On Fri, Jul 14, 2017 at 2:25 AM, Arnd Bergmann <arnd@xxxxxxxx> wrote: > - return capable(CAP_SYS_ADMIN) ? : -EINVAL; > + return capable(CAP_SYS_ADMIN) ? 1 : -EINVAL; NAK. This takes unintentionally insane code and turns it intentionally insane. Any non-zero return is considered an error. The right fix is almost certainly to just return -EINVAL unconditionally. Linus