Application: dolphin (15.08.2)

Qt Version: 5.4.2
Operating System: Linux 4.2.0-19-generic x86_64
Distribution: Ubuntu 15.10

-- Information about the crash:
Just tried to select a bunch of files. Seems like it's start crashing after 8 files were selected

The crash can be reproduced every time.

-- Backtrace:
Application: Dolphin (dolphin), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fecdc198800 (LWP 20576))]

Thread 3 (Thread 0x7fecd97be700 (LWP 20577)):
#0  0x00007fecee8e58dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fece3310bd2 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007fece331274f in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007fecdbd0ca39 in QXcbEventReader::run (this=0x220f0f0) at qxcbconnection.cpp:1105
#4  0x00007fece97542be in QThreadPrivate::start (arg=0x220f0f0) at thread/qthread_unix.cpp:337
#5  0x00007fece5e116aa in start_thread (arg=0x7fecd97be700) at pthread_create.c:333
#6  0x00007fecee8f0eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7feccfac9700 (LWP 20578)):
#0  0x00007fecee8e149d in read () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fece571e4e0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fece56dacd4 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fece56db190 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fece56db2fc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fece998b29b in QEventDispatcherGlib::processEvents (this=0x7fecc80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#6  0x00007fece993175a in QEventLoop::exec (this=this@entry=0x7feccfac8dc0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#7  0x00007fece974f3d4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#8  0x00007fece97542be in QThreadPrivate::start (arg=0x26ab700) at thread/qthread_unix.cpp:337
#9  0x00007fece5e116aa in start_thread (arg=0x7feccfac9700) at pthread_create.c:333
#10 0x00007fecee8f0eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7fecdc198800 (LWP 20576)):
[KCrash Handler]
#6  mdb_cursor_init (mc=mc@entry=0x7ffcb967a800, txn=txn@entry=0x345d170, dbi=dbi@entry=1, mx=mx@entry=0x0) at mdb.c:7130
#7  0x00007fece1febd0b in mdb_dbi_open (txn=0x345d170, name=name@entry=0x7fece6694d75 "postingdb", flags=flags@entry=0, dbi=dbi@entry=0x7ffcb967a9d4) at mdb.c:9167
#8  0x00007fece6681507 in Baloo::PostingDB::open (txn=<optimized out>) at ../../../src/engine/postingdb.cpp:53
#9  0x00007fece6674eb9 in Baloo::Database::open (this=this@entry=0x7fece689b3e0 <(anonymous namespace)::Q_QGS_s_db::innerFunction()::holder>, mode=mode@entry=Baloo::Database::OpenDatabase) at ../../../src/engine/database.cpp:102
#10 0x00007fecec6e9e46 in Baloo::File::load (this=this@entry=0x7ffcb967ac30) at ../../../src/lib/file.cpp:99
#11 0x00007fececc78806 in Baloo::FileFetchJob::doStart (this=0x3146990) at ../../src/filefetchjob.cpp:58
#12 0x00007fece9965651 in QObject::event (this=0x3146990, e=<optimized out>) at kernel/qobject.cpp:1245
#13 0x00007fecea411b8c in QApplicationPrivate::notify_helper (this=this@entry=0x21f6910, receiver=receiver@entry=0x3146990, e=e@entry=0x2f98d70) at kernel/qapplication.cpp:3720
#14 0x00007fecea417230 in QApplication::notify (this=0x7ffcb967b330, receiver=0x3146990, e=0x2f98d70) at kernel/qapplication.cpp:3503
#15 0x00007fece9933f1b in QCoreApplication::notifyInternal (this=0x7ffcb967b330, receiver=0x3146990, event=event@entry=0x2f98d70) at kernel/qcoreapplication.cpp:935
#16 0x00007fece9936057 in QCoreApplication::sendEvent (event=0x2f98d70, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:228
#17 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x21f5aa0) at kernel/qcoreapplication.cpp:1552
#18 0x00007fece9936588 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1410
#19 0x00007fece998ae73 in postEventSourceDispatch (s=0x222d720) at kernel/qeventdispatcher_glib.cpp:271
#20 0x00007fece56daff7 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#21 0x00007fece56db250 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#22 0x00007fece56db2fc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#23 0x00007fece998b27f in QEventDispatcherGlib::processEvents (this=0x222ae50, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#24 0x00007fece993175a in QEventLoop::exec (this=this@entry=0x7ffcb967b200, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#25 0x00007fece99392cc in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1188
#26 0x00007fece9e5e00c in QGuiApplication::exec () at kernel/qguiapplication.cpp:1510
#27 0x00007fecea40e025 in QApplication::exec () at kernel/qapplication.cpp:2956
#28 0x00007feceec121c4 in kdemain (argc=1, argv=<optimized out>) at ../../src/main.cpp:146
#29 0x00007fecee80aa40 in __libc_start_main (main=0x400730 <main(int, char**)>, argc=1, argv=0x7ffcb967b4b8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffcb967b4a8) at libc-start.c:289
#30 0x0000000000400769 in _start ()

Reported using DrKonqi