On Fri, Aug 30, 2019 at 02:37:07PM +0900, Austin Kim wrote: > In case kernel stack variable is not initialized properly, > there is a risk of kernel information disclosure. > > So, initialize 'char label[]' array with null characters. Can you describe the information disclosure vector here? I can't see any, mostly because this is the "set label" function and that doesn't return anything to userspace. We also zero the on-disk label before we copy the user label into it, so I don't see that anything can leak onto disk, either... Cheers, Dave. -- Dave Chinner david@xxxxxxxxxxxxx
