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Commit 27a23d8e authored by Yao Jiang's avatar Yao Jiang Committed by Gerrit - the friendly Code Review server
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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>
parent f2be2c18

drivers/soc/qcom/hab/hab_mimex.c

+3 −2
Original line number Diff line number Diff line 
/* Copyright (c) 2016-2019, The Linux Foundation. All rights reserved.

/* Copyright (c) 2016-2020, 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
@@ -249,7 +249,8 @@ int hab_mem_export(struct uhab_context *ctx, 
	int page_count;

	int compressed = 0;



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

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

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

		return -EINVAL;



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