* Geert Uytterhoeven <[EMAIL PROTECTED]> wrote:
> On Wed, 6 Feb 2008, Ingo Molnar wrote:
> > @@ -541,6 +541,18 @@ config ELF_CORE
> > help
> > Enable support for generating core dumps. Disabling saves about 4k.
> >
> > +config COMPAT_BRK
> > + bool "Disable heap randomization"
> > + default y
> > + help
> > + Randomizing heap placement makes heap exploits harder, but it
> > + also breaks ancient binaries (including anything libc5 based).
> > + This option changes the bootup default to heap randomization
> > + disabled, and can be overriden runtime by setting
> > + /proc/sys/kernel/randomize_va_space to 2.
> > +
> > + On non-ancient distros (post-2000 ones) Y is usually a safe choice.
>
> Somehow my belly feeling tells me something is wrong with this description...
>
> Ah, a negative option (Y -> disable). So Y is always safe.
>
> `non-ancient distros' really means `recent distros', and if you have
> one, then _N_ should be a safe choice, too?
yeah, you are right :-) I'll fix this.
btw., "non-ancient distros" does not just mean "recent distros", it
really means "just about any distro you picked up in the past 10 years".
You'd have to go out on a limb to find something historic (or keep
copying /lib/libc5 binaries to new distros like Pavel did) to still have
this particular libc5 assumption/breakage. [ Or at least so i hope =B-)]
Ingo
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