Arch Linux

Description:

After upgrading package qemu from 6.0.0-3 to 6.1.0-1, all pre-existing images fail to start throwing an error "Assertion `salen >= sizeof(su->sun_family) + 1 && salen <= sizeof(struct sockaddr_un)' failed." when using virt-manager (libvirt) or Gnome Boxes. The same occurs if I try to build a new image using either virt-manager or Gnome Boxes after the qemu upgrade. Only solution is to downgrade qemu back to 6.0.0-3, or completely remove all network interfaces from the image configuration (which I cannot operate with, unfortunately).

Additional info:
* package version(s): 6.1.0-1
* config and/or log files etc.
* link to upstream bug report, if any
It appears that upstream is aware of the issue and has corrected it, and applied it to the main repository, but there is no official patch that I can see:
https://gitlab.com/qemu-project/qemu/-/issues/607

I imagine that this will be fixed officially once the next version of qemu is released sometime in December according to their roadmap.

Steps to reproduce:
Using either virt-manager or Gnome Boxes, build a brand new image of any kind, it will fail to start. I can recreate the issue 100% on my system, but I'm not sure if there is something special about my configuration otherwise, I haven't been able to track anything down.

I did take the change reported as the fix from upstream and created a patch, then applied it to the official qemu package, installed it on my computer and confirmed that, with the patch, the images work again. I'm attaching them for reference, I'm not sure if we would be willing to modify the official qemu package to include the patch (which would also need to be applied to the qemu-arch-extra package to). This would be temporary until upstream releases their next published release.

I'm more than happy to provide any additional information if required.

My intent in logging this ticket is to bring visibility to this problem from upstream.