Re: select() for delay.

[Arjan van de Ven <arjan@infradead.org>]

On Mon, 2005-10-24 at 09:18 -0400, Steven Rostedt wrote:
> Hi Maduhu,
> 
> On Mon, 2005-10-24 at 16:25 +0530, madhu.subbaiah@wipro.com wrote:
> 
> > +                        put_user(sec, &tvp->tv_sec);
> > +                        put_user(usec, &tvp->tv_usec);
> 
> I won't comment on the rest of the patch, but this part is definitely
> wrong.  The pointer tvp is a user space address and once you dereference
> that pointer to get to tv_sec, you can have a fault, which might
> segfault the

&pointer->member  doesn't dereference the pointer, it just adds the
offset of "member" to the content of the pointer.