Application: baloo_file (5.9.0)

Qt Version: 5.4.1
Operating System: Linux 3.19.0-25-generic x86_64
Distribution: Netrunner 16

-- Information about the crash:
- What I was doing when the application crashed:
Logged in, 
- Unusual behavior I noticed:
nothing unusual.
- Custom settings of the application:
just mounted 2 external USB drives formatted with ext4 FS, another drive is commented out at the moment in fstab due to it failing. These drives are also set as samba shares

The crash can be reproduced every time.

-- Backtrace:
Application: Baloo File (baloo_file), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f6f58f85800 (LWP 4392))]

Thread 2 (Thread 0x7f6f43f86700 (LWP 4397)):
#0  0x00007f6f558398dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f6f54721b72 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f6f5472364f in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f6f46315099 in QXcbEventReader::run (this=0x1c8fce0) at qxcbconnection.cpp:1105
#4  0x00007f6f560d0b0e in QThreadPrivate::start (arg=0x1c8fce0) at thread/qthread_unix.cpp:337
#5  0x00007f6f4fad9754 in ?? () from /usr/lib/nvidia-304/libGL.so.1
#6  0x00007f6f555276aa in start_thread (arg=0x7f6f43f86700) at pthread_create.c:333
#7  0x00007f6f55844eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f6f58f85800 (LWP 4392)):
[KCrash Handler]
#6  size (this=<optimized out>, this=<optimized out>) at /usr/include/c++/4.9/bits/stl_vector.h:655
#7  Xapian::Database::get_document (this=0x0, did=did@entry=7) at ../api/omdatabase.cc:439
#8  0x00007f6f5828b524 in Baloo::XapianDatabase::document (this=0x1cd3ed0, id=id@entry=7) at ../../../src/xapian/xapiandatabase.cpp:170
#9  0x000000000041e4b2 in Baloo::BasicIndexingQueue::shouldIndex (this=this@entry=0x1e7ab00, file=..., mimetype=...) at ../../../src/file/basicindexingqueue.cpp:140
#10 0x000000000041f0a5 in Baloo::BasicIndexingQueue::process (this=this@entry=0x1e7ab00, file=..., flags=...) at ../../../src/file/basicindexingqueue.cpp:96
#11 0x000000000041f65c in Baloo::BasicIndexingQueue::processNextIteration (this=0x1e7ab00) at ../../../src/file/basicindexingqueue.cpp:78
#12 0x00007f6f5634073a in QObject::event (this=0x1e7ab00, e=<optimized out>) at kernel/qobject.cpp:1245
#13 0x00007f6f56c18b2c in QApplicationPrivate::notify_helper (this=0x1c69e20, receiver=0x1e7ab00, e=0x1f09dc0) at kernel/qapplication.cpp:3720
#14 0x00007f6f56c1e000 in QApplication::notify (this=0x7ffe6340e190, receiver=0x1e7ab00, e=0x1f09dc0) at kernel/qapplication.cpp:3503
#15 0x00007f6f5630ec2b in QCoreApplication::notifyInternal (this=0x7ffe6340e190, receiver=0x1e7ab00, event=event@entry=0x1f09dc0) at kernel/qcoreapplication.cpp:935
#16 0x00007f6f56310c9b in sendEvent (event=0x1f09dc0, 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=0x1c672c0) at kernel/qcoreapplication.cpp:1552
#18 0x00007f6f56311298 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1410
#19 0x00007f6f56367843 in postEventSourceDispatch (s=0x1cae5f0) at kernel/qeventdispatcher_glib.cpp:271
#20 0x00007f6f50212c3d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#21 0x00007f6f50212f20 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#22 0x00007f6f50212fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#23 0x00007f6f56367c57 in QEventDispatcherGlib::processEvents (this=0x1c6bd50, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#24 0x00007f6f5630c3e2 in QEventLoop::exec (this=this@entry=0x7ffe6340e000, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#25 0x00007f6f5631402c in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1188
#26 0x00007f6f5665331c in QGuiApplication::exec () at kernel/qguiapplication.cpp:1510
#27 0x00007f6f56c147a5 in QApplication::exec () at kernel/qapplication.cpp:2956
#28 0x0000000000417477 in main (argc=1, argv=<optimized out>) at ../../../src/file/main.cpp:101

Reported using DrKonqi