Bug 394047

Summary: KNotify crashed while using X Forwarding, KDiff3
Product: [I don't know] kde Reporter: wodencafe
Component: generalAssignee: Unassigned bugs mailing-list <unassigned-bugs>
Status: RESOLVED UNMAINTAINED    
Severity: normal Keywords: drkonqi
Priority: NOR    
Version: unspecified   
Target Milestone: ---   
Platform: unspecified   
OS: Linux   
Latest Commit: Version Fixed In:
Sentry Crash Report:

Description wodencafe 2018-05-09 16:56:48 UTC 
Application: knotify4 (4.14.34)
KDE Platform Version: 4.14.34
Qt Version: 4.8.7
Operating System: Linux 4.13.0-39-generic x86_64
Distribution: Ubuntu 17.10

-- Information about the crash:
- What I was doing when the application crashed:
I was using kdiff3 to solve merge conflicts for my local git repo, this was running on my laptop over SSH with x forward enabled. Several of the merges / dialogs went fine, but one of them triggered this crash.

- Custom settings of the application:
X Forwarded kdiff3

-- Backtrace:
Application: KNotify (knotify4), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
[Current thread is 1 (Thread 0x7f4a58551e80 (LWP 21813))]

Thread 8 (Thread 0x7f4a333b8700 (LWP 23103)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007f4a529d96ef in g_cond_wait () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4a3f50fbcb in gst_task_func (task=0x7f4a2001ecb0) at gsttask.c:320
#3  0x00007f4a529bc010 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f4a529bb645 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f4a52e7d7fc in start_thread (arg=0x7f4a333b8700) at pthread_create.c:465
#6  0x00007f4a55605b5f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7f4a3ae4f700 (LWP 23102)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007f4a529d96ef in g_cond_wait () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4a3b09c287 in gst_queue_chain_buffer_or_list (parent=0x556fe85d0900, obj=0x7f4a341c5940, is_list=0, pad=<optimized out>) at gstqueue.c:1258
#3  0x00007f4a3f4dc2db in gst_pad_chain_data_unchecked (data=0x7f4a341c5940, type=4112, pad=0x556fe85776b0) at gstpad.c:4205
#4  gst_pad_push_data (pad=pad@entry=0x556fe8593450, type=type@entry=4112, data=data@entry=0x7f4a341c5940) at gstpad.c:4461
#5  0x00007f4a3f4e43c3 in gst_pad_push (pad=pad@entry=0x556fe8593450, buffer=buffer@entry=0x7f4a341c5940) at gstpad.c:4580
#6  0x00007f4a3f4cb02b in gst_proxy_pad_chain_default (pad=<optimized out>, parent=<optimized out>, buffer=0x7f4a341c5940) at gstghostpad.c:127
#7  0x00007f4a3f4dc2db in gst_pad_chain_data_unchecked (data=0x7f4a341c5940, type=4112, pad=0x556fe8590ef0) at gstpad.c:4205
#8  gst_pad_push_data (pad=pad@entry=0x556fe8593690, type=type@entry=4112, data=data@entry=0x7f4a341c5940) at gstpad.c:4461
#9  0x00007f4a3f4e43c3 in gst_pad_push (pad=pad@entry=0x556fe8593690, buffer=0x7f4a341c5940) at gstpad.c:4580
#10 0x00007f4a3b0aa4cb in gst_tee_do_push (is_list=0, data=0x7f4a341c5940, pad=0x556fe8593690, tee=0x556fe85e72a0) at gsttee.c:614
#11 gst_tee_handle_data (tee=tee@entry=0x556fe85e72a0, data=data@entry=0x7f4a341c5940, is_list=is_list@entry=0) at gsttee.c:697
#12 0x00007f4a3b0aa909 in gst_tee_chain (pad=<optimized out>, parent=0x556fe85e72a0, buffer=0x7f4a341c5940) at gsttee.c:780
#13 0x00007f4a3f4dc2db in gst_pad_chain_data_unchecked (data=0x7f4a341c5940, type=4112, pad=0x556fe860eb80) at gstpad.c:4205
#14 gst_pad_push_data (pad=pad@entry=0x556fe860e040, type=type@entry=4112, data=data@entry=0x7f4a341c5940) at gstpad.c:4461
#15 0x00007f4a3f4e43c3 in gst_pad_push (pad=0x556fe860e040, buffer=buffer@entry=0x7f4a341c5940) at gstpad.c:4580
#16 0x00007f4a3b09ba39 in gst_queue_push_one (queue=0x556fe85d0c00) at gstqueue.c:1395
#17 gst_queue_loop (pad=<optimized out>) at gstqueue.c:1548
#18 0x00007f4a3f50f9e9 in gst_task_func (task=0x7f4a2001edd0) at gsttask.c:335
#19 0x00007f4a529bc010 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#20 0x00007f4a529bb645 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#21 0x00007f4a52e7d7fc in start_thread (arg=0x7f4a3ae4f700) at pthread_create.c:465
#22 0x00007f4a55605b5f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7f4a319a8700 (LWP 23101)):
[KCrash Handler]
#6  0x00007f4a3f7e0177 in QMap<QString, QString>::detach_helper() () from /usr/lib/x86_64-linux-gnu/qt4/plugins/phonon_backend/phonon_gstreamer.so
#7  0x00007f4a3f7e4167 in Phonon::Gstreamer::Pipeline::cb_tag(_GstBus*, _GstMessage*, void*) () from /usr/lib/x86_64-linux-gnu/qt4/plugins/phonon_backend/phonon_gstreamer.so
#8  0x00007f4a4f95ce18 in ffi_call_unix64 () at ../src/x86/unix64.S:76
#9  0x00007f4a4f95c87a in ffi_call (cif=<optimized out>, fn=<optimized out>, rvalue=<optimized out>, avalue=0x7f4a319a5ba0) at ../src/x86/ffi64.c:525
#10 0x00007f4a52003799 in g_cclosure_marshal_generic () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#11 0x00007f4a52002f9d in g_closure_invoke () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#12 0x00007f4a52015cde in ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#13 0x00007f4a5201e4b5 in g_signal_emit_valist () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#14 0x00007f4a5201eecf in g_signal_emit () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#15 0x00007f4a3f4aac74 in gst_bus_sync_signal_handler (bus=bus@entry=0x556fe85ed4b0, message=message@entry=0x7f4a2800e0b0, data=data@entry=0x0) at gstbus.c:1249
#16 0x00007f4a3f4aaf23 in gst_bus_post (bus=bus@entry=0x556fe85ed4b0, message=message@entry=0x7f4a2800e0b0) at gstbus.c:336
#17 0x00007f4a3f4c0586 in gst_element_post_message_default (element=element@entry=0x556fe8615570, message=0x7f4a2800e0b0) at gstelement.c:1783
#18 0x00007f4a3f49ce2d in gst_bin_post_message (element=0x556fe8615570, msg=0x7f4a2800e0b0) at gstbin.c:2789
#19 0x00007f4a3f4c32de in gst_element_post_message (element=element@entry=0x556fe8615570, message=message@entry=0x7f4a2800e0b0) at gstelement.c:1826
#20 0x00007f4a3f49d169 in gst_bin_handle_message_func (bin=0x556fe8615570, message=<optimized out>) at gstbin.c:4040
#21 0x00007f4a3f4e8b52 in gst_pipeline_handle_message (bin=0x556fe8615570, message=0x7f4a2800e0b0) at gstpipeline.c:600
#22 0x00007f4a383f4f9b in ?? () from /usr/lib/x86_64-linux-gnu/gstreamer-1.0/libgstplayback.so
#23 0x00007f4a3f49a8e8 in bin_bus_handler (bus=bus@entry=0x556fe85ed170, message=message@entry=0x7f4a2800e0b0, bin=bin@entry=0x556fe8615570) at gstbin.c:3260
#24 0x00007f4a3f4aaf23 in gst_bus_post (bus=bus@entry=0x556fe85ed170, message=message@entry=0x7f4a2800e0b0) at gstbus.c:336
#25 0x00007f4a3f4c0586 in gst_element_post_message_default (element=element@entry=0x556fe854edd0, message=0x7f4a2800e0b0) at gstelement.c:1783
#26 0x00007f4a3f49ce2d in gst_bin_post_message (element=0x556fe854edd0, msg=0x7f4a2800e0b0) at gstbin.c:2789
#27 0x00007f4a3f4c32de in gst_element_post_message (element=element@entry=0x556fe854edd0, message=message@entry=0x7f4a2800e0b0) at gstelement.c:1826
#28 0x00007f4a3f49d169 in gst_bin_handle_message_func (bin=0x556fe854edd0, message=<optimized out>) at gstbin.c:4040
#29 0x00007f4a38404d38 in ?? () from /usr/lib/x86_64-linux-gnu/gstreamer-1.0/libgstplayback.so
#30 0x00007f4a3f49a8e8 in bin_bus_handler (bus=bus@entry=0x556fe85ed580, message=message@entry=0x7f4a2800e0b0, bin=bin@entry=0x556fe854edd0) at gstbin.c:3260
#31 0x00007f4a3f4aaf23 in gst_bus_post (bus=bus@entry=0x556fe85ed580, message=message@entry=0x7f4a2800e0b0) at gstbus.c:336
#32 0x00007f4a3f4c0586 in gst_element_post_message_default (element=element@entry=0x556fe85c9d30, message=0x7f4a2800e0b0) at gstelement.c:1783
#33 0x00007f4a3f49ce2d in gst_bin_post_message (element=0x556fe85c9d30, msg=0x7f4a2800e0b0) at gstbin.c:2789
#34 0x00007f4a3f4c32de in gst_element_post_message (element=element@entry=0x556fe85c9d30, message=message@entry=0x7f4a2800e0b0) at gstelement.c:1826
#35 0x00007f4a3f49d169 in gst_bin_handle_message_func (bin=0x556fe85c9d30, message=<optimized out>) at gstbin.c:4040
#36 0x00007f4a3f49a8e8 in bin_bus_handler (bus=bus@entry=0x556fe8616b00, message=message@entry=0x7f4a2800e0b0, bin=bin@entry=0x556fe85c9d30) at gstbin.c:3260
#37 0x00007f4a3f4aaf23 in gst_bus_post (bus=bus@entry=0x556fe8616b00, message=message@entry=0x7f4a2800e0b0) at gstbus.c:336
#38 0x00007f4a3f4c0586 in gst_element_post_message_default (element=element@entry=0x556fe85c96b0, message=0x7f4a2800e0b0) at gstelement.c:1783
#39 0x00007f4a3f49ce2d in gst_bin_post_message (element=0x556fe85c96b0, msg=0x7f4a2800e0b0) at gstbin.c:2789
#40 0x00007f4a3f4c32de in gst_element_post_message (element=element@entry=0x556fe85c96b0, message=message@entry=0x7f4a2800e0b0) at gstelement.c:1826
#41 0x00007f4a3f49d169 in gst_bin_handle_message_func (bin=0x556fe85c96b0, message=<optimized out>) at gstbin.c:4040
#42 0x00007f4a3f49a8e8 in bin_bus_handler (bus=bus@entry=0x556fe85ed650, message=message@entry=0x7f4a2800e0b0, bin=bin@entry=0x556fe85c96b0) at gstbin.c:3260
#43 0x00007f4a3f4aaf23 in gst_bus_post (bus=bus@entry=0x556fe85ed650, message=message@entry=0x7f4a2800e0b0) at gstbus.c:336
#44 0x00007f4a3f4c0586 in gst_element_post_message_default (element=element@entry=0x556fe85c9510, message=0x7f4a2800e0b0) at gstelement.c:1783
#45 0x00007f4a3f49ce2d in gst_bin_post_message (element=0x556fe85c9510, msg=0x7f4a2800e0b0) at gstbin.c:2789
#46 0x00007f4a3f4c32de in gst_element_post_message (element=element@entry=0x556fe85c9510, message=message@entry=0x7f4a2800e0b0) at gstelement.c:1826
#47 0x00007f4a3f49d169 in gst_bin_handle_message_func (bin=0x556fe85c9510, message=<optimized out>) at gstbin.c:4040
#48 0x00007f4a3f49a8e8 in bin_bus_handler (bus=bus@entry=0x556fe85ed240, message=message@entry=0x7f4a2800e0b0, bin=bin@entry=0x556fe85c9510) at gstbin.c:3260
#49 0x00007f4a3f4aaf23 in gst_bus_post (bus=bus@entry=0x556fe85ed240, message=message@entry=0x7f4a2800e0b0) at gstbus.c:336
#50 0x00007f4a3f4c0586 in gst_element_post_message_default (element=element@entry=0x556fe858e430, message=0x7f4a2800e0b0) at gstelement.c:1783
#51 0x00007f4a3f49ce2d in gst_bin_post_message (element=0x556fe858e430, msg=0x7f4a2800e0b0) at gstbin.c:2789
#52 0x00007f4a3f4c32de in gst_element_post_message (element=element@entry=0x556fe858e430, message=message@entry=0x7f4a2800e0b0) at gstelement.c:1826
#53 0x00007f4a3f49d169 in gst_bin_handle_message_func (bin=0x556fe858e430, message=<optimized out>) at gstbin.c:4040
#54 0x00007f4a3f49a8e8 in bin_bus_handler (bus=bus@entry=0x556fe85ed0a0, message=message@entry=0x7f4a2800e0b0, bin=bin@entry=0x556fe858e430) at gstbin.c:3260
#55 0x00007f4a3f4aaf23 in gst_bus_post (bus=bus@entry=0x556fe85ed0a0, message=message@entry=0x7f4a2800e0b0) at gstbus.c:336
#56 0x00007f4a3f4c0586 in gst_element_post_message_default (element=0x556fe86544b0, message=0x7f4a2800e0b0) at gstelement.c:1783
#57 0x00007f4a3f4c32de in gst_element_post_message (element=element@entry=0x556fe86544b0, message=0x7f4a2800e0b0) at gstelement.c:1826
#58 0x00007f4a3e3034f3 in gst_base_sink_default_event (basesink=0x556fe86544b0, event=0x7f4a20005240) at gstbasesink.c:3204
#59 0x00007f4a3b081f0f in gst_fake_sink_event (bsink=0x556fe86544b0, event=0x7f4a20005240) at gstfakesink.c:403
#60 0x00007f4a3e2feef4 in gst_base_sink_event (pad=<optimized out>, parent=0x556fe86544b0, event=0x7f4a20005240) at gstbasesink.c:3270
#61 0x00007f4a3f4dae77 in gst_pad_send_event_unchecked (pad=pad@entry=0x7f4a14035240, event=event@entry=0x7f4a20005240, type=<optimized out>, type@entry=GST_PAD_PROBE_TYPE_EVENT_DOWNSTREAM) at gstpad.c:5623
#62 0x00007f4a3f4db2f1 in gst_pad_push_event_unchecked (pad=pad@entry=0x556fe8593200, event=0x7f4a20005240, type=type@entry=GST_PAD_PROBE_TYPE_EVENT_DOWNSTREAM) at gstpad.c:5279
#63 0x00007f4a3f4db719 in push_sticky (pad=pad@entry=0x556fe8593200, ev=ev@entry=0x7f4a319a6ee0, user_data=user_data@entry=0x7f4a319a6f50) at gstpad.c:3807
#64 0x00007f4a3f4d933f in events_foreach (pad=pad@entry=0x556fe8593200, func=func@entry=0x7f4a3f4db660 <push_sticky>, user_data=user_data@entry=0x7f4a319a6f50) at gstpad.c:604
#65 0x00007f4a3f4e540f in check_sticky (event=0x7f4a20005240, pad=0x556fe8593200) at gstpad.c:3864
#66 gst_pad_push_event (pad=pad@entry=0x556fe8593200, event=0x7f4a20005240) at gstpad.c:5410
#67 0x00007f4a3f4e5944 in event_forward_func (pad=pad@entry=0x556fe8593200, data=data@entry=0x7f4a319a7050) at gstpad.c:2992
#68 0x00007f4a3f4e11ae in gst_pad_forward (pad=pad@entry=0x556fe8590c80, forward=forward@entry=0x7f4a3f4e5880 <event_forward_func>, user_data=user_data@entry=0x7f4a319a7050) at gstpad.c:2946
#69 0x00007f4a3f4e12ad in gst_pad_event_default (pad=0x556fe8590c80, parent=<optimized out>, event=0x7f4a20005240) at gstpad.c:3043
#70 0x00007f4a3f4dae77 in gst_pad_send_event_unchecked (pad=pad@entry=0x556fe8590c80, event=event@entry=0x7f4a20005240, type=<optimized out>, type@entry=GST_PAD_PROBE_TYPE_EVENT_DOWNSTREAM) at gstpad.c:5623
#71 0x00007f4a3f4db2f1 in gst_pad_push_event_unchecked (pad=pad@entry=0x556fe854aff0, event=0x7f4a20005240, type=type@entry=GST_PAD_PROBE_TYPE_EVENT_DOWNSTREAM) at gstpad.c:5279
#72 0x00007f4a3f4db719 in push_sticky (pad=pad@entry=0x556fe854aff0, ev=ev@entry=0x7f4a319a7260, user_data=user_data@entry=0x7f4a319a72d0) at gstpad.c:3807
#73 0x00007f4a3f4d933f in events_foreach (pad=pad@entry=0x556fe854aff0, func=func@entry=0x7f4a3f4db660 <push_sticky>, user_data=user_data@entry=0x7f4a319a72d0) at gstpad.c:604
#74 0x00007f4a3f4e540f in check_sticky (event=0x7f4a20005240, pad=0x556fe854aff0) at gstpad.c:3864
#75 gst_pad_push_event (pad=0x556fe854aff0, event=event@entry=0x7f4a20005240) at gstpad.c:5410
#76 0x00007f4a3e31a821 in gst_base_transform_sink_eventfunc (trans=0x556fe8456520, event=0x7f4a20005240) at gstbasetransform.c:1901
#77 0x00007f4a3f4dae77 in gst_pad_send_event_unchecked (pad=pad@entry=0x556fe854ab70, event=event@entry=0x7f4a20005240, type=<optimized out>, type@entry=GST_PAD_PROBE_TYPE_EVENT_DOWNSTREAM) at gstpad.c:5623
#78 0x00007f4a3f4db2f1 in gst_pad_push_event_unchecked (pad=pad@entry=0x556fe85778f0, event=0x7f4a20005240, type=type@entry=GST_PAD_PROBE_TYPE_EVENT_DOWNSTREAM) at gstpad.c:5279
#79 0x00007f4a3f4db719 in push_sticky (pad=pad@entry=0x556fe85778f0, ev=ev@entry=0x7f4a319a7550, user_data=user_data@entry=0x7f4a319a75c0) at gstpad.c:3807
#80 0x00007f4a3f4d933f in events_foreach (pad=pad@entry=0x556fe85778f0, func=func@entry=0x7f4a3f4db660 <push_sticky>, user_data=user_data@entry=0x7f4a319a75c0) at gstpad.c:604
#81 0x00007f4a3f4e540f in check_sticky (event=0x7f4a20005240, pad=0x556fe85778f0) at gstpad.c:3864
#82 gst_pad_push_event (pad=0x556fe85778f0, event=event@entry=0x7f4a20005240) at gstpad.c:5410
#83 0x00007f4a3e31a821 in gst_base_transform_sink_eventfunc (trans=0x556fe85d3ec0, event=0x7f4a20005240) at gstbasetransform.c:1901
#84 0x00007f4a3f4dae77 in gst_pad_send_event_unchecked (pad=pad@entry=0x556fe8577b30, event=event@entry=0x7f4a20005240, type=<optimized out>, type@entry=GST_PAD_PROBE_TYPE_EVENT_DOWNSTREAM) at gstpad.c:5623
#85 0x00007f4a3f4db2f1 in gst_pad_push_event_unchecked (pad=pad@entry=0x556fe8576b70, event=0x7f4a20005240, type=type@entry=GST_PAD_PROBE_TYPE_EVENT_DOWNSTREAM) at gstpad.c:5279
#86 0x00007f4a3f4db719 in push_sticky (pad=pad@entry=0x556fe8576b70, ev=ev@entry=0x7f4a319a7840, user_data=user_data@entry=0x7f4a319a78b0) at gstpad.c:3807
#87 0x00007f4a3f4d933f in events_foreach (pad=pad@entry=0x556fe8576b70, func=func@entry=0x7f4a3f4db660 <push_sticky>, user_data=user_data@entry=0x7f4a319a78b0) at gstpad.c:604
#88 0x00007f4a3f4e540f in check_sticky (event=0x7f4a20005240, pad=0x556fe8576b70) at gstpad.c:3864
#89 gst_pad_push_event (pad=0x556fe8576b70, event=event@entry=0x7f4a20005240) at gstpad.c:5410
#90 0x00007f4a3e31a821 in gst_base_transform_sink_eventfunc (trans=0x556fe8605140, event=0x7f4a20005240) at gstbasetransform.c:1901
#91 0x00007f4a3f4dae77 in gst_pad_send_event_unchecked (pad=pad@entry=0x556fe8576db0, event=event@entry=0x7f4a20005240, type=<optimized out>, type@entry=GST_PAD_PROBE_TYPE_EVENT_DOWNSTREAM) at gstpad.c:5623
#92 0x00007f4a3f4db2f1 in gst_pad_push_event_unchecked (pad=pad@entry=0x556fe85764b0, event=0x7f4a20005240, type=type@entry=GST_PAD_PROBE_TYPE_EVENT_DOWNSTREAM) at gstpad.c:5279
#93 0x00007f4a3f4db719 in push_sticky (pad=pad@entry=0x556fe85764b0, ev=ev@entry=0x7f4a319a7b30, user_data=user_data@entry=0x7f4a319a7ba0) at gstpad.c:3807
#94 0x00007f4a3f4d933f in events_foreach (pad=pad@entry=0x556fe85764b0, func=func@entry=0x7f4a3f4db660 <push_sticky>, user_data=user_data@entry=0x7f4a319a7ba0) at gstpad.c:604
#95 0x00007f4a3f4e540f in check_sticky (event=0x7f4a20005240, pad=0x556fe85764b0) at gstpad.c:3864
#96 gst_pad_push_event (pad=0x556fe85764b0, event=event@entry=0x7f4a20005240) at gstpad.c:5410
#97 0x00007f4a3b09bc63 in gst_queue_push_one (queue=0x556fe85d0900) at gstqueue.c:1466
#98 gst_queue_loop (pad=<optimized out>) at gstqueue.c:1548
#99 0x00007f4a3f50f9e9 in gst_task_func (task=0x7f4a2001ea70) at gsttask.c:335
#100 0x00007f4a529bc010 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#101 0x00007f4a529bb645 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#102 0x00007f4a52e7d7fc in start_thread (arg=0x7f4a319a8700) at pthread_create.c:465
#103 0x00007f4a55605b5f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f4a321a9700 (LWP 23100)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007f4a529d96ef in g_cond_wait () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4a3e3251db in _gst_data_queue_wait_non_empty (queue=queue@entry=0x7f4a14010f40) at gstdataqueue.c:554
#3  0x00007f4a3e3264f8 in gst_data_queue_pop (queue=0x7f4a14010f40, item=item@entry=0x7f4a321a8bf0) at gstdataqueue.c:596
#4  0x00007f4a3b09675d in gst_multi_queue_loop (pad=<optimized out>) at gstmultiqueue.c:1771
#5  0x00007f4a3f50f9e9 in gst_task_func (task=0x7f4a140374d0) at gsttask.c:335
#6  0x00007f4a529bc010 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007f4a529bb645 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#8  0x00007f4a52e7d7fc in start_thread (arg=0x7f4a321a9700) at pthread_create.c:465
#9  0x00007f4a55605b5f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f4a33bb9700 (LWP 23099)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007f4a529d96ef in g_cond_wait () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4a3f50fbcb in gst_task_func (task=0x7f4a2001e4d0) at gsttask.c:320
#3  0x00007f4a529bc010 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f4a529bb645 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f4a52e7d7fc in start_thread (arg=0x7f4a33bb9700) at pthread_create.c:465
#6  0x00007f4a55605b5f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f4a311a7700 (LWP 23098)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007f4a529d96ef in g_cond_wait () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4a3f50fbcb in gst_task_func (task=0x7f4a2c05f830) at gsttask.c:320
#3  0x00007f4a529bc010 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f4a529bb645 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f4a52e7d7fc in start_thread (arg=0x7f4a311a7700) at pthread_create.c:465
#6  0x00007f4a55605b5f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f4a45a3e700 (LWP 21814)):
#0  0x00007f4a555f506d in __GI___libc_read (fd=14, buf=0x7f4a45a3da10, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:26
#1  0x00007f4a529d8280 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4a52993c4b in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4a52994110 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f4a5299427c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f4a55e1222e in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#6  0x00007f4a55de012f in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#7  0x00007f4a55de0495 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#8  0x00007f4a55ccf549 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#9  0x00007f4a55dc01c3 in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#10 0x00007f4a55cd1e3c in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#11 0x00007f4a52e7d7fc in start_thread (arg=0x7f4a45a3e700) at pthread_create.c:465
#12 0x00007f4a55605b5f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f4a58551e80 (LWP 21813)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007f4a529d8d7c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4a3e302630 in gst_base_sink_set_flushing (basesink=basesink@entry=0x556fe86544b0, flushing=flushing@entry=1, pad=<optimized out>) at gstbasesink.c:4144
#3  0x00007f4a3e302eef in gst_base_sink_pad_activate_push (pad=<optimized out>, active=<optimized out>, parent=0x556fe86544b0) at gstbasesink.c:4303
#4  gst_base_sink_pad_activate_mode (pad=<optimized out>, parent=0x556fe86544b0, mode=<optimized out>, active=<optimized out>) at gstbasesink.c:4445
#5  0x00007f4a3f4e01f0 in activate_mode_internal (pad=pad@entry=0x7f4a14035240, parent=parent@entry=0x556fe86544b0, mode=mode@entry=GST_PAD_MODE_PUSH, active=active@entry=0) at gstpad.c:1179
#6  0x00007f4a3f4e0bc5 in gst_pad_set_active (pad=pad@entry=0x7f4a14035240, active=0) at gstpad.c:1080
#7  0x00007f4a3f4bf91d in activate_pads (vpad=<optimized out>, ret=0x7ffd0fa348a0, active=0x7ffd0fa348fc) at gstelement.c:2831
#8  0x00007f4a3f4d1674 in gst_iterator_fold (it=it@entry=0x556fe8595150, func=func@entry=0x7f4a3f4bf900 <activate_pads>, ret=ret@entry=0x7ffd0fa348a0, user_data=user_data@entry=0x7ffd0fa348fc) at gstiterator.c:617
#9  0x00007f4a3f4c0426 in iterator_activate_fold_with_resync (iter=iter@entry=0x556fe8595150, user_data=user_data@entry=0x7ffd0fa348fc, func=0x7f4a3f4bf900 <activate_pads>) at gstelement.c:2855
#10 0x00007f4a3f4c214e in gst_element_pads_activate (element=element@entry=0x556fe86544b0, active=<optimized out>, active@entry=0) at gstelement.c:2899
#11 0x00007f4a3f4c23f6 in gst_element_change_state_func (element=0x556fe86544b0, transition=<optimized out>) at gstelement.c:2965
#12 0x00007f4a3e301966 in gst_base_sink_change_state (element=0x556fe86544b0, transition=GST_STATE_CHANGE_PAUSED_TO_READY) at gstbasesink.c:5138
#13 0x00007f4a3b082111 in gst_fake_sink_change_state (element=0x556fe86544b0, transition=GST_STATE_CHANGE_PAUSED_TO_READY) at gstfakesink.c:567
#14 0x00007f4a3f4c430e in gst_element_change_state (element=element@entry=0x556fe86544b0, transition=transition@entry=GST_STATE_CHANGE_PAUSED_TO_READY) at gstelement.c:2743
#15 0x00007f4a3f4c4a49 in gst_element_set_state_func (element=0x556fe86544b0, state=GST_STATE_READY) at gstelement.c:2697
#16 0x00007f4a3f4a2bd2 in gst_bin_element_set_state (next=GST_STATE_READY, current=GST_STATE_PAUSED, start_time=0, base_time=99026882075845, element=0x556fe86544b0, bin=0x556fe858e430) at gstbin.c:2589
#17 gst_bin_change_state_func (element=0x556fe858e430, transition=GST_STATE_CHANGE_PAUSED_TO_READY) at gstbin.c:2931
#18 0x00007f4a3b2ccb3c in ?? () from /usr/lib/x86_64-linux-gnu/gstreamer-1.0/libgstautodetect.so
#19 0x00007f4a3f4c430e in gst_element_change_state (element=element@entry=0x556fe858e430, transition=transition@entry=GST_STATE_CHANGE_PAUSED_TO_READY) at gstelement.c:2743
#20 0x00007f4a3f4c4a49 in gst_element_set_state_func (element=0x556fe858e430, state=GST_STATE_READY) at gstelement.c:2697
#21 0x00007f4a3f4a2bd2 in gst_bin_element_set_state (next=GST_STATE_READY, current=GST_STATE_PAUSED, start_time=0, base_time=99026882075845, element=0x556fe858e430, bin=0x556fe85c9510) at gstbin.c:2589
#22 gst_bin_change_state_func (element=0x556fe85c9510, transition=GST_STATE_CHANGE_PAUSED_TO_READY) at gstbin.c:2931
#23 0x00007f4a3f4c430e in gst_element_change_state (element=element@entry=0x556fe85c9510, transition=transition@entry=GST_STATE_CHANGE_PAUSED_TO_READY) at gstelement.c:2743
#24 0x00007f4a3f4c4a49 in gst_element_set_state_func (element=0x556fe85c9510, state=GST_STATE_NULL) at gstelement.c:2697
#25 0x00007f4a3f7c5aad in Phonon::Gstreamer::AudioOutput::~AudioOutput() () from /usr/lib/x86_64-linux-gnu/qt4/plugins/phonon_backend/phonon_gstreamer.so
#26 0x00007f4a3f7c5b49 in Phonon::Gstreamer::AudioOutput::~AudioOutput() () from /usr/lib/x86_64-linux-gnu/qt4/plugins/phonon_backend/phonon_gstreamer.so
#27 0x00007f4a58148bd4 in Phonon::MediaNodePrivate::deleteBackendObject() () from /usr/lib/x86_64-linux-gnu/libphonon.so.4
#28 0x00007f4a5813342d in Phonon::FactoryPrivate::~FactoryPrivate() () from /usr/lib/x86_64-linux-gnu/libphonon.so.4
#29 0x00007f4a58133719 in Phonon::FactoryPrivate::~FactoryPrivate() () from /usr/lib/x86_64-linux-gnu/libphonon.so.4
#30 0x00007f4a5552cec0 in __run_exit_handlers (status=1, listp=0x7f4a558cb6f8 <__exit_funcs>, run_list_atexit=run_list_atexit@entry=true, run_dtors=run_dtors@entry=true) at exit.c:83
#31 0x00007f4a5552cf1a in __GI_exit (status=<optimized out>) at exit.c:105
#32 0x00007f4a56acc1e8 in ?? () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#33 0x00007f4a577baa80 in KApplication::xioErrhandler(_XDisplay*) () from /usr/lib/libkdeui.so.5
#34 0x00007f4a541c6d3e in _XIOError () from /usr/lib/x86_64-linux-gnu/libX11.so.6
#35 0x00007f4a541c459d in _XEventsQueued () from /usr/lib/x86_64-linux-gnu/libX11.so.6
#36 0x00007f4a541b61d9 in XEventsQueued () from /usr/lib/x86_64-linux-gnu/libX11.so.6
#37 0x00007f4a56b0a0ac in ?? () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#38 0x00007f4a52993b71 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#39 0x00007f4a52994110 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#40 0x00007f4a5299427c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#41 0x00007f4a55e1220e in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#42 0x00007f4a56b0a666 in ?? () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#43 0x00007f4a55de012f in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#44 0x00007f4a55de0495 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#45 0x00007f4a55de6459 in QCoreApplication::exec() () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#46 0x0000556fe6e07e35 in ?? ()
#47 0x00007f4a555121c1 in __libc_start_main (main=0x556fe6e07850, argc=1, argv=0x7ffd0fa353a8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffd0fa35398) at ../csu/libc-start.c:308
#48 0x0000556fe6e0803a in _start ()

Reported using DrKonqi
Comment 1 Christoph Feck 2018-05-17 01:14:17 UTC 
Qt4 and KDE4 are no longer maintained. Please ask in a forum of your distribution how to update to newer versions of KDE software.