Re: Fwd: brk randomization breaks columns

From: Pavel Machek
Date: Mon Feb 04 2008 - 14:52:46 EST


> >
> > > I still don't seem to fully understand what is happening here --
> > > aparently this is triggerable only with old programs linked against
> > > libc.so.5, and I am not able to trigger it with my trivial program when
> > > I link it against old libc.so.5, which just basically does brk() and
> > > checks whether /proc/<pid>/maps are OK. Seems to me that (at least
> > > certain versions) of libc.so.5 (wrongly) assume that end of the bss is
> > > the start of the heap, but I will try to investigate it more.
>
> I think I am getting the some problem with brand new binaries produced
> by myself :(
>
> Look at this report I posted days ago:
>
> http://marc.info/?l=linux-kernel&m=120169141603789&w=2

Your crash is in kernel, no? Anyway, I can workaround mine by
disabling randomization...
Pavel
--
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