Re: select() for delay.

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Mon, 2005-10-24 at 09:18 -0400, Steven Rostedt wrote:
> Hi Maduhu,
> 
> On Mon, 2005-10-24 at 16:25 +0530, [email protected] 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.


-
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/

[Index of Archives]     [Kernel Newbies]     [Netfilter]     [Bugtraq]     [Photo]     [Stuff]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]     [Linux Resources]
  Powered by Linux