Bug 386319

Application: plasma-discover (5.10.5)

Qt Version: 5.9.1
Frameworks Version: 5.38.0
Operating System: Linux 4.13.0-16-generic x86_64
Distribution: Ubuntu 17.10

-- Information about the crash:
- What I was doing when the application crashed:
Nothing, only chrome (with just my gmail page) and discover were open.

-- Backtrace:
Application: Discover (plasma-discover), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f72dc0685c0 (LWP 4196))]

Thread 10 (Thread 0x7f7296ffd700 (LWP 4214)):
#0  0x00007f72d7794901 in __GI___poll (fds=0x7f7288002de0, nfds=1, timeout=89005) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f72d214a169 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f72d214a27c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f72d80d449b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f72d8079e3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f72d7e993ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f72d7e9e29d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f72d40097fc in start_thread (arg=0x7f7296ffd700) at pthread_create.c:465
#8  0x00007f72d77a0b0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7f72977fe700 (LWP 4209)):
#0  0x00007f72d7794901 in __GI___poll (fds=0x55ee3a8307a0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f72d214a169 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f72d214a502 in g_main_loop_run () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f729de23b26 in  () at /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#4  0x00007f72d2171645 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f72d40097fc in start_thread (arg=0x7f72977fe700) at pthread_create.c:465
#6  0x00007f72d77a0b0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7f7297fff700 (LWP 4208)):
#0  0x00007f72d2149ff0 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f72d214a27c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f72d214a2c1 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f72d2171645 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f72d40097fc in start_thread (arg=0x7f7297fff700) at pthread_create.c:465
#5  0x00007f72d77a0b0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7f729ffff700 (LWP 4206)):
#0  0x00007f72d7794901 in __GI___poll (fds=0x7f72980874b0, nfds=1, timeout=89005) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f72d214a169 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f72d214a27c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f72d80d449b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f72d8079e3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f72d7e993ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f72d7e9e29d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f72d40097fc in start_thread (arg=0x7f729ffff700) at pthread_create.c:465
#8  0x00007f72d77a0b0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7f72a5736700 (LWP 4205)):
#0  0x00007f72d7794901 in __GI___poll (fds=0x7f72a0002de0, nfds=1, timeout=9005) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f72d214a169 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f72d214a27c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f72d80d449b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f72d8079e3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f72d7e993ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f72d7e9e29d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f72d40097fc in start_thread (arg=0x7f72a5736700) at pthread_create.c:465
#8  0x00007f72d77a0b0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f72aec9b700 (LWP 4204)):
#0  0x00007f72d7794901 in __GI___poll (fds=0x7f72a8004f00, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f72d214a169 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f72d214a27c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f72d80d449b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f72d8079e3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f72d7e993ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f72db323846 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007f72d7e9e29d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f72d40097fc in start_thread (arg=0x7f72aec9b700) at pthread_create.c:465
#9  0x00007f72d77a0b0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f72be9e6700 (LWP 4200)):
#0  0x00007f72d2149a76 in g_main_context_check () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f72d214a110 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f72d214a27c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f72d80d449b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f72d8079e3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f72d7e993ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f72d8aa4f45 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f72d7e9e29d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f72d40097fc in start_thread (arg=0x7f72be9e6700) at pthread_create.c:465
#9  0x00007f72d77a0b0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f72c008c700 (LWP 4199)):
#0  0x00007f72d77af1c2 in __libc_disable_asynccancel () at ../sysdeps/unix/sysv/linux/x86_64/cancellation.S:96
#1  0x00007f72d7790012 in __GI___libc_read (fd=7, buf=0x7f72c008ba60, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:26
#2  0x00007f72d218e280 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f72d2149c4b in g_main_context_check () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f72d214a110 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f72d214a27c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f72d80d449b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f72d8079e3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f72d7e993ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f72da228e45 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#10 0x00007f72d7e9e29d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007f72d40097fc in start_thread (arg=0x7f72c008c700) at pthread_create.c:465
#12 0x00007f72d77a0b0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f72c89ba700 (LWP 4198)):
#0  0x00007f72d7794901 in __GI___poll (fds=0x7f72c89b9bb8, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f72d1ee3747 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f72d1ee553a in xcb_wait_for_event () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f72caf14f09 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007f72d7e9e29d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f72d40097fc in start_thread (arg=0x7f72c89ba700) at pthread_create.c:465
#6  0x00007f72d77a0b0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f72dc0685c0 (LWP 4196)):
[KCrash Handler]
#6  0x00007f72d80ac927 in QObjectPrivate::addConnection(int, QObjectPrivate::Connection*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f72d80aeba4 in QObjectPrivate::connectImpl(QObject const*, int, QObject const*, void**, QtPrivate::QSlotObjectBase*, Qt::ConnectionType, int const*, QMetaObject const*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f72d80aeeb2 in QObject::connectImpl(QObject const*, void**, QObject const*, void**, QtPrivate::QSlotObjectBase*, Qt::ConnectionType, int const*, QMetaObject const*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f72a5ddf336 in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/discover/kns-backend.so
#10 0x00007f72d80ab452 in QObject::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007f72d967a46c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#12 0x00007f72d9681d34 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#13 0x00007f72d807bde8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#14 0x00007f72d807e55d in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#15 0x00007f72d80d4e53 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#16 0x00007f72d2149fb7 in g_main_context_dispatch () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#17 0x00007f72d214a1f0 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#18 0x00007f72d214a27c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#19 0x00007f72d80d447f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x00007f72d8079e3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#21 0x00007f72d8082da4 in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#22 0x000055ee386aefa8 in  ()
#23 0x00007f72d76ad1c1 in __libc_start_main (main=0x55ee386ae6d0, argc=1, argv=0x7ffc04d48928, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffc04d48918) at ../csu/libc-start.c:308
#24 0x000055ee386af22a in _start ()

Possible duplicates by query: bug 385679, bug 384871, bug 383246, bug 382509.

Reported using DrKonqi