Bug 2521321

Summary:	DNF5 undefined symbol occurs with latest release of DNF5.
Product:	[Fedora] Fedora	Reporter:	gitxpresso
Component:	dnf5	Assignee:	rpm-software-management
Status:	CLOSED WORKSFORME	QA Contact:
Severity:	high	Docs Contact:
Priority:	unspecified
Version:	44	CC:	jmracek, joe.c.walker0, jonathan, jrohel, mblaha, packaging-team-maint, pkratoch, ppisar, rpm-software-management
Target Milestone:	---	Keywords:	Triaged
Target Release:	---	Flags:	fedora-admin-xmlrpc: mirror+
Hardware:	x86_64
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	---
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2026-09-07 07:41:30 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description gitxpresso 2026-08-22 14:22:55 UTC

Description of problem:
Whenever using DNF5 after updating It to the latest version, you get a builddep binary undefined symbol error thus make It impossible to install anything using DNF5.

Version-Release number of selected component (if applicable): 5.4.3.0-2

How reproducible: 70% 

Reason: Doesn't reproduce on another user's system.

Steps to Reproduce:
1. Update to the latest version of DNF5
2. Use Reinstall, Install, or any similar sub-command to reproduce the binary undefined symbol output.
3. Use `sudo dnf4 downgrade dnf5` to revert to the version of dnf5 in the original F44 release
4. Repeat step 2 - now the problem does not appear
5. Use `sudo dnf update dnf5` to update to version 5.4.3.0-2 of dnf5
6. Repeat step 2 - the problem reappears

Actual results:
When Installing, reinstalling, or any similar sub-command, you get this error:
```
┌──(gitxpresso㉿fedora44)-[~]
└─$ sudo dnf reinstall -y git
Cannot load dnf5 plugin: /usr/lib64/dnf5/plugins/builddep_cmd_plugin.so
 Cannot load shared library "/usr/lib64/dnf5/plugins/builddep_cmd_plugin.so": /usr/lib64/dnf5/plugins/builddep_cmd_plugin.so: undefined symbol: _ZN4dnf523create_transient_optionERNS_7CommandE
```

Expected results:
Successfully execute any command using DNF5

Additional info:
To the fix to Issue as of right now, Is downgrading DNF5.
Github Issue containing proof that this Is indeed a bug:
```
https://github.com/rpm-software-management/dnf5/issues/2885
```

Comment 1 Joe Walker 2026-08-22 17:02:49 UTC

You should probably change the component to dnf5. 
https://discussion.fedoraproject.org/t/dnf5-important-binary-has-undefined-symbol/200000

Comment 2 Petr Pisar 2026-08-31 14:29:19 UTC

I cannot reproduce it. The symbol is provided by /usr/bin/dnf5 executable:

# nm -D /usr/lib64/dnf5/plugins/builddep_cmd_plugin.so | grep _ZN4dnf523create_transient_optionERNS_7CommandE
                 U _ZN4dnf523create_transient_optionERNS_7CommandE
# nm -D /usr/bin/dnf5 | grep _ZN4dnf523create_transient_optionERNS_7CommandE
000000000011e110 T _ZN4dnf523create_transient_optionERNS_7CommandE

I guess you do not execute /usr/bin/dnf5 owned by dnf5-5.4.3.0-2.fc44.x86_64.

Comment 3 Petr Pisar 2026-08-31 14:34:57 UTC

By the way, you can disable all DNF5 plugins by defining DNF5_PLUGINS_DIR environment variable to a directory with no plugins, like:

# DNF5_PLUGINS_DIR=/dev/null dnf5 --version
Attached command "builddep" not found: Command id "dnf5" does not contain subcommand with id "builddep": Requested in file "/usr/share/dnf5/aliases.d/compatibility-plugins.conf" on line 5: attached_command = 'builddep'
Missing attribute "attached_command" for command "build-dep" in file "/usr/share/dnf5/aliases.d/compatibility-plugins.conf"
Parent command "reposync" not found: Command id "dnf5" does not contain subcommand with id "reposync": Requested in file "/usr/share/dnf5/aliases.d/compatibility-reposync.conf" on line 3: ['reposync.downloadpath']
Parent command "reposync" not found: Command id "dnf5" does not contain subcommand with id "reposync": Requested in file "/usr/share/dnf5/aliases.d/compatibility-reposync.conf" on line 9: ['reposync.source']
dnf5 version 5.4.3.0
dnf5 plugin API version 2.0
libdnf5 version 5.4.3.0
libdnf5 plugin API version 2.2

That should unblock you for using DNF5 to perform most of the operations.