On 2017년 03월 30일 19:38, Andy Shevchenko wrote:
> On Thu, Mar 30, 2017 at 12:15 PM, Chanwoo Choi <cw00.c...@samsung.com> wrote:
>> On 2017년 03월 30일 17:59, Andy Shevchenko wrote:
>>> On Thu, Mar 30, 2017 at 11:39 AM, Chanwoo Choi <cw00.c...@samsung.com>
>>> wrote:
>>>> This patch just uses the BIT() macro to make the code simple.
>>>
>>>> for (i = 0; i < edev->max_supported; i++) {
>>>> count += sprintf(buf + count, "%s=%d\n",
>>>> extcon_info[edev->supported_cable[i]].name,
>>>> - !!(edev->state & (1 << i)));
>>>> + !!(edev->state & BIT(i)));
>>>> }
>>>
>>> While change is okay, the above code is fragile. There is a potential
>>> buffer overflow.
>>
>> When extcon device is registered, extcon_dev_register() check a number of
>> supported external connectors. The maximum number of supported connectors
>> is 32. There is no buffer overflow.
>
> Is there any limit for name? No, there is not (const char *name).
> Though for now it is quite unlikely to have the issue.
If there is problem, I want to fix it.
I hope your more comment because I don't understand what you point out.
Did you mention the length of connector name? or buf?
>
> Feel free to proceed despite my comment.
>
--
Best Regards,
Chanwoo Choi
Samsung Electronics
