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Commit 2503a05f authored by Pratap Nirujogi's avatar Pratap Nirujogi Committed by Gerrit - the friendly Code Review server
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ion: ensure valid start address 



Ensure valid start address to check for vaddress
bounds.

Change-Id: I02c0ce85d9a495880c133e66553b09159daa8f0c
Signed-off-by: default avatarPratap Nirujogi <pratapn@codeaurora.org>
parent 0d8bfae5

drivers/staging/android/ion/msm/msm_ion.c

+2 −2
Original line number Diff line number Diff line 
/* Copyright (c) 2011-2017, The Linux Foundation. All rights reserved.

/* Copyright (c) 2011-2018, 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
@@ -745,7 +745,7 @@ long msm_ion_custom_ioctl(struct ion_client *client, 
			data.flush_data.offset;

		end = start + data.flush_data.length;



		if (check_vaddr_bounds(start, end)) {

		if (start && check_vaddr_bounds(start, end)) {

			pr_err("%s: virtual address %pK is out of bounds\n",

			       __func__, data.flush_data.vaddr);

			ret = -EINVAL;