Re: [PATCH] Undo some of the pseudo-security madness

At Sat, 24 Feb 2007 10:40:51 +0100,
Florian Weimer wrote:
> 
> * Samium Gromoff:
> 
> > Lisp environments can produce standalone executables
> 
> If you've got a stand-alone executable, you don't need MAP_FIXED.  The
> ELF loader maps the program at a fixed address anyway (at least on
> i386 and x86_64, I haven't checked others).

Not so.

The thing is that the picture is of two pieces:

 - the executable
 - the unrelocatable lisp core (which is unrelocatable by the virtue
   of non-PIC code) which is mapped into the AS of the executable.

It is the latter which breaks, as its map can overlap with randomized
pieces of the executable (along with its libraries).

> AFAIK, PolyML has recently made the switch to stand-alone executables
> for this reason.

regards, Samium Gromoff
-
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/

---

• Follow-Ups:
  • Re: [PATCH] Undo some of the pseudo-security madness
    • From: Florian Weimer <[email protected]>

• References:
  • Re: [PATCH] Undo some of the pseudo-security madness
    • From: Samium Gromoff <[email protected]>
  • Re: [PATCH] Undo some of the pseudo-security madness
    • From: [email protected] (David Wagner)
  • Re: [PATCH] Undo some of the pseudo-security madness
    • From: Kyle Moffett <[email protected]>
  • Re: [PATCH] Undo some of the pseudo-security madness
    • From: Samium Gromoff <[email protected]>
  • Re: [PATCH] Undo some of the pseudo-security madness
    • From: Florian Weimer <[email protected]>

• Prev by Date: Re: [RFC][PATCH 0/3] VM throttling: avoid blocking occasional writers
• Next by Date: Re: [PATCH] Undo some of the pseudo-security madness
• Previous by thread: Re: [PATCH] Undo some of the pseudo-security madness
• Next by thread: Re: [PATCH] Undo some of the pseudo-security madness
• Index(es):
  • Date
  • Thread

[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]