Bug 413909

Summary: Plasmashell crashes when I try to print something
Product: [Plasma] plasmashell Reporter: Florian Schulte <mail>
Component: generalAssignee: David Edmundson <kde>
Status: RESOLVED DUPLICATE    
Severity: crash CC: kde, plasma-bugs
Priority: NOR Keywords: drkonqi
Version: 5.17.2   
Target Milestone: 1.0   
Platform: unspecified   
OS: Linux   
Latest Commit: Version Fixed In:
Sentry Crash Report:

Description Florian Schulte 2019-11-07 10:04:16 UTC 
Application: plasmashell (5.17.2)

Qt Version: 5.13.1
Frameworks Version: 5.63.0
Operating System: Linux 4.15.0-66-generic x86_64
Distribution: KDE neon User Edition 5.17

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

I printed some PDF using google chrome (but also happens from other applications), then the task bars disappeared.

If I restart plasmashell manually (I use yakuake which survives and can still be opened using a hotkey), but it crashes immediately again as long as the printer is printing. When it has finished, plasmashell can be restarted normally. 


So i guess it could have something to do with the printer applet. I also have a three-monitor setup with a default task bar on each screen. I don't know how it is solved technically, but maybe there are multiple instances of the printing applet running which could cause problems. But that would be just a lucky guess.

The crash can be reproduced every time.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f2c64971800 (LWP 9406))]

Thread 18 (Thread 0x7f2b82ffd700 (LWP 5065)):
#0  0x00007f2c5b7029f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x558ca0e55334) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f2c5b7029f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x558ca0e552e0, cond=0x558ca0e55308) at pthread_cond_wait.c:502
#2  0x00007f2c5b7029f3 in __pthread_cond_wait (cond=0x558ca0e55308, mutex=0x558ca0e552e0) at pthread_cond_wait.c:655
#3  0x00007f2c5e7d1b0b in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f2c5e7d1e19 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f2c627f0ec8 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007f2c627f12fa in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007f2c5e7cab72 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f2c5b6fc6db in start_thread (arg=0x7f2b82ffd700) at pthread_create.c:463
#9  0x00007f2c5e0c788f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 17 (Thread 0x7f2b8bfff700 (LWP 15606)):
#0  0x00007f2c5b7029f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x558ca0801fb0) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f2c5b7029f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x558ca0801f60, cond=0x558ca0801f88) at pthread_cond_wait.c:502
#2  0x00007f2c5b7029f3 in __pthread_cond_wait (cond=0x558ca0801f88, mutex=0x558ca0801f60) at pthread_cond_wait.c:655
#3  0x00007f2c5e7d1b0b in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f2c5e7d1e19 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f2c627f0ec8 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007f2c627f12fa in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007f2c5e7cab72 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f2c5b6fc6db in start_thread (arg=0x7f2b8bfff700) at pthread_create.c:463
#9  0x00007f2c5e0c788f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 16 (Thread 0x7f2b99481700 (LWP 15518)):
#0  0x00007f2c5b7029f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x558ca0442c00) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f2c5b7029f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x558ca0442bb0, cond=0x558ca0442bd8) at pthread_cond_wait.c:502
#2  0x00007f2c5b7029f3 in __pthread_cond_wait (cond=0x558ca0442bd8, mutex=0x558ca0442bb0) at pthread_cond_wait.c:655
#3  0x00007f2c5e7d1b0b in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f2c5e7d1e19 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f2c627f0ec8 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007f2c627f12fa in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007f2c5e7cab72 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f2c5b6fc6db in start_thread (arg=0x7f2b99481700) at pthread_create.c:463
#9  0x00007f2c5e0c788f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 15 (Thread 0x7f2b9b285700 (LWP 15314)):
#0  0x00007f2c5b7029f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x558ca01da5c0) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f2c5b7029f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x558ca01da570, cond=0x558ca01da598) at pthread_cond_wait.c:502
#2  0x00007f2c5b7029f3 in __pthread_cond_wait (cond=0x558ca01da598, mutex=0x558ca01da570) at pthread_cond_wait.c:655
#3  0x00007f2c5e7d1b0b in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f2c5e7d1e19 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f2c627f0ec8 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007f2c627f12fa in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007f2c5e7cab72 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f2c5b6fc6db in start_thread (arg=0x7f2b9b285700) at pthread_create.c:463
#9  0x00007f2c5e0c788f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 14 (Thread 0x7f2ba525e700 (LWP 14310)):
#0  0x00007f2c5e0babf9 in __GI___poll (fds=0x7f2ba00058f0, nfds=1, timeout=3494390) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f2c57ff35c9 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f2c57ff36dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f2c5ea0d9db in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f2c5e9adeaa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f2c5e7c93ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f2ba7bbc197 in KCupsConnection::run() () at /usr/lib/x86_64-linux-gnu/libkcupslib.so
#7  0x00007f2c5e7cab72 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f2c5b6fc6db in start_thread (arg=0x7f2ba525e700) at pthread_create.c:463
#9  0x00007f2c5e0c788f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 13 (Thread 0x7f2bc4c13700 (LWP 12621)):
#0  0x00007f2c5e0babf9 in __GI___poll (fds=0x558c9ea03100, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f2c57ff35c9 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f2c57ff36dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f2c5ea0d9db in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f2c5e9adeaa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f2c5e7c93ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f2c5e7cab72 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f2c5b6fc6db in start_thread (arg=0x7f2bc4c13700) at pthread_create.c:463
#8  0x00007f2c5e0c788f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 12 (Thread 0x7f2bc5414700 (LWP 12620)):
#0  0x00007f2c5e0b60b4 in __GI___libc_read (fd=75, buf=0x7f2bc5413b90, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:27
#1  0x00007f2c580382d0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f2c57ff30b7 in g_main_context_check () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f2c57ff3570 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f2c57ff36dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f2c5ea0d9db in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f2c5e9adeaa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f2c5e7c93ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f2c5e7cab72 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f2c5b6fc6db in start_thread (arg=0x7f2bc5414700) at pthread_create.c:463
#10 0x00007f2c5e0c788f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 11 (Thread 0x7f2bc63ff700 (LWP 12618)):
#0  0x00007f2c5e0babf9 in __GI___poll (fds=0x7f2bbc006b10, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f2c57ff35c9 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f2c57ff36dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f2c5ea0d9db in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f2c5e9adeaa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f2c5e7c93ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f2c6276aac6 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007f2c5e7cab72 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f2c5b6fc6db in start_thread (arg=0x7f2bc63ff700) at pthread_create.c:463
#9  0x00007f2c5e0c788f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7f2bccbfd700 (LWP 12582)):
#0  0x00007f2c5b7029f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x558c9e241d54) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f2c5b7029f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x558c9e241d00, cond=0x558c9e241d28) at pthread_cond_wait.c:502
#2  0x00007f2c5b7029f3 in __pthread_cond_wait (cond=0x558c9e241d28, mutex=0x558c9e241d00) at pthread_cond_wait.c:655
#3  0x00007f2c5e7d1b0b in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f2c5e7d1e19 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f2c627f0ec8 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007f2c627f12fa in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007f2c5e7cab72 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f2c5b6fc6db in start_thread (arg=0x7f2bccbfd700) at pthread_create.c:463
#9  0x00007f2c5e0c788f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7f2be59fb700 (LWP 12501)):
#0  0x00007f2c5b7029f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x558c9e1fd710) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f2c5b7029f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x558c9e1fd6c0, cond=0x558c9e1fd6e8) at pthread_cond_wait.c:502
#2  0x00007f2c5b7029f3 in __pthread_cond_wait (cond=0x558c9e1fd6e8, mutex=0x558c9e1fd6c0) at pthread_cond_wait.c:655
#3  0x00007f2c5e7d1b0b in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f2c5e7d1e19 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f2c627f0ec8 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007f2c627f12fa in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007f2c5e7cab72 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f2c5b6fc6db in start_thread (arg=0x7f2be59fb700) at pthread_create.c:463
#9  0x00007f2c5e0c788f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7f2be61fc700 (LWP 12413)):
#0  0x00007f2c5e0babf9 in __GI___poll (fds=0x7f2bd0004a60, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f2c57ff35c9 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f2c57ff36dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f2c5ea0d9db in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f2c5e9adeaa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f2c5e7c93ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f2c5e7cab72 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f2c5b6fc6db in start_thread (arg=0x7f2be61fc700) at pthread_create.c:463
#8  0x00007f2c5e0c788f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7f2be69fd700 (LWP 12412)):
#0  0x00007f2c5b7029f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f2c283b805c) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f2c5b7029f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x7f2c283b8008, cond=0x7f2c283b8030) at pthread_cond_wait.c:502
#2  0x00007f2c5b7029f3 in __pthread_cond_wait (cond=0x7f2c283b8030, mutex=0x7f2c283b8008) at pthread_cond_wait.c:655
#3  0x00007f2c5e44e86c in std::condition_variable::wait(std::unique_lock<std::mutex>&) () at /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#4  0x00007f2c2dec4f37 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#5  0x00007f2c2e624c1c in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#6  0x00007f2c2e6266bc in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#7  0x00007f2c2dec77f8 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#8  0x00007f2c2deebd0a in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#9  0x00007f2c5b6fc6db in start_thread (arg=0x7f2be69fd700) at pthread_create.c:463
#10 0x00007f2c5e0c788f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7f2be71fe700 (LWP 12411)):
#0  0x00007f2c58039664 in g_mutex_unlock () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f2c57ff3169 in g_main_context_dispatch () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f2c57ff3650 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f2c57ff36dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f2c5ea0d9db in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f2c5e9adeaa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f2c5e7c93ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f2c5e7cab72 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f2c5b6fc6db in start_thread (arg=0x7f2be71fe700) at pthread_create.c:463
#9  0x00007f2c5e0c788f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f2be79ff700 (LWP 12409)):
#0  0x00007f2c58039658 in g_mutex_lock () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f2c57ff2b33 in g_main_context_prepare () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f2c57ff34fb in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f2c57ff36dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f2c5ea0d9db in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f2c5e9adeaa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f2c5e7c93ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f2c5e7cab72 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f2c5b6fc6db in start_thread (arg=0x7f2be79ff700) at pthread_create.c:463
#9  0x00007f2c5e0c788f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f2c28dd8700 (LWP 12387)):
#0  0x00007f2c5b7029f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f2c300aedd4) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f2c5b7029f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x558c9e486a70, cond=0x7f2c300aeda8) at pthread_cond_wait.c:502
#2  0x00007f2c5b7029f3 in __pthread_cond_wait (cond=0x7f2c300aeda8, mutex=0x558c9e486a70) at pthread_cond_wait.c:655
#3  0x00007f2c5e44e86c in std::condition_variable::wait(std::unique_lock<std::mutex>&) () at /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#4  0x00007f2c2f3d2e67 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#5  0x00007f2c2f3d2fa9 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#6  0x00007f2c5e45466f in  () at /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#7  0x00007f2c5b6fc6db in start_thread (arg=0x7f2c28dd8700) at pthread_create.c:463
#8  0x00007f2c5e0c788f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f2c47390700 (LWP 10942)):
#0  0x00007f2c5e0b60b4 in __GI___libc_read (fd=18, buf=0x7f2c4738fb70, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:27
#1  0x00007f2c580382d0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f2c57ff30b7 in g_main_context_check () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f2c57ff3570 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f2c57ff36dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f2c5ea0d9db in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f2c5e9adeaa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f2c5e7c93ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f2c62297cb5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#9  0x00007f2c5e7cab72 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f2c5b6fc6db in start_thread (arg=0x7f2c47390700) at pthread_create.c:463
#11 0x00007f2c5e0c788f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f2c4d429700 (LWP 9421)):
#0  0x00007f2c5e0babf9 in __GI___poll (fds=0x7f2c4000c8a0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f2c57ff35c9 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f2c57ff36dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f2c5ea0d9db in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f2c5e9adeaa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f2c5e7c93ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f2c5fac10e5 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007f2c5e7cab72 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f2c5b6fc6db in start_thread (arg=0x7f2c4d429700) at pthread_create.c:463
#9  0x00007f2c5e0c788f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f2c64971800 (LWP 9406)):
[KCrash Handler]
#6  0x00007f2ba7bdbc80 in JobModel::updateJob(int, KCupsJob const&) () at /usr/lib/x86_64-linux-gnu/libkcupslib.so
#7  0x00007f2ba7bdde68 in JobModel::insertJob(int, KCupsJob const&) () at /usr/lib/x86_64-linux-gnu/libkcupslib.so
#8  0x00007f2ba7bde46b in JobModel::getJobFinished(KCupsRequest*) () at /usr/lib/x86_64-linux-gnu/libkcupslib.so
#9  0x00007f2c5e9e1272 in QObject::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f2c60316eac in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#11 0x00007f2c6031e4b0 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#12 0x00007f2c5e9afd48 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007f2c5e9b2667 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#14 0x00007f2c5ea0e3a3 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#15 0x00007f2c57ff3417 in g_main_context_dispatch () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#16 0x00007f2c57ff3650 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#17 0x00007f2c57ff36dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#18 0x00007f2c5ea0d9bf in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x00007f2c5e9adeaa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x00007f2c5e9b7220 in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#21 0x0000558c9b7d3cef in  ()
#22 0x00007f2c5dfc7b97 in __libc_start_main (main=0x558c9b7d3040, argc=1, argv=0x7ffddb31e678, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffddb31e668) at ../csu/libc-start.c:310
#23 0x0000558c9b7d3faa in _start ()

The reporter indicates this bug may be a duplicate of or related to bug 410847.

Possible duplicates by query: bug 412269, bug 411870, bug 410847, bug 410570, bug 410509.

Reported using DrKonqi
Comment 1 Kai Uwe Broulik 2019-11-07 10:30:42 UTC 

*** This bug has been marked as a duplicate of bug 410570 ***