __func__, __LINE__);
+		return -EFAULT;
+	}
+	return msm_flash_init(flash_ctrl, &flash_data_k);
+}
+#endif
+
 static int32_t msm_flash_low(
 	struct msm_flash_ctrl_t *flash_ctrl,
 	struct msm_flash_cfg_data_t *flash_data)
@@ -604,7 +640,7 @@
 
 	switch (flash_data->cfg_type) {
 	case CFG_FLASH_INIT:
-		rc = msm_flash_init(flash_ctrl, flash_data);
+		rc = msm_flash_init_prepare(flash_ctrl, flash_data);
 		break;
 	case CFG_FLASH_RELEASE:
 		if (flash_ctrl->flash_state == MSM_CAMERA_FLASH_INIT)
diff --git a/drivers/misc/qseecom.c b/drivers/misc/qseecom.c
index 6e7ca47..d722321 100644
--- a/drivers/misc/qseecom.c
+++ b/drivers/misc/qseecom.c
@@ -5131,7 +5131,11 @@
 			break;
 		}
 		pr_debug("SET_MEM_PARAM: qseecom addr = 0x%pK\n", data);
+		mutex_lock(&app_access_lock);
+		atomic_inc(&data->ioctl_count);
 		ret = qseecom_set_client_mem_param(data, argp);
+		atomic_dec(&data->ioctl_count);
+		mutex_unlock(&app_access_lock);
 		if (ret)
 			pr_err("failed Qqseecom_set_mem_param request: %d\n",
 								ret);
diff --git a/drivers/platform/msm/ipa/ipa_intf.c b/drivers/platform/msm/ipa/ipa_intf.c
index 535ea84..d76bf64 100644
--- a/drivers/platform/msm/ipa/ipa_intf.c
+++ b/drivers/platform/msm/ipa/ipa_intf.c
@@ -265,6 +265,14 @@
 	mutex_lock(&ipa_ctx->lock);
 	list_for_each_entry(entry, &ipa_ctx->intf_list, link) {
 		if (!strncmp(entry->name, tx->name, IPA_RESOURCE_NAME_MAX)) {
+			/* add the entry check */
+			if (entry->num_tx_props != tx->num_tx_props) {
+				IPAERR("invalid entry number(%u %u)\n",
+					entry->num_tx_props,
+						tx->num_tx_props);
+				mutex_unlock(&ipa_ctx->lock);
+				return result;
+			}
 			memcpy(tx->tx, entry->tx, entry->num_tx_props *
 			       sizeof(struct ipa_ioc_tx_intf_prop));
 			result = 0;
@@ -298,6 +306,14 @@
 	mutex_lock(&ipa_ctx->lock);
 	list_for_each_entry(entry, &ipa_ctx->intf_list, link) {
 		if (!strncmp(entry->name, rx->name, IPA_RESOURCE_NAME_MAX)) {
+			/* add the entry check */
+			if (entry->num_rx_props != rx->num_rx_props) {
+				IPAERR("invalid entry number(%u %u)\n",
+					entry->num_rx_props,
+						rx->num_rx_props);
+				mutex_unlock(&ipa_ctx->lock);
+				return result;
+			}
 			memcpy(rx->rx, entry->rx, entry->num_rx_props *
 					sizeof(struct ipa_ioc_rx_intf_prop));
 			result = 0;
@@ -331,6 +347,14 @@
 	mutex_lock(&ipa_ctx->lock);
 	list_for_each_entry(entry, &ipa_ctx->intf_list, link) {
 		if (!strcmp(entry->name, ext->name)) {
+			/* add the entry check */
+			if (entry->num_ext_props != ext->num_ext_props) {
+				IPAERR("invalid entry number(%u %u)\n",
+					entry->num_ext_props,
+						ext->num_ext_props);
+				mutex_unlock(&ipa_ctx->lock);
+				return result;
+			}
 			memcpy(ext->ext, entry->ext, entry->num_ext_props *
 					sizeof(struct ipa_ioc_ext_intf_prop));
 			result = 0;
diff --git a/drivers/soc/qcom/qdsp6v2/voice_svc.c b/drivers/soc/qcom/qdsp6v2/voice_svc.c
index 10f71b8..fe54589 100644
--- a/drivers/soc/qcom/qdsp6v2/voice_svc.c
+++ b/drivers/soc/qcom/qdsp6v2/voice_svc.c
@@ -368,6 +368,9 @@
 	struct voice_svc_prvt *prtd;
 	struct voice_svc_write_msg *data = NULL;
 	uint32_t cmd;
+	struct voice_svc_register *register_data = NULL;
+	struct voice_svc_cmd_request *request_data = NULL;
+	uint32_t request_payload_size;
 
 	pr_debug("%s\n", __func__);
 
@@ -416,12 +419,19 @@
 		 */
 		if (count == (sizeof(struct voice_svc_write_msg) +
 			      sizeof(struct voice_svc_register))) {
-			ret = process_reg_cmd(
-			(struct voice_svc_register *)data->payload, prtd);
+			register_data =
+				(struct voice_svc_register *)data->payload;
+			if (register_data == NULL) {
+				pr_err("%s: register data is NULL", __func__);
+				ret = -EINVAL;
+				goto done;
+			}
+			ret = process_reg_cmd(register_data, prtd);
 			if (!ret)
 				ret = count;
 		} else {
-			pr_err("%s: invalid payload size\n", __func__);
+			pr_err("%s: invalid data payload size for register command\n",
+				__func__);
 			ret = -EINVAL;
 			goto done;
 		}
@@ -430,19 +440,40 @@
 		/*
 		 * Check that count reflects the expected size to ensure
 		 * sufficient memory was allocated. Since voice_svc_cmd_request
-		 * has a variable size, check the minimum value count must be.
+		 * has a variable size, check the minimum value count must be to
+		 * parse the message request then check the minimum size to hold
+		 * the payload of the message request.
 		 */
 		if (count >= (sizeof(struct voice_svc_write_msg) +
 			      sizeof(struct voice_svc_cmd_request))) {
-		ret = voice_svc_send_req(
-			(struct voice_svc_cmd_request *)data->payload, prtd);
-		if (!ret)
-			ret = count;
-	} else {
-		pr_err("%s: invalid payload size\n", __func__);
-		ret = -EINVAL;
-		goto done;
-	}
+			request_data =
+				(struct voice_svc_cmd_request *)data->payload;
+			if (request_data == NULL) {
+				pr_err("%s: request data is NULL", __func__);
+				ret = -EINVAL;
+				goto done;
+			}
+
+			request_payload_size = request_data->payload_size;
+
+			if (count >= (sizeof(struct voice_svc_write_msg) +
+				      sizeof(struct voice_svc_cmd_request) +
+				      request_payload_size)) {
+				ret = voice_svc_send_req(request_data, prtd);
+				if (!ret)
+					ret = count;
+			} else {
+				pr_err("%s: invalid request payload size\n",
+					__func__);
+				ret = -EINVAL;
+				goto done;
+			}
+		} else {
+			pr_err("%s: invalid data payload size for request command\n",
+				__func__);
+			ret = -EINVAL;
+			goto done;
+		}
 		break;
 	default:
 		pr_debug("%s: Invalid command: %u\n", __func__, cmd);
diff --git a/drivers/staging/qcacld-2.0/CORE/SME/src/oemData/oemDataApi.c b/drivers/staging/qcacld-2.0/CORE/SME/src/oemData/oemDataApi.c
index 9b5e56c..1f796a2 100644
--- a/drivers/staging/qcacld-2.0/CORE/SME/src/oemData/oemDataApi.c
+++ b/drivers/staging/qcacld-2.0/CORE/SME/src/oemData/oemDataApi.c
@@ -208,7 +208,6 @@
 {
     eHalStatus status = eHAL_STATUS_SUCCESS;
     tSirOemDataReq* pMsg;
-    tANI_U16 msgLen;
     tCsrRoamSession *pSession;
 
     smsLog(pMac, LOGW, "OEM_DATA: entering Function %s", __func__);
@@ -225,9 +224,8 @@
         return eHAL_STATUS_FAILURE;
     }
 
-    msgLen = (uint16_t) (sizeof(*pMsg) + pOemDataReq->data_len);
     pMsg->messageType = pal_cpu_to_be16((tANI_U16)eWNI_SME_OEM_DATA_REQ);
-    pMsg->messageLen = pal_cpu_to_be16(msgLen);
+    pMsg->messageLen = pal_cpu_to_be16((uint16_t) sizeof(*pMsg));
     vos_mem_copy(pMsg->selfMacAddr, pSession->selfMacAddr, sizeof(tSirMacAddr) );
     pMsg->data_len = pOemDataReq->data_len;
     /* Incoming buffer ptr saved, set to null to avoid free by caller */
diff --git a/drivers/video/msm/mdss/mdss_fb.c b/drivers/video/msm/mdss/mdss_fb.c
index 4147e32..0160ac5 100644
--- a/drivers/video/msm/mdss/mdss_fb.c
+++ b/drivers/video/msm/mdss/mdss_fb.c
@@ -1722,7 +1722,7 @@
 			ion_unmap_iommu(mfd->fb_ion_client, mfd->fb_ion_handle,
 					mfd->mdp.fb_mem_get_iommu_domain(), 0);
 		}
-		goto fb_mmap_failed;
+		goto err_put;
 	}
 
 	pr_debug("alloc 0x%zuB vaddr = %pK (%pa iova) for fb%d\n", fb_size,
@@ -1734,8 +1734,12 @@
 
 	return rc;
 
+err_put:
+	dma_buf_put(mfd->fbmem_buf);
 fb_mmap_failed:
 	ion_free(mfd->fb_ion_client, mfd->fb_ion_handle);
+	mfd->fb_ion_handle = NULL;
+	mfd->fbmem_buf = NULL;
 	return rc;
 }
 
diff --git a/drivers/video/msm/mdss/mdss_mdp_overlay.c b/drivers/video/msm/mdss/mdss_mdp_overlay.c
index c91f55e..bd67a1c 100644
--- a/drivers/video/msm/mdss/mdss_mdp_overlay.c
+++ b/drivers/video/msm/mdss/mdss_mdp_overlay.c
@@ -3327,12 +3327,21 @@
 		start_y = 0;
 	}
 
+	if ((img->width > mdata->max_cursor_size) ||
+		(img->height > mdata->max_cursor_size) ||
+		(img->depth != 32) || (start_x >= xres) ||
+		(start_y >= yres)) {
+		pr_err("Invalid cursor image coordinates\n");
+		ret = -EINVAL;
+		goto done;
+	}
+
 	roi.w = min(xres - start_x, img->width - roi.x);
 	roi.h = min(yres - start_y, img->height - roi.y);
 
 	if ((roi.w > mdata->max_cursor_size) ||
-		(roi.h > mdata->max_cursor_size) ||
-		(img->depth != 32) || (start_x >= xres) || (start_y >= yres)) {
+		(roi.h > mdata->max_cursor_size)) {
+		pr_err("Invalid cursor ROI size\n");
 		ret = -EINVAL;
 		goto done;
 	}
@@ -3363,12 +3372,6 @@
 	req->transp_mask = img->bg_color & ~(0xff << var->transp.offset);
 
 	if (mfd->cursor_buf && (cursor->set & FB_CUR_SETIMAGE)) {
-		if (img->width * img->height * 4 > cursor_frame_size) {
-			pr_err("cursor image size is too large\n");
-			ret = -EINVAL;
-			goto done;
-		}
-
 		ret = copy_from_user(mfd->cursor_buf, img->data,
 				     img->width * img->height * 4);
 		if (ret) {
diff --git a/include/media/msmb_pproc.h b/include/media/msmb_pproc.h
index 0e3cb87..7c66862 100644
--- a/include/media/msmb_pproc.h
+++ b/include/media/msmb_pproc.h
@@ -22,6 +22,7 @@
 #define MSM_CPP_MAX_FRAME_LENGTH 4096
 #define MSM_CPP_MAX_FW_NAME_LEN 32
 #define MAX_FREQ_TBL 10
+#define MSM_OUTPUT_BUF_CNT 8
 
 enum msm_cpp_frame_type {
 	MSM_CPP_OFFLINE_FRAME,
@@ -211,7 +212,7 @@
 	uint32_t feature_mask;
 	uint8_t we_disable;
 	struct msm_cpp_buffer_info_t input_buffer_info;
-	struct msm_cpp_buffer_info_t output_buffer_info[8];
+	struct msm_cpp_buffer_info_t output_buffer_info[MSM_OUTPUT_BUF_CNT];
 	struct msm_cpp_buffer_info_t duplicate_buffer_info;
 	struct msm_cpp_buffer_info_t tnr_scratch_buffer_info[2];
 	uint32_t reserved;
diff --git a/sound/soc/msm/qdsp6v2/msm-lsm-client.c b/sound/soc/msm/qdsp6v2/msm-lsm-client.c
index 3193a86..6f25512 100644
--- a/sound/soc/msm/qdsp6v2/msm-lsm-client.c
+++ b/sound/soc/msm/qdsp6v2/msm-lsm-client.c
@@ -84,6 +84,7 @@
 	atomic_t buf_count;
 	atomic_t read_abort;
 	wait_queue_head_t period_wait;
+	struct mutex lsm_api_lock;
 	int appl_cnt;
 	int dma_write;
 };
@@ -861,10 +862,18 @@
 	case SNDRV_LSM_EVENT_STATUS:
 		dev_dbg(rtd->dev, "%s: Get event status\n", __func__);
 		atomic_set(&prtd->event_wait_stop, 0);
+
+		/*
+		 * Release the api lock before wait to allow
+		 * other IOCTLs to be invoked while waiting
+		 * for event
+		 */
+		mutex_unlock(&prtd->lsm_api_lock);
 		rc = wait_event_freezable(prtd->event_wait,
 				(cmpxchg(&prtd->event_avail, 1, 0) ||
 				 (xchg = atomic_cmpxchg(&prtd->event_wait_stop,
 							1, 0))));
+		mutex_lock(&prtd->lsm_api_lock);
 		dev_dbg(rtd->dev, "%s: wait_event_freezable %d event_wait_stop %d\n",
 			 __func__, rc, xchg);
 		if (!rc && !xchg) {
@@ -1116,6 +1125,8 @@
 	rtd = substream->private_data;
 	prtd = runtime->private_data;
 
+	mutex_lock(&prtd->lsm_api_lock);
+
 	switch (cmd) {
 	case SNDRV_LSM_EVENT_STATUS: {
 		struct snd_lsm_event_status *user = NULL, userarg32;
@@ -1123,7 +1134,8 @@
 		if (copy_from_user(&userarg32, arg, sizeof(userarg32))) {
 			dev_err(rtd->dev, "%s: err copyuser ioctl %s\n",
 				__func__, "SNDRV_LSM_EVENT_STATUS");
-			return -EFAULT;
+			err = -EFAULT;
+			goto done;
 		}
 
 		if (userarg32.payload_size >
@@ -1131,7 +1143,8 @@
 			pr_err("%s: payload_size %d is invalid, max allowed = %d\n",
 				__func__, userarg32.payload_size,
 				LISTEN_MAX_STATUS_PAYLOAD_SIZE);
-			return -EINVAL;
+			err = -EINVAL;
+			goto done;
 		}
 
 		size = sizeof(*user) + userarg32.payload_size;
@@ -1140,7 +1153,8 @@
 			dev_err(rtd->dev,
 				"%s: Allocation failed event status size %d\n",
 				__func__, size);
-			return -EFAULT;
+			err = -EFAULT;
+			goto done;
 		} else {
 			cmd = SNDRV_LSM_EVENT_STATUS;
 			user->payload_size = userarg32.payload_size;
@@ -1189,7 +1203,8 @@
 			dev_err(rtd->dev,
 				"%s: %s: not supported if using topology\n",
 				__func__, "REG_SND_MODEL_V2");
-			return -EINVAL;
+			err = -EINVAL;
+			goto done;
 		}
 
 		if (copy_from_user(&snd_modelv232, arg,
@@ -1230,7 +1245,8 @@
 			dev_err(rtd->dev,
 				"%s: %s: not supported if using topology\n",
 				__func__, "SET_PARAMS_32");
-			return -EINVAL;
+			err = -EINVAL;
+			goto done;
 		}
 
 		if (copy_from_user(&det_params32, arg,
@@ -1273,7 +1289,8 @@
 			dev_err(rtd->dev,
 				"%s: %s: not supported if not using topology\n",
 				__func__, "SET_MODULE_PARAMS_32");
-			return -EINVAL;
+			err = -EINVAL;
+			goto done;
 		}
 
 		if (copy_from_user(&p_data_32, arg,
@@ -1282,7 +1299,8 @@
 				"%s: %s: copy_from_user failed, size = %zd\n",
 				__func__, "SET_MODULE_PARAMS_32",
 				sizeof(p_data_32));
-			return -EFAULT;
+			err = -EFAULT;
+			goto done;
 		}
 
 		p_data.params = compat_ptr(p_data_32.params);
@@ -1294,7 +1312,8 @@
 				"%s: %s: Invalid num_params %d\n",
 				__func__, "SET_MODULE_PARAMS_32",
 				p_data.num_params);
-			return -EINVAL;
+			err = -EINVAL;
+			goto done;
 		}
 
 		if (p_data.data_size !=
@@ -1303,7 +1322,8 @@
 				"%s: %s: Invalid size %d\n",
 				__func__, "SET_MODULE_PARAMS_32",
 				p_data.data_size);
-			return -EINVAL;
+			err = -EINVAL;
+			goto done;
 		}
 
 		p_size = sizeof(struct lsm_params_info_32) *
@@ -1314,7 +1334,8 @@
 			dev_err(rtd->dev,
 				"%s: no memory for params32, size = %zd\n",
 				__func__, p_size);
-			return -ENOMEM;
+			err = -ENOMEM;
+			goto done;
 		}
 
 		p_size = sizeof(struct lsm_params_info) * p_data.num_params;
@@ -1324,7 +1345,8 @@
 				"%s: no memory for params, size = %zd\n",
 				__func__, p_size);
 			kfree(params32);
-			return -ENOMEM;
+			err = -ENOMEM;
+			goto done;
 		}
 
 		if (copy_from_user(params32, p_data.params,
@@ -1334,7 +1356,8 @@
 				__func__, "params32", p_data.data_size);
 			kfree(params32);
 			kfree(params);
-			return -EFAULT;
+			err = -EFAULT;
+			goto done;
 		}
 
 		p_info_32 = (struct lsm_params_info_32 *) params32;
@@ -1377,6 +1400,8 @@
 		err = msm_lsm_ioctl_shared(substream, cmd, arg);
 		break;
 	}
+done:
+	mutex_unlock(&prtd->lsm_api_lock);
 	return err;
 }
 #else
@@ -1401,6 +1426,7 @@
 	prtd = runtime->private_data;
 	rtd = substream->private_data;
 
+	mutex_lock(&prtd->lsm_api_lock);
 	switch (cmd) {
 	case SNDRV_LSM_REG_SND_MODEL_V2: {
 		struct snd_lsm_sound_model_v2 snd_model_v2;
@@ -1409,7 +1435,8 @@
 			dev_err(rtd->dev,
 				"%s: %s: not supported if using topology\n",
 				__func__, "REG_SND_MODEL_V2");
-			return -EINVAL;
+			err = -EINVAL;
+			goto done;
 		}
 
 		if (copy_from_user(&snd_model_v2, arg, sizeof(snd_model_v2))) {
@@ -1426,7 +1453,7 @@
 			dev_err(rtd->dev,
 				"%s REG_SND_MODEL failed err %d\n",
 				__func__, err);
-		return err;
+		goto done;
 		}
 		break;
 	case SNDRV_LSM_SET_PARAMS: {
@@ -1436,7 +1463,8 @@
 			dev_err(rtd->dev,
 				"%s: %s: not supported if using topology\n",
 				__func__, "SET_PARAMS");
-			return -EINVAL;
+			err = -EINVAL;
+			goto done;
 		}
 
 		pr_debug("%s: SNDRV_LSM_SET_PARAMS\n", __func__);
@@ -1457,7 +1485,8 @@
 			dev_err(rtd->dev,
 				"%s: LSM_SET_PARAMS failed, err %d\n",
 				__func__, err);
-		return err;
+
+		goto done;
 	}
 
 	case SNDRV_LSM_SET_MODULE_PARAMS: {
@@ -1469,7 +1498,8 @@
 			dev_err(rtd->dev,
 				"%s: %s: not supported if not using topology\n",
 				__func__, "SET_MODULE_PARAMS");
-			return -EINVAL;
+			err = -EINVAL;
+			goto done;
 		}
 
 		if (copy_from_user(&p_data, arg,
@@ -1477,7 +1507,8 @@
 			dev_err(rtd->dev,
 				"%s: %s: copy_from_user failed, size = %zd\n",
 				__func__, "p_data", sizeof(p_data));
-			return -EFAULT;
+			err = -EFAULT;
+			goto done;
 		}
 
 		if (p_data.num_params > LSM_PARAMS_MAX) {
@@ -1485,7 +1516,8 @@
 				"%s: %s: Invalid num_params %d\n",
 				__func__, "SET_MODULE_PARAMS",
 				p_data.num_params);
-			return -EINVAL;
+			err = -EINVAL;
+			goto done;
 		}
 
 		p_size = p_data.num_params *
@@ -1496,7 +1528,8 @@
 				"%s: %s: Invalid size %zd\n",
 				__func__, "SET_MODULE_PARAMS", p_size);
 
-			return -EFAULT;
+			err = -EFAULT;
+			goto done;
 		}
 
 		params = kzalloc(p_size, GFP_KERNEL);
@@ -1504,7 +1537,8 @@
 			dev_err(rtd->dev,
 				"%s: no memory for params\n",
 				__func__);
-			return -ENOMEM;
+			err = -ENOMEM;
+			goto done;
 		}
 
 		if (copy_from_user(params, p_data.params,
@@ -1513,7 +1547,8 @@
 				"%s: %s: copy_from_user failed, size = %d\n",
 				__func__, "params", p_data.data_size);
 			kfree(params);
-			return -EFAULT;
+			err = -EFAULT;
+			goto done;
 		}
 
 		err = msm_lsm_process_params(substream, &p_data, params);
@@ -1533,7 +1568,8 @@
 			dev_err(rtd->dev,
 				"%s: err copyuser event_status\n",
 				__func__);
-			return -EFAULT;
+			err = -EFAULT;
+			goto done;
 		}
 
 		if (userarg.payload_size >
@@ -1541,7 +1577,8 @@
 			pr_err("%s: payload_size %d is invalid, max allowed = %d\n",
 				__func__, userarg.payload_size,
 				LISTEN_MAX_STATUS_PAYLOAD_SIZE);
-			return -EINVAL;
+			err = -EINVAL;
+			goto done;
 		}
 
 		size = sizeof(struct snd_lsm_event_status) +
@@ -1551,7 +1588,8 @@
 			dev_err(rtd->dev,
 				"%s: Allocation failed event status size %d\n",
 				__func__, size);
-			return -EFAULT;
+			err = -EFAULT;
+			goto done;
 		} else {
 			user->payload_size = userarg.payload_size;
 			err = msm_lsm_ioctl_shared(substream, cmd, user);
@@ -1574,12 +1612,14 @@
 		if (err)
 			dev_err(rtd->dev,
 				"%s: lsmevent failed %d", __func__, err);
-		return err;
+		goto done;
 	}
 	default:
 		err = msm_lsm_ioctl_shared(substream, cmd, arg);
 	break;
 	}
+done:
+	mutex_unlock(&prtd->lsm_api_lock);
 	return err;
 }
 
@@ -1596,6 +1636,7 @@
 		       __func__);
 		return -ENOMEM;
 	}
+	mutex_init(&prtd->lsm_api_lock);
 	spin_lock_init(&prtd->event_lock);
 	init_waitqueue_head(&prtd->event_wait);
 	init_waitqueue_head(&prtd->period_wait);
@@ -1721,6 +1762,7 @@
 	kfree(prtd->event_status);
 	prtd->event_status = NULL;
 	spin_unlock_irqrestore(&prtd->event_lock, flags);
+	mutex_destroy(&prtd->lsm_api_lock);
 	kfree(prtd);
 	runtime->private_data = NULL;
 
diff --git a/sound/soc/soc-compress.c b/sound/soc/soc-compress.c
index cb57d3e..1d112cc 100644
--- a/sound/soc/soc-compress.c
+++ b/sound/soc/soc-compress.c
@@ -569,6 +569,11 @@
 				cstream, &async_domain);
 			} else {
 				be_list[j++] = be;
+				if (j == DPCM_MAX_BE_USERS) {
+					dev_dbg(fe->dev,
+						"ASoC: MAX backend users!\n");
+					break;
+				}
 			}
 		}
 		for (i = 0; i < j; i++) {
diff --git a/sound/soc/soc-pcm.c b/sound/soc/soc-pcm.c
index 0e928a7..8206c3f 100644
--- a/sound/soc/soc-pcm.c
+++ b/sound/soc/soc-pcm.c
@@ -1845,6 +1845,10 @@
 							    dpcm, domain);
 		} else {
 			dpcm_async[i++] = dpcm;
+			if (i == DPCM_MAX_BE_USERS) {
+				dev_dbg(fe->dev, "ASoC: MAX backend users!\n");
+				break;
+			}
 		}
 	}