[Bug 2095518] [NEW] dracut-install does not install compressed wildcard blobs

Launchpad Bug Tracker 2095518 at bugs.launchpad.net
Wed Jan 22 17:29:03 UTC 2025


You have been subscribed to a public bug by You-Sheng Yang (vicamo):

[Describe the bug]

Take kernel module intel-ish-ipc for example, it has two firmware
declarations:

```
$ modinfo intel-ish-ipc | grep ^firmware
firmware: intel/ish/ish_*.bin
firmware: intel/ish/ish_lnlm.bin
```

And with additional custom ISH firmware installed from [bug
2094768](https://bugs.launchpad.net/bugs/2094768), update-initramefs
gives:

```
$ update-initramefs -v -u -k $(uname -r)
...
dracut-install: Missing firmware intel/ish/ish_*.bin for kernel module intel_ish_ipc
dracut-install: mkdir '/var/tmp/mkinitramfs_9uk7FI/lib/firmware/intel/ish'
dracut-install: cp '/lib/firmware/intel/ish/ish_lnlm_39ceeaf8_58.7724.2.bin.zst' '/var/tmp/mkinitramfs_9uk7FI/lib/firmware/intel/ish/ish_lnlm_39ceeaf8_58.7724.2.bin.zst'
dracut-install: ln -s 'ish_lnlm_39ceeaf8_58.7724.2.bin.zst' '/var/tmp/mkinitramfs_9uk7FI/lib/firmware/intel/ish/ish_lnlm.bin.zst'
...
```

In source code for `/usr/lib/dracut/dracut-install`, that is, source
package dracut, file `src/install/dracut-install.c`, function
`install_firmware`, it tries to invoke `glob()` with full path expanded
from "intel/ish/ish_*.bin", but while all the binaries were compressed,
this matches no file and none of the custom ISH firmware blobs will be
installed.

[Distribution used]

Ubuntu

[Dracut version]

This was first found in Ubuntu/Noble, which has 060, but from the git
history and the differences, this should be reproducible with all
versions of dracut.

[Init system]

Systemd.

[To Reproduce]

1. touch `/lib/firmware/intel/ish/ish_foo.bin.zst`
2. `update-initramefs -v -u -k $(uname -r)`, and check if above file was added.

[Expected behavior]

Any file under `/lib/firmware/intel/ish` matches `intel/ish/ish_*.bin`,
compressed (.zst, .xz) or uncompressed (.bin), should be added into the
newly created initramefs.

[Additional context]

Upstream bug: https://github.com/dracut-ng/dracut-ng/issues/1150

** Affects: dracut (Ubuntu)
     Importance: Undecided
         Status: New

** Affects: dracut (Ubuntu Jammy)
     Importance: Undecided
         Status: New

** Affects: dracut (Ubuntu Noble)
     Importance: Undecided
         Status: New

** Affects: dracut (Ubuntu Oracular)
     Importance: Undecided
         Status: New

** Affects: dracut (Ubuntu Plucky)
     Importance: Undecided
         Status: New

-- 
dracut-install does not install compressed wildcard blobs
https://bugs.launchpad.net/bugs/2095518
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