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Commit ac44aac0 authored by Yao Jiang's avatar Yao Jiang
Browse files

platform: msm: resolve NULL pointer dereference issue 



Fix some null pointer dereference flaw and parameter not init issues.

change-Id: I0ed5f3f62c3794775bf97d353c4e50dd8ceb32da
Signed-off-by: default avatarYao Jiang <yaojia@codeaurora.org>
parent 6d92c598

drivers/gpu/drm/msm-hyp/msm_drv_hyp.c

+1 −1
Original line number Diff line number Diff line
@@ -318,7 +318,7 @@ static int _msm_parse_dt(struct device_node *node, u32 *client_id) 
	const char *client_id_str;



	client_id_str = of_get_property(node, "qcom,client-id", &len);

	if (len != CLIENT_ID_LEN_IN_CHARS) {

	if (!client_id_str || len != CLIENT_ID_LEN_IN_CHARS) {

		DBG("client_id_str len(%d) is invalid\n", len);

		ret = -EINVAL;

	} else {

drivers/hwmon/qpnp-adc-common.c

+2 −2
Original line number Diff line number Diff line 
/* Copyright (c) 2012-2016, 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
@@ -1726,7 +1726,7 @@ int qpnp_adc_get_revid_version(struct device *dev) 
	}



	revid_data = get_revid_data(revid_dev_node);

	if (IS_ERR(revid_data)) {

	if (IS_ERR_OR_NULL(revid_data)) {

		pr_debug("revid error rc = %ld\n", PTR_ERR(revid_data));

		return -EINVAL;

	}

drivers/net/wireless/cnss/cnss_pci.c

+1 −1
Original line number Diff line number Diff line
@@ -1481,8 +1481,8 @@ static int cnss_smmu_init(struct device *dev) 
					   penv->smmu_iova_start,

					   penv->smmu_iova_len);

	if (IS_ERR(mapping)) {

		pr_err("%s: create mapping failed, err = %d\n", __func__, ret);

		ret = PTR_ERR(mapping);

		pr_err("%s: create mapping failed, err = %d\n", __func__, ret);

		goto map_fail;

	}

mm/page_ext.c

+1 −1
Original line number Diff line number Diff line
@@ -187,7 +187,7 @@ struct page_ext *lookup_page_ext(struct page *page) 
	 * This check is also necessary for ensuring page poisoning

	 * works as expected when enabled

	 */

	if (!section->page_ext)

	if (!section || !section->page_ext)

		return NULL;

	return section->page_ext + pfn;

}