Application: kontact (5.1.1)

Qt Version: 5.5.1
Operating System: Linux 4.4.0-15-generic x86_64
Distribution: Ubuntu Xenial Xerus (development branch)

-- Information about the crash:
Every time I open a feed with a video inside, the feed list display gets corrupted
(1st line truncated; if i reduce & reopen the window, a black rectangle appears on the top left corner).
Then if I navigate in the list & come back to the one with video, I get the crash.

The crash can be reproduced sometimes.

-- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f3b53711940 (LWP 1884))]

Thread 22 (Thread 0x7f3b2e82b700 (LWP 1923)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f3b4ed3388b in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#2  0x00007f3b4ed338c9 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#3  0x00007f3b4aaf76ca in start_thread (arg=0x7f3b2e82b700) at pthread_create.c:333
#4  0x00007f3b50abcead in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 21 (Thread 0x7f3aed105700 (LWP 1931)):
#0  0x00007f3b50ab119d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f3b4a2cd31c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f3b4a2cd42c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f3b515f3a4f in QEventDispatcherGlib::processEvents (this=0x7f3ae80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007f3b5159ad7a in QEventLoop::exec (this=this@entry=0x7f3aed104c80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f3b513b7854 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007f3b513bc7fe in QThreadPrivate::start (arg=0x7a1ba0) at thread/qthread_unix.cpp:331
#7  0x00007f3b4aaf76ca in start_thread (arg=0x7f3aed105700) at pthread_create.c:333
#8  0x00007f3b50abcead in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 20 (Thread 0x7f3ae6bfe700 (LWP 1932)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f3b4ea41a74 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#2  0x00007f3b4ed63541 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#3  0x00007f3b4aaf76ca in start_thread (arg=0x7f3ae6bfe700) at pthread_create.c:333
#4  0x00007f3b50abcead in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 19 (Thread 0x7f3ae63fd700 (LWP 1933)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f3b4ea42aa3 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#2  0x00007f3b4ed63541 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#3  0x00007f3b4aaf76ca in start_thread (arg=0x7f3ae63fd700) at pthread_create.c:333
#4  0x00007f3b50abcead in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 18 (Thread 0x7f3addbfc700 (LWP 1934)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f3b4ea42aa3 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#2  0x00007f3b4ed63541 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#3  0x00007f3b4aaf76ca in start_thread (arg=0x7f3addbfc700) at pthread_create.c:333
#4  0x00007f3b50abcead in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 17 (Thread 0x7f3ae5bfc700 (LWP 1935)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f3b4ea42aa3 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#2  0x00007f3b4ed63541 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#3  0x00007f3b4aaf76ca in start_thread (arg=0x7f3ae5bfc700) at pthread_create.c:333
#4  0x00007f3b50abcead in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 16 (Thread 0x7f3acb3d7700 (LWP 1946)):
#0  0x00007f3b50ab119d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f3b4a2cd31c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f3b4a2cd42c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f3b515f3a4f in QEventDispatcherGlib::processEvents (this=0x7f3abc0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007f3b5159ad7a in QEventLoop::exec (this=this@entry=0x7f3acb3d6c80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f3b513b7854 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007f3b513bc7fe in QThreadPrivate::start (arg=0xaf6fa0) at thread/qthread_unix.cpp:331
#7  0x00007f3b4aaf76ca in start_thread (arg=0x7f3acb3d7700) at pthread_create.c:333
#8  0x00007f3b50abcead in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 15 (Thread 0x7f3acabd6700 (LWP 1947)):
#0  0x00007f3b50ab119d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f3b4a2cd31c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f3b4a2cd42c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f3b515f3a4f in QEventDispatcherGlib::processEvents (this=0x7f3ac40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007f3b5159ad7a in QEventLoop::exec (this=this@entry=0x7f3acabd5c80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f3b513b7854 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007f3b513bc7fe in QThreadPrivate::start (arg=0xad5610) at thread/qthread_unix.cpp:331
#7  0x00007f3b4aaf76ca in start_thread (arg=0x7f3acabd6700) at pthread_create.c:333
#8  0x00007f3b50abcead in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 14 (Thread 0x7f3ac1091700 (LWP 2224)):
#0  0x00007f3b50ab119d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f3b4a2cd31c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f3b4a2cd42c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f3b515f3a4f in QEventDispatcherGlib::processEvents (this=0x7f3ab80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007f3b5159ad7a in QEventLoop::exec (this=this@entry=0x7f3ac1090c80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f3b513b7854 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007f3b513bc7fe in QThreadPrivate::start (arg=0x1217b60) at thread/qthread_unix.cpp:331
#7  0x00007f3b4aaf76ca in start_thread (arg=0x7f3ac1091700) at pthread_create.c:333
#8  0x00007f3b50abcead in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 13 (Thread 0x7f3ac0890700 (LWP 2226)):
#0  0x00007f3b50ab119d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f3b4a2cd31c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f3b4a2cd42c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f3b515f3a4f in QEventDispatcherGlib::processEvents (this=0x7f3ab00008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007f3b5159ad7a in QEventLoop::exec (this=this@entry=0x7f3ac088fc80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f3b513b7854 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007f3b513bc7fe in QThreadPrivate::start (arg=0x1212b20) at thread/qthread_unix.cpp:331
#7  0x00007f3b4aaf76ca in start_thread (arg=0x7f3ac0890700) at pthread_create.c:333
#8  0x00007f3b50abcead in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 12 (Thread 0x7f3ab7fff700 (LWP 2228)):
#0  0x00007f3b50ab119d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f3b4a2cd31c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f3b4a2cd42c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f3b515f3a4f in QEventDispatcherGlib::processEvents (this=0x7f3aac0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007f3b5159ad7a in QEventLoop::exec (this=this@entry=0x7f3ab7ffec80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f3b513b7854 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007f3b513bc7fe in QThreadPrivate::start (arg=0x1213dd0) at thread/qthread_unix.cpp:331
#7  0x00007f3b4aaf76ca in start_thread (arg=0x7f3ab7fff700) at pthread_create.c:333
#8  0x00007f3b50abcead in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 11 (Thread 0x7f3ab77fe700 (LWP 2229)):
#0  0x00007f3b50ab119d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f3b4a2cd31c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f3b4a2cd42c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f3b515f3a4f in QEventDispatcherGlib::processEvents (this=0x7f3aa40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007f3b5159ad7a in QEventLoop::exec (this=this@entry=0x7f3ab77fdc80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f3b513b7854 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007f3b513bc7fe in QThreadPrivate::start (arg=0x15cfd60) at thread/qthread_unix.cpp:331
#7  0x00007f3b4aaf76ca in start_thread (arg=0x7f3ab77fe700) at pthread_create.c:333
#8  0x00007f3b50abcead in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 10 (Thread 0x7f3ab6ffd700 (LWP 2232)):
#0  0x00007f3b50ab119d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f3b4a2cd31c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f3b4a2cd42c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f3b515f3a4f in QEventDispatcherGlib::processEvents (this=0x7f3aa80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007f3b5159ad7a in QEventLoop::exec (this=this@entry=0x7f3ab6ffcc80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f3b513b7854 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007f3b513bc7fe in QThreadPrivate::start (arg=0x15cf680) at thread/qthread_unix.cpp:331
#7  0x00007f3b4aaf76ca in start_thread (arg=0x7f3ab6ffd700) at pthread_create.c:333
#8  0x00007f3b50abcead in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 9 (Thread 0x7f3ab67fc700 (LWP 2234)):
#0  0x00007f3b50ab119d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f3b4a2cd31c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f3b4a2cd42c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f3b515f3a4f in QEventDispatcherGlib::processEvents (this=0x7f3a9c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007f3b5159ad7a in QEventLoop::exec (this=this@entry=0x7f3ab67fbc80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f3b513b7854 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007f3b513bc7fe in QThreadPrivate::start (arg=0x11fd440) at thread/qthread_unix.cpp:331
#7  0x00007f3b4aaf76ca in start_thread (arg=0x7f3ab67fc700) at pthread_create.c:333
#8  0x00007f3b50abcead in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 8 (Thread 0x7f3ab5ffb700 (LWP 2236)):
#0  0x00007f3b50ab119d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f3b4a2cd31c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f3b4a2cd42c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f3b515f3a4f in QEventDispatcherGlib::processEvents (this=0x7f3aa00008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007f3b5159ad7a in QEventLoop::exec (this=this@entry=0x7f3ab5ffac80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f3b513b7854 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007f3b513bc7fe in QThreadPrivate::start (arg=0x11f7a40) at thread/qthread_unix.cpp:331
#7  0x00007f3b4aaf76ca in start_thread (arg=0x7f3ab5ffb700) at pthread_create.c:333
#8  0x00007f3b50abcead in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7f3ab57fa700 (LWP 2237)):
#0  0x00007f3b50ab119d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f3b4a2cd31c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f3b4a2cd42c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f3b515f3a4f in QEventDispatcherGlib::processEvents (this=0x7f3a940008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007f3b5159ad7a in QEventLoop::exec (this=this@entry=0x7f3ab57f9c80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f3b513b7854 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007f3b513bc7fe in QThreadPrivate::start (arg=0x1606220) at thread/qthread_unix.cpp:331
#7  0x00007f3b4aaf76ca in start_thread (arg=0x7f3ab57fa700) at pthread_create.c:333
#8  0x00007f3b50abcead in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7f3ab4ff9700 (LWP 2238)):
#0  0x00007f3b50ab119d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f3b4a2cd31c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f3b4a2cd42c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f3b515f3a4f in QEventDispatcherGlib::processEvents (this=0x7f3a980008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007f3b5159ad7a in QEventLoop::exec (this=this@entry=0x7f3ab4ff8c80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f3b513b7854 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007f3b513bc7fe in QThreadPrivate::start (arg=0x160ab90) at thread/qthread_unix.cpp:331
#7  0x00007f3b4aaf76ca in start_thread (arg=0x7f3ab4ff9700) at pthread_create.c:333
#8  0x00007f3b50abcead in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7f3a93fff700 (LWP 2280)):
#0  0x00007f3b50ab119d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f3b4a2cd31c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f3b4a2cd42c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f3b515f3a4f in QEventDispatcherGlib::processEvents (this=0x7f3a8c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007f3b5159ad7a in QEventLoop::exec (this=this@entry=0x7f3a93ffec80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f3b513b7854 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007f3b513bc7fe in QThreadPrivate::start (arg=0x1ac0d70) at thread/qthread_unix.cpp:331
#7  0x00007f3b4aaf76ca in start_thread (arg=0x7f3a93fff700) at pthread_create.c:333
#8  0x00007f3b50abcead in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7f3a937fe700 (LWP 2288)):
#0  0x00007f3b50ab119d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f3b4a2cd31c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f3b4a2cd42c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f3b515f3a4f in QEventDispatcherGlib::processEvents (this=0x7f3a840008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007f3b5159ad7a in QEventLoop::exec (this=this@entry=0x7f3a937fdc80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f3b513b7854 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007f3b513bc7fe in QThreadPrivate::start (arg=0x1be02e0) at thread/qthread_unix.cpp:331
#7  0x00007f3b4aaf76ca in start_thread (arg=0x7f3a937fe700) at pthread_create.c:333
#8  0x00007f3b50abcead in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7f3a90c2f700 (LWP 2390)):
#0  0x00007f3b50ab119d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f3b4a2cd31c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f3b4a2cd42c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f3b515f3a4f in QEventDispatcherGlib::processEvents (this=0x7f3a880008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007f3b5159ad7a in QEventLoop::exec (this=this@entry=0x7f3a90c2ec80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f3b513b7854 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007f3b513bc7fe in QThreadPrivate::start (arg=0x70af80) at thread/qthread_unix.cpp:331
#7  0x00007f3b4aaf76ca in start_thread (arg=0x7f3a90c2f700) at pthread_create.c:333
#8  0x00007f3b50abcead in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f3a6d3dd700 (LWP 4115)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00007f3b513bd9d6 in QWaitConditionPrivate::wait_relative (time=30000, this=0x1aba9a0) at thread/qwaitcondition_unix.cpp:126
#2  QWaitConditionPrivate::wait (time=30000, this=0x1aba9a0) at thread/qwaitcondition_unix.cpp:134
#3  QWaitCondition::wait (this=this@entry=0x1012fb0, mutex=mutex@entry=0xf12d90, time=30000) at thread/qwaitcondition_unix.cpp:208
#4  0x00007f3b513b9483 in QThreadPoolThread::run (this=0x1012fa0) at thread/qthreadpool.cpp:127
#5  0x00007f3b513bc7fe in QThreadPrivate::start (arg=0x1012fa0) at thread/qthread_unix.cpp:331
#6  0x00007f3b4aaf76ca in start_thread (arg=0x7f3a6d3dd700) at pthread_create.c:333
#7  0x00007f3b50abcead in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f3b53711940 (LWP 1884)):
[KCrash Handler]
#6  0x00007f3b3747fb38 in QXcbWindow::setParent (this=0x295cd40, parent=0x0) at qxcbwindow.cpp:1496
#7  0x00007f3b518e5f1b in QWindow::setParent (this=0x27dc5e0, parent=parent@entry=0x1a8c6b0) at kernel/qwindow.cpp:615
#8  0x00007f3b5211b155 in QWidgetPrivate::setParent_sys (this=this@entry=0x6bf640, newparent=newparent@entry=0x2871e90, f=...) at kernel/qwidget.cpp:10543
#9  0x00007f3b52126b3a in QWidget::setParent (this=0xfcc1c0, parent=0x2871e90, f=...) at kernel/qwidget.cpp:10398
#10 0x00007f3b52127c2c in QWidget::setParent (this=<optimized out>, parent=<optimized out>) at kernel/qwidget.cpp:10334
#11 0x00007f3ac2934c39 in ?? () from /usr/lib/x86_64-linux-gnu/libKF5KHtml.so.5
#12 0x00007f3ac289dac2 in ?? () from /usr/lib/x86_64-linux-gnu/libKF5KHtml.so.5
#13 0x00007f3ac284b0c6 in ?? () from /usr/lib/x86_64-linux-gnu/libKF5KHtml.so.5
#14 0x00007f3ac284d5fe in ?? () from /usr/lib/x86_64-linux-gnu/libKF5KHtml.so.5
#15 0x00007f3ac284e02d in ?? () from /usr/lib/x86_64-linux-gnu/libKF5KHtml.so.5
#16 0x00007f3ac28543f5 in ?? () from /usr/lib/x86_64-linux-gnu/libKF5KHtml.so.5
#17 0x00007f3ac285602a in ?? () from /usr/lib/x86_64-linux-gnu/libKF5KHtml.so.5
#18 0x00007f3ac27926e9 in KHTMLPart::write(QString const&) () from /usr/lib/x86_64-linux-gnu/libKF5KHtml.so.5
#19 0x00007f3ac37623a3 in Akregator::ArticleViewer::renderContent(QString const&) () from /usr/lib/x86_64-linux-gnu/qt5/plugins/akregatorpart.so
#20 0x00007f3ac3762edb in Akregator::ArticleViewer::showArticle(Akregator::Article const&) () from /usr/lib/x86_64-linux-gnu/qt5/plugins/akregatorpart.so
#21 0x00007f3ac378db7e in Akregator::MainWidget::slotArticleSelected(Akregator::Article const&) () from /usr/lib/x86_64-linux-gnu/qt5/plugins/akregatorpart.so
#22 0x00007f3b515cbe1f in QtPrivate::QSlotObjectBase::call (a=0x7ffdf19f8830, r=0x10b1860, this=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qobject_impl.h:124
#23 QMetaObject::activate (sender=0x10f4320, signalOffset=<optimized out>, local_signal_index=<optimized out>, argv=<optimized out>) at kernel/qobject.cpp:3698
#24 0x00007f3ac37a49d5 in ?? () from /usr/lib/x86_64-linux-gnu/qt5/plugins/akregatorpart.so
#25 0x00007f3ac3748af8 in ?? () from /usr/lib/x86_64-linux-gnu/qt5/plugins/akregatorpart.so
#26 0x00007f3b515cbe1f in QtPrivate::QSlotObjectBase::call (a=0x7ffdf19f8990, r=0x10f4320, this=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qobject_impl.h:124
#27 QMetaObject::activate (sender=sender@entry=0x19cb7e0, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffdf19f8990) at kernel/qobject.cpp:3698
#28 0x00007f3b515cc7a7 in QMetaObject::activate (sender=sender@entry=0x19cb7e0, m=m@entry=0x7f3b517e3160 <QItemSelectionModel::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffdf19f8990) at kernel/qobject.cpp:3578
#29 0x00007f3b5154df57 in QItemSelectionModel::selectionChanged (this=this@entry=0x19cb7e0, _t1=..., _t2=...) at .moc/moc_qitemselectionmodel.cpp:473
#30 0x00007f3b5155239b in QItemSelectionModel::emitSelectionChanged (this=this@entry=0x19cb7e0, newSelection=..., oldSelection=...) at itemmodels/qitemselectionmodel.cpp:1801
#31 0x00007f3b51554834 in QItemSelectionModel::select (this=0x19cb7e0, selection=..., command=...) at itemmodels/qitemselectionmodel.cpp:1288
#32 0x00007f3b52384d58 in QTreeViewPrivate::select (this=this@entry=0x10e9bf0, topIndex=..., bottomIndex=..., command=..., command@entry=...) at itemviews/qtreeview.cpp:3878
#33 0x00007f3b52385338 in QTreeView::setSelection (this=<optimized out>, rect=..., command=...) at itemviews/qtreeview.cpp:2377
#34 0x00007f3b52342fed in QAbstractItemView::mousePressEvent (this=this@entry=0x10e9b70, event=event@entry=0x7ffdf19f9670) at itemviews/qabstractitemview.cpp:1733
#35 0x00007f3b52389837 in QTreeView::mousePressEvent (this=0x10e9b70, event=0x7ffdf19f9670) at itemviews/qtreeview.cpp:1907
#36 0x00007f3ac3752615 in Akregator::ArticleListView::mousePressEvent(QMouseEvent*) () from /usr/lib/x86_64-linux-gnu/qt5/plugins/akregatorpart.so
#37 0x00007f3b521263cf in QWidget::event (this=this@entry=0x10e9b70, event=event@entry=0x7ffdf19f9670) at kernel/qwidget.cpp:8674
#38 0x00007f3b52224b2e in QFrame::event (this=0x10e9b70, e=0x7ffdf19f9670) at widgets/qframe.cpp:540
#39 0x00007f3b5234a5ab in QAbstractItemView::viewportEvent (this=this@entry=0x10e9b70, event=event@entry=0x7ffdf19f9670) at itemviews/qabstractitemview.cpp:1685
#40 0x00007f3b523890cc in QTreeView::viewportEvent (this=0x10e9b70, event=0x7ffdf19f9670) at itemviews/qtreeview.cpp:1309
#41 0x00007f3b5159d3a2 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=this@entry=0x69cd40, receiver=receiver@entry=0x10ea5a0, event=event@entry=0x7ffdf19f9670) at kernel/qcoreapplication.cpp:1072
#42 0x00007f3b520e303c in QApplicationPrivate::notify_helper (this=this@entry=0x69cd40, receiver=receiver@entry=0x10ea5a0, e=e@entry=0x7ffdf19f9670) at kernel/qapplication.cpp:3712
#43 0x00007f3b520e8c19 in QApplication::notify (this=<optimized out>, receiver=0x10ea5a0, e=0x7ffdf19f9670) at kernel/qapplication.cpp:3276
#44 0x00007f3b5159d5bb in QCoreApplication::notifyInternal (this=0x7ffdf19fa0a0, receiver=receiver@entry=0x10ea5a0, event=event@entry=0x7ffdf19f9670) at kernel/qcoreapplication.cpp:965
#45 0x00007f3b520e7b32 in QCoreApplication::sendSpontaneousEvent (event=0x7ffdf19f9670, receiver=0x10ea5a0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:227
#46 QApplicationPrivate::sendMouseEvent (receiver=receiver@entry=0x10ea5a0, event=event@entry=0x7ffdf19f9670, alienWidget=alienWidget@entry=0x10ea5a0, nativeWidget=0x10e9b70, buttonDown=buttonDown@entry=0x7f3b52613b20 <qt_button_down>, lastMouseReceiver=..., spontaneous=true) at kernel/qapplication.cpp:2770
#47 0x00007f3b5214057b in QWidgetWindow::handleMouseEvent (this=this@entry=0x1ac1d70, event=event@entry=0x7ffdf19f9a80) at kernel/qwidgetwindow.cpp:555
#48 0x00007f3b52142b3b in QWidgetWindow::event (this=0x1ac1d70, event=0x7ffdf19f9a80) at kernel/qwidgetwindow.cpp:210
#49 0x00007f3b520e305c in QApplicationPrivate::notify_helper (this=this@entry=0x69cd40, receiver=receiver@entry=0x1ac1d70, e=e@entry=0x7ffdf19f9a80) at kernel/qapplication.cpp:3716
#50 0x00007f3b520e8516 in QApplication::notify (this=0x7ffdf19fa0a0, receiver=0x1ac1d70, e=0x7ffdf19f9a80) at kernel/qapplication.cpp:3499
#51 0x00007f3b5159d5bb in QCoreApplication::notifyInternal (this=0x7ffdf19fa0a0, receiver=receiver@entry=0x1ac1d70, event=event@entry=0x7ffdf19f9a80) at kernel/qcoreapplication.cpp:965
#52 0x00007f3b518df521 in QCoreApplication::sendSpontaneousEvent (event=0x7ffdf19f9a80, receiver=0x1ac1d70) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:227
#53 QGuiApplicationPrivate::processMouseEvent (e=0x1a097f0) at kernel/qguiapplication.cpp:1804
#54 0x00007f3b518e11e5 in QGuiApplicationPrivate::processWindowSystemEvent (e=e@entry=0x1a097f0) at kernel/qguiapplication.cpp:1596
#55 0x00007f3b518c4f38 in QWindowSystemInterface::sendWindowSystemEvents (flags=...) at kernel/qwindowsysteminterface.cpp:625
#56 0x00007f3b37499d70 in userEventSourceDispatch (source=<optimized out>) at eventdispatchers/qeventdispatcher_glib.cpp:70
#57 0x00007f3b4a2cd127 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#58 0x00007f3b4a2cd380 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#59 0x00007f3b4a2cd42c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#60 0x00007f3b515f3a4f in QEventDispatcherGlib::processEvents (this=0x6ddf40, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#61 0x00007f3b5159ad7a in QEventLoop::exec (this=this@entry=0x7ffdf19f9e00, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#62 0x00007f3b515a2e1c in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1229
#63 0x0000000000404ae9 in main ()

Possible duplicates by query: bug 360820, bug 357519, bug 356867, bug 356718.

Reported using DrKonqi