XPost: linux.debian.bugs.dist
From: [email protected]

Package: grub-efi-amd64,linux-image-amd64
Severity: important

Dear maintainers,

I had kernel 6.12.27 running. I just upgraded to kernel 6.12.32. My system then did not boot by itself because the grub config still contained entries
for 6.12.31, which had been autoremoved. I could recover by booting the old 6.12.27 and then doing a manual 'update-grub'.

I see this in my /var/log/apt/term.log:

Log started: 2025-06-20 13:29:34
(Reading database ...
(Reading database ... 5%
(Reading database ... 10%
(Reading database ... 15%
(Reading database ... 20%
(Reading database ... 25%
(Reading database ... 30%
(Reading database ... 35%
(Reading database ... 40%
(Reading database ... 45%

(Reading database ... 50%
(Reading database ... 55%
(Reading database ... 60%
(Reading database ... 65%
(Reading database ... 70%
(Reading database ... 75%
(Reading database ... 80%
(Reading database ... 85%
(Reading database ... 90%
(Reading database ..
. 95%
(Reading database ... 100%
(Reading database ... 618410 files and directories currently installed.)

Preparing to unpack .../initramfs-tools_0.148.2_all.deb ...

Unpacking initramfs-tools (0.148.2) over (0.147) ...

Preparing to unpack .../initramfs-tools-core_0.148.2_all.deb ...

Unpacking initramfs-tools-core (0.148.2) over (0.147) ...

Selecting previously unselected package initramfs-tools-bin.

Preparing to unpack .../initramfs-tools-bin_0.148.2_amd64.deb ...

Unpacking initramfs-tools-bin (0.148.2) ...

Selecting previously unselected package linux-image-6.12.32-amd64.

Preparing to unpack .../linux-image-6.12.32-amd64_6.12.32-1_amd64.deb ...

Unpacking linux-image-6.12.32-amd64 (6.12.32-1) ...

Preparing to unpack .../linux-image-amd64_6.12.32-1_amd64.deb ...

Unpacking linux-image-amd64 (6.12.32-1) over (6.12.31-1) ...

Setting up initramfs-tools-bin (0.148.2) ...

Setting up initramfs-tools-core (0.148.2) ...

Setting up initramfs-tools (0.148.2) ...

update-initramfs: deferring update (trigger activated)

Setting up linux-image-6.12.32-amd64 (6.12.32-1) ...

I: /vmlinuz.old is now a symlink to boot/vmlinuz-6.12.31-amd64

I: /initrd.img.old is now a symlink to boot/initrd.img-6.12.31-amd64

I: /vmlinuz is now a symlink to boot/vmlinuz-6.12.32-amd64

I: /initrd.img is now a symlink to boot/initrd.img-6.12.32-amd64

/etc/kernel/postinst.d/initramfs-tools:

update-initramfs: Generating /boot/initrd.img-6.12.32-amd64

I: The initramfs will attempt to resume from /dev/dm-2

I: (/dev/mapper/vg_zephyr-lv_zephyr_swap)

I: Set the RESUME variable to override this.

Setting up linux-image-amd64 (6.12.32-1) ...

Processing triggers for man-db (2.13.1-1) ...

Processing triggers for initramfs-tools (0.148.2) ...

update-initramfs: /boot/initrd.img-6.12.32-amd64 has already been updated since Fri 20 Jun 2025 13:29:37 BST.

Log ended: 2025-06-20 13:29:52

--
Sean Whitton

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--- SoupGate-Win32 v1.05
* Origin: you cannot sedate... all the things you hate (1:229/2)

XPost: linux.debian.bugs.dist
From: [email protected]

Am Freitag, dem 20.06.2025 um 13:49 +0100 schrieb Sean Whitton:

Package: grub-efi-amd64,linux-image-amd64
Severity: important

Dear maintainers,

I had kernel 6.12.27 running.  I just upgraded to kernel 6.12.32.  My system
then did not boot by itself because the grub config still contained
entries
for 6.12.31, which had been autoremoved.  I could recover by booting
the old
6.12.27 and then doing a manual 'update-grub'.

I see this in my /var/log/apt/term.log:

[...]

Hi Sean,

strange that update-grub isn't at all run.

Do you have /etc/kernel/postinst.d/zz-update-grub?
It should be installed by grub2-common.

--- SoupGate-Win32 v1.05
* Origin: you cannot sedate... all the things you hate (1:229/2)

XPost: linux.debian.bugs.dist
From: [email protected]

Hello,

On Fri 20 Jun 2025 at 03:15pm +02, Felix Zielcke wrote:

Am Freitag, dem 20.06.2025 um 13:49 +0100 schrieb Sean Whitton:

Package: grub-efi-amd64,linux-image-amd64
Severity: important

Dear maintainers,

I had kernel 6.12.27 running.  I just upgraded to kernel 6.12.32.  My
system
then did not boot by itself because the grub config still contained
entries
for 6.12.31, which had been autoremoved.  I could recover by booting
the old
6.12.27 and then doing a manual 'update-grub'.

I see this in my /var/log/apt/term.log:

[...]

Hi Sean,

strange that update-grub isn't at all run.

Do you have /etc/kernel/postinst.d/zz-update-grub?
It should be installed by grub2-common.

I have /etc/kernel/postinst.d/zz-update-grub.dpkg-dist only.

Reinstalling grub2-common does not fix the problem.

--
Sean Whitton

--=-=-Content-Type: application/pgp-signature; name="signature.asc"

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--- SoupGate-Win32 v1.05
* Origin: you cannot

XPost: linux.debian.bugs.dist
From: [email protected]

Am Freitag, dem 20.06.2025 um 15:28 +0100 schrieb Sean Whitton:

Hello,

[...]

I have /etc/kernel/postinst.d/zz-update-grub.dpkg-dist only.

Reinstalling grub2-common does not fix the problem.

This is very strange.
zz-update-grub is just a normal dpkg conffile. We don't do anything
special with it.
And according to our git, it wast last changed 2021.

I guess to fix that with dpkg you would need to completely purge the
package and then reinstall. But please make a backup of
/etc/default/grub

Or you could check if the dpkg-dist is the correct one and just rename
that.

Also check /etc/kernel/postrm.d/
Looks like there it's also missing or with the .dpkg-dist extension.

--- SoupGate-Win32 v1.05
* Origin: you cannot sedate... all the things you hate (1:229/2)

XPost: linux.debian.bugs.dist
From: [email protected]

On Fri, Jun 20, 2025 at 06:04:26PM +0200, Felix Zielcke wrote:

Am Freitag, dem 20.06.2025 um 15:28 +0100 schrieb Sean Whitton:

I have /etc/kernel/postinst.d/zz-update-grub.dpkg-dist only.

Reinstalling grub2-common does not fix the problem.

This is very strange.
zz-update-grub is just a normal dpkg conffile. We don't do anything
special with it.
And according to our git, it wast last changed 2021.

I guess to fix that with dpkg you would need to completely purge the
package and then reinstall.

dpkg doesn't reinstall removed conffiles by default (it interprets that
as a deliberate user change), but you can override that using
--force-confmiss.

--
Colin Watson (he/him) [[email protected]]

--- SoupGate-Win32 v1.05
* Origin: you cannot sedate... all the things you hate (1:229/2)

XPost: linux.debian.bugs.dist
From: [email protected]

control: reopen -1

Hello,

I definitely did not remove the file myself. Therefore, it is a bug
somewhere that it got deleted by something about the package upgrade.

One thing that seems notable to me is that the apt log I posted has a
message about an initrd image having "already been updated". I have not
seen this message before. HTH.

--
Sean Whitton

--=-=-Content-Type: application/pgp-signature; name="signature.asc"

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--- SoupGate-Win32 v1.05
* Origin: you canno

XPost: linux.debian.bugs.dist
From: [email protected]

Hello,

On Fri 20 Jun 2025 at 06:04pm +02, Felix Zielcke wrote:

Also check /etc/kernel/postrm.d/
Looks like there it's also missing or with the .dpkg-dist extension.

Yes, in that directory too it is there but only with a .dpkg-dist
extension.

--
Sean Whitton

--=-=-Content-Type: application/pgp-signature; name="signature.asc"

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--- SoupGate-Win32 v1.05
* Origin: you canno

XPost: linux.debian.bugs.dist
From: [email protected]

On Sat, Jun 21, 2025 at 11:38:46AM +0100, Sean Whitton wrote:

On Fri 20 Jun 2025 at 06:04pm +02, Felix Zielcke wrote:

Also check /etc/kernel/postrm.d/
Looks like there it's also missing or with the .dpkg-dist extension.

Yes, in that directory too it is there but only with a .dpkg-dist
extension.

Neither maintainer scripts of linux nor grub2 contain code that could
remove just /etc/kernel/post{inst,rm}.d/zz-upgrade-grub, which is what
you claim you see. Please provide evidence instead of paraphrasing.

Aka:
- dpkg -s grub2-common
- ls -alR /etc
- grep -r /etc/kernel /var/lib/dpkg/info
- zgrep /etc/kernel /var/log/apt/*

Also code search does not find anything else targeting the
zz-upgrade-grub files specifically.

Bastian

--
No one can guarantee the actions of another.
-- Spock, "Day of the Dove", stardate unknown

--- SoupGate-Win32 v1.05
* Origin: you cannot sedate... all the things you hate (1:229/2)

XPost: linux.debian.bugs.dist
From: [email protected]

Hello,

On Sat 21 Jun 2025 at 01:46pm +02, Bastian Blank wrote:

On Sat, Jun 21, 2025 at 11:38:46AM +0100, Sean Whitton wrote:

On Fri 20 Jun 2025 at 06:04pm +02, Felix Zielcke wrote:

Also check /etc/kernel/postrm.d/
Looks like there it's also missing or with the .dpkg-dist extension.

Yes, in that directory too it is there but only with a .dpkg-dist
extension.

Neither maintainer scripts of linux nor grub2 contain code that could
remove just /etc/kernel/post{inst,rm}.d/zz-upgrade-grub, which is what
you claim you see. Please provide evidence instead of paraphrasing.

Okay.

Aka:
- dpkg -s grub2-common

--8<---------------cut here---------------start------------->8---
Package: grub2-common
Status: install ok installed
Priority: optional
Section: admin
Installed-Size: 1404
Maintainer: GRUB Maintainers <[email protected]> Architecture: amd64
Multi-Arch: foreign
Source: grub2
Version: 2.12-8
Replaces: grub, grub-cloud-amd64 (<< 0.0.4), grub-common (<< 1.99-1), grub-coreboot (<< 2.02+dfsg1-7), grub-doc (<< 0.97-32), grub-efi-amd64 (<< 2.02+dfsg1-7), grub-efi-arm (<< 2.02+dfsg1-7), grub-efi-arm64 (<< 2.02+dfsg1-7), grub-efi-ia32 (<< 2.02+dfsg1-
7), grub-efi-ia64 (<< 2.02+dfsg1-7), grub-ieee1275 (<< 2.02+dfsg1-7), grub-legacy, grub-legacy-doc (<< 0.97-59), grub-pc (<< 2.02+dfsg1-7), grub-uboot (<< 2.02+dfsg1-7), grub-xen (<< 2.02+dfsg1-7), grub-yeeloong (<< 2.02+dfsg1-7)
Depends: grub-common (= 2.12-8), dpkg (>= 1.15.4), libc6 (>= 2.38), libdevmapper1.02.1 (>= 2:1.02.197), libefiboot1t64 (>= 38), libefivar1t64 (>= 38), liblzma5 (>= 5.1.1alpha+20120614)
Breaks: grub (<< 0.97-54), grub-cloud-amd64 (<< 0.0.4), grub-coreboot (<< 2.02+dfsg1-7), grub-doc (<< 0.97-32), grub-efi-amd64 (<< 2.02+dfsg1-7), grub-efi-arm (<< 2.02+dfsg1-7), grub-efi-arm64 (<< 2.02+dfsg1-7), grub-efi-ia32 (<< 2.02+dfsg1-7), grub-efi-
ia64 (<< 2.02+dfsg1-7), grub-ieee1275 (<< 2.02+dfsg1-7), grub-legacy (<< 0.97-83~), grub-legacy-doc (<< 0.97-59), grub-pc (<< 2.02+dfsg1-7), grub-uboot (<< 2.02+dfsg1-7), grub-xen (<< 2.02+dfsg1-7), grub-yeeloong (<< 2.02+dfsg1-7), shim (<< 0.9+
1474479173.6c180c6-0ubuntu1~)
Conffiles:
/etc/kernel/postinst.d/zz-update-grub 5a98abefbfe97dbed36db7899251e433
/etc/kernel/postrm.d/zz-update-grub 5a98abefbfe97dbed36db7899251e433 Description: GRand Unified Bootloader (common files for version 2)
This package contains common files shared by the distinct flavours of GRUB.
The files in this package are specific to GRUB 2, and would break GRUB
Legacy if installed on the same system.
Homepage: https://www.gnu.org/software/grub/
--8<---------------cut here---------------end--------------->8---

- ls -alR /etc

Hmm, that feels like something of a privacy breach.
Could you narrow it down?

- grep -r /etc/kernel /var/lib/dpkg/info

--8<---------------cut here---------------start------------->8--- /var/lib/dpkg/info/initramfs-tools.conffiles:/etc/kernel/postinst.d/initramfs-tools
/var/lib/dpkg/info/initramfs-tools.conffiles:/etc/kernel/postrm.d/initramfs-tools
/var/lib/dpkg/info/unattended-upgrades.conffiles:/etc/kernel/postinst.d/unattended-upgrades
/var/lib/dpkg/info/initramfs-tools.list:/etc/kernel /var/lib/dpkg/info/initramfs-tools.list:/etc/kernel/postinst.d /var/lib/dpkg/info/initramfs-tools.list:/etc/kernel/postinst.d/initramfs-tools /var/lib/dpkg/info/initramfs-tools.list:/etc/kernel/postrm.d /var/lib/dpkg/info/initramfs-tools.list:/etc/kernel/postrm.d/initramfs-tools /var/lib/dpkg/info/linux-image-6.12.31-amd64.postrm:if [ -d /etc/kernel/postrm.d ]; then
/var/lib/dpkg/info/linux-image-6.12.31-amd64.postrm: --arg=$image_path /etc/kernel/postrm.d
/var/lib/dpkg/info/apt.list:/etc/kernel /var/lib/dpkg/info/apt.list:/etc/kernel/postinst.d /var/lib/dpkg/info/grub2-common.conffiles:/etc/kernel/postinst.d/zz-update-grub /var/lib/dpkg/info/grub2-common.conffiles:/etc/kernel/postrm.d/zz-update-grub /var/lib/dpkg/info/grub-efi-amd64.postinst: if egrep -q '^[[:space:]]*post(inst|rm)_hook[[:space:]]*=[[:space:]]*(/sbin/|/usr/sbin/)?update-grub' /etc/kernel-img.conf 2>/dev/null; then
/var/lib/dpkg/info/grub-efi-amd64.postinst: echo 'Removing update-grub hooks from /etc/kernel-img.conf in favour of' >&2
/var/lib/dpkg/info/grub-efi-amd64.postinst: echo '/etc/kernel/ hooks.' >&2 /var/lib/dpkg/info/grub-efi-amd64.postinst: sed -ri /etc/kernel-img.conf -e '\%^[[:space:]]*post(inst|rm)_hook[[:space:]]*=[[:space:]]*(/sbin/|/usr/sbin/)?update-grub%d'
/var/lib/dpkg/info/grub-efi-amd64.preinst: test -h /etc/kernel/postrm.d/zz-update-grub; then
/var/lib/dpkg/info/grub-efi-amd64.preinst: rm -f /etc/kernel/postrm.d/zz-update-grub
/var/lib/dpkg/info/grub2-common.list:/etc/kernel /var/lib/dpkg/info/grub2-common.list:/etc/kernel/postinst.d /var/lib/dpkg/info/grub2-common.list:/etc/kernel/postinst.d/zz-update-grub /var/lib/dpkg/info/grub2-common.list:/etc/kernel/postrm.d /var/lib/dpkg/info/grub2-common.list:/etc/kernel/postrm.d/zz-update-grub /var/lib/dpkg/info/systemd.list:/etc/kernel /var/lib/dpkg/info/systemd.list:/etc/kernel/install.d /var/lib/dpkg/info/intel-microcode.list:/etc/kernel

[continued in next message]

--- SoupGate-Win32 v1.05
* Origin: you cannot sedate... all the things you hate (1:229/2)

XPost: linux.debian.bugs.dist
From: [email protected]

On Sun, Jun 22, 2025 at 05:25:07PM +0100, Sean Whitton wrote:

- dpkg -s grub2-common

/etc/kernel/postinst.d/zz-update-grub 5a98abefbfe97dbed36db7899251e433
/etc/kernel/postrm.d/zz-update-grub 5a98abefbfe97dbed36db7899251e433

So at least you now have the correct files.

- ls -alR /etc

Hmm, that feels like something of a privacy breach.
Could you narrow it down?

This was more fishing for possibly other lost conffiles, aka
"*.dpkg-dist", or other weird stuff.

- grep -r /etc/kernel /var/lib/dpkg/info

So there seems to be nothing else installed that could remove those
files as part of maintainer scripts at least.

- zgrep /etc/kernel /var/log/apt/*

This did not produce any useful output:

But this shows that those two scripts where missing for a long time, as
they don't show up in the run-parts output. With the default logrotate
config for term.log (rotate monthly and keep 12) this means it is broken
since a year.

So all the calls of "update-grub" from the linux maintainer scripts have
been missing. But something still created new grub configs or you
would've never booted 6.12.31. So either there is something else on
this system that creates grub configs or someone did it by hand.

You could try and see if logs contain traces of "update-grub":

- grep "Found linux image" -B 10 /var/log/ -r
- journalctl --since=2025-04-01 -g 'Found linux image'

Bastian

--
You're dead, Jim.
-- McCoy, "The Tholian Web", stardate unknown

--- SoupGate-Win32 v1.05
* Origin: you cannot sedate... all the things you hate (1:229/2)

XPost: linux.debian.bugs.dist
From: [email protected]

Hello,

On Tue 24 Jun 2025 at 11:31pm +02, Bastian Blank wrote:

On Sun, Jun 22, 2025 at 05:25:07PM +0100, Sean Whitton wrote:

- dpkg -s grub2-common

/etc/kernel/postinst.d/zz-update-grub 5a98abefbfe97dbed36db7899251e433
/etc/kernel/postrm.d/zz-update-grub 5a98abefbfe97dbed36db7899251e433

So at least you now have the correct files.

Well, they're not installed at those paths, only the *.dpkg-dist still.

- ls -alR /etc

Hmm, that feels like something of a privacy breach.
Could you narrow it down?

This was more fishing for possibly other lost conffiles, aka
"*.dpkg-dist", or other weird stuff.

Okay. There is also /etc/cryptsetup-initramfs/conf-hook.dpkg-dist.

- zgrep /etc/kernel /var/log/apt/*

This did not produce any useful output:

But this shows that those two scripts where missing for a long time, as
they don't show up in the run-parts output. With the default logrotate config for term.log (rotate monthly and keep 12) this means it is broken since a year.

So all the calls of "update-grub" from the linux maintainer scripts have
been missing. But something still created new grub configs or you
would've never booted 6.12.31. So either there is something else on
this system that creates grub configs or someone did it by hand.

(This might be a red herring because this machine has barely been used
over the past year.)

You could try and see if logs contain traces of "update-grub":

- grep "Found linux image" -B 10 /var/log/ -r
- journalctl --since=2025-04-01 -g 'Found linux image'

There is exactly one trace: when apt upgraded to grub-efi-amd64 2.12-8:

--8<---------------cut here---------------start------------->8---
Setting up grub-efi-amd64 (2.12-8) ...
[...]
Found linux image: /boot/vmlinuz-6.12.31-amd64
Found initrd image: /boot/initrd.img-6.12.31-amd64
Found linux image: /boot/vmlinuz-6.12.27-amd64
Found initrd image: /boot/initrd.img-6.12.27-amd64
--8<---------------cut here---------------end--------------->8---

In the [...] I got prompted about the new /etc/default/grub.

So it seems like the conffile handling that went on during that /etc/default/grub change might have gone wrong?

--
Sean Whitton

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