Created attachment 112158 [details] full backtrace Application: krunner (5.12.4) (Compiled from sources) Qt Version: 5.10.1 Frameworks Version: 5.45.0 Operating System: Linux 4.16.0-jk1 x86_64 Distribution: "Gentoo Base System release 2.4.1" -- Information about the crash: When using jemalloc with krunner it crashes when searching for commands. Here is the jemalloc issue: https://github.com/jemalloc/jemalloc/issues/1187 - Custom settings of the application: Using jemalloc The crash can be reproduced every time.