Created attachment 102346 [details]
Text file for the bug(same as the one in description)

It always crashes when i try to search anything in the application launcher
Here's what i got in gdb:

(gdb) bt
#0  strlen () at ../sysdeps/x86_64/strlen.S:106
#1  0x00007ffff2daf670 in QByteArray::QByteArray(char const*, int) ()
   from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007fff1604c007 in ?? () from /usr/lib/x86_64-linux-gnu/libKF5BalooEngine.so.5
#3  0x00007fff1604c389 in Baloo::PostingDB::prefixIter(QByteArray const&) ()
   from /usr/lib/x86_64-linux-gnu/libKF5BalooEngine.so.5
#4  0x00007fff16056c1d in Baloo::Transaction::postingIterator(Baloo::EngineQuery const&) const ()
   from /usr/lib/x86_64-linux-gnu/libKF5BalooEngine.so.5
#5  0x00007fff164af283 in ?? () from /usr/lib/x86_64-linux-gnu/libKF5Baloo.so.5
#6  0x00007fff164ae92a in ?? () from /usr/lib/x86_64-linux-gnu/libKF5Baloo.so.5
#7  0x00007fff164af860 in ?? () from /usr/lib/x86_64-linux-gnu/libKF5Baloo.so.5
#8  0x00007fff1649df8f in Baloo::Query::exec() () from /usr/lib/x86_64-linux-gnu/libKF5Baloo.so.5
#9  0x00007fff166e76b0 in ?? ()
   from /usr/lib/x86_64-linux-gnu/qt5/plugins/krunner_baloosearchrunner.so
#10 0x00007fff166e8489 in ?? ()
   from /usr/lib/x86_64-linux-gnu/qt5/plugins/krunner_baloosearchrunner.so
#11 0x00007fff3aae3548 in Plasma::AbstractRunner::performMatch(Plasma::RunnerContext&) ()
   from /usr/lib/x86_64-linux-gnu/libKF5Runner.so.5
#12 0x00007fff39fe1c28 in ThreadWeaver::Executor::run(QSharedPointer<ThreadWeaver::JobInterface> const&, ThreadWeaver::Thread*) () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#13 0x00007fff39fe0660 in ThreadWeaver::Job::execute(QSharedPointer<ThreadWeaver::JobInterface> const&, ThreadWeaver::Thread*) () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#14 0x00007fff39fe0200 in ThreadWeaver::Thread::run() ()
   from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#15 0x00007ffff2dabc68 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#16 0x00007ffff1e8b70a in start_thread (arg=0x7ffedf7fe700) at pthread_create.c:333
---Type <return> to continue, or q <return> to quit---
#17 0x00007ffff26b70af in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105
(gdb)