374531 – Plasma crashes after Mopidy start

Bug 374531 - Plasma crashes after Mopidy start

Summary: Plasma crashes after Mopidy start

Status:	RESOLVED FIXED

Alias:	None

Product:	plasmashell
Classification:	Plasma
Component:	general (show other bugs)
Version:	5.8.5
Platform:	Arch Linux Linux

Importance:	NOR crash
Target Milestone:	1.0
Assignee:	David Edmundson

URL:
Keywords:	drkonqi

Duplicates (1):	352008 (view as bug list)
Depends on:
Blocks:

Reported:	2017-01-04 11:56 UTC by Dmitry Novikov
Modified:	2017-02-06 15:24 UTC (History)
CC List:	4 users (show)

See Also:
Latest Commit:	https://commits.kde.org/plasma-workspace/03374b185f9bd3bc4f70726ae641014a33278fdd
Version Fixed In:	5.8.6
Sentry Crash Report:

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Description Dmitry Novikov 2017-01-04 11:56:48 UTC

Application: plasmashell (5.8.5)

Qt Version: 5.7.1
Frameworks Version: 5.29.0
Operating System: Linux 4.8.15-2-ck x86_64
Distribution: "Arch Linux"

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

Started Mopidy music server from console.
Mopidy has following extensions installed:
* mopidy 2.0.1-1
* mopidy-alsamixer 1.0.3-3
* mopidy-dirble 1.3.0-1
* mopidy-gmusic 2.0.0-1
* mopidy-moped 0.6.4-1
* mopidy-mpris 1.3.1-1
* mopidy-podcast 2.0.0-1
* mopidy-scrobbler 1.1.1-1
* mopidy-soundcloud 2.0.2-1
* mopidy-youtube v2.0.2-1

I suppose that mopidy-mpris is the one that crashes Plasma.

The crash can be reproduced every time.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f2705eaa800 (LWP 12406))]

Thread 16 (Thread 0x7f26267fc700 (LWP 4605)):
#0  0x00007f26fed9c10f in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f26ffc87bab in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#2  0x00007f264754c1c0 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007f2647550988 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007f264754b263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007f26475509e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007f264754b263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007f26475509e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007f264754b263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#9  0x00007f26475509e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#10 0x00007f264754b263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#11 0x00007f264754e1f9 in ThreadWeaver::Thread::run() () at /usr/lib/libKF5ThreadWeaver.so.5
#12 0x00007f26ffc86cf8 in  () at /usr/lib/libQt5Core.so.5
#13 0x00007f26fed96454 in start_thread () at /usr/lib/libpthread.so.0
#14 0x00007f26ff59c7df in clone () at /usr/lib/libc.so.6

Thread 15 (Thread 0x7f2626ffd700 (LWP 4604)):
#0  0x00007f26fed9c10f in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f26ffc87bab in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#2  0x00007f264754c1c0 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007f2647550988 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007f264754b263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007f26475509e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007f264754b263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007f26475509e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007f264754b263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#9  0x00007f264754e1f9 in ThreadWeaver::Thread::run() () at /usr/lib/libKF5ThreadWeaver.so.5
#10 0x00007f26ffc86cf8 in  () at /usr/lib/libQt5Core.so.5
#11 0x00007f26fed96454 in start_thread () at /usr/lib/libpthread.so.0
#12 0x00007f26ff59c7df in clone () at /usr/lib/libc.so.6

Thread 14 (Thread 0x7f26277fe700 (LWP 4603)):
#0  0x00007f26fed9c10f in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f26ffc87bab in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#2  0x00007f264754c1c0 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007f2647550988 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007f264754b263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007f26475509e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007f264754b263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007f26475509e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007f264754b263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#9  0x00007f264754e1f9 in ThreadWeaver::Thread::run() () at /usr/lib/libKF5ThreadWeaver.so.5
#10 0x00007f26ffc86cf8 in  () at /usr/lib/libQt5Core.so.5
#11 0x00007f26fed96454 in start_thread () at /usr/lib/libpthread.so.0
#12 0x00007f26ff59c7df in clone () at /usr/lib/libc.so.6

Thread 13 (Thread 0x7f2627fff700 (LWP 4602)):
#0  0x00007f26fed9c10f in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f26ffc87bab in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#2  0x00007f264754c1c0 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007f2647550988 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007f264754b263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007f26475509e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007f264754b263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007f264754e1f9 in ThreadWeaver::Thread::run() () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007f26ffc86cf8 in  () at /usr/lib/libQt5Core.so.5
#9  0x00007f26fed96454 in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007f26ff59c7df in clone () at /usr/lib/libc.so.6

Thread 12 (Thread 0x7f2634a8f700 (LWP 4601)):
#0  0x00007f26fed9c10f in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f26ffc87bab in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#2  0x00007f264754c1c0 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007f2647550988 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007f264754b263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007f26475509e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007f264754b263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007f26475509e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007f264754b263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#9  0x00007f264754e1f9 in ThreadWeaver::Thread::run() () at /usr/lib/libKF5ThreadWeaver.so.5
#10 0x00007f26ffc86cf8 in  () at /usr/lib/libQt5Core.so.5
#11 0x00007f26fed96454 in start_thread () at /usr/lib/libpthread.so.0
#12 0x00007f26ff59c7df in clone () at /usr/lib/libc.so.6

Thread 11 (Thread 0x7f2635290700 (LWP 4600)):
#0  0x00007f26fed9c10f in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f26ffc87bab in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#2  0x00007f264754c1c0 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007f2647550988 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007f264754b263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007f26475509e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007f264754b263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007f26475509e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007f264754b263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#9  0x00007f264754e1f9 in ThreadWeaver::Thread::run() () at /usr/lib/libKF5ThreadWeaver.so.5
#10 0x00007f26ffc86cf8 in  () at /usr/lib/libQt5Core.so.5
#11 0x00007f26fed96454 in start_thread () at /usr/lib/libpthread.so.0
#12 0x00007f26ff59c7df in clone () at /usr/lib/libc.so.6

Thread 10 (Thread 0x7f2635a91700 (LWP 4599)):
#0  0x00007f26fed9c10f in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f26ffc87bab in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#2  0x00007f264754c1c0 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007f2647550988 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007f264754b263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007f26475509e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007f264754b263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007f264754e1f9 in ThreadWeaver::Thread::run() () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007f26ffc86cf8 in  () at /usr/lib/libQt5Core.so.5
#9  0x00007f26fed96454 in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007f26ff59c7df in clone () at /usr/lib/libc.so.6

Thread 9 (Thread 0x7f2636292700 (LWP 4598)):
#0  0x00007f26fed9c10f in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f26ffc87bab in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#2  0x00007f264754c1c0 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007f2647550988 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007f264754b263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007f26475509e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007f264754b263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007f26475509e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007f264754b263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#9  0x00007f26475509e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#10 0x00007f264754b263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#11 0x00007f264754e1f9 in ThreadWeaver::Thread::run() () at /usr/lib/libKF5ThreadWeaver.so.5
#12 0x00007f26ffc86cf8 in  () at /usr/lib/libQt5Core.so.5
#13 0x00007f26fed96454 in start_thread () at /usr/lib/libpthread.so.0
#14 0x00007f26ff59c7df in clone () at /usr/lib/libc.so.6

Thread 8 (Thread 0x7f26381fa700 (LWP 12415)):
#0  0x00007f26fa8507a7 in g_main_context_release () at /usr/lib/libglib-2.0.so.0
#1  0x00007f26fa85173a in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f26fa85189c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007f26ffeb62db in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f26ffe5fd3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f26ffc82063 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007f2702fe4e75 in  () at /usr/lib/libQt5Qml.so.5
#7  0x00007f26ffc86cf8 in  () at /usr/lib/libQt5Core.so.5
#8  0x00007f26fed96454 in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007f26ff59c7df in clone () at /usr/lib/libc.so.6

Thread 7 (Thread 0x7f2651309700 (LWP 12412)):
#0  0x00007f26fa896dd4 in g_mutex_unlock () at /usr/lib/libglib-2.0.so.0
#1  0x00007f26fa850c7c in g_main_context_prepare () at /usr/lib/libglib-2.0.so.0
#2  0x00007f26fa8516ab in  () at /usr/lib/libglib-2.0.so.0
#3  0x00007f26fa85189c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#4  0x00007f26ffeb62db in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f26ffe5fd3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007f26ffc82063 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#7  0x00007f2703b834b6 in  () at /usr/lib/libQt5Quick.so.5
#8  0x00007f26ffc86cf8 in  () at /usr/lib/libQt5Core.so.5
#9  0x00007f26fed96454 in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007f26ff59c7df in clone () at /usr/lib/libc.so.6

Thread 6 (Thread 0x7f26dbbdf700 (LWP 12411)):
#0  0x00007f26fed9c10f in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f270562f1f4 in  () at /usr/lib/libQt5Script.so.5
#2  0x00007f270562f239 in  () at /usr/lib/libQt5Script.so.5
#3  0x00007f26fed96454 in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f26ff59c7df in clone () at /usr/lib/libc.so.6

Thread 5 (Thread 0x7f26e595d700 (LWP 12410)):
#0  0x00007f26fa896db9 in g_mutex_lock () at /usr/lib/libglib-2.0.so.0
#1  0x00007f26fa851742 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f26fa85189c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007f26ffeb62db in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f26ffe5fd3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f26ffc82063 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007f2702fe4e75 in  () at /usr/lib/libQt5Qml.so.5
#7  0x00007f26ffc86cf8 in  () at /usr/lib/libQt5Core.so.5
#8  0x00007f26fed96454 in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007f26ff59c7df in clone () at /usr/lib/libc.so.6

Thread 4 (Thread 0x7f26e7bf2700 (LWP 12409)):
#0  0x00007f26ffc7de79 in QMutex::lock() () at /usr/lib/libQt5Core.so.5
#1  0x00007f26ffeb5a4f in  () at /usr/lib/libQt5Core.so.5
#2  0x00007f26fa850c89 in g_main_context_prepare () at /usr/lib/libglib-2.0.so.0
#3  0x00007f26fa8516ab in  () at /usr/lib/libglib-2.0.so.0
#4  0x00007f26fa85189c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#5  0x00007f26ffeb62db in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007f26ffe5fd3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#7  0x00007f26ffc82063 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#8  0x00007f2702fe4e75 in  () at /usr/lib/libQt5Qml.so.5
#9  0x00007f26ffc86cf8 in  () at /usr/lib/libQt5Core.so.5
#10 0x00007f26fed96454 in start_thread () at /usr/lib/libpthread.so.0
#11 0x00007f26ff59c7df in clone () at /usr/lib/libc.so.6

Thread 3 (Thread 0x7f26ed6d9700 (LWP 12408)):
#0  0x00007fffc29fe920 in  ()
#1  0x00007fffc29febb5 in clock_gettime ()
#2  0x00007f26ff5a96b6 in clock_gettime () at /usr/lib/libc.so.6
#3  0x00007f26ffd2c211 in  () at /usr/lib/libQt5Core.so.5
#4  0x00007f26ffeb3f59 in QTimerInfoList::updateCurrentTime() () at /usr/lib/libQt5Core.so.5
#5  0x00007f26ffeb4505 in QTimerInfoList::timerWait(timespec&) () at /usr/lib/libQt5Core.so.5
#6  0x00007f26ffeb58ae in  () at /usr/lib/libQt5Core.so.5
#7  0x00007f26fa850c89 in g_main_context_prepare () at /usr/lib/libglib-2.0.so.0
#8  0x00007f26fa8516ab in  () at /usr/lib/libglib-2.0.so.0
#9  0x00007f26fa85189c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#10 0x00007f26ffeb62db in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#11 0x00007f26ffe5fd3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#12 0x00007f26ffc82063 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#13 0x00007f27009fdde5 in  () at /usr/lib/libQt5DBus.so.5
#14 0x00007f26ffc86cf8 in  () at /usr/lib/libQt5Core.so.5
#15 0x00007f26fed96454 in start_thread () at /usr/lib/libpthread.so.0
#16 0x00007f26ff59c7df in clone () at /usr/lib/libc.so.6

Thread 2 (Thread 0x7f26ef30b700 (LWP 12407)):
#0  0x00007f26ff59348d in poll () at /usr/lib/libc.so.6
#1  0x00007f27045558e0 in  () at /usr/lib/libxcb.so.1
#2  0x00007f2704557679 in xcb_wait_for_event () at /usr/lib/libxcb.so.1
#3  0x00007f26f1048789 in  () at /usr/lib/libQt5XcbQpa.so.5
#4  0x00007f26ffc86cf8 in  () at /usr/lib/libQt5Core.so.5
#5  0x00007f26fed96454 in start_thread () at /usr/lib/libpthread.so.0
#6  0x00007f26ff59c7df in clone () at /usr/lib/libc.so.6

Thread 1 (Thread 0x7f2705eaa800 (LWP 12406)):
[KCrash Handler]
#6  0x0000000004593050 in  ()
#7  0x00007f26fbee6445 in _dbus_type_reader_recurse () at /usr/lib/libdbus-1.so.3
#8  0x00007f2700a49132 in QDBusArgument::operator>>(QDBusVariant&) const () at /usr/lib/libQt5DBus.so.5
#9  0x00007f2700a49277 in operator>>(QDBusArgument const&, QVariant&) () at /usr/lib/libQt5DBus.so.5
#10 0x00007f2645868d85 in  () at /usr/lib/qt/plugins/plasma/dataengine/plasma_engine_mpris2.so
#11 0x00007f26458652c0 in  () at /usr/lib/qt/plugins/plasma/dataengine/plasma_engine_mpris2.so
#12 0x00007f2645866fe9 in  () at /usr/lib/qt/plugins/plasma/dataengine/plasma_engine_mpris2.so
#13 0x00007f2645867d7d in  () at /usr/lib/qt/plugins/plasma/dataengine/plasma_engine_mpris2.so
#14 0x00007f26ffe8d43e in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/libQt5Core.so.5
#15 0x00007f2700a5533f in QDBusPendingCallWatcher::finished(QDBusPendingCallWatcher*) () at /usr/lib/libQt5DBus.so.5
#16 0x00007f2700a55438 in  () at /usr/lib/libQt5DBus.so.5
#17 0x00007f26ffe8df29 in QObject::event(QEvent*) () at /usr/lib/libQt5Core.so.5
#18 0x00007f2700dc635c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#19 0x00007f2700dcdad1 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#20 0x00007f26ffe618e0 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#21 0x00007f26ffe6406d in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/libQt5Core.so.5
#22 0x00007f26ffeb5eb3 in  () at /usr/lib/libQt5Core.so.5
#23 0x00007f26fa851587 in g_main_context_dispatch () at /usr/lib/libglib-2.0.so.0
#24 0x00007f26fa8517f0 in  () at /usr/lib/libglib-2.0.so.0
#25 0x00007f26fa85189c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#26 0x00007f26ffeb62bf in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#27 0x00007f26ffe5fd3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#28 0x00007f26ffe6823c in QCoreApplication::exec() () at /usr/lib/libQt5Core.so.5
#29 0x000000000041c9d2 in  ()
#30 0x00007f26ff4d4291 in __libc_start_main () at /usr/lib/libc.so.6
#31 0x000000000041cd5a in _start ()

Reported using DrKonqi

Comment 1 Kai Uwe Broulik 2017-01-04 12:17:57 UTC

Confirmed, starting mopidy with mopidy-mpris installed crashes plasmashell and has it refuse to restart until you quit mopidy. Crashes in mpris data engine:
Thread 1 "plasmashell" received signal SIGSEGV, Segmentation fault.
0x00000000036484f0 in ?? ()
(gdb) bt
#0  0x00000000036484f0 in ?? ()
#1  0x00007fffeee36305 in _dbus_type_reader_recurse () from /lib/x86_64-linux-gnu/libdbus-1.so.3
#2  0x00007ffff7f8b472 in QDBusArgument::operator>>(QDBusVariant&) const ()
   from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#3  0x00007ffff7f8b5b7 in operator>>(QDBusArgument const&, QVariant&) ()
   from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#4  0x00007fff33003e6b in QDBusArgument const& operator>><QString, QVariant>(QDBusArgument const&, QMap<QString, QVariant>&) () from /usr/lib/x86_64-linux-gnu/qt5/plugins/plasma/dataengine/plasma_engine_mpris2.so
#5  0x00007fff32ffff64 in PlayerContainer::copyProperty(QString const&, QVariant const&, QVariant::Type, PlayerContainer::UpdateType) () from /usr/lib/x86_64-linux-gnu/qt5/plugins/plasma/dataengine/plasma_engine_mpris2.so
#6  0x00007fff3300130b in PlayerContainer::updateFromMap(QMap<QString, QVariant> const&, PlayerContainer::UpdateType) () from /usr/lib/x86_64-linux-gnu/qt5/plugins/plasma/dataengine/plasma_engine_mpris2.so
#7  0x00007fff33001ac9 in PlayerContainer::getPropsFinished(QDBusPendingCallWatcher*) ()
   from /usr/lib/x86_64-linux-gnu/qt5/plugins/plasma/dataengine/plasma_engine_mpris2.so
#8  0x00007fff330061e3 in QtPrivate::FunctorCall<QtPrivate::IndexesList<0>, QtPrivate::List<QDBusPendingCallWatcher*>, void, void (PlayerContainer::*)(QDBusPendingCallWatcher*)>::call(void (PlayerContainer::*)(QDBusPendingCallWatcher*), PlayerContainer*, void**) ()
   from /usr/lib/x86_64-linux-gnu/qt5/plugins/plasma/dataengine/plasma_engine_mpris2.so
#9  0x00007fff33005e33 in void QtPrivate::FunctionPointer<void (PlayerContainer::*)(QDBusPendingCallWatcher*)>::call<QtPrivate::List<QDBusPendingCallWatcher*>, void>(void (PlayerContainer::*)(QDBusPendingCallWatcher*), PlayerContainer*, void**) () from /usr/lib/x86_64-linux-gnu/qt5/plugins/plasma/dataengine/plasma_engine_mpris2.so
#10 0x00007fff33005681 in QtPrivate::QSlotObject<void (PlayerContainer::*)(QDBusPendingCallWatcher*), QtPrivate::List<QDBusPendingCallWatcher*>, void>::impl(int, QtPrivate::QSlotObjectBase*, QObject*, void**, bool*) ()
   from /usr/lib/x86_64-linux-gnu/qt5/plugins/plasma/dataengine/plasma_engine_mpris2.so
#11 0x00007ffff2e03e76 in QMetaObject::activate(QObject*, int, int, void**) ()
   from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007ffff7f9778f in QDBusPendingCallWatcher::finished(QDBusPendingCallWatcher*) ()
   from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#13 0x00007ffff7f97888 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#14 0x00007ffff2e04a19 in QObject::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#15 0x00007ffff36c489c in QApplicationPrivate::notify_helper(QObject*, QEvent*) ()
   from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#16 0x00007ffff36cc296 in QApplication::notify(QObject*, QEvent*) ()
   from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#17 0x00007ffff2dd8cf8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) ()
   from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#18 0x00007ffff2ddb3bb in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) ()
   from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x00007ffff2e2be13 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x00007fffee0fb1a7 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#21 0x00007fffee0fb400 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#22 0x00007fffee0fb4ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#23 0x00007ffff2e2c21f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
   from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#24 0x00007ffff2dd6cea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) ()
   from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5

Comment 2 Kai Uwe Broulik 2017-01-04 12:37:02 UTC

Patch https://phabricator.kde.org/D3954

Comment 3 Kai Uwe Broulik 2017-01-04 13:17:44 UTC

Git commit 03374b185f9bd3bc4f70726ae641014a33278fdd by Kai Uwe Broulik.
Committed on 04/01/2017 at 13:17.
Pushed by broulik into branch 'Plasma/5.8'.

[MPRIS Data Engine] Don't crash if "Metadata" is a map but of wrong type

QDBusArgument MapType fits all kinds of maps but when we try to stream a map of type
other than a{sv} (which the MRPIS spec requires) into a QVariantMap we would crash.
Explicitly check signature to avoid this.
FIXED-IN: 5.8.6

M  +3    -1    dataengines/mpris2/playercontainer.cpp

https://commits.kde.org/plasma-workspace/03374b185f9bd3bc4f70726ae641014a33278fdd

Comment 4 Kai Uwe Broulik 2017-02-06 15:24:16 UTC

*** Bug 352008 has been marked as a duplicate of this bug. ***