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Commit 44ab3c21 authored by Yong Ding's avatar Yong Ding
Browse files

soc: qcom: hab: add the buffer size sanity check for exporting a buffer 



hab only supports multiple page size memory export, so the exported buffer
size must be N * PAGE_SIZE w/ N > 0.

Change-Id: I0b59639b3ca8842ccd49deb6b32f29f68da0b7a4
Signed-off-by: default avatarYao Jiang <yaojia@codeaurora.org>
Signed-off-by: default avatarYong Ding <yongding@codeaurora.org>
parent 08db65b8

drivers/soc/qcom/hab/hab_mimex.c

+3 −2
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) 2016-2020, The Linux Foundation. All rights reserved.

 * Copyright (c) 2016-2021, The Linux Foundation. All rights reserved.

 */

 */

#include "hab.h"

#include "hab.h"

#include "hab_grantable.h"

#include "hab_grantable.h"
@@ -241,7 +241,8 @@ int hab_mem_export(struct uhab_context *ctx, 
	int page_count;

	int page_count;

	int compressed = 0;

	int compressed = 0;





	if (!ctx || !param || !param->buffer)

	if (!ctx || !param || !param->buffer || !param->sizebytes

		|| ((param->sizebytes % PAGE_SIZE) != 0))

		return -EINVAL;

		return -EINVAL;





	vchan = hab_get_vchan_fromvcid(param->vcid, ctx, 0);

	vchan = hab_get_vchan_fromvcid(param->vcid, ctx, 0);