Re: Bug#322309: Debian woody dpkg no longer works with recent linux kernel.

[Junichi Uekawa <dancer@netfort.gr.jp>]

Hi,

> > dpkg in Debian woody (3.0) is broken by recent linux kernels;
> > due to the following command changing behavior (mmap of 
> > zero-byte length):
> > 
> >   addr=mmap(NULL, 0, PROT_READ, MAP_SHARED, fd, 0);
> > 
> > These bugs are caused by mmap changing behavior; 
> > it used to return NULL when given a length of 0.
> > However, it now returns -1, and gives back an errno=EINVAL.
> > 
> Indeed.  This was the sole change in the 1.13.8 release.

Thanks, I didn't notice it was since 2.6.12. woody dpkg
was long broken. I've only seen more recent reports about this.

To fix this problem, will require update to 
dpkg in woody; which might not be feasible.
We could drop support of woody chroots in etch.
It might be possible to add a workaround hack 
in [c]debootstrap to trap mmap; or fill 
status/available files before invoking dpkg.


I'm not quite sure why sarge manages to bootstrap despite 
having a dpkg version (1.10.28) that shouldn't work.


regards,
	junichi

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