Bug#825423: supermin + sbuild + linux-image = broken chroot

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From	Santiago Vila <sanvila@debian.org>
Newsgroups	linux.debian.bugs.dist, linux.debian.kernel
Subject	Bug#825423: supermin + sbuild + linux-image = broken chroot
Date	Thu, 20 Feb 2025 12:10:01 +0100
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Cross-posted to 2 groups.

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reassign 825423 linux-base
found 825423 4.2
close 825423 4.3
thanks

El 20/2/25 a las 11:19, Salvatore Bonaccorso escribió:
> Hi,
> 
> On Sat, Jun 04, 2016 at 06:12:40PM +0100, Ben Hutchings wrote:
>> On Sat, 2016-06-04 at 17:59 +0200, Santiago Vila wrote:
>>> On Sat, Jun 04, 2016 at 04:33:58PM +0100, Ben Hutchings wrote:
>>>>> You can use the command ischroot from the debianutils package.
>>>>
>>>> Why would I want to add a dependency on that? [...]
>>>
>>> You really wouldn't, because debianutils is essential.
>>
>> Oh duh, thanks for pointing that out.
> 
> is this bug still present or can we close this old bug?

Seems fixed. I just tried this:

sbuild -d bookworm supermin

on a stable system still running 6.1.0-29
(upgraded to -31, but not rebooted yet).

The build process installed linux-image-6.1.0-29-amd64,
the package was built, and sbuild was able to remove
the kernel even if it had the same version as the
running kernel:

[...]
Removing linux-image-amd64 (6.1.123-1) ...
Removing linux-image-6.1.0-29-amd64 (6.1.123-1) ...
W: Last kernel image has been removed, so removing the default symlinks
/etc/kernel/postrm.d/initramfs-tools:
update-initramfs: Deleting /boot/initrd.img-6.1.0-29-amd64
Removing initramfs-tools (0.142+deb12u1) ...
Removing initramfs-tools-core (0.142+deb12u1) ...


Apparently linux-check-removal is smarter now:

---------
If the currently running kernel matches VERSION, linux-check-removal
will normally prompt the user to confirm this potentially dangerous
action and will fail if the user chooses to abort.  However, if the
current environment is in a chroot or container, or if debconf
prompts are disabled, it will always succeed without prompting.
---------

I traced that to commit [4a695de] in linux-base, dated 2016-06-06
(which is just two days later than the last message from Ben
in this thread).

     Add linux-check-removal command for use by package prerm scripts
     
     Use the existing logic (roughly) and exactly the same debconf template
     and translations that are currently included in src:linux.

Therefore, I think this was fixed in linux-base 4.3.
Closing myself.

Thanks a lot!

Thread

Bug#825423: supermin + sbuild + linux-image = broken chroot Salvatore Bonaccorso <carnil@debian.org> - 2025-02-20 11:30 +0100
  Bug#825423: supermin + sbuild + linux-image = broken chroot Santiago Vila <sanvila@debian.org> - 2025-02-20 12:10 +0100
    Processed: Re: Bug#825423: supermin + sbuild + linux-image =  broken chroot "Debian Bug Tracking System" <owner@bugs.debian.org> - 2025-02-20 12:10 +0100
    Bug#825423: supermin + sbuild + linux-image = broken chroot Ben Hutchings <ben@decadent.org.uk> - 2025-02-20 23:30 +0100

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