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Commit 36a05eca authored by David Dai's avatar David Dai
Browse files

msm: msm_bus: Add checks for kzalloc failures 



Add null pointer checks at places where kzalloc is called
to prevent potential null dereferences.

Change-Id: Ib4e4167b4e2d00c50ef6982039f26d59f83208f7
Signed-off-by: default avatarDavid Dai <daidavid1@codeaurora.org>
parent 4a3d1ca8

drivers/soc/qcom/msm_bus/msm_bus_arb_rpmh.c

+5 −1
Original line number Original line Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0-only

// SPDX-License-Identifier: GPL-2.0-only

/*

/*

 * Copyright (c) 2014-2018, The Linux Foundation. All rights reserved.

 * Copyright (c) 2014-2019, The Linux Foundation. All rights reserved.

 */

 */

#include <linux/kernel.h>

#include <linux/kernel.h>

#include <linux/init.h>

#include <linux/init.h>
@@ -59,6 +59,8 @@ static void copy_remaining_nodes(struct list_head *edge_list, struct list_head 
		return;

		return;





	search_node = kzalloc(sizeof(struct bus_search_type), GFP_KERNEL);

	search_node = kzalloc(sizeof(struct bus_search_type), GFP_KERNEL);

	if (!search_node)

		return;

	INIT_LIST_HEAD(&search_node->node_list);

	INIT_LIST_HEAD(&search_node->node_list);

	list_splice_init(edge_list, traverse_list);

	list_splice_init(edge_list, traverse_list);

	list_splice_init(traverse_list, &search_node->node_list);

	list_splice_init(traverse_list, &search_node->node_list);
@@ -450,6 +452,8 @@ static int getpath(struct device *src_dev, int dest, const char *cl_name) 
		/* Keep tabs of the previous search list */

		/* Keep tabs of the previous search list */

		search_node = kzalloc(sizeof(struct bus_search_type),

		search_node = kzalloc(sizeof(struct bus_search_type),

				 GFP_KERNEL);

				 GFP_KERNEL);

		if (!search_node)

			return -ENOMEM;

		INIT_LIST_HEAD(&search_node->node_list);

		INIT_LIST_HEAD(&search_node->node_list);

		list_splice_init(&traverse_list,

		list_splice_init(&traverse_list,

				 &search_node->node_list);

				 &search_node->node_list);