Bug 2402740

Summary:	8.0.120 breaks gating tests and breaks apps in F43+
Product:	[Fedora] Fedora	Reporter:	Michael Cronenworth <mike>
Component:	dotnet8.0	Assignee:	Omair Majid <omajid>
Status:	CLOSED ERRATA	QA Contact:
Severity:	urgent	Docs Contact:
Priority:	unspecified
Version:	rawhide	CC:	omajid
Target Milestone:	---	Flags:	omajid: mirror+
Target Release:	---
Hardware:	x86_64
OS:	Linux
Whiteboard:
Fixed In Version:	dotnet8.0-8.0.121-1.fc43	Doc Type:	---
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2025-11-11 00:49:40 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 Michael Cronenworth 2025-10-09 15:23:00 UTC

Description of problem:
Applications coredump on Fedora 43 and higher after upgrading from 8.0.19 to 8.0.20.

Only affects Fedora 43 and higher. Apps in Fedora 42 with 8.0.20 do not coredump.

Downgrading F43 to 8.0.19 allows apps to work.


Version-Release number of selected component (if applicable):
dotnet8.0-8.0.120-1.fc43


How reproducible: Always


Steps to Reproduce:
1. dnf install jellyfin (from RPMFusion)
2. systemctl start jellyfin
3. coredump

Actual results:
Service does not start

Expected results:
Service starts.


Additional info:
https://bugzilla.rpmfusion.org/show_bug.cgi?id=7330

Comment 1 Omair Majid 2025-10-09 16:46:42 UTC

Thank you for reporting this.

I am aware that recent builds of all versions of .NET - 8.0, 9.0 and 10.0 - are currently fully broken in Fedora 43 and later. On a clean install on a fresh system, any SDK command - even `dotnet new hello` - leads to a segfault in the runtime.

Based on the timing of the break and the widespread nature, I suspect something recently changed in the compiler or compiler flags that we use to build .NET itself. I will dig deeper into this over the next few days.

Comment 2 Fedora Update System 2025-11-04 17:25:45 UTC

FEDORA-2025-9171c95e17 (dotnet8.0-8.0.121-1.fc43) has been submitted as an update to Fedora 43.
https://bodhi.fedoraproject.org/updates/FEDORA-2025-9171c95e17

Comment 3 Fedora Update System 2025-11-11 00:49:40 UTC

FEDORA-2025-9171c95e17 (dotnet8.0-8.0.121-1.fc43) has been pushed to the Fedora 43 stable repository.
If problem still persists, please make note of it in this bug report.