On Thu, Jul 17, 2014, at 19:34, Andy Lutomirski wrote: > On Thu, Jul 17, 2014 at 10:32 AM, Theodore Ts'o <[email protected]> wrote: > > On Thu, Jul 17, 2014 at 10:12:27AM -0700, Andy Lutomirski wrote: > >> > >> Unless I'm reading the code wrong, the prandom_reseed_late call can > >> happen after userspace is running. > > > > But there is also the prandom_reseed() call, which happens early. > > > > Right -- I missed that.
prandom_init is a core_initcall, prandom_reseed is a late_initcall. During initialization of the network stack we have calls to prandom_u32 before the late_initcall happens. That said, I think it is not that important to seed prandom with rdseed/rdrand as security relevant entropy extraction should always use get_random_bytes(), but we should do it nonetheless. Bye, Hannes -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
