On Wed, Feb 22, 2012 at 3:38 PM, Andrew Lutomirski <luto@xxxxxxx> wrote: > I wonder if it would be helpful to change the semantics of RET_KILL > slightly. Rather than killing via do_exit, what if it killed via a > forcibly-fatal SIGSYS? That way, the parent's waitid() / SIGCHLD > would indicate CLD_KILLED with si_status == SIGSYS. The parent could > check that and report that the child was probably compromised. That would be better. But it is certainly a more complex code path, which makes the security weenies twitch. As to concrete issues, any "normal" path needs the changes that are maybe pending from Oleg to make it actually abort the syscall instead of completing it before getting to the signal path. -- To unsubscribe from this list: send the line "unsubscribe linux-doc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
