On 10/31/17 1:41 AM, Jiri Pirko wrote: >> >> If it is read-only, then attempts to set it from userspace should cause >> the command to fail. > > That breaks uapi. Consider existing userspace app sending garbage in > that bit and new kernel which randomly fails upon the garbage. >
It is called syzkaller. The kernel should always validate userspace config including checking that unused bits are 0. So you are saying tc has never done that checking and just ignored bits that are not valid?
