https://bugs.kde.org/show_bug.cgi?id=428268

--- Comment #5 from Fabian Vogt <fab...@ritter-vogt.de> ---
(In reply to Joern from comment #4)
> Created attachment 136535 [details]
> kwin pipewire crash backtrace
> 
> 1. Start a kwin_waylan session
> 2. Open some windows
> 3. Randomly click these windows in the taskbar. (Differs from 5-30x)
> 
> I've a very similar if not the same problem.
> Running KDE 5.21.2 Wayland.
> 
> Whenever kwin_wayland crashes there is always a pipewire message in the logs
> 1-3 seconds before. See logs/backtrace.
> 
> Mär 09 18:30:57 XPS7590 pipewire[2218]: protocol-native 0x55b30f070ca0:
> client 0x55b30f1a9150 error -9 (Bad file descriptor)
> Mär 09 18:30:57 XPS7590 pipewire[2218]: mempool 0x55b30f063020: Failed to
> create memfd: Too many open files

Apparently Kwin doesn't handle this failure gracefully, it probably passes
some invalid values further down the chain until it crashes in the graphics
driver (?):

Mar 09 18:57:32 XPS7590 kernel: kwin_wayland[914]: segfault at 7fa7a42480d8 ip
00007fa7a42480d8 sp 00007ffcf4c13dd0 error 14 in
anon_inode:i915.gem[7fa7a42ff000+c0000]

Sounds like a different issue, or actually two: Opening too many files
(whatever the reason is) and missing (?) error handling.

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