DESCRIPTION systemsettings cannot be opened STEPS TO REPRODUCE 1. start systemsettings in terminal OBSERVED RESULT systemsettings terminate called after throwing an instance of 'std::out_of_range' what(): basic_string::at: __n (which is 0) >= this->size() (which is 0) KCrash: Application 'systemsettings' crashing... crashRecursionCounter = 2 Aborted (core dumped) systemsettings EXPECTED RESULT No crash SOFTWARE/OS VERSIONS Operating System: Fedora Linux 44 KDE Plasma Version: 6.7.2 KDE Frameworks Version: 6.27.0 Qt Version: 6.11.1 ADDITIONAL INFORMATION Fanatec Pedals seems to cause it with device path "/dev/input/event28". udevmatcher.cpp seems to expect an id in the path (e.g. 0005:18D1:9400.005). This used to work a couple of month back, no hardware change -> a change somewhere else (outside of udevmatcher.cpp) revealed this issue yet systemsettings shouldn't crash.
A possibly relevant merge request was started @ https://invent.kde.org/plasma/plasma-desktop/-/merge_requests/3874
Update: /dev/input/event28 is a virtual device actually not the real pedal device, I needed it for Assetto Corsa but I forgot why. Anyway doesn't really change anything.
Do you happen to have a backtrace? From looking at https://invent.kde.org/plasma/plasma-desktop/-/merge_requests/3874/diffs I have a hard time to see why / where the std::out_of_range would happen and why the MR would fix it.
Did dig deeper. Will reply at the MR.
A possibly relevant merge request was started @ https://invent.kde.org/plasma/plasma-desktop/-/merge_requests/3893
Git commit 932f29636ccd264005cb1af579c0c1a11976cbf7 by Sebastian Sauer. Committed on 20/07/2026 at 04:29. Pushed by meven into branch 'master'. kcms/gamecontroller: Fix std::out_of_range exception If either slash==std::string::npos or devicePath.empty() then the code can throw a std::out_of_range exception. Fix that and make sure the code not throws a std::out_of_range exception. Based on a patch done by Adam Doda. M +1 -1 kcms/gamecontroller/udevmatcher.cpp https://invent.kde.org/plasma/plasma-desktop/-/commit/932f29636ccd264005cb1af579c0c1a11976cbf7
Git commit 71b3e4dafaaab146d1054225bfaccf8115bebe2e by Sebastian Sauer. Committed on 20/07/2026 at 04:29. Pushed by meven into branch 'master'. kcms/gamecontroller: Fix UB to use of uninitialized memory In the else case sys_path was never initialized resulting in random memory being passed into udev_device_new_from_syspath what results in undefined behavior. Based on a patch done by Adam Doda. M +3 -0 kcms/gamecontroller/udevmatcher.cpp https://invent.kde.org/plasma/plasma-desktop/-/commit/71b3e4dafaaab146d1054225bfaccf8115bebe2e
Git commit ed508fbc7b39dba3369f57858b07fdb921e9e8b6 by Méven Car. Committed on 20/07/2026 at 09:59. Pushed by meven into branch 'Plasma/6.7'. kcms/gamecontroller: Fix std::out_of_range exception If either slash==std::string::npos or devicePath.empty() then the code can throw a std::out_of_range exception. Fix that and make sure the code not throws a std::out_of_range exception. Based on a patch done by Adam Doda. (cherry picked from commit 932f29636ccd264005cb1af579c0c1a11976cbf7) Co-authored-by: Sebastian Sauer <dipesh@gmx.de> M +1 -1 kcms/gamecontroller/udevmatcher.cpp https://invent.kde.org/plasma/plasma-desktop/-/commit/ed508fbc7b39dba3369f57858b07fdb921e9e8b6