Bug 366107

Summary:	Crash when clicking on track compositing menu
Product:	[Applications] kdenlive	Reporter:	farid <snd.noise>
Component:	User Interface & Miscellaneous	Assignee:	Jean-Baptiste Mardelle <jb>
Status:	RESOLVED FIXED
Severity:	crash
Priority:	NOR
Version First Reported In:	unspecified
Target Milestone:	---
Platform:	Compiled Sources
OS:	Linux
Latest Commit:	http://commits.kde.org/kdenlive/9a9346e21eed58d6d58ee9e10ecb3e88f0c39bc3	Version Fixed In:
Sentry Crash Report:

Description farid 2016-07-25 20:12:18 UTC

When trying to switch between none, preview and high quality from the dropdown i get a crash.

I am using today's build.

Reproducible: Always

Steps to Reproduce:
1. open kdenlive
2. click on the compositing dropdown menu and try to switch a preview mode
3. crash



Thread 1 "kdenlive" received signal SIGSEGV, Segmentation fault.
0x00007ffff6fa330c in mlt_service_connect_producer () from /usr/lib/libmlt.so.6
(gdb) thread apply all bt

Thread 19 (Thread 0x7fff78edf700 (LWP 9847)):
#0  0x00007fffefe66791 in ppoll () from /usr/lib/libc.so.6
#1  0x00007fffe7c1a99d in pa_mainloop_poll () from /usr/lib/libpulse.so.0
#2  0x00007fffe7c1af8e in pa_mainloop_iterate () from /usr/lib/libpulse.so.0
#3  0x00007fffb7af7eed in ?? () from /usr/lib/libSDL-1.2.so.0
#4  0x00007fffb7acb800 in ?? () from /usr/lib/libSDL-1.2.so.0
#5  0x00007fffb7ad3fe8 in ?? () from /usr/lib/libSDL-1.2.so.0
#6  0x00007fffb7b158a9 in ?? () from /usr/lib/libSDL-1.2.so.0
#7  0x00007fffee328484 in start_thread () from /usr/lib/libpthread.so.0
#8  0x00007fffefe6f6dd in clone () from /usr/lib/libc.so.6

Thread 18 (Thread 0x7fff796e0700 (LWP 9846)):
#0  0x00007fffee32e0af in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
#1  0x00007ffff6faa243 in ?? () from /usr/lib/libmlt.so.6
#2  0x000000000073fe9d in ?? ()
#3  0x00007ffff0860d78 in ?? () from /usr/lib/libQt5Core.so.5
#4  0x00007fffee328484 in start_thread () from /usr/lib/libpthread.so.0
#5  0x00007fffefe6f6dd in clone () from /usr/lib/libc.so.6

Thread 17 (Thread 0x7fff79ee1700 (LWP 9845)):
#0  0x00007fffee32e0af in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
#1  0x00007fffac28ef9f in ?? () from /usr/lib/mlt/libmltsdl.so
#2  0x00007fffee328484 in start_thread () from /usr/lib/libpthread.so.0
#3  0x00007fffefe6f6dd in clone () from /usr/lib/libc.so.6

Thread 15 (Thread 0x7fff7b7fd700 (LWP 9843)):
#0  0x00007fffefe666cd in poll () from /usr/lib/libc.so.6
#1  0x00007fffe8097fd6 in ?? () from /usr/lib/libglib-2.0.so.0
#2  0x00007fffe80980ec in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#3  0x00007ffff0a8f59b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#4  0x00007ffff0a390da in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#5  0x00007ffff085c0f3 in QThread::exec() () from /usr/lib/libQt5Core.so.5
#6  0x00007ffff0860d78 in ?? () from /usr/lib/libQt5Core.so.5
#7  0x00007fffee328484 in start_thread () from /usr/lib/libpthread.so.0
#8  0x00007fffefe6f6dd in clone () from /usr/lib/libc.so.6

Thread 14 (Thread 0x7fff7bffe700 (LWP 9842)):
---Type <return> to continue, or q <return> to quit---
#0  0x00007fffee32e0af in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
#1  0x00007ffff0861c2b in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/libQt5Core.so.5
#2  0x00007ffff623a435 in ?? () from /usr/lib/libQt5Quick.so.5
#3  0x00007ffff623ad2a in ?? () from /usr/lib/libQt5Quick.so.5
#4  0x00007ffff0860d78 in ?? () from /usr/lib/libQt5Core.so.5
#5  0x00007fffee328484 in start_thread () from /usr/lib/libpthread.so.0
#6  0x00007fffefe6f6dd in clone () from /usr/lib/libc.so.6

Thread 13 (Thread 0x7fff94d03700 (LWP 9841)):
#0  0x00007fffefe666cd in poll () from /usr/lib/libc.so.6
#1  0x00007fffe8097fd6 in ?? () from /usr/lib/libglib-2.0.so.0
#2  0x00007fffe80980ec in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#3  0x00007ffff0a8f57f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#4  0x00007ffff0a390da in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#5  0x00007ffff085c0f3 in QThread::exec() () from /usr/lib/libQt5Core.so.5
#6  0x00007ffff0860d78 in ?? () from /usr/lib/libQt5Core.so.5
#7  0x00007fffee328484 in start_thread () from /usr/lib/libpthread.so.0
#8  0x00007fffefe6f6dd in clone () from /usr/lib/libc.so.6

Thread 12 (Thread 0x7fff95704700 (LWP 9840)):
#0  0x00007fffee32e0af in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
#1  0x00007ffff0861c2b in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/libQt5Core.so.5
#2  0x00007ffff623a435 in ?? () from /usr/lib/libQt5Quick.so.5
#3  0x00007ffff623ad2a in ?? () from /usr/lib/libQt5Quick.so.5
#4  0x00007ffff0860d78 in ?? () from /usr/lib/libQt5Core.so.5
#5  0x00007fffee328484 in start_thread () from /usr/lib/libpthread.so.0
#6  0x00007fffefe6f6dd in clone () from /usr/lib/libc.so.6

Thread 11 (Thread 0x7fff96ffe700 (LWP 9839)):
#0  0x00007fffefe666cd in poll () from /usr/lib/libc.so.6
#1  0x00007fffe7c29121 in ?? () from /usr/lib/libpulse.so.0
#2  0x00007fffe7c1a8f1 in pa_mainloop_poll () from /usr/lib/libpulse.so.0
#3  0x00007fffe7c1af8e in pa_mainloop_iterate () from /usr/lib/libpulse.so.0
#4  0x00007fffe7c1b040 in pa_mainloop_run () from /usr/lib/libpulse.so.0
#5  0x00007fffe7c29069 in ?? () from /usr/lib/libpulse.so.0
#6  0x00007fffe140ded8 in ?? () from /usr/lib/pulseaudio/libpulsecommon-9.0.so
#7  0x00007fffee328484 in start_thread () from /usr/lib/libpthread.so.0
#8  0x00007fffefe6f6dd in clone () from /usr/lib/libc.so.6
---Type <return> to continue, or q <return> to quit---

Thread 9 (Thread 0x7fff97fff700 (LWP 9837)):
#0  0x00007fffefe666cd in poll () from /usr/lib/libc.so.6
#1  0x00007fffe8097fd6 in ?? () from /usr/lib/libglib-2.0.so.0
#2  0x00007fffe80980ec in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#3  0x00007ffff0a8f57f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#4  0x00007ffff0a390da in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#5  0x00007ffff085c0f3 in QThread::exec() () from /usr/lib/libQt5Core.so.5
#6  0x00007ffff2456445 in ?? () from /usr/lib/libQt5Qml.so.5
#7  0x00007ffff0860d78 in ?? () from /usr/lib/libQt5Core.so.5
#8  0x00007fffee328484 in start_thread () from /usr/lib/libpthread.so.0
#9  0x00007fffefe6f6dd in clone () from /usr/lib/libc.so.6

Thread 8 (Thread 0x7fff9ca8f700 (LWP 9836)):
#0  0x00007fffee32e458 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
#1  0x00007ffff0861b66 in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/libQt5Core.so.5
#2  0x00007ffff085d274 in ?? () from /usr/lib/libQt5Core.so.5
#3  0x00007ffff0860d78 in ?? () from /usr/lib/libQt5Core.so.5
#4  0x00007fffee328484 in start_thread () from /usr/lib/libpthread.so.0
#5  0x00007fffefe6f6dd in clone () from /usr/lib/libc.so.6

Thread 7 (Thread 0x7fff9da90700 (LWP 9835)):
#0  0x00007fffefe666cd in poll () from /usr/lib/libc.so.6
#1  0x00007fffe8097fd6 in ?? () from /usr/lib/libglib-2.0.so.0
#2  0x00007fffe80980ec in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#3  0x00007ffff0a8f57f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#4  0x00007ffff0a390da in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#5  0x00007ffff085c0f3 in QThread::exec() () from /usr/lib/libQt5Core.so.5
#6  0x00007ffff2456445 in ?? () from /usr/lib/libQt5Qml.so.5
#7  0x00007ffff0860d78 in ?? () from /usr/lib/libQt5Core.so.5
#8  0x00007fffee328484 in start_thread () from /usr/lib/libpthread.so.0
#9  0x00007fffefe6f6dd in clone () from /usr/lib/libc.so.6

Thread 6 (Thread 0x7fffa1532700 (LWP 9834)):
#0  0x00007fffefe666cd in poll () from /usr/lib/libc.so.6
#1  0x00007fffa1fb9cbc in ?? () from /usr/lib/libusb-1.0.so.0
#2  0x00007fffee328484 in start_thread () from /usr/lib/libpthread.so.0
#3  0x00007fffefe6f6dd in clone () from /usr/lib/libc.so.6
---Type <return> to continue, or q <return> to quit---

Thread 5 (Thread 0x7fffcbfff700 (LWP 9833)):
#0  0x00007fffefe666cd in poll () from /usr/lib/libc.so.6
#1  0x00007fffe8097fd6 in ?? () from /usr/lib/libglib-2.0.so.0
#2  0x00007fffe80980ec in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#3  0x00007ffff0a8f59b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#4  0x00007ffff0a390da in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#5  0x00007ffff085c0f3 in QThread::exec() () from /usr/lib/libQt5Core.so.5
#6  0x00007ffff2ee9e75 in ?? () from /usr/lib/libQt5DBus.so.5
#7  0x00007ffff0860d78 in ?? () from /usr/lib/libQt5Core.so.5
#8  0x00007fffee328484 in start_thread () from /usr/lib/libpthread.so.0
#9  0x00007fffefe6f6dd in clone () from /usr/lib/libc.so.6

Thread 4 (Thread 0x7fffd25f7700 (LWP 9832)):
#0  0x00007fffefe666cd in poll () from /usr/lib/libc.so.6
#1  0x00007fffe8097fd6 in ?? () from /usr/lib/libglib-2.0.so.0
#2  0x00007fffe8098362 in g_main_loop_run () from /usr/lib/libglib-2.0.so.0
#3  0x00007fffd5205726 in ?? () from /usr/lib/libgio-2.0.so.0
#4  0x00007fffe80be2b5 in ?? () from /usr/lib/libglib-2.0.so.0
#5  0x00007fffee328484 in start_thread () from /usr/lib/libpthread.so.0
#6  0x00007fffefe6f6dd in clone () from /usr/lib/libc.so.6

Thread 3 (Thread 0x7fffd2df8700 (LWP 9831)):
#0  0x00007fffefe666cd in poll () from /usr/lib/libc.so.6
#1  0x00007fffe8097fd6 in ?? () from /usr/lib/libglib-2.0.so.0
#2  0x00007fffe80980ec in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#3  0x00007fffe8098131 in ?? () from /usr/lib/libglib-2.0.so.0
#4  0x00007fffe80be2b5 in ?? () from /usr/lib/libglib-2.0.so.0
#5  0x00007fffee328484 in start_thread () from /usr/lib/libpthread.so.0
#6  0x00007fffefe6f6dd in clone () from /usr/lib/libc.so.6

Thread 2 (Thread 0x7fffdc916700 (LWP 9830)):
#0  0x00007fffefe666cd in poll () from /usr/lib/libc.so.6
#1  0x00007fffe77d38e0 in ?? () from /usr/lib/libxcb.so.1
#2  0x00007fffe77d5679 in xcb_wait_for_event () from /usr/lib/libxcb.so.1
#3  0x00007fffdee8a469 in ?? () from /usr/lib/libQt5XcbQpa.so.5
#4  0x00007ffff0860d78 in ?? () from /usr/lib/libQt5Core.so.5
#5  0x00007fffee328484 in start_thread () from /usr/lib/libpthread.so.0
---Type <return> to continue, or q <return> to quit---
#6  0x00007fffefe6f6dd in clone () from /usr/lib/libc.so.6

Thread 1 (Thread 0x7ffff7ed5800 (LWP 9826)):
#0  0x00007ffff6fa330c in mlt_service_connect_producer () from /usr/lib/libmlt.so.6
#1  0x00007ffff6fac4a9 in mlt_transition_connect () from /usr/lib/libmlt.so.6
#2  0x00007ffff6facd07 in mlt_field_plant_transition () from /usr/lib/libmlt.so.6
#3  0x00000000005d8918 in ?? ()
#4  0x00000000005b858c in ?? ()
#5  0x0000000000842574 in ?? ()
#6  0x0000000000892496 in ?? ()
#7  0x00007ffff0a664e9 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/libQt5Core.so.5
#8  0x00007ffff366e331 in KSelectAction::triggered(int) () from /usr/lib/libKF5WidgetsAddons.so.5
#9  0x00007ffff366f073 in KSelectAction::actionTriggered(QAction*) () from /usr/lib/libKF5WidgetsAddons.so.5
#10 0x00007ffff0a6685e in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/libQt5Core.so.5
#11 0x00007ffff1a80f6f in QActionGroup::triggered(QAction*) () from /usr/lib/libQt5Widgets.so.5
#12 0x00007ffff1a81ae9 in ?? () from /usr/lib/libQt5Widgets.so.5
#13 0x00007ffff0a664e9 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/libQt5Core.so.5
#14 0x00007ffff1a7d472 in QAction::triggered(bool) () from /usr/lib/libQt5Widgets.so.5
#15 0x00007ffff1a7fe60 in QAction::activate(QAction::ActionEvent) () from /usr/lib/libQt5Widgets.so.5
#16 0x00007ffff3671b95 in ?? () from /usr/lib/libKF5WidgetsAddons.so.5
#17 0x00007ffff3672317 in ?? () from /usr/lib/libKF5WidgetsAddons.so.5
#18 0x00007ffff0a664e9 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/libQt5Core.so.5
#19 0x00007ffff1b80b01 in QComboBox::currentIndexChanged(int) () from /usr/lib/libQt5Widgets.so.5
#20 0x00007ffff1b82f51 in ?? () from /usr/lib/libQt5Widgets.so.5
#21 0x00007ffff1b8568d in ?? () from /usr/lib/libQt5Widgets.so.5
#22 0x00007ffff1b85776 in ?? () from /usr/lib/libQt5Widgets.so.5
#23 0x00007ffff1b8a7cd in ?? () from /usr/lib/libQt5Widgets.so.5
#24 0x00007ffff0a664e9 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/libQt5Core.so.5
#25 0x00007ffff1b811a8 in ?? () from /usr/lib/libQt5Widgets.so.5
#26 0x00007ffff0a3a9e1 in QCoreApplicationPrivate::sendThroughObjectEventFilters(QObject*, QEvent*) () from /usr/lib/libQt5Core.so.5
#27 0x00007ffff1a83e15 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQt5Widgets.so.5
#28 0x00007ffff1a8c46d in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQt5Widgets.so.5
#29 0x00007ffff0a3ac80 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib/libQt5Core.so.5
#30 0x00007ffff1a8ab1d in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool) ()
   from /usr/lib/libQt5Widgets.so.5
#31 0x00007ffff1ae55a0 in ?? () from /usr/lib/libQt5Widgets.so.5
#32 0x00007ffff1ae7763 in ?? () from /usr/lib/libQt5Widgets.so.5
#33 0x00007ffff1a83e3c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQt5Widgets.so.5
---Type <return> to continue, or q <return> to quit---
#34 0x00007ffff1a8b5b1 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQt5Widgets.so.5
#35 0x00007ffff0a3ac80 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib/libQt5Core.so.5
#36 0x00007ffff0f890e3 in QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*) () from /usr/lib/libQt5Gui.so.5
#37 0x00007ffff0f8ac65 in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) ()
   from /usr/lib/libQt5Gui.so.5
#38 0x00007ffff0f68cbb in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Gui.so.5
#39 0x00007fffdeec0310 in ?? () from /usr/lib/libQt5XcbQpa.so.5
#40 0x00007fffe8097dd7 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#41 0x00007fffe8098040 in ?? () from /usr/lib/libglib-2.0.so.0
#42 0x00007fffe80980ec in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#43 0x00007ffff0a8f57f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#44 0x00007ffff0a390da in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#45 0x00007ffff0a415cc in QCoreApplication::exec() () from /usr/lib/libQt5Core.so.5
#46 0x000000000048aa52 in ?? ()
#47 0x00007fffefda8741 in __libc_start_main () from /usr/lib/libc.so.6
#48 0x000000000048b309 in _start ()
(gdb)

Comment 1 Jean-Baptiste Mardelle 2016-07-26 22:10:07 UTC

Are you compiling from source or using one of our PPA ? There seems to be a problem between MLT and Kdenlive.

Comment 2 farid 2016-07-26 22:12:31 UTC

Compiling from source using AUR in Archlinux. I am using MLT 6.2.

Comment 3 farid 2016-07-27 02:28:02 UTC

OK I just compiled MLT from git and it didn't crash. Is there going to be an MLT release before 16.08?

Comment 4 Jean-Baptiste Mardelle 2016-07-27 08:58:49 UTC

Ok, thanks for the info, I now understand the issue, will fix MLT 6.2.0 compatibility. A new MLT release will probably happen in 1-2 months, not before Kdenlive 16.08

Comment 5 Jean-Baptiste Mardelle 2016-07-27 21:03:52 UTC

Git commit 9a9346e21eed58d6d58ee9e10ecb3e88f0c39bc3 by Jean-Baptiste Mardelle.
Committed on 27/07/2016 at 20:56.
Pushed by mardelle into branch 'Applications/16.08'.

Fix crashes when using MLT 6.2.0
Bug: 365955

M  +3    -1    src/bin/projectclip.cpp
M  +16   -0    src/doc/kdenlivedoc.cpp
M  +2    -0    src/doc/kdenlivedoc.h
M  +7    -2    src/effectslist/initeffects.cpp
M  +1    -1    src/effectslist/initeffects.h
M  +33   -9    src/mainwindow.cpp
M  +1    -1    src/mainwindow.h
M  +0    -1    src/timeline/timeline.cpp
M  +4    -1    src/timeline/transitionhandler.cpp

http://commits.kde.org/kdenlive/9a9346e21eed58d6d58ee9e10ecb3e88f0c39bc3