Wow, it was harder than expected to get the dbsym packages without a security-debug suite. Thanks to adsb and ansgar on #debian-qt-kde for the help (adds additional steps to my easy useful backtraces for end users plan). Here it is:
Application: kdeinit5 (kdeinit5), signal: Segmentation fault Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". [KCrash Handler] #6 0x00007f966bfb6465 in QVector<unsigned long long>::reallocData (this=this@entry=0x5630f066f3a8, asize=268435452, aalloc=<optimized out>, options=...) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:218 #7 0x00007f966bfba78e in QVector<unsigned long long>::append (t=<synthetic pointer>: <optimized out>, this=0x5630f066f3a8) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qrefcount.h:102 #8 QVector<unsigned long long>::operator<< (t=<synthetic pointer>: <optimized out>, this=0x5630f066f3a8) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qvector.h:283 #9 IdTreePostingIterator::next (this=0x5630f066f380) at ./src/engine/idtreedb.cpp:128 #10 0x00007f966bfa9444 in Baloo::AndPostingIterator::next (this=0x5630f0662de0) at ./src/engine/andpostingiterator.cpp:42 #11 Baloo::AndPostingIterator::next (this=0x5630f0662de0) at ./src/engine/andpostingiterator.cpp:45 #12 0x00007f966c18c4c1 in Baloo::SearchStore::exec (this=this@entry=0x7ffe684bfcb0, term=..., offset=<optimized out>, limit=<optimized out>, sortResults=<optimized out>) at ./src/lib/searchstore.cpp:127 #13 0x00007f966c17b190 in Baloo::Query::exec (this=this@entry=0x7ffe684bfd40) at ./src/lib/query.cpp:210 #14 0x00007f967332f519 in Baloo::SearchProtocol::listDir (this=0x7ffe684bffa0, url=...) at ./src/kioslaves/search/kio_search.cpp:120 #15 0x00007f966e512f36 in KIO::SlaveBase::dispatch (this=0x7ffe684bffa0, command=71, data=...) at ./src/core/slavebase.cpp:1176 #16 0x00007f966e513876 in KIO::SlaveBase::dispatchLoop (this=this@entry=0x7ffe684bffa0) at ./src/core/slavebase.cpp:325 #17 0x00007f967332fd07 in kdemain (argc=<optimized out>, argv=<optimized out>) at ./src/kioslaves/search/kio_search.cpp:218 #18 0x00005630f0593e1c in launch (argc=4, _name=0x5630f0641248 "/usr/lib/x86_64-linux-gnu/qt5/plugins/kf5/kio/baloosearch.so", args=<optimized out>, cwd=<optimized out>, envc=0, envs=<optimized out>, reset_env=false, tty=0x0, avoid_loops=false, startup_id_str=0x5630f0597187 "0") at ./src/kdeinit/kinit.cpp:706 #19 0x00005630f0594eea in handle_launcher_request (sock=8, who=<optimized out>) at ./src/kdeinit/kinit.cpp:1146 #20 0x00005630f05958fb in handle_requests (waitForPid=0) at ./src/kdeinit/kinit.cpp:1339 #21 0x00005630f0590645 in main (argc=5, argv=<optimized out>) at ./src/kdeinit/kinit.cpp:1785 [Inferior 1 (process 2571) detached]
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