https://bugs.kde.org/show_bug.cgi?id=510601
Bug ID: 510601
Summary: kwin freezes seemingly at random
Classification: Plasma
Product: kwin
Version First 6.4.5
Reported In:
Platform: Fedora RPMs
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: wayland-generic
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
Created attachment 185765
--> https://bugs.kde.org/attachment.cgi?id=185765&action=edit
GDB backtrace without expanded variables
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***
SUMMARY
STEPS TO REPRODUCE
Unsure what triggers this, I was merely moving my mouse within a window when
this happened.
OBSERVED RESULT
kwin_wayland freezes with 100% CPU usage on one core and the session cannot be
interacted with, neither via keyboard nor mouse.
EXPECTED RESULT
kwin keeps working normally.
SOFTWARE/OS VERSIONS
$ kinfo
Operating System: Fedora Linux 43
KDE Plasma Version: 6.4.5
KDE Frameworks Version: 6.18.0
Qt Version: 6.9.2
Kernel Version: 6.17.1-300.fc43.x86_64 (64-bit)
Graphics Platform: Wayland
Processors: 12 × AMD Ryzen 5 PRO 4650U with Radeon Graphics
Memory: 40 GiB of RAM (38.4 GiB usable)
Graphics Processor: AMD Radeon Graphics
ADDITIONAL INFORMATION
Running
```
$ qdbus-qt6 org.kde.KWin /KWin supportInformation
```
as recommended on https://community.kde.org/KWin/Debugging just times out.
journald output for the current boot is attached. The crash at the end was
caused by me sending SIGSEGV to kwin so that it generates a coredump in dr.
konqi.
There are also some backtraces attached. One was generated by running
```
sudo gdb -pid $(pidof kwin_wayland) -batch -ex "set logging file
kwin_wayland.gdb" -ex "set logging enabled on" -ex "continue" -ex "thread apply
all backtrace" -ex "quit"
```
the other (with expanded variables) by running
```
sudo gdb -pid $(pidof kwin_wayland) -batch -ex "set logging file
kwin_wayland_full.gdb" -ex "set logging enabled on" -ex "continue" -ex "thread
apply all backtrace full" -ex "quit"
```
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