Created attachment 1937928 [details]
Journal showing plasmashell crashes with The Wayland connection experienced a fatal error: Bad file descriptor

Description of problem:

I was using Plasma 5.26.5 on Wayland with a Fedora Rawhide KDE Plasma live image Fedora-KDE-Live-x86_64-Rawhide-20230111.n.0.iso in a QEMU/KVM VM in GNOME Boxes in a Fedora 37 KDE Plasma installation. I started Konsole from the menu. I ran sudo dnf upgrade in Konsole. I hovered the cursor over the icons in the task manager. plasmashell crashed when hovering over task manager icons  plasmashell might've crashed when the Konsole popup was shown. The task manager disappeared and then reappeared automatically several seconds later. The journal at the time of the crash showed plasmashell crashed with the error The Wayland connection experienced a fatal error: Bad file descriptor and lines like plasmashell[1531]: kpipewire_logging: Failed to query DMA-BUF formats.

Jan 13 17:50:14 plasmashell[1531]: trying to show an empty dialog
Jan 13 17:50:16 plasmashell[1531]: kpipewire_logging: Failed to query DMA-BUF formats.
Jan 13 17:50:17 plasmashell[1531]: kpipewire_logging: Failed to query DMA-BUF formats.
Jan 13 17:50:25 plasmashell[1531]: kpipewire_logging: Failed to query DMA-BUF formats.
Jan 13 17:50:26 plasmashell[1531]: kpipewire_logging: Failed to query DMA-BUF formats.
Jan 13 17:50:27 plasmashell[1531]: KCrash: Application 'plasmashell' crashing...
Jan 13 17:50:27 plasmashell[1531]: The Wayland connection experienced a fatal error: Bad file descriptor
Jan 13 17:50:28 systemd[1344]: plasma-plasmashell.service: Main process exited, code=exited, status=1/FAILURE
Jan 13 17:50:28 systemd[1344]: plasma-plasmashell.service: Failed with result 'exit-code'.
Jan 13 17:50:28 systemd[1344]: plasma-plasmashell.service: Consumed 43.195s CPU time.
Jan 13 17:50:28 systemd[1344]: plasma-plasmashell.service: Scheduled restart job, restart counter is at 1.
Jan 13 17:50:28 systemd[1344]: Stopped plasma-plasmashell.service - KDE Plasma Workspace.
Jan 13 17:50:28 systemd[1344]: plasma-plasmashell.service: Consumed 43.195s CPU time.
Jan 13 17:50:28 systemd[1344]: Starting plasma-plasmashell.service - KDE Plasma Workspace...
Jan 13 17:50:29 plasmashell[2722]: libEGL warning: egl: failed to create dri2 screen
Jan 13 17:50:29 systemd[1344]: Started plasma-plasmashell.service - KDE Plasma Workspace.

drkonqi didn't appear. I'll try to reproduce the problem to get a trace with gdb or valgrind. I'm attaching the journal which shows three plasmashell crashes with The Wayland connection experienced a fatal error: Bad file descriptor in the same Plasma 5.26.5 on Wayland session. The first plasmashell crash was the one I described. The second plasmashell crash happened when I clicked on the Status and Notifications applet button in the system tray at the bottom right of the screen. The third plasmashell crash happened when I was using Firefox. The bottom panel disappeared and reappeared automatically each time.

Version-Release number of selected component (if applicable):
plasma-workspace-5.26.5-1.fc38
kf5-plasma-5.101.0-1.fc38
qt5-qtbase-5.15.8-2.fc38
konsole5-22.12.1-1.fc38

How reproducible:
The crash happened three times in one session.

Steps to Reproduce:
1. Boot a Fedora 37 KDE Plasma installation 
2. Log in to Plasma on Wayland
3. Download Fedora Rawhide KDE Plasma live image Fedora-KDE-Live-x86_64-Rawhide-20230111.n.0.iso https://koji.fedoraproject.org/koji/buildinfo?buildID=2109618
4. Install GNOME Boxes if it isn't already with sudo dnf install gnome-boxes
5. Start GNOME Boxes
6. Boot the Fedora Rawhide KDE Plasma live image Fedora-KDE-Live-x86_64-Rawhide-20230111.n.0.iso in a QEMU/KVM VM in GNOME Boxes with 3 GB RAM using the llvmpipe mesa driver and virtio_gpu kernel driver
7. start Konsole from the Application launcher menu. 
8. hover the cursor back and forth over the icons including Konsole in the task manager and system tray buttons and sometimes clicking them until the crash happens

Actual results:
plasmashell crashed when hovering over task manager icons with the error The Wayland connection experienced a fatal error: Bad file descriptor

Expected results:
plasmashell wouldn't crash

Additional info:
I reported this problem at https://bugs.kde.org/show_bug.cgi?id=464258
The way in which the crash happened was similar those crashes reported at https://bugzilla.redhat.com/show_bug.cgi?id=2140010 and https://bugs.kde.org/show_bug.cgi?id=447717 However, the errors in the journal were different.