11 jun 2005 kl. 01.34 skrev David Kastrup:
Richard Stallman <[EMAIL PROTECTED]> writes:
What I remember is that Red Hat enables a feature in Linux that (I
believe) uses the address space differently. unexelf.c doesn't
handle
it right.
I don't remember the name of the feature, but I'm sure other people
on this list remember the name.
exec_shield is one such feature, and newer kernels use something like,
uh, /proc/sys/vm/randomize_... (I don't remember the particular name
right now and don't have a Fedora active). The latter loaded
executables' memory segments into randomized locations to make buffer
overflow attacks less predictable.
exec_shield could be gotten around with using
setarch i386 make
and configure does that already IIRC. But the address space
randomization was prohibiting the dumping even with the setarch
command.
There is some info in etc/PROBLEMS, and some information here:
http://www.redhat.com/f/pdf/rhel/WHP0006US_Execshield.pdf
http://people.redhat.com/drepper/nonselsec.pdf
And if you search for Exec-shield here:
http://www.redhat.com/docs/manuals/enterprise/RHEL-3-Manual/release-
notes/as-x86/RELEASE-NOTES-U3-x86-en.html
They don't describe the new randomizing features though.
Jan D.
_______________________________________________
Emacs-devel mailing list
Emacs-devel@gnu.org
http://lists.gnu.org/mailman/listinfo/emacs-devel
