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

From: Junichi Uekawa
Date: Sun Oct 09 2005 - 20:08:25 EST


> > 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.


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