lkml.org 
[lkml]   [2012]   [Jan]   [23]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: Compat 32-bit syscall entry from 64-bit task!? [was: Re: [RFC,PATCH 1/2] seccomp_filters: system call filtering using BPF]
On 01/18, Chris Evans wrote:
>
> Thanks, Oleg. Seems like this would be a nice change to have. As we
> can see, people do use ptrace() as a security technology.

OK, I'll send it.

> With this in place, you can also (where possible) set up the tracee
> with PR_SET_PDEATHSIG==SIGKILL. And then, you have defences again
> either of the tracer or tracee dying from a stray SIGKILL.

This can only help if the tracer is the natural parent, is it enough?

Indan suggested PTRACE_O_SIGKILL_ON_DEATH, perhaps it makes sense.

Oleg.



\
 
 \ /
  Last update: 2012-01-23 18:07    [W:0.670 / U:0.012 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site