On 1/11/19 10:10 PM, Sakari Ailus wrote:
> Hi Hans,
>
> On Fri, Jan 11, 2019 at 09:31:25AM +0100, Hans Verkuil wrote:
>> Three fixes for a bug introduced in 5.0.
>>
>> The last patch (Validate num_planes for debug messages) is also backported
>> to kernels >= 4.12 (the oldest kernel for which it applies cleanly).
>
> The surrounding lines of code have changed slightly over the years. The
> older kernels still suffer from the same problem as far as I see, so the
> backport is relevant down to 3.16 at least (but older kernels aren't
> supported anyway so I didn't check further). The problem was likely
> introduced by the big IOCTL handling patches long, long time ago. Huh.
>
I didn't plan on backporting this to older kernels. You have to be root
to enable this debugging, so it is not security bug.
Regards,
Hans
