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Merge "drm/msm/dsi-staging: Add length check before copying to user space"

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Linux Build Service Account 2019-08-08 09:34:48 -07:00 • committed by Gerrit - the friendly Code Review server
commit 8b46fe9a33
1 changed files with 7 additions and 1 deletions
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8
drivers/gpu/drm/msm/dsi-staging/dsi_ctrl.c
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2016-2018, The Linux Foundation. All rights reserved.
* Copyright (c) 2016-2019, 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
@ -123,6 +123,9 @@ static ssize_t debugfs_state_info_read(struct file *file,
dsi_ctrl->clk_info.link_clks.pixel_clk_rate,
dsi_ctrl->clk_info.link_clks.esc_clk_rate);
if (len > count)
len = count;
/* TODO: make sure that this does not exceed 4K */
if (copy_to_user(buff, buf, len)) {
kfree(buf);
@ -162,6 +165,9 @@ static ssize_t debugfs_reg_dump_read(struct file *file,
"Core clocks are not turned on, cannot read\n");
}
if (len > count)
len = count;
/* TODO: make sure that this does not exceed 4K */
if (copy_to_user(buff, buf, len)) {
kfree(buf);