Bug 386668

Summary: Discover crashes after opening in AbstractBackendUpdater::progressingChanged() when I click on "updates available" notification
Product: [Applications] Discover Reporter: Gunasekar Rajaratnam <crguna>
Component: discoverAssignee: Aleix Pol <aleixpol>
Status: RESOLVED DUPLICATE    
Severity: crash CC: nate
Priority: NOR Keywords: drkonqi
Version First Reported In: 5.11.2   
Target Milestone: ---   
Platform: Ubuntu   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description Gunasekar Rajaratnam 2017-11-09 05:33:32 UTC 
Application: plasma-discover (5.11.2)

Qt Version: 5.9.1
Frameworks Version: 5.39.0
Operating System: Linux 4.13.0-16-generic i686
Distribution: Ubuntu 17.10

-- Information about the crash:
- What I was doing when the application crashed:
Discover crashes after opening when I click on "updates available" notification

-- Backtrace:
Application: Discover (plasma-discover), signal: Segmentation fault
Using host libthread_db library "/lib/i386-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0xb28b2ac0 (LWP 7697))]

Thread 12 (Thread 0xa163fb40 (LWP 7714)):
#0  0xb7f08cf9 in __kernel_vsyscall ()
#1  0xb59ce1ab in __GI___libc_read (fd=22, buf=0xa163efec, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:26
#2  0xb47b3d65 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb476d916 in g_main_context_check () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0xb476de11 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0xb476dfc4 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#6  0xb601fd04 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#7  0xb5fbb0fd in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#8  0xb5dd07e1 in QThread::exec() () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#9  0xb5dd0938 in QThread::run() () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#10 0xb5dd5d2c in ?? () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#11 0xb4e8537c in start_thread (arg=0xa163fb40) at pthread_create.c:465
#12 0xb59e00a6 in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:108

Thread 11 (Thread 0xa35d4b40 (LWP 7712)):
#0  0xb47b4c30 in g_private_get () from /lib/i386-linux-gnu/libglib-2.0.so.0
#1  0xb47962dc in g_thread_self () from /lib/i386-linux-gnu/libglib-2.0.so.0
#2  0xb476dfb4 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb601fd04 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#4  0xb5fbb0fd in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#5  0xb5dd07e1 in QThread::exec() () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#6  0xb5dd0938 in QThread::run() () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#7  0xb5dd5d2c in ?? () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#8  0xb4e8537c in start_thread (arg=0xa35d4b40) at pthread_create.c:465
#9  0xb59e00a6 in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:108

Thread 10 (Thread 0xa4103b40 (LWP 7711)):
#0  0xb7f08cf9 in __kernel_vsyscall ()
#1  0xb59ce1ab in __GI___libc_read (fd=16, buf=0xa4102fec, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:26
#2  0xb47b3d65 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb476d916 in g_main_context_check () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0xb476de11 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0xb476dfc4 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#6  0xb601fd04 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#7  0xb5fbb0fd in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#8  0xb5dd07e1 in QThread::exec() () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#9  0xb5dd0938 in QThread::run() () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#10 0xb5dd5d2c in ?? () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#11 0xb4e8537c in start_thread (arg=0xa4103b40) at pthread_create.c:465
#12 0xb59e00a6 in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:108

Thread 9 (Thread 0xa71c4b40 (LWP 7705)):
#0  0xb7f08cf9 in __kernel_vsyscall ()
#1  0xb59d5abb in __GI___poll (fds=0xdd8d40, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#2  0xb477cfd0 in g_poll () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb476de7a in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0xb476dfc4 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0xb601fd04 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#6  0xb5fbb0fd in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#7  0xb5dd07e1 in QThread::exec() () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#8  0xb7aa11b9 in ?? () from /usr/lib/i386-linux-gnu/libQt5Quick.so.5
#9  0xb5dd5d2c in ?? () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#10 0xb4e8537c in start_thread (arg=0xa71c4b40) at pthread_create.c:465
#11 0xb59e00a6 in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:108

Thread 8 (Thread 0xa8448b40 (LWP 7704)):
#0  0xb7f08cf9 in __kernel_vsyscall ()
#1  0xb4e8b9c0 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0xb7faf8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#2  __pthread_cond_wait_common (abstime=0x0, mutex=0xb7fab4, cond=0xb7facc) at pthread_cond_wait.c:502
#3  __pthread_cond_wait (cond=0xb7facc, mutex=0xb7fab4) at pthread_cond_wait.c:655
#4  0xadef4d1a in ?? () from /usr/lib/i386-linux-gnu/dri/swrast_dri.so
#5  0xb4e8537c in start_thread (arg=0xa8448b40) at pthread_create.c:465
#6  0xb59e00a6 in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:108

Thread 7 (Thread 0xa8c49b40 (LWP 7703)):
#0  0xb7f08cf9 in __kernel_vsyscall ()
#1  0xb4e8b9c0 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0xb7f9fc) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#2  __pthread_cond_wait_common (abstime=0x0, mutex=0xb7f9b8, cond=0xb7f9d0) at pthread_cond_wait.c:502
#3  __pthread_cond_wait (cond=0xb7f9d0, mutex=0xb7f9b8) at pthread_cond_wait.c:655
#4  0xadef4d1a in ?? () from /usr/lib/i386-linux-gnu/dri/swrast_dri.so
#5  0xb4e8537c in start_thread (arg=0xa8c49b40) at pthread_create.c:465
#6  0xb59e00a6 in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:108

Thread 6 (Thread 0xa944ab40 (LWP 7702)):
#0  0xb7f08cf9 in __kernel_vsyscall ()
#1  0xb4e8b9c0 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0xb7f900) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#2  __pthread_cond_wait_common (abstime=0x0, mutex=0xb7f8bc, cond=0xb7f8d4) at pthread_cond_wait.c:502
#3  __pthread_cond_wait (cond=0xb7f8d4, mutex=0xb7f8bc) at pthread_cond_wait.c:655
#4  0xadef4d1a in ?? () from /usr/lib/i386-linux-gnu/dri/swrast_dri.so
#5  0xb4e8537c in start_thread (arg=0xa944ab40) at pthread_create.c:465
#6  0xb59e00a6 in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:108

Thread 5 (Thread 0xa9c4bb40 (LWP 7701)):
#0  0xb7f08cf9 in __kernel_vsyscall ()
#1  0xb4e8b9c0 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0xb7f804) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#2  __pthread_cond_wait_common (abstime=0x0, mutex=0xb7f7c0, cond=0xb7f7d8) at pthread_cond_wait.c:502
#3  __pthread_cond_wait (cond=0xb7f7d8, mutex=0xb7f7c0) at pthread_cond_wait.c:655
#4  0xadef4d1a in ?? () from /usr/lib/i386-linux-gnu/dri/swrast_dri.so
#5  0xb4e8537c in start_thread (arg=0xa9c4bb40) at pthread_create.c:465
#6  0xb59e00a6 in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:108

Thread 4 (Thread 0xafdf4b40 (LWP 7700)):
#0  0xb601f976 in ?? () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#1  0xb476d7f2 in g_main_context_check () from /lib/i386-linux-gnu/libglib-2.0.so.0
#2  0xb476de11 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb476dfc4 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0xb601fd04 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#5  0xb5fbb0fd in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#6  0xb5dd07e1 in QThread::exec() () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#7  0xb661a77f in ?? () from /usr/lib/i386-linux-gnu/libQt5Qml.so.5
#8  0xb5dd5d2c in ?? () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#9  0xb4e8537c in start_thread (arg=0xafdf4b40) at pthread_create.c:465
#10 0xb59e00a6 in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:108

Thread 3 (Thread 0xb11b6b40 (LWP 7699)):
#0  0xb7f08cf9 in __kernel_vsyscall ()
#1  0xb59d5abb in __GI___poll (fds=0xb0811100, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#2  0xb477cfd0 in g_poll () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb476de7a in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0xb476dfc4 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0xb601fd04 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#6  0xb5fbb0fd in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#7  0xb5dd07e1 in QThread::exec() () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#8  0xb755aefc in ?? () from /usr/lib/i386-linux-gnu/libQt5DBus.so.5
#9  0xb5dd5d2c in ?? () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#10 0xb4e8537c in start_thread (arg=0xb11b6b40) at pthread_create.c:465
#11 0xb59e00a6 in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:108

Thread 2 (Thread 0xb243cb40 (LWP 7698)):
#0  0xb7f08cf9 in __kernel_vsyscall ()
#1  0xb59d5abb in __GI___poll (fds=0xb243c10c, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#2  0xb4703bad in ?? () from /usr/lib/i386-linux-gnu/libxcb.so.1
#3  0xb4705f93 in xcb_wait_for_event () from /usr/lib/i386-linux-gnu/libxcb.so.1
#4  0xb2585043 in ?? () from /usr/lib/i386-linux-gnu/libQt5XcbQpa.so.5
#5  0xb5dd5d2c in ?? () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#6  0xb4e8537c in start_thread (arg=0xb243cb40) at pthread_create.c:465
#7  0xb59e00a6 in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:108

Thread 1 (Thread 0xb28b2ac0 (LWP 7697)):
[KCrash Handler]
#7  0x00f3b930 in ?? ()
#8  0xb5ff250d in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#9  0xb7996169 in AbstractBackendUpdater::progressingChanged(bool) () from /usr/lib/i386-linux-gnu/plasma-discover/libDiscoverCommon.so
#10 0xb7982590 in StandardBackendUpdater::refreshUpdateable() () from /usr/lib/i386-linux-gnu/plasma-discover/libDiscoverCommon.so
#11 0xb5ff1fa4 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#12 0xb5ff250d in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#13 0xb7996602 in AbstractResourcesBackend::fetchingChanged() () from /usr/lib/i386-linux-gnu/plasma-discover/libDiscoverCommon.so
#14 0xa5a61b88 in KNSBackend::setFetching(bool) () from /usr/lib/i386-linux-gnu/qt5/plugins/discover/kns-backend.so
#15 0xa5a63dc6 in KNSBackend::receivedEntries(QList<KNSCore::EntryInternal> const&) () from /usr/lib/i386-linux-gnu/qt5/plugins/discover/kns-backend.so
#16 0xb5fee9f0 in QMetaCallEvent::placeMetaCall(QObject*) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#17 0xb5ff29e3 in QObject::event(QEvent*) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#18 0xb6e5bfba in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/i386-linux-gnu/libQt5Widgets.so.5
#19 0xb6e64037 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/i386-linux-gnu/libQt5Widgets.so.5
#20 0xb5fbd4ad in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#21 0xb5fbfe74 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#22 0xb5fc03b7 in QCoreApplication::sendPostedEvents(QObject*, int) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#23 0xb60207a3 in ?? () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#24 0xb476dca0 in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
#25 0xb476df19 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#26 0xb476dfc4 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#27 0xb601fce3 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#28 0xb25ee001 in ?? () from /usr/lib/i386-linux-gnu/libQt5XcbQpa.so.5
#29 0xb5fbb0fd in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#30 0xb5fc4bed in QCoreApplication::exec() () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#31 0xb6887ea1 in QGuiApplication::exec() () from /usr/lib/i386-linux-gnu/sse2/libQt5Gui.so.5
#32 0xb6e5bf14 in QApplication::exec() () from /usr/lib/i386-linux-gnu/libQt5Widgets.so.5
#33 0x00470daf in ?? ()
#34 0xb5901986 in __libc_start_main (main=0x470520, argc=3, argv=0xbfa6afa4, init=0x48c350 <__libc_csu_init>, fini=0x48c3b0 <__libc_csu_fini>, rtld_fini=0xb7f19e50 <_dl_fini>, stack_end=0xbfa6af9c) at ../csu/libc-start.c:308
#35 0x00470fb7 in _start ()

Reported using DrKonqi
Comment 1 Aleix Pol 2017-12-11 15:35:54 UTC 

*** This bug has been marked as a duplicate of bug 386045 ***