Messages in this thread | | | From | Andi Kleen <> | Subject | Re: How is Code in do_sys_settimeofday() safe in case of SMP and Nest Kernel Path? | Date | Tue, 3 Oct 2006 12:03:57 +0200 |
| |
On Tuesday 03 October 2006 10:03, Pavel Machek wrote: > On Sat 30-09-06 17:03:45, Andi Kleen wrote: > > > > > Did you get to the bottom of this yet? It looks like you're right, > > > and I suggest a seqlock might be a good option. > > > > It basically doesn't matter because nobody changes the time zone after boot. > > Attacker might; in a tight loop, to confuse time-of-day subsystem, or > maybe oops the kernel.
(a) only root change it. (b) the time of day subsystem never cares about the time zone. It is just a variable stored for user space.
-Andi - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |