Bug 368095

Summary: Kontact has crashed when synchronising large IMAP folders
Product: [Applications] kontact Reporter: Thomas Dreibholz <dreibh>
Component: generalAssignee: kdepim bugs <kdepim-bugs>
Status: RESOLVED DUPLICATE    
Severity: crash Keywords: drkonqi
Priority: NOR    
Version: unspecified   
Target Milestone: ---   
Platform: unspecified   
OS: Linux   
Latest Commit: Version Fixed In:

Description Thomas Dreibholz 2016-09-01 10:10:36 UTC 
Application: kontact (5.3.0 (QtWebEngine))

Qt Version: 5.7.0
Frameworks Version: 5.25.0
Operating System: Linux 4.4.0-36-generic x86_64
Distribution: KDE neon User Edition 5.7

-- Information about the crash:
- What I was doing when the application crashed:

Kontact has crashed when synchronising large IMAP folders.

-- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
[Current thread is 1 (Thread 0x7fb6583209c0 (LWP 5387))]

Thread 40 (Thread 0x7fb4c5ff9700 (LWP 5629)):
#0  0x00007fb6783df3a0 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fb552dd6863 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#2  0x00007fb5530f7051 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#3  0x00007fb6783d96fa in start_thread (arg=0x7fb4c5ff9700) at pthread_create.c:333
#4  0x00007fb67b9adb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 39 (Thread 0x7fb4c67fa700 (LWP 5628)):
#0  0x00007fb6783df3a0 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fb552dd6863 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#2  0x00007fb5530f7051 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#3  0x00007fb6783d96fa in start_thread (arg=0x7fb4c67fa700) at pthread_create.c:333
#4  0x00007fb67b9adb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 38 (Thread 0x7fb4c6ffb700 (LWP 5627)):
#0  0x00007fb6783df3a0 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fb552dd6863 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#2  0x00007fb5530f7051 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#3  0x00007fb6783d96fa in start_thread (arg=0x7fb4c6ffb700) at pthread_create.c:333
#4  0x00007fb67b9adb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 37 (Thread 0x7fb4c77fc700 (LWP 5626)):
#0  0x00007fb6783df3a0 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fb552dd6863 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#2  0x00007fb5530f7051 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#3  0x00007fb6783d96fa in start_thread (arg=0x7fb4c77fc700) at pthread_create.c:333
#4  0x00007fb67b9adb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 36 (Thread 0x7fb4c7ffd700 (LWP 5625)):
#0  0x00007fb6783df3a0 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fb552dd6863 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#2  0x00007fb5530f7051 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#3  0x00007fb6783d96fa in start_thread (arg=0x7fb4c7ffd700) at pthread_create.c:333
#4  0x00007fb67b9adb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 35 (Thread 0x7fb50ca0c700 (LWP 5624)):
#0  0x00007fb6783df3a0 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fb552dd6863 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#2  0x00007fb5530f7051 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#3  0x00007fb6783d96fa in start_thread (arg=0x7fb50ca0c700) at pthread_create.c:333
#4  0x00007fb67b9adb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 34 (Thread 0x7fb50d20d700 (LWP 5623)):
#0  0x00007fb6783df3a0 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fb552dd5834 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#2  0x00007fb5530f7051 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#3  0x00007fb6783d96fa in start_thread (arg=0x7fb50d20d700) at pthread_create.c:333
#4  0x00007fb67b9adb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 33 (Thread 0x7fb50da0e700 (LWP 5622)):
#0  0x00007fb6783df3a0 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fb5530c742b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#2  0x00007fb5530c7469 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#3  0x00007fb6783d96fa in start_thread (arg=0x7fb50da0e700) at pthread_create.c:333
#4  0x00007fb67b9adb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 32 (Thread 0x7fb50f05e700 (LWP 5610)):
#0  0x00007fb6764b3ac9 in g_mutex_lock (mutex=mutex@entry=0x7fb508000990) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gthread-posix.c:1335
#1  0x00007fb67646eddc in g_main_context_check (context=context@entry=0x7fb508000990, max_priority=2147483647, fds=fds@entry=0x7fb508002a20, n_fds=n_fds@entry=1) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3683
#2  0x00007fb67646f340 in g_main_context_iterate (context=context@entry=0x7fb508000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3837
#3  0x00007fb67646f4ac in g_main_context_iteration (context=0x7fb508000990, may_block=1) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3901
#4  0x00007fb67c4e223b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fb67c48ccea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fb67c2b1fb4 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fb67c2b6b98 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fb6783d96fa in start_thread (arg=0x7fb50f05e700) at pthread_create.c:333
#9  0x00007fb67b9adb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 31 (Thread 0x7fb5160bd700 (LWP 5477)):
#0  0x00007fb67b9a1e8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fb67646f39c in g_main_context_iterate (priority=2147483647, n_fds=1, fds=0x7fb510003e10, timeout=<optimized out>, context=0x7fb510000990) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:4135
#2  0x00007fb67646f39c in g_main_context_iterate (context=context@entry=0x7fb510000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3835
#3  0x00007fb67646f4ac in g_main_context_iteration (context=0x7fb510000990, may_block=1) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3901
#4  0x00007fb67c4e223b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fb67c48ccea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fb67c2b1fb4 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fb67c2b6b98 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fb6783d96fa in start_thread (arg=0x7fb5160bd700) at pthread_create.c:333
#9  0x00007fb67b9adb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 30 (Thread 0x7fb5221d7700 (LWP 5469)):
#0  0x00007fb6783df3a0 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fb66fe707af in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#2  0x00007fb66fe70dc9 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#3  0x00007fb66fe70f80 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007fb66fe6d947 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007fb6783d96fa in start_thread (arg=0x7fb5221d7700) at pthread_create.c:333
#6  0x00007fb67b9adb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 29 (Thread 0x7fb529488700 (LWP 5443)):
#0  0x00007fb67b9a1e8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fb67646f39c in g_main_context_iterate (priority=2147483647, n_fds=1, fds=0x7fb51c003020, timeout=<optimized out>, context=0x7fb51c000990) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:4135
#2  0x00007fb67646f39c in g_main_context_iterate (context=context@entry=0x7fb51c000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3835
#3  0x00007fb67646f4ac in g_main_context_iteration (context=0x7fb51c000990, may_block=1) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3901
#4  0x00007fb67c4e223b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fb67c48ccea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fb67c2b1fb4 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fb67c2b6b98 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fb6783d96fa in start_thread (arg=0x7fb529488700) at pthread_create.c:333
#9  0x00007fb67b9adb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 28 (Thread 0x7fb529c89700 (LWP 5441)):
#0  0x00007fb6764b3ae0 in g_mutex_unlock (mutex=0x7fb524000990) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gthread-posix.c:1344
#1  0x00007fb67646ec09 in g_main_context_query (context=context@entry=0x7fb524000990, max_priority=2147483647, timeout=timeout@entry=0x7fb529c88ac4, fds=fds@entry=0x7fb524003220, n_fds=n_fds@entry=2) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3589
#2  0x00007fb67646f317 in g_main_context_iterate (context=context@entry=0x7fb524000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3822
#3  0x00007fb67646f4ac in g_main_context_iteration (context=0x7fb524000990, may_block=1) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3901
#4  0x00007fb67c4e223b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fb67c48ccea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fb67c2b1fb4 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fb67c2b6b98 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fb6783d96fa in start_thread (arg=0x7fb529c89700) at pthread_create.c:333
#9  0x00007fb67b9adb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 27 (Thread 0x7fb53d1be700 (LWP 5433)):
#0  0x00007fb67b99d9cd in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fb6764b2740 in g_wakeup_acknowledge (__nbytes=16, __buf=0x7fb53d1bd9f0, __fd=<optimized out>) at /usr/include/x86_64-linux-gnu/bits/unistd.h:44
#2  0x00007fb6764b2740 in g_wakeup_acknowledge (wakeup=0x7fb52c002540) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gwakeup.c:210
#3  0x00007fb67646ee84 in g_main_context_check (context=context@entry=0x7fb530000990, max_priority=2147483647, fds=fds@entry=0x7fb530002e20, n_fds=n_fds@entry=1) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3632
#4  0x00007fb67646f340 in g_main_context_iterate (context=context@entry=0x7fb530000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3837
#5  0x00007fb67646f4ac in g_main_context_iteration (context=0x7fb530000990, may_block=1) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3901
#6  0x00007fb67c4e223b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fb67c48ccea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fb67c2b1fb4 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007fb67c2b6b98 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007fb6783d96fa in start_thread (arg=0x7fb53d1be700) at pthread_create.c:333
#11 0x00007fb67b9adb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 26 (Thread 0x7fb53d9bf700 (LWP 5431)):
#0  0x00007fb67c2ae009 in QMutex::lock() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#1  0x00007fb67c4e198f in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007fb67646e92d in g_main_context_prepare (context=context@entry=0x7fb52c000990, priority=priority@entry=0x7fb53d9beac0) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3442
#3  0x00007fb67646f2cb in g_main_context_iterate (context=context@entry=0x7fb52c000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3820
#4  0x00007fb67646f4ac in g_main_context_iteration (context=0x7fb52c000990, may_block=1) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3901
#5  0x00007fb67c4e223b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fb67c48ccea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fb67c2b1fb4 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fb67c2b6b98 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007fb6783d96fa in start_thread (arg=0x7fb53d9bf700) at pthread_create.c:333
#10 0x00007fb67b9adb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 25 (Thread 0x7fb53e600700 (LWP 5429)):
#0  0x00007fb6764b3ac9 in g_mutex_lock (mutex=mutex@entry=0x7fb534000990) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gthread-posix.c:1335
#1  0x00007fb67646e939 in g_main_context_prepare (context=context@entry=0x7fb534000990, priority=priority@entry=0x7fb53e5ffac0) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3444
#2  0x00007fb67646f2cb in g_main_context_iterate (context=context@entry=0x7fb534000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3820
#3  0x00007fb67646f4ac in g_main_context_iteration (context=0x7fb534000990, may_block=1) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3901
#4  0x00007fb67c4e223b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fb67c48ccea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fb67c2b1fb4 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fb67c2b6b98 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fb6783d96fa in start_thread (arg=0x7fb53e600700) at pthread_create.c:333
#9  0x00007fb67b9adb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 24 (Thread 0x7fb54dd59700 (LWP 5427)):
#0  0x00007fb67b99d9cd in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fb6764b2740 in g_wakeup_acknowledge (__nbytes=16, __buf=0x7fb54dd589f0, __fd=<optimized out>) at /usr/include/x86_64-linux-gnu/bits/unistd.h:44
#2  0x00007fb6764b2740 in g_wakeup_acknowledge (wakeup=0x7fb544002570) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gwakeup.c:210
#3  0x00007fb67646ee84 in g_main_context_check (context=context@entry=0x7fb538000990, max_priority=2147483647, fds=fds@entry=0x7fb538002e20, n_fds=n_fds@entry=1) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3632
#4  0x00007fb67646f340 in g_main_context_iterate (context=context@entry=0x7fb538000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3837
#5  0x00007fb67646f4ac in g_main_context_iteration (context=0x7fb538000990, may_block=1) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3901
#6  0x00007fb67c4e223b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fb67c48ccea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fb67c2b1fb4 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007fb67c2b6b98 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007fb6783d96fa in start_thread (arg=0x7fb54dd59700) at pthread_create.c:333
#11 0x00007fb67b9adb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 23 (Thread 0x7fb54e55a700 (LWP 5425)):
#0  0x00007fb6764b3ae4 in g_mutex_unlock (mutex=0x7fb544000990) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gthread-posix.c:1347
#1  0x00007fb67646e920 in g_main_context_prepare (context=context@entry=0x7fb544000990, priority=priority@entry=0x7fb54e559ac0) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3440
#2  0x00007fb67646f2cb in g_main_context_iterate (context=context@entry=0x7fb544000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3820
#3  0x00007fb67646f4ac in g_main_context_iteration (context=0x7fb544000990, may_block=1) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3901
#4  0x00007fb67c4e223b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fb67c48ccea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fb67c2b1fb4 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fb67c2b6b98 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fb6783d96fa in start_thread (arg=0x7fb54e55a700) at pthread_create.c:333
#9  0x00007fb67b9adb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 22 (Thread 0x7fb54ed5b700 (LWP 5423)):
#0  0x00007fb6764b3ac9 in g_mutex_lock (mutex=mutex@entry=0x7fb540000990) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gthread-posix.c:1335
#1  0x00007fb67646e474 in g_main_context_release (context=0x7fb540000990) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3248
#2  0x00007fb67646f356 in g_main_context_iterate (context=context@entry=0x7fb540000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3842
#3  0x00007fb67646f4ac in g_main_context_iteration (context=0x7fb540000990, may_block=1) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3901
#4  0x00007fb67c4e223b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fb67c48ccea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fb67c2b1fb4 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fb67c2b6b98 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fb6783d96fa in start_thread (arg=0x7fb54ed5b700) at pthread_create.c:333
#9  0x00007fb67b9adb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 21 (Thread 0x7fb54f55c700 (LWP 5422)):
#0  0x00007fb67b9a1e8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fb67646f39c in g_main_context_iterate (priority=2147483647, n_fds=1, fds=0x7fb548002e70, timeout=<optimized out>, context=0x7fb548000990) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:4135
#2  0x00007fb67646f39c in g_main_context_iterate (context=context@entry=0x7fb548000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3835
#3  0x00007fb67646f4ac in g_main_context_iteration (context=0x7fb548000990, may_block=1) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3901
#4  0x00007fb67c4e223b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fb67c48ccea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fb67c2b1fb4 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fb67c2b6b98 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fb6783d96fa in start_thread (arg=0x7fb54f55c700) at pthread_create.c:333
#9  0x00007fb67b9adb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 20 (Thread 0x7fb5e3ffd700 (LWP 5421)):
#0  0x00007fb6783df3a0 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fb6690a15c4 in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#2  0x00007fb6690a1609 in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#3  0x00007fb6783d96fa in start_thread (arg=0x7fb5e3ffd700) at pthread_create.c:333
#4  0x00007fb67b9adb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 19 (Thread 0x7fb60cff9700 (LWP 5414)):
#0  0x00007fb6783df3a0 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fb66fe707af in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#2  0x00007fb66fe70dc9 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#3  0x00007fb66fe70f80 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007fb66fe6d947 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007fb6783d96fa in start_thread (arg=0x7fb60cff9700) at pthread_create.c:333
#6  0x00007fb67b9adb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 18 (Thread 0x7fb60d7fa700 (LWP 5413)):
#0  0x00007fb6783df3a0 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fb66fe707af in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#2  0x00007fb66fe70dc9 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#3  0x00007fb66fe70f80 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007fb66fe6d947 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007fb6783d96fa in start_thread (arg=0x7fb60d7fa700) at pthread_create.c:333
#6  0x00007fb67b9adb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 17 (Thread 0x7fb60dffb700 (LWP 5412)):
#0  0x00007fb67b99da2d in write () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fb67b91fb2f in _IO_new_file_write (f=0x7fb67bc6b540 <_IO_2_1_stderr_>, data=0x7fb60dff7e50, n=41) at fileops.c:1263
#2  0x00007fb67b9202ba in _IO_new_file_xsputn (to_do=41, data=0x7fb60dff7e50 "[warn] epoll_wait: Ugyldig fildeskriptor\n", fp=0x7fb67bc6b540 <_IO_2_1_stderr_>) at fileops.c:518
#3  0x00007fb67b9202ba in _IO_new_file_xsputn (f=0x7fb67bc6b540 <_IO_2_1_stderr_>, data=<optimized out>, n=41) at fileops.c:1342
#4  0x00007fb67b8f6f54 in buffered_vfprintf (s=0x7fb67bc6b540 <_IO_2_1_stderr_>, format=<optimized out>, args=<optimized out>) at vfprintf.c:2341
#5  0x00007fb67b8f42ed in _IO_vfprintf_internal (s=s@entry=0x7fb67bc6b540 <_IO_2_1_stderr_>, format=0x7fb667797bf1 "[%s] %s\n", ap=ap@entry=0x7fb60dffa408) at vfprintf.c:1293
#6  0x00007fb67b9bd309 in ___fprintf_chk (fp=0x7fb67bc6b540 <_IO_2_1_stderr_>, flag=1, format=<optimized out>) at fprintf_chk.c:35
#7  0x00007fb66777f9af in  () at /usr/lib/x86_64-linux-gnu/libevent-2.0.so.5
#8  0x00007fb66777fba4 in event_warn () at /usr/lib/x86_64-linux-gnu/libevent-2.0.so.5
#9  0x00007fb667784258 in  () at /usr/lib/x86_64-linux-gnu/libevent-2.0.so.5
#10 0x00007fb66776f38a in event_base_loop () at /usr/lib/x86_64-linux-gnu/libevent-2.0.so.5
#11 0x00007fb66fe1d31e in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#12 0x00007fb66fe58c32 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#13 0x00007fb66fe428f5 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#14 0x00007fb66fe715aa in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#15 0x00007fb66fe6d947 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#16 0x00007fb6783d96fa in start_thread (arg=0x7fb60dffb700) at pthread_create.c:333
#17 0x00007fb67b9adb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 16 (Thread 0x7fb60e7fc700 (LWP 5411)):
#0  0x00007fb67b99d9cd in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fb64f53ad51 in pa_read () at /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-8.0.so
#2  0x00007fb64fbc662e in pa_mainloop_prepare () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#3  0x00007fb64fbc70a0 in pa_mainloop_iterate () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#4  0x00007fb64fbc7160 in pa_mainloop_run () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#5  0x00007fb64fbd5149 in  () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#6  0x00007fb64f568678 in  () at /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-8.0.so
#7  0x00007fb6783d96fa in start_thread (arg=0x7fb60e7fc700) at pthread_create.c:333
#8  0x00007fb67b9adb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 15 (Thread 0x7fb60effd700 (LWP 5410)):
[KCrash Handler]
#6  0x00007fb64dacf06c in  () at /usr/lib/x86_64-linux-gnu/libdrm_nouveau.so.2
#7  0x00007fb64dacf709 in  () at /usr/lib/x86_64-linux-gnu/libdrm_nouveau.so.2
#8  0x00007fb64e2168e6 in  () at /usr/lib/x86_64-linux-gnu/dri/nouveau_dri.so
#9  0x00007fb64de59069 in  () at /usr/lib/x86_64-linux-gnu/dri/nouveau_dri.so
#10 0x00007fb66f9f5fed in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#11 0x00007fb66f9f5b5b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#12 0x00007fb67054d4f0 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#13 0x00007fb6704e9841 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#14 0x00007fb6705190d2 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#15 0x00007fb6705657ba in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#16 0x00007fb67052bb3a in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#17 0x00007fb66f7f18fe in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#18 0x00007fb66f7f5241 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#19 0x00007fb66f7f058e in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#20 0x00007fb66fe99a59 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#21 0x00007fb66fe43648 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#22 0x00007fb66fe442b9 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#23 0x00007fb66fe44792 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#24 0x00007fb66fe467c9 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#25 0x00007fb66fe58c32 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#26 0x00007fb66fe428f5 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#27 0x00007fb66fe715aa in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#28 0x00007fb66fe6d947 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#29 0x00007fb6783d96fa in start_thread (arg=0x7fb60effd700) at pthread_create.c:333
#30 0x00007fb67b9adb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 14 (Thread 0x7fb60f7fe700 (LWP 5409)):
#0  0x00007fb6783df3a0 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fb66fa26b70 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#2  0x00007fb66fa0f4e9 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#3  0x00007fb66fa0f56b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007fb66fa0ae3a in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007fb670ca10fe in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007fb670ca3534 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007fb670ca3585 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007fb670ca3669 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007fb66fe58c32 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007fb66fe428f5 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#11 0x00007fb66fe715aa in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#12 0x00007fb66fe6d947 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#13 0x00007fb6783d96fa in start_thread (arg=0x7fb60f7fe700) at pthread_create.c:333
#14 0x00007fb67b9adb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 13 (Thread 0x7fb60ffff700 (LWP 5408)):
#0  0x00007fb6783df749 in pthread_cond_timedwait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00007fb66fe64d92 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#2  0x00007fb66fe6562d in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#3  0x00007fb66fe46858 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007fb66fe58c32 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007fb66fe428f5 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007fb66fe715aa in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007fb66fe6d947 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007fb6783d96fa in start_thread (arg=0x7fb60ffff700) at pthread_create.c:333
#9  0x00007fb67b9adb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 12 (Thread 0x7fb628ff9700 (LWP 5407)):
#0  0x00007fb6783df3a0 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fb66f504cfd in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#2  0x00007fb66fe70e5e in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#3  0x00007fb66fe70f80 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007fb66fe6d947 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007fb6783d96fa in start_thread (arg=0x7fb628ff9700) at pthread_create.c:333
#6  0x00007fb67b9adb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 11 (Thread 0x7fb6297fa700 (LWP 5406)):
#0  0x00007fb6783df3a0 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fb66fe6559d in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#2  0x00007fb66fe65675 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#3  0x00007fb66fe4680d in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007fb66fe58c32 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007fb66fe428f5 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007fb66fe715aa in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007fb66fe6d947 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007fb6783d96fa in start_thread (arg=0x7fb6297fa700) at pthread_create.c:333
#9  0x00007fb67b9adb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 10 (Thread 0x7fb629ffb700 (LWP 5405)):
#0  0x00007fb67b9bb7dc in __lll_lock_wait_private () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:95
#1  0x00007fb67b9bd2b4 in ___fprintf_chk (fp=0x7fb67bc6c770 <_IO_stdfile_2_lock>, flag=1, format=0x7fb667797bf1 "[%s] %s\n") at fprintf_chk.c:30
#2  0x00007fb66777f9af in  () at /usr/lib/x86_64-linux-gnu/libevent-2.0.so.5
#3  0x00007fb66777fba4 in event_warn () at /usr/lib/x86_64-linux-gnu/libevent-2.0.so.5
#4  0x00007fb667784258 in  () at /usr/lib/x86_64-linux-gnu/libevent-2.0.so.5
#5  0x00007fb66776f38a in event_base_loop () at /usr/lib/x86_64-linux-gnu/libevent-2.0.so.5
#6  0x00007fb66fe1d472 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007fb66fe58c32 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007fb66fe428f5 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007fb66f11cdb8 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007fb66f11cefb in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#11 0x00007fb66fe71628 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#12 0x00007fb66fe6d947 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#13 0x00007fb6783d96fa in start_thread (arg=0x7fb629ffb700) at pthread_create.c:333
#14 0x00007fb67b9adb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 9 (Thread 0x7fb62a7fc700 (LWP 5404)):
#0  0x00007fb67b9bb7dc in __lll_lock_wait_private () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:95
#1  0x00007fb67b9bd2b4 in ___fprintf_chk (fp=0x7fb67bc6c770 <_IO_stdfile_2_lock>, flag=1, format=0x7fb667797bf1 "[%s] %s\n") at fprintf_chk.c:30
#2  0x00007fb66777f9af in  () at /usr/lib/x86_64-linux-gnu/libevent-2.0.so.5
#3  0x00007fb66777fba4 in event_warn () at /usr/lib/x86_64-linux-gnu/libevent-2.0.so.5
#4  0x00007fb667784258 in  () at /usr/lib/x86_64-linux-gnu/libevent-2.0.so.5
#5  0x00007fb66776f38a in event_base_loop () at /usr/lib/x86_64-linux-gnu/libevent-2.0.so.5
#6  0x00007fb66fe1d472 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007fb66fe58c32 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007fb66fe428f5 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007fb66f11cd08 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007fb66f11cf5b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#11 0x00007fb66fe71628 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#12 0x00007fb66fe6d947 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#13 0x00007fb6783d96fa in start_thread (arg=0x7fb62a7fc700) at pthread_create.c:333
#14 0x00007fb67b9adb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 8 (Thread 0x7fb62affd700 (LWP 5403)):
#0  0x00007fb6783df3a0 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fb66fe6559d in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#2  0x00007fb66fe65675 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#3  0x00007fb66fe4680d in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007fb66fe58c32 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007fb66fe428f5 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007fb66f11cc58 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007fb66f11cf4b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007fb66fe71628 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007fb66fe6d947 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007fb6783d96fa in start_thread (arg=0x7fb62affd700) at pthread_create.c:333
#11 0x00007fb67b9adb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7fb62b7fe700 (LWP 5402)):
#0  0x00007fb6783df3a0 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fb66fe6559d in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#2  0x00007fb66fe65675 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#3  0x00007fb66fe4680d in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007fb66fe58c32 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007fb66fe428f5 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007fb66f11cba8 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007fb66f11cf3b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007fb66fe71628 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007fb66fe6d947 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007fb6783d96fa in start_thread (arg=0x7fb62b7fe700) at pthread_create.c:333
#11 0x00007fb67b9adb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7fb62bfff700 (LWP 5401)):
#0  0x00007fb67b9bb7dc in __lll_lock_wait_private () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:95
#1  0x00007fb67b9bd2b4 in ___fprintf_chk (fp=0x7fb67bc6c770 <_IO_stdfile_2_lock>, flag=1, format=0x7fb667797bf1 "[%s] %s\n") at fprintf_chk.c:30
#2  0x00007fb66777f9af in  () at /usr/lib/x86_64-linux-gnu/libevent-2.0.so.5
#3  0x00007fb66777fba4 in event_warn () at /usr/lib/x86_64-linux-gnu/libevent-2.0.so.5
#4  0x00007fb667784258 in  () at /usr/lib/x86_64-linux-gnu/libevent-2.0.so.5
#5  0x00007fb66776f38a in event_base_loop () at /usr/lib/x86_64-linux-gnu/libevent-2.0.so.5
#6  0x00007fb66fe1d3b9 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007fb66fe58c32 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007fb66fe428f5 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007fb66f11caf8 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007fb66f11cf2b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#11 0x00007fb66fe71628 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#12 0x00007fb66fe6d947 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#13 0x00007fb6783d96fa in start_thread (arg=0x7fb62bfff700) at pthread_create.c:333
#14 0x00007fb67b9adb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7fb640ff9700 (LWP 5400)):
#0  0x00007fb6783df3a0 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fb66fe6559d in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#2  0x00007fb66fe65675 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#3  0x00007fb66fe4680d in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007fb66fe58c32 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007fb66fe428f5 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007fb66f11ca48 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007fb66f11cf1b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007fb66fe71628 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007fb66fe6d947 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007fb6783d96fa in start_thread (arg=0x7fb640ff9700) at pthread_create.c:333
#11 0x00007fb67b9adb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7fb6427fc700 (LWP 5397)):
#0  0x00007fb6783df3a0 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fb66fe6559d in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#2  0x00007fb66fe65675 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#3  0x00007fb66fe4680d in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007fb66fe58c32 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007fb66fe428f5 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007fb66fe715aa in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007fb66fe6d947 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007fb6783d96fa in start_thread (arg=0x7fb6427fc700) at pthread_create.c:333
#9  0x00007fb67b9adb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7fb642ffd700 (LWP 5396)):
#0  0x00007fb67b9bb7dc in __lll_lock_wait_private () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:95
#1  0x00007fb67b9bd2b4 in ___fprintf_chk (fp=0x7fb67bc6c770 <_IO_stdfile_2_lock>, flag=1, format=0x7fb667797bf1 "[%s] %s\n") at fprintf_chk.c:30
#2  0x00007fb66777f9af in  () at /usr/lib/x86_64-linux-gnu/libevent-2.0.so.5
#3  0x00007fb66777fba4 in event_warn () at /usr/lib/x86_64-linux-gnu/libevent-2.0.so.5
#4  0x00007fb667784258 in  () at /usr/lib/x86_64-linux-gnu/libevent-2.0.so.5
#5  0x00007fb66776f38a in event_base_loop () at /usr/lib/x86_64-linux-gnu/libevent-2.0.so.5
#6  0x00007fb66fe1d3b9 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007fb66fe58c32 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007fb66fe428f5 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007fb66fe715aa in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007fb66fe6d947 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#11 0x00007fb6783d96fa in start_thread (arg=0x7fb642ffd700) at pthread_create.c:333
#12 0x00007fb67b9adb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7fb649b0f700 (LWP 5389)):
#0  0x00007fb67b99d9cd in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fb6764b2740 in g_wakeup_acknowledge (__nbytes=16, __buf=0x7fb649b0e9c0, __fd=<optimized out>) at /usr/include/x86_64-linux-gnu/bits/unistd.h:44
#2  0x00007fb6764b2740 in g_wakeup_acknowledge (wakeup=0x24d65b0) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gwakeup.c:210
#3  0x00007fb67646ee84 in g_main_context_check (context=context@entry=0x7fb644000990, max_priority=2147483647, fds=fds@entry=0x7fb644018fe0, n_fds=n_fds@entry=1) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3632
#4  0x00007fb67646f340 in g_main_context_iterate (context=context@entry=0x7fb644000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3837
#5  0x00007fb67646f4ac in g_main_context_iteration (context=0x7fb644000990, may_block=1) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3901
#6  0x00007fb67c4e223b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fb67c48ccea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fb67c2b1fb4 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007fb67e9487a5 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#10 0x00007fb67c2b6b98 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007fb6783d96fa in start_thread (arg=0x7fb649b0f700) at pthread_create.c:333
#12 0x00007fb67b9adb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7fb6583209c0 (LWP 5387)):
#0  0x00007fb6783df3a0 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fb67c2b7a4b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007fb66e5c6659 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#3  0x00007fb66e5c704e in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007fb6734e3bf7 in QSGRenderer::preprocess() () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007fb6734e335f in QSGRenderer::renderScene(QSGBindable const&) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007fb6734e3a77 in QSGRenderer::renderScene(unsigned int) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007fb67e920e79 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineWidgets.so.5
#8  0x00007fb67cddff3d in  () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#9  0x00007fb67cdc1398 in QWidget::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#10 0x00007fb67e921139 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineWidgets.so.5
#11 0x00007fb67cd7a89c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#12 0x00007fb67cd82296 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#13 0x00007fb67c48ecf8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#14 0x00007fb67cdba22a in QWidgetPrivate::sendPaintEvent(QRegion const&) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#15 0x00007fb67cd8a091 in  () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#16 0x00007fb67cd8aabd in  () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#17 0x00007fb67cda977f in QWidgetPrivate::syncBackingStore() () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#18 0x00007fb67cdc1468 in QWidget::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#19 0x00007fb67cebe4cb in QMainWindow::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#20 0x00007fb67dcd21e7 in KMainWindow::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libKF5XmlGui.so.5
#21 0x00007fb67dd16825 in KXmlGuiWindow::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libKF5XmlGui.so.5
#22 0x00007fb67cd7a89c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#23 0x00007fb67cd82296 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#24 0x00007fb67c48ecf8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#25 0x00007fb67c4913bb in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#26 0x00007fb67c4e1e13 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#27 0x00007fb67646f1a7 in g_main_context_dispatch (context=0x7fb6500016f0) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3154
#28 0x00007fb67646f1a7 in g_main_context_dispatch (context=context@entry=0x7fb6500016f0) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3769
#29 0x00007fb67646f400 in g_main_context_iterate (context=context@entry=0x7fb6500016f0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3840
#30 0x00007fb67646f4ac in g_main_context_iteration (context=0x7fb6500016f0, may_block=1) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3901
#31 0x00007fb67c4e221f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#32 0x00007fb67c48ccea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#33 0x00007fb67c4952fc in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#34 0x000000000040439f in  ()
#35 0x00007fb67b8c7830 in __libc_start_main (main=0x403430, argc=1, argv=0x7ffe1fd40e78, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffe1fd40e68) at ../csu/libc-start.c:291
#36 0x00000000004048a9 in _start ()

Reported using DrKonqi
Comment 1 Christoph Feck 2016-11-02 15:58:01 UTC 

*** This bug has been marked as a duplicate of bug 368371 ***