Merge "msm: kgsl: Fix buffer overflow while capturing memory entries"

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

/*

 * Copyright (c) 2012-2021, The Linux Foundation. All rights reserved.

 * Copyright (c) 2023 Qualcomm Innovation Center, Inc. All rights reserved.

 */

#include <linux/msm-bus.h>

	unsigned int type;

} __packed;

static int _save_mem_entries(int id, void *ptr, void *data)

{

	struct kgsl_mem_entry *entry = ptr;

	struct mem_entry *m = (struct mem_entry *) data;

	unsigned int index = id - 1;

	m[index].gpuaddr = entry->memdesc.gpuaddr;

	m[index].size = entry->memdesc.size;

	m[index].type = kgsl_memdesc_get_memtype(&entry->memdesc);

	return 0;

}

static size_t snapshot_capture_mem_list(struct kgsl_device *device,

		u8 *buf, size_t remain, void *priv)

{

	struct kgsl_snapshot_mem_list_v2 *header =

		(struct kgsl_snapshot_mem_list_v2 *)buf;

	int num_mem = 0;

	int ret = 0;

	unsigned int *data = (unsigned int *)(buf + sizeof(*header));

	int id, index = 0, ret = 0, num_mem = 0;

	struct kgsl_process_private *process = priv;

	struct mem_entry *m = (struct mem_entry *)(buf + sizeof(*header));

	struct kgsl_mem_entry *entry;

	/* we need a process to search! */

	if (process == NULL)

	 * Walk through the memory list and store the

	 * tuples(gpuaddr, size, memtype) in snapshot

	 */

	idr_for_each(&process->mem_idr, _save_mem_entries, data);

	idr_for_each_entry(&process->mem_idr, entry, id) {

		m[index].gpuaddr = entry->memdesc.gpuaddr;

		m[index].size = entry->memdesc.size;

		m[index].type = kgsl_memdesc_get_memtype(&entry->memdesc);

		index++;

	}

	ret = sizeof(*header) + (num_mem * sizeof(struct mem_entry));

out: