Application: krunner (5.5.3)

Qt Version: 5.5.1
Operating System: Linux 4.2.0-27-generic x86_64
Distribution: Ubuntu 15.10

-- Information about the crash:
I am having quite a few crashes of krunner, normally when trying to start a program, but strangely this time it crashed before typing anything after having just changed the screen from the secondary to the main and then pressed alt+space.

-- Backtrace:
Application: krunner (krunner), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f18f1161800 (LWP 2615))]

Thread 11 (Thread 0x7f18dd35b700 (LWP 2621)):
#0  0x00007f18edbae8dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f18ed09ebd2 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f18ed0a074f in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f18df4a47e9 in QXcbEventReader::run (this=0x233ce20) at qxcbconnection.cpp:1229
#4  0x00007f18ee2a4a6e in QThreadPrivate::start (arg=0x233ce20) at thread/qthread_unix.cpp:331
#5  0x00007f18ebdfe6aa in start_thread (arg=0x7f18dd35b700) at pthread_create.c:333
#6  0x00007f18edbb9eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 10 (Thread 0x7f18d2a9e700 (LWP 2653)):
#0  0x00007f18eb2c3884 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f18eb27f1e1 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f18eb27f2fc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f18ee4dc50b in QEventDispatcherGlib::processEvents (this=0x7f18cc0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0x00007f18ee48350a in QEventLoop::exec (this=this@entry=0x7f18d2a9dda0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f18ee29fac4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007f18f011dc35 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f18ee2a4a6e in QThreadPrivate::start (arg=0x25cbc60) at thread/qthread_unix.cpp:331
#8  0x00007f18ebdfe6aa in start_thread (arg=0x7f18d2a9e700) at pthread_create.c:333
#9  0x00007f18edbb9eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 9 (Thread 0x7f18c3717700 (LWP 3440)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f18ee2a5d0b in QWaitConditionPrivate::wait (time=18446744073709551615, this=0x2b4b390) at thread/qwaitcondition_unix.cpp:136
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x238ab00, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f18cb9b455b in ThreadWeaver::Weaver::blockThreadUntilJobsAreBeingAssigned_locked (this=this@entry=0x2769980, th=<optimized out>) at ../../src/weaver.cpp:594
#4  0x00007f18cb9b530f in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait (this=0x2769980, th=th@entry=0x4236180, threadWasBusy=threadWasBusy@entry=false, suspendIfInactive=suspendIfInactive@entry=false, justReturning=justReturning@entry=false) at ../../src/weaver.cpp:554
#5  0x00007f18cb9b9568 in ThreadWeaver::WorkingHardState::applyForWork (this=0x2b3ba10, th=0x4236180, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:66
#6  0x00007f18cb9b44bd in ThreadWeaver::Weaver::applyForWork (this=<optimized out>, th=0x4236180, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#7  0x00007f18cb9b95c2 in ThreadWeaver::WorkingHardState::applyForWork (this=0x2b3ba10, th=0x4236180, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:73
#8  0x00007f18cb9b44bd in ThreadWeaver::Weaver::applyForWork (this=<optimized out>, th=0x4236180, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#9  0x00007f18cb9b73d3 in ThreadWeaver::Thread::run (this=0x4236180) at ../../src/thread.cpp:103
#10 0x00007f18ee2a4a6e in QThreadPrivate::start (arg=0x4236180) at thread/qthread_unix.cpp:331
#11 0x00007f18ebdfe6aa in start_thread (arg=0x7f18c3717700) at pthread_create.c:333
#12 0x00007f18edbb9eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 8 (Thread 0x7f18c2f16700 (LWP 3441)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f18ee2a5d0b in QWaitConditionPrivate::wait (time=18446744073709551615, this=0x2b4b390) at thread/qwaitcondition_unix.cpp:136
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x238ab00, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f18cb9b455b in ThreadWeaver::Weaver::blockThreadUntilJobsAreBeingAssigned_locked (this=this@entry=0x2769980, th=<optimized out>) at ../../src/weaver.cpp:594
#4  0x00007f18cb9b530f in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait (this=0x2769980, th=th@entry=0x4289240, threadWasBusy=threadWasBusy@entry=true, suspendIfInactive=suspendIfInactive@entry=false, justReturning=justReturning@entry=false) at ../../src/weaver.cpp:554
#5  0x00007f18cb9b9568 in ThreadWeaver::WorkingHardState::applyForWork (this=0x2b3ba10, th=0x4289240, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:66
#6  0x00007f18cb9b44bd in ThreadWeaver::Weaver::applyForWork (this=<optimized out>, th=0x4289240, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#7  0x00007f18cb9b73d3 in ThreadWeaver::Thread::run (this=0x4289240) at ../../src/thread.cpp:103
#8  0x00007f18ee2a4a6e in QThreadPrivate::start (arg=0x4289240) at thread/qthread_unix.cpp:331
#9  0x00007f18ebdfe6aa in start_thread (arg=0x7f18c2f16700) at pthread_create.c:333
#10 0x00007f18edbb9eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7f18c2715700 (LWP 3442)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f18ee2a5d0b in QWaitConditionPrivate::wait (time=18446744073709551615, this=0x2b4b390) at thread/qwaitcondition_unix.cpp:136
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x238ab00, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f18cb9b455b in ThreadWeaver::Weaver::blockThreadUntilJobsAreBeingAssigned_locked (this=this@entry=0x2769980, th=<optimized out>) at ../../src/weaver.cpp:594
#4  0x00007f18cb9b530f in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait (this=0x2769980, th=th@entry=0x421ebb0, threadWasBusy=threadWasBusy@entry=true, suspendIfInactive=suspendIfInactive@entry=false, justReturning=justReturning@entry=false) at ../../src/weaver.cpp:554
#5  0x00007f18cb9b9568 in ThreadWeaver::WorkingHardState::applyForWork (this=0x2b3ba10, th=0x421ebb0, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:66
#6  0x00007f18cb9b44bd in ThreadWeaver::Weaver::applyForWork (this=<optimized out>, th=0x421ebb0, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#7  0x00007f18cb9b73d3 in ThreadWeaver::Thread::run (this=0x421ebb0) at ../../src/thread.cpp:103
#8  0x00007f18ee2a4a6e in QThreadPrivate::start (arg=0x421ebb0) at thread/qthread_unix.cpp:331
#9  0x00007f18ebdfe6aa in start_thread (arg=0x7f18c2715700) at pthread_create.c:333
#10 0x00007f18edbb9eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7f18c1f14700 (LWP 3443)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f18ee2a5d0b in QWaitConditionPrivate::wait (time=18446744073709551615, this=0x2b4b390) at thread/qwaitcondition_unix.cpp:136
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x238ab00, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f18cb9b455b in ThreadWeaver::Weaver::blockThreadUntilJobsAreBeingAssigned_locked (this=this@entry=0x2769980, th=<optimized out>) at ../../src/weaver.cpp:594
#4  0x00007f18cb9b530f in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait (this=0x2769980, th=th@entry=0x4227f20, threadWasBusy=threadWasBusy@entry=false, suspendIfInactive=suspendIfInactive@entry=false, justReturning=justReturning@entry=false) at ../../src/weaver.cpp:554
#5  0x00007f18cb9b9568 in ThreadWeaver::WorkingHardState::applyForWork (this=0x2b3ba10, th=0x4227f20, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:66
#6  0x00007f18cb9b44bd in ThreadWeaver::Weaver::applyForWork (this=<optimized out>, th=0x4227f20, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#7  0x00007f18cb9b95c2 in ThreadWeaver::WorkingHardState::applyForWork (this=0x2b3ba10, th=0x4227f20, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:73
#8  0x00007f18cb9b44bd in ThreadWeaver::Weaver::applyForWork (this=<optimized out>, th=0x4227f20, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#9  0x00007f18cb9b73d3 in ThreadWeaver::Thread::run (this=0x4227f20) at ../../src/thread.cpp:103
#10 0x00007f18ee2a4a6e in QThreadPrivate::start (arg=0x4227f20) at thread/qthread_unix.cpp:331
#11 0x00007f18ebdfe6aa in start_thread (arg=0x7f18c1f14700) at pthread_create.c:333
#12 0x00007f18edbb9eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7f18c1713700 (LWP 3444)):
[KCrash Handler]
#6  __GI___pthread_mutex_lock (mutex=0x7f18ca283008) at ../nptl/pthread_mutex_lock.c:67
#7  0x00007f18c47d7c49 in mdb_txn_renew0 (txn=txn@entry=0x7f18b007e290) at mdb.c:2532
#8  0x00007f18c47d8c10 in mdb_txn_begin (env=0x7f18a008afa0, parent=<optimized out>, flags=<optimized out>, ret=0x7f18c17129c8) at mdb.c:2740
#9  0x00007f18c4e51c6e in Baloo::SearchStore::exec (this=this@entry=0x7f18c1712ab0, term=..., offset=0, limit=10, sortResults=<optimized out>) at ../../../src/lib/searchstore.cpp:74
#10 0x00007f18c4e40c12 in Baloo::Query::exec (this=this@entry=0x7f18c1712b60) at ../../../src/lib/query.cpp:210
#11 0x00007f18c5061f8f in SearchRunner::match (this=this@entry=0x43b99c0, context=..., type=..., category=...) at ../../../runners/baloo/baloosearchrunner.cpp:98
#12 0x00007f18c50628d9 in SearchRunner::match (this=0x43b99c0, context=...) at ../../../runners/baloo/baloosearchrunner.cpp:160
#13 0x00007f18cbbd4590 in Plasma::AbstractRunner::performMatch (this=0x43b99c0, localContext=...) at ../../src/abstractrunner.cpp:131
#14 0x00007f18cb9b8d10 in ThreadWeaver::Executor::run (this=<optimized out>, job=..., thread=<optimized out>) at ../../src/executor.cpp:52
#15 0x00007f18cb9b7860 in ThreadWeaver::Job::execute (this=<optimized out>, self=..., th=0x7f18b4002b90) at ../../src/job.cpp:83
#16 0x00007f18cb9b730a in ThreadWeaver::Thread::run (this=0x7f18b4002b90) at ../../src/thread.cpp:114
#17 0x00007f18ee2a4a6e in QThreadPrivate::start (arg=0x7f18b4002b90) at thread/qthread_unix.cpp:331
#18 0x00007f18ebdfe6aa in start_thread (arg=0x7f18c1713700) at pthread_create.c:333
#19 0x00007f18edbb9eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7f18c0f12700 (LWP 3445)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f18ee2a5d0b in QWaitConditionPrivate::wait (time=18446744073709551615, this=0x2b4b390) at thread/qwaitcondition_unix.cpp:136
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x238ab00, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f18cb9b455b in ThreadWeaver::Weaver::blockThreadUntilJobsAreBeingAssigned_locked (this=this@entry=0x2769980, th=<optimized out>) at ../../src/weaver.cpp:594
#4  0x00007f18cb9b530f in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait (this=0x2769980, th=th@entry=0x7f18bc003190, threadWasBusy=threadWasBusy@entry=false, suspendIfInactive=suspendIfInactive@entry=false, justReturning=justReturning@entry=false) at ../../src/weaver.cpp:554
#5  0x00007f18cb9b9568 in ThreadWeaver::WorkingHardState::applyForWork (this=0x2b3ba10, th=0x7f18bc003190, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:66
#6  0x00007f18cb9b44bd in ThreadWeaver::Weaver::applyForWork (this=<optimized out>, th=0x7f18bc003190, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#7  0x00007f18cb9b95c2 in ThreadWeaver::WorkingHardState::applyForWork (this=0x2b3ba10, th=0x7f18bc003190, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:73
#8  0x00007f18cb9b44bd in ThreadWeaver::Weaver::applyForWork (this=<optimized out>, th=0x7f18bc003190, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#9  0x00007f18cb9b73d3 in ThreadWeaver::Thread::run (this=0x7f18bc003190) at ../../src/thread.cpp:103
#10 0x00007f18ee2a4a6e in QThreadPrivate::start (arg=0x7f18bc003190) at thread/qthread_unix.cpp:331
#11 0x00007f18ebdfe6aa in start_thread (arg=0x7f18c0f12700) at pthread_create.c:333
#12 0x00007f18edbb9eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7f18abfff700 (LWP 3446)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f18ee2a5d0b in QWaitConditionPrivate::wait (time=18446744073709551615, this=0x2b4b390) at thread/qwaitcondition_unix.cpp:136
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x238ab00, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f18cb9b455b in ThreadWeaver::Weaver::blockThreadUntilJobsAreBeingAssigned_locked (this=this@entry=0x2769980, th=<optimized out>) at ../../src/weaver.cpp:594
#4  0x00007f18cb9b530f in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait (this=0x2769980, th=th@entry=0x7f18b8002f90, threadWasBusy=threadWasBusy@entry=false, suspendIfInactive=suspendIfInactive@entry=false, justReturning=justReturning@entry=false) at ../../src/weaver.cpp:554
#5  0x00007f18cb9b9568 in ThreadWeaver::WorkingHardState::applyForWork (this=0x2b3ba10, th=0x7f18b8002f90, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:66
#6  0x00007f18cb9b44bd in ThreadWeaver::Weaver::applyForWork (this=<optimized out>, th=0x7f18b8002f90, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#7  0x00007f18cb9b95c2 in ThreadWeaver::WorkingHardState::applyForWork (this=0x2b3ba10, th=0x7f18b8002f90, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:73
#8  0x00007f18cb9b44bd in ThreadWeaver::Weaver::applyForWork (this=<optimized out>, th=0x7f18b8002f90, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#9  0x00007f18cb9b73d3 in ThreadWeaver::Thread::run (this=0x7f18b8002f90) at ../../src/thread.cpp:103
#10 0x00007f18ee2a4a6e in QThreadPrivate::start (arg=0x7f18b8002f90) at thread/qthread_unix.cpp:331
#11 0x00007f18ebdfe6aa in start_thread (arg=0x7f18abfff700) at pthread_create.c:333
#12 0x00007f18edbb9eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f18ab7fe700 (LWP 3447)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f18ee2a5d0b in QWaitConditionPrivate::wait (time=18446744073709551615, this=0x2b4b390) at thread/qwaitcondition_unix.cpp:136
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x238ab00, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f18cb9b455b in ThreadWeaver::Weaver::blockThreadUntilJobsAreBeingAssigned_locked (this=this@entry=0x2769980, th=<optimized out>) at ../../src/weaver.cpp:594
#4  0x00007f18cb9b530f in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait (this=0x2769980, th=th@entry=0x4288980, threadWasBusy=threadWasBusy@entry=true, suspendIfInactive=suspendIfInactive@entry=false, justReturning=justReturning@entry=false) at ../../src/weaver.cpp:554
#5  0x00007f18cb9b9568 in ThreadWeaver::WorkingHardState::applyForWork (this=0x2b3ba10, th=0x4288980, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:66
#6  0x00007f18cb9b44bd in ThreadWeaver::Weaver::applyForWork (this=<optimized out>, th=0x4288980, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#7  0x00007f18cb9b73d3 in ThreadWeaver::Thread::run (this=0x4288980) at ../../src/thread.cpp:103
#8  0x00007f18ee2a4a6e in QThreadPrivate::start (arg=0x4288980) at thread/qthread_unix.cpp:331
#9  0x00007f18ebdfe6aa in start_thread (arg=0x7f18ab7fe700) at pthread_create.c:333
#10 0x00007f18edbb9eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f18f1161800 (LWP 2615)):
#0  0x00007f18edbae8dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f18eb27f1ec in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f18eb27f2fc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f18ee4dc50b in QEventDispatcherGlib::processEvents (this=0x235d5d0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0x00007f18ee48350a in QEventLoop::exec (this=this@entry=0x7ffdd55ffe30, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f18ee48b5ec in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1229
#6  0x00007f18ee7bfd1c in QGuiApplication::exec () at kernel/qguiapplication.cpp:1530
#7  0x00007f18ef004e15 in QApplication::exec () at kernel/qapplication.cpp:2976
#8  0x0000000000407a37 in main (argc=1, argv=<optimized out>) at ../../krunner/main.cpp:80

Reported using DrKonqi