Bug 2331665

Summary:	libcomps segfaults when iterating over and iterator from an iterator
Product:	[Fedora] Fedora	Reporter:	Miro Hrončok <mhroncok>
Component:	libcomps	Assignee:	Miro Hrončok <mhroncok>
Status:	CLOSED ERRATA	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	urgent	Docs Contact:
Priority:	unspecified
Version:	41	CC:	daniel.mach, jluza, jmracek, mblaha, pkratoch, python-maint, rpm-software-management, sergio
Target Milestone:	---
Target Release:	---
Hardware:	Unspecified
OS:	Linux
Whiteboard:
Fixed In Version:	libcomps-0.1.21-4.fc42 libcomps-0.1.21-4.fc41	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2024-12-11 20:25:46 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	2321657, 2330927

Description Miro Hrončok 2024-12-11 10:39:48 UTC

This is pretty much the same thing as bz2330562 but for libcomps.

In Python 3.13.0:

>>> import libcomps
>>> i = libcomps.Comps()
>>> next(iter(iter(i.environments)))
Segmentation fault (core dumped)

This is with python3-libcomps-0.1.21-3.fc41.x86_64.


With Python 3.13.1 this code is called via dnf in https://github.com/rpm-software-management/dnf/blob/4.22.0/dnf/comps.py#L420

This causes anaconda to segfault and blocks update to Python 3.13.1.

Reproducible: Always

Comment 1 Miro Hrončok 2024-12-11 10:47:09 UTC

> >>> import libcomps
> >>> i = libcomps.Comps()
> >>> next(iter(iter(i.environments)))
> Segmentation fault (core dumped)

Or even:

>>> import libcomps
>>> i = libcomps.Comps()
>>> it = iter(i.environments)
>>> it2 = iter(it)
Segmentation fault (core dumped)

Comment 2 Miro Hrončok 2024-12-11 11:17:06 UTC

Upstream PR: https://github.com/rpm-software-management/libcomps/pull/116

Comment 3 Fedora Update System 2024-12-11 14:14:02 UTC

FEDORA-2024-63d5771cc9 (libcomps-0.1.21-4.fc42) has been submitted as an update to Fedora 42.
https://bodhi.fedoraproject.org/updates/FEDORA-2024-63d5771cc9

Comment 4 Fedora Update System 2024-12-11 14:34:06 UTC

FEDORA-2024-3c18fe0d93 (libcomps-0.1.21-4.fc41, libdnf-0.73.4-2.fc41, and 2 more) has been submitted as an update to Fedora 41.
https://bodhi.fedoraproject.org/updates/FEDORA-2024-3c18fe0d93

Comment 5 Fedora Update System 2024-12-11 20:25:46 UTC

FEDORA-2024-63d5771cc9 (libcomps-0.1.21-4.fc42) has been pushed to the Fedora 42 stable repository.
If problem still persists, please make note of it in this bug report.

Comment 6 Fedora Update System 2024-12-12 02:40:11 UTC

FEDORA-2024-3c18fe0d93 has been pushed to the Fedora 41 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2024-3c18fe0d93`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2024-3c18fe0d93

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 7 Fedora Update System 2024-12-22 02:01:05 UTC

FEDORA-2024-3c18fe0d93 (libcomps-0.1.21-4.fc41, libdnf-0.73.4-2.fc41, and 2 more) has been pushed to the Fedora 41 stable repository.
If problem still persists, please make note of it in this bug report.