On 01/23, Indan Zupancic wrote: > > On Sat, January 21, 2012 02:23, Jamie Lokier wrote: > > > > (Fwiw, two other issues with arch-independent ptrace have come up in this > > thread, which ought to be fairly easy to fix: > > - If tracer dies, tracee is free to continue running. For security > > tracers, and would be useful for strace as well, it would be good > > to have an option to SIGKILL the tracee if tracer dies. > > It should be easy to add a PTRACE_O_SIGKILL_ON_DEATH option. Yes, this looks simple. > > - Can't abort or change an unwanted syscall if the process receives > > SIGKILL as it's about to start a syscall (which will be its last).) > > This is very important for any syscall filtering/control via ptrace, otherwise > SIGKILL becomes a security problem. Oleg had a patch for that: OK, I'll send this patch after some testing. Although it looks trivial. Oleg. -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
