On Thu, Apr 20, 2006 at 04:17:28PM +0200, Bodo Stroesser wrote:
> Shouldn't 'len' better be the number of bits in the mask than the number of
> chars?
Yup.
> OTOH, I think UML shouldn't send the entire mask, but relevant part only.
> The missing end is filled with 0xff by host anyway. So it would be
> enough to send the mask up to the highest bit representing a
> syscall, that needs to be executed by host. (currently, that is
> __NR_gettimeofday). If UML would do so, no more problem results from
> UML having a higher NR_syscall than the host (as long as the new
> syscalls are to be intercepted and executed by UML)
Yup, that was part of the intent of sending in the mask length.
> A greater problem might be a process in UML, that calls an invalid syscall
> number. AFAICS syscall number (orig_eax) isn't checked before it is
> used in do_syscall_trace to address syscall_mask. This might result
> in a crash.
Yeah, this needs fixing.
Heff
-
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]
