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
