Bug#1102160: upgrade-reports: Bookworm to Trixie [amd64][EFI] initramfs unpacking failed invalid magic at start of compressed archive

[Chris Hofstaedtler]

Control: tags -1 + moreinfo unreproducible

On Fri, May 02, 2025 at 08:14:37PM +0300, Martin-Éric Racine wrote:
> pe 2.5.2025 klo 19.44 Chris Hofstaedtler (zeha at debian.org) kirjoitti:
> >
> > On Sun, Apr 13, 2025 at 10:23:17AM +0300, Martin-Éric Racine wrote:
> > > Is there any way I can help the maintainers pinpoint the source of the problem?
> >
> > This bug needs two things:
> >
> > 1) A full reproducer step list, starting from "I have nothing but an empty
> > amd64 VM".
> 
> There isn't much to reproduce:
> 1) Start with a fully functional host running Bookworm with GRUB-EFI
> on a brtfs filesystem created using d-i/Bookworm's default @rootfs
> subvolume name.
> 2) Change APT sources from Bookworm to Trixie.
> 3) Dist-upgrade.
> 4) Reboot.
> 5) Find the above kernel panic.
> 6) Using Bookworm d-i's rescue mode via EFI, APT pin and downgrade
> grub* to Bookworm. All other packages remain at Trixie versions.
> 7) Reboot.
> 8) The host boots normally.

I've followed these steps today, and cannot reproduce the problem. 
The upgraded VM boots successfully.

Chris