Re: [2.6] binfmt_elf bug (exposed by klibc).

[Jan-Benedict Glaw <jbglaw@lug-owl.de>]

[-- Attachment #1: Type: text/plain, Size: 1167 bytes --]

On Sat, 2005-10-08 00:42:58 +0200, Paweł Sikora <pluto@agmk.net> wrote:
> > Did somebody accidentally 
> > screw up some kernel code between 2.6.13 and 2.6.14?
> 
> I think kernel elf loader doesn't handle binaries without .bss.
> Earlier binutils (<2.16) emits zero-sized .data/.bss and problem
> wasn't exposed. Modern binutils doesn't emit useless zero-sized
> .data/.bss sections and kernel kills these binaries.

I had this problem at some time, too. This was when I started to redo
the uClibc port to vax-linux, which I started with a hand-crafted
assembly file. It also crashed upon execution, though I was sure the
program was technically okay.

However, I haven't looked up any paper or standard to verify either
position. So I don't know for *sure* if it's legal to omit these
(empty) sections.

MfG, JBG

-- 
Jan-Benedict Glaw       jbglaw@lug-owl.de    . +49-172-7608481             _ O _
"Eine Freie Meinung in  einem Freien Kopf    | Gegen Zensur | Gegen Krieg  _ _ O
 für einen Freien Staat voll Freier Bürger"  | im Internet! |   im Irak!   O O O
ret = do_actions((curr | FREE_SPEECH) & ~(NEW_COPYRIGHT_LAW | DRM | TCPA));

[-- Attachment #2: Digital signature --]
[-- Type: application/pgp-signature, Size: 189 bytes --]