Hi Greg, On 11/8/19 9:49 PM, Greg Kroah-Hartman wrote: > On Fri, Nov 08, 2019 at 09:50:36PM +0000, Omer Shalev wrote: >> The cpai2 driver's mmap implementation wasn't properly check for all >> possible offset values. Given a huge offset value , the calculation >> start_offset + size can wrap around to a low value and pass the check > > I thought we checked that in the core of the kernel now, to keep all > drivers from not having to do this type of thing (as they obviously all > forgot to.) Why is this still needed here as well? Where is that checked in the core? I couldn't find anything, but I might have been looking in the wrong place. Regards, Hans > > thanks, > > greg k-h >
