evie/android_kernel_oneplus_msm8998
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Merge "msm: sde: check buffer size before writing to user buffer"

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Linux Build Service Account 2018-04-03 14:37:29 -07:00 • committed by Gerrit - the friendly Code Review server
commit aae13ca421
1 changed files with 6 additions and 1 deletions
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7
drivers/media/platform/msm/sde/rotator/sde_rotator_debug.c
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@ -1,4 +1,4 @@
/* Copyright (c) 2015-2017, The Linux Foundation. All rights reserved.
/* Copyright (c) 2015-2018, 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
@ -482,6 +482,11 @@ static ssize_t sde_rot_evtlog_dump_read(struct file *file, char __user *buff,
if (__sde_rot_evtlog_dump_calc_range()) {
len = sde_rot_evtlog_dump_entry(evtlog_buf,
SDE_ROT_EVTLOG_BUF_MAX);
if (len < 0 || len > count) {
pr_err("len is more than the user buffer size\n");
return 0;
}
if (copy_to_user(buff, evtlog_buf, len))
return -EFAULT;
*ppos += len;