b4 bug: "Error tagging the revision" in project with git submodules

b4 bug: "Error tagging the revision" in project with git submodules

[Manos Pitsidianakis]

Hello,

When doing `b4 send` on the QEMU project, all works well except
tagging the revision fails, I assume because the temporary git
worktree doesn't have all submodules (perhaps some of them have not
been "update"d to be fetched locally?)

Trimmed `b4 send` output:

> Sent 1 messages
> Unable to fetch from the worktree
> From /tmp/tmpw4rzk8xm
>  * branch                  HEAD       -> FETCH_HEAD
> Could not access submodule 'roms/QemuMacDrivers'
> Could not access submodule 'roms/SLOF'
> Could not access submodule 'roms/edk2'
> Could not access submodule 'roms/ipxe'
> Could not access submodule 'roms/openbios'
> Could not access submodule 'roms/opensbi'
> Could not access submodule 'roms/qboot'
> Could not access submodule 'roms/qemu-palcode'
> Could not access submodule 'roms/seabios'
> Could not access submodule 'roms/seabios-hppa'
> Could not access submodule 'roms/skiboot'
> Could not access submodule 'roms/u-boot'
> Could not access submodule 'roms/u-boot-sam460ex'
> Could not access submodule 'roms/vbootrom'
> Fetching submodule tests/lcitool/libvirt-ci
> Error tagging the revision:
> Recording series message-id in cover letter tracking
> Created new revision v2
> Updating cover letter with templated changelog entries.
> Invoking git-filter-repo to update the cover letter.
> New history written in 0.07 seconds...
> Completely finished after 0.15 seconds.

To be clear, everything else works fine, it's only the tagging that fails.

-- 
Manos Pitsidianakis
Emulation and Virtualization Engineer

Re: b4 bug: "Error tagging the revision" in project with git submodules

[Konstantin Ryabitsev]

On Mon, Jul 28, 2025 at 03:01:51PM +0300, Manos Pitsidianakis wrote:
> Hello,
> 
> When doing `b4 send` on the QEMU project, all works well except
> tagging the revision fails, I assume because the temporary git
> worktree doesn't have all submodules (perhaps some of them have not
> been "update"d to be fetched locally?)

Okay, I was never really happy with the way I implemented this via tagging, so
this may be the reason for me to get back and review how it's done.

Thanks for the report.

bugspray tag me

Re: b4 bug: "Error tagging the revision" in project with git submodules

[Bugspray Bot]

Hello:

This conversation is now tracked by Kernel.org Bugzilla:
https://bugzilla.kernel.org/show_bug.cgi?id=220380

There is no need to do anything else, just keep talking.
-- 
Deet-doot-dot, I am a bot.
Kernel.org Bugzilla (bugspray 0.1-dev)

Re: b4 bug: "Error tagging the revision" in project with git submodules

[Manos Pitsidianakis]

Ah, happens to b4 git repo as well because of patatt:

$ b4.sh send
Converted the branch to 4 messages
---
To: "Kernel.org Tools" <tools@kernel.org>
<-- trim -->

Error running checkout into sparse workdir
fatal: not a git repository:
../../../path/to/b4/.git/worktrees/tmpgg1xbvwu/modules/patatt
fatal: could not reset submodule index

Error tagging the revision:
Recording series message-id in cover letter tracking
Created new revision v2
Updating cover letter with templated changelog entries.
Invoking git-filter-repo to update the cover letter.
New history written in 0.02 seconds...
Completely finished after 0.05 seconds.