[kde] [Bug 392497] New: kdenlive crashing in frei0r scurves with double free

Perry Harrington bugzilla_noreply at kde.org
Thu Mar 29 19:06:11 BST 2018 

https://bugs.kde.org/show_bug.cgi?id=392497

            Bug ID: 392497
           Summary: kdenlive crashing in frei0r scurves with double free
           Product: kde
           Version: unspecified
          Platform: unspecified
                OS: Linux
            Status: UNCONFIRMED
          Keywords: drkonqi
          Severity: normal
          Priority: NOR
         Component: general
          Assignee: unassigned-bugs at kde.org
          Reporter: pedward at apsoft.com
  Target Milestone: ---

Application: kdenlive (17.12.2)

Qt Version: 5.9.4
Frameworks Version: 5.44.0
Operating System: Linux 4.15.12-301.fc27.x86_64 x86_64
Distribution: "Fedora release 27 (Twenty Seven)"

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

Last week I created a custom set of S curves and lift/gamm/gain for color
grading cine type footage.  It worked last week, then I rebooted (and added
color calibration with xcalib) and now kdenlive is crashing every time.

I ran rpm -Va to check all files on my system, to ensure none were modified or
missing.  I also made certain that kdenlive was using all of the libraries from
the standard repos (I had previously compiled MLT with GPU support, but stopped
using that).

To reproduce, I just pull in an AVCHD clip, then apply an S curve under 'color
correction'.

The GDB stack trace shows what appears to be a double free, since it crashes in
_int_free().

The crash is happening in thread 25 the curve plugin for frei0r.

The crash can be reproduced every time.

-- Backtrace:
Application: Kdenlive (kdenlive), signal: Aborted
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f356c9e6940 (LWP 18801))]

Thread 29 (Thread 0x7f349f656700 (LWP 18853)):
#0  0x00007f35605d9d66 in ppoll () at /lib64/libc.so.6
#1  0x00007f3555f4b131 in pa_mainloop_poll () at /lib64/libpulse.so.0
#2  0x00007f3555f4b740 in pa_mainloop_iterate () at /lib64/libpulse.so.0
#3  0x00007f34d915abad in PULSE_WaitAudio () at /lib64/libSDL-1.2.so.0
#4  0x00007f34d912e7fc in SDL_RunAudio () at /lib64/libSDL-1.2.so.0
#5  0x00007f34d9136e38 in SDL_RunThread () at /lib64/libSDL-1.2.so.0
#6  0x00007f34d9179579 in RunThread () at /lib64/libSDL-1.2.so.0
#7  0x00007f355eb7150b in start_thread () at /lib64/libpthread.so.0
#8  0x00007f35605e416f in clone () at /lib64/libc.so.6

Thread 28 (Thread 0x7f349fe57700 (LWP 18852)):
#0  0x00007f355eb7ab1d in __lll_lock_wait () at /lib64/libpthread.so.0
#1  0x00007f355eb73ea3 in pthread_mutex_lock () at /lib64/libpthread.so.0
#2  0x00007f356ba47fa0 in mlt_pool_alloc () at /lib64/libmlt.so.6
#3  0x00007f34d86a9b27 in convert_image () at /usr/lib64/mlt/libmltavformat.so
#4  0x00007f356ba2f78e in mlt_frame_get_image () at /lib64/libmlt.so.6
#5  0x00007f356ba459c9 in producer_get_image () at /lib64/libmlt.so.6
#6  0x00007f356ba2f72f in mlt_frame_get_image () at /lib64/libmlt.so.6
#7  0x00007f356ba42295 in consumer_worker_thread () at /lib64/libmlt.so.6
#8  0x00007f355eb7150b in start_thread () at /lib64/libpthread.so.0
#9  0x00007f35605e416f in clone () at /lib64/libc.so.6

Thread 27 (Thread 0x7f34a0658700 (LWP 18851)):
#0  0x00007f355eb7ab1d in __lll_lock_wait () at /lib64/libpthread.so.0
#1  0x00007f355eb73ea3 in pthread_mutex_lock () at /lib64/libpthread.so.0
#2  0x00007f356ba47fa0 in mlt_pool_alloc () at /lib64/libmlt.so.6
#3  0x00007f34d86a9b27 in convert_image () at /usr/lib64/mlt/libmltavformat.so
#4  0x00007f356ba2f78e in mlt_frame_get_image () at /lib64/libmlt.so.6
#5  0x00007f34d88c497e in filter_get_image () at /usr/lib64/mlt/libmltplus.so
#6  0x00007f356ba2f72f in mlt_frame_get_image () at /lib64/libmlt.so.6
#7  0x00007f356ba2f72f in mlt_frame_get_image () at /lib64/libmlt.so.6
#8  0x00007f356ba2f72f in mlt_frame_get_image () at /lib64/libmlt.so.6
#9  0x00007f34d8af7f5e in get_image(mlt_frame_s*, unsigned char**,
mlt_image_format*, int*, int*, int) () at /usr/lib64/mlt/libmltqt.so
#10 0x00007f356ba2f72f in mlt_frame_get_image () at /lib64/libmlt.so.6
#11 0x00007f356ba459c9 in producer_get_image () at /lib64/libmlt.so.6
#12 0x00007f356ba2f72f in mlt_frame_get_image () at /lib64/libmlt.so.6
#13 0x00007f356ba42295 in consumer_worker_thread () at /lib64/libmlt.so.6
#14 0x00007f355eb7150b in start_thread () at /lib64/libpthread.so.0
#15 0x00007f35605e416f in clone () at /lib64/libc.so.6

Thread 26 (Thread 0x7f34a0e59700 (LWP 18850)):
#0  0x00007f35605f11dc in __lll_lock_wait_private () at /lib64/libc.so.6
#1  0x00007f356056d3f8 in arena_get_retry () at /lib64/libc.so.6
#2  0x00007f356057110c in malloc () at /lib64/libc.so.6
#3  0x00007f356ba47fbb in mlt_pool_alloc () at /lib64/libmlt.so.6
#4  0x00007f34d86a9b27 in convert_image () at /usr/lib64/mlt/libmltavformat.so
#5  0x00007f34d95d2074 in filter_get_image () at /usr/lib64/mlt/libmltxine.so
#6  0x00007f356ba2f72f in mlt_frame_get_image () at /lib64/libmlt.so.6
#7  0x00007f34da172bd5 in get_image () at /usr/lib64/mlt/libmltcore.so
#8  0x00007f356ba2f72f in mlt_frame_get_image () at /lib64/libmlt.so.6
#9  0x00007f34da1717c9 in filter_get_image () at /usr/lib64/mlt/libmltcore.so
#10 0x00007f356ba2f72f in mlt_frame_get_image () at /lib64/libmlt.so.6
#11 0x00007f34da176f4d in filter_get_image () at /usr/lib64/mlt/libmltcore.so
#12 0x00007f356ba2f72f in mlt_frame_get_image () at /lib64/libmlt.so.6
#13 0x00007f34da177484 in filter_get_image () at /usr/lib64/mlt/libmltcore.so
#14 0x00007f356ba2f72f in mlt_frame_get_image () at /lib64/libmlt.so.6
#15 0x00007f35033ecb30 in filter_get_image () at /usr/lib64/mlt/libmltfrei0r.so
#16 0x00007f356ba2f72f in mlt_frame_get_image () at /lib64/libmlt.so.6
#17 0x00007f35033ecb30 in filter_get_image () at /usr/lib64/mlt/libmltfrei0r.so
#18 0x00007f356ba2f72f in mlt_frame_get_image () at /lib64/libmlt.so.6
#19 0x00007f35033ecb30 in filter_get_image () at /usr/lib64/mlt/libmltfrei0r.so
#20 0x00007f356ba2f72f in mlt_frame_get_image () at /lib64/libmlt.so.6
#21 0x00007f35033ecb30 in filter_get_image () at /usr/lib64/mlt/libmltfrei0r.so
#22 0x00007f356ba2f72f in mlt_frame_get_image () at /lib64/libmlt.so.6
#23 0x00007f34d88c497e in filter_get_image () at /usr/lib64/mlt/libmltplus.so
#24 0x00007f356ba2f72f in mlt_frame_get_image () at /lib64/libmlt.so.6
#25 0x00007f35033ecb30 in filter_get_image () at /usr/lib64/mlt/libmltfrei0r.so
#26 0x00007f356ba2f72f in mlt_frame_get_image () at /lib64/libmlt.so.6
#27 0x00007f35033ecb30 in filter_get_image () at /usr/lib64/mlt/libmltfrei0r.so
#28 0x00007f356ba2f72f in mlt_frame_get_image () at /lib64/libmlt.so.6
#29 0x00007f35033ecb30 in filter_get_image () at /usr/lib64/mlt/libmltfrei0r.so
#30 0x00007f356ba2f72f in mlt_frame_get_image () at /lib64/libmlt.so.6
#31 0x00007f35033ecb30 in filter_get_image () at /usr/lib64/mlt/libmltfrei0r.so
#32 0x00007f356ba2f72f in mlt_frame_get_image () at /lib64/libmlt.so.6
#33 0x00007f34d88c497e in filter_get_image () at /usr/lib64/mlt/libmltplus.so
#34 0x00007f356ba2f72f in mlt_frame_get_image () at /lib64/libmlt.so.6
#35 0x00007f356ba2f72f in mlt_frame_get_image () at /lib64/libmlt.so.6
#36 0x00007f356ba2f72f in mlt_frame_get_image () at /lib64/libmlt.so.6
#37 0x00007f34d8af7f5e in get_image(mlt_frame_s*, unsigned char**,
mlt_image_format*, int*, int*, int) () at /usr/lib64/mlt/libmltqt.so
#38 0x00007f356ba2f72f in mlt_frame_get_image () at /lib64/libmlt.so.6
#39 0x00007f356ba459c9 in producer_get_image () at /lib64/libmlt.so.6
#40 0x00007f356ba2f72f in mlt_frame_get_image () at /lib64/libmlt.so.6
#41 0x00007f356ba42295 in consumer_worker_thread () at /lib64/libmlt.so.6
#42 0x00007f355eb7150b in start_thread () at /lib64/libpthread.so.0
#43 0x00007f35605e416f in clone () at /lib64/libc.so.6

Thread 25 (Thread 0x7f34a165a700 (LWP 18849)):
[KCrash Handler]
#6  0x00007f3560523660 in raise () at /lib64/libc.so.6
#7  0x00007f3560524c41 in abort () at /lib64/libc.so.6
#8  0x00007f3560565f17 in __libc_message () at /lib64/libc.so.6
#9  0x00007f356056c21a in  () at /lib64/libc.so.6
#10 0x00007f356056e000 in _int_free () at /lib64/libc.so.6
#11 0x00007f34bc17888c in updateCsplineMap () at /usr/lib64/frei0r-1/curves.so
#12 0x00007f35033ed17a in process_frei0r_item () at
/usr/lib64/mlt/libmltfrei0r.so
#13 0x00007f35033ecb8f in filter_get_image () at /usr/lib64/mlt/libmltfrei0r.so
#14 0x00007f356ba2f72f in mlt_frame_get_image () at /lib64/libmlt.so.6
#15 0x00007f35033ecb30 in filter_get_image () at /usr/lib64/mlt/libmltfrei0r.so
#16 0x00007f356ba2f72f in mlt_frame_get_image () at /lib64/libmlt.so.6
#17 0x00007f35033ecb30 in filter_get_image () at /usr/lib64/mlt/libmltfrei0r.so
#18 0x00007f356ba2f72f in mlt_frame_get_image () at /lib64/libmlt.so.6
#19 0x00007f35033ecb30 in filter_get_image () at /usr/lib64/mlt/libmltfrei0r.so
#20 0x00007f356ba2f72f in mlt_frame_get_image () at /lib64/libmlt.so.6
#21 0x00007f34d88c497e in filter_get_image () at /usr/lib64/mlt/libmltplus.so
#22 0x00007f356ba2f72f in mlt_frame_get_image () at /lib64/libmlt.so.6
#23 0x00007f356ba2f72f in mlt_frame_get_image () at /lib64/libmlt.so.6
#24 0x00007f356ba2f72f in mlt_frame_get_image () at /lib64/libmlt.so.6
#25 0x00007f34d8af7f5e in get_image(mlt_frame_s*, unsigned char**,
mlt_image_format*, int*, int*, int) () at /usr/lib64/mlt/libmltqt.so
#26 0x00007f356ba2f72f in mlt_frame_get_image () at /lib64/libmlt.so.6
#27 0x00007f356ba459c9 in producer_get_image () at /lib64/libmlt.so.6
#28 0x00007f356ba2f72f in mlt_frame_get_image () at /lib64/libmlt.so.6
#29 0x00007f356ba42295 in consumer_worker_thread () at /lib64/libmlt.so.6
#30 0x00007f355eb7150b in start_thread () at /lib64/libpthread.so.0
#31 0x00007f35605e416f in clone () at /lib64/libc.so.6

Thread 24 (Thread 0x7f34a1e5b700 (LWP 18848)):
#0  0x00007f355eb7ab1d in __lll_lock_wait () at /lib64/libpthread.so.0
#1  0x00007f355eb73ea3 in pthread_mutex_lock () at /lib64/libpthread.so.0
#2  0x00007f356ba47fa0 in mlt_pool_alloc () at /lib64/libmlt.so.6
#3  0x00007f34d86a9b27 in convert_image () at /usr/lib64/mlt/libmltavformat.so
#4  0x00007f356ba2f78e in mlt_frame_get_image () at /lib64/libmlt.so.6
#5  0x00007f34d88c497e in filter_get_image () at /usr/lib64/mlt/libmltplus.so
#6  0x00007f356ba2f72f in mlt_frame_get_image () at /lib64/libmlt.so.6
#7  0x00007f356ba2f72f in mlt_frame_get_image () at /lib64/libmlt.so.6
#8  0x00007f356ba2f72f in mlt_frame_get_image () at /lib64/libmlt.so.6
#9  0x00007f34d8af7f5e in get_image(mlt_frame_s*, unsigned char**,
mlt_image_format*, int*, int*, int) () at /usr/lib64/mlt/libmltqt.so
#10 0x00007f356ba2f72f in mlt_frame_get_image () at /lib64/libmlt.so.6
#11 0x00007f356ba459c9 in producer_get_image () at /lib64/libmlt.so.6
#12 0x00007f356ba2f72f in mlt_frame_get_image () at /lib64/libmlt.so.6
#13 0x00007f356ba42295 in consumer_worker_thread () at /lib64/libmlt.so.6
#14 0x00007f355eb7150b in start_thread () at /lib64/libpthread.so.0
#15 0x00007f35605e416f in clone () at /lib64/libc.so.6

Thread 23 (Thread 0x7f34a265c700 (LWP 18847)):
#0  0x00007f355eb7ab1d in __lll_lock_wait () at /lib64/libpthread.so.0
#1  0x00007f355eb73ea3 in pthread_mutex_lock () at /lib64/libpthread.so.0
#2  0x00007f356ba47fa0 in mlt_pool_alloc () at /lib64/libmlt.so.6
#3  0x00007f34d86a9b27 in convert_image () at /usr/lib64/mlt/libmltavformat.so
#4  0x00007f356ba2f78e in mlt_frame_get_image () at /lib64/libmlt.so.6
#5  0x00007f34d88c497e in filter_get_image () at /usr/lib64/mlt/libmltplus.so
#6  0x00007f356ba2f72f in mlt_frame_get_image () at /lib64/libmlt.so.6
#7  0x00007f356ba2f72f in mlt_frame_get_image () at /lib64/libmlt.so.6
#8  0x00007f356ba2f72f in mlt_frame_get_image () at /lib64/libmlt.so.6
#9  0x00007f34d8af7f5e in get_image(mlt_frame_s*, unsigned char**,
mlt_image_format*, int*, int*, int) () at /usr/lib64/mlt/libmltqt.so
#10 0x00007f356ba2f72f in mlt_frame_get_image () at /lib64/libmlt.so.6
#11 0x00007f356ba459c9 in producer_get_image () at /lib64/libmlt.so.6
#12 0x00007f356ba2f72f in mlt_frame_get_image () at /lib64/libmlt.so.6
#13 0x00007f356ba42295 in consumer_worker_thread () at /lib64/libmlt.so.6
#14 0x00007f355eb7150b in start_thread () at /lib64/libpthread.so.0
#15 0x00007f35605e416f in clone () at /lib64/libc.so.6

Thread 22 (Thread 0x7f34a2e5d700 (LWP 18846)):
#0  0x00007f355eb7782d in pthread_cond_wait@@GLIBC_2.3.2 () at
/lib64/libpthread.so.0
#1  0x00007f34d93c8071 in consumer_thread () at /usr/lib64/mlt/libmltsdl.so
#2  0x00007f355eb7150b in start_thread () at /lib64/libpthread.so.0
#3  0x00007f35605e416f in clone () at /lib64/libc.so.6

Thread 21 (Thread 0x7f34affff700 (LWP 18827)):
#0  0x00007f35605d5738 in read () at /lib64/libc.so.6
#1  0x00007f3558f1a0a0 in g_wakeup_acknowledge () at /lib64/libglib-2.0.so.0
#2  0x00007f3558ed59a8 in g_main_context_check () at /lib64/libglib-2.0.so.0
#3  0x00007f3558ed5e40 in g_main_context_iterate.isra () at
/lib64/libglib-2.0.so.0
#4  0x00007f3558ed5fac in g_main_context_iteration () at
/lib64/libglib-2.0.so.0
#5  0x00007f356142fc4b in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /lib64/libQt5Core.so.5
#6  0x00007f35613dd96a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/lib64/libQt5Core.so.5
#7  0x00007f356122e8ca in QThread::exec() () at /lib64/libQt5Core.so.5
#8  0x00007f3561232de2 in QThreadPrivate::start(void*) () at
/lib64/libQt5Core.so.5
#9  0x00007f355eb7150b in start_thread () at /lib64/libpthread.so.0
#10 0x00007f35605e416f in clone () at /lib64/libc.so.6

Thread 20 (Thread 0x7f34bcb7c700 (LWP 18826)):
#0  0x00007f35605d9c6b in poll () at /lib64/libc.so.6
#1  0x00007f3558ed5e99 in g_main_context_iterate.isra () at
/lib64/libglib-2.0.so.0
#2  0x00007f3558ed5fac in g_main_context_iteration () at
/lib64/libglib-2.0.so.0
#3  0x00007f356142fc4b in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /lib64/libQt5Core.so.5
#4  0x00007f35613dd96a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/lib64/libQt5Core.so.5
#5  0x00007f356122e8ca in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007f3561232de2 in QThreadPrivate::start(void*) () at
/lib64/libQt5Core.so.5
#7  0x00007f355eb7150b in start_thread () at /lib64/libpthread.so.0
#8  0x00007f35605e416f in clone () at /lib64/libc.so.6

Thread 19 (Thread 0x7f34bd37d700 (LWP 18825)):
#0  0x00007f355eb7782d in pthread_cond_wait@@GLIBC_2.3.2 () at
/lib64/libpthread.so.0
#1  0x00007f35373e2f4b in util_queue_thread_func () at
/usr/lib64/dri/radeonsi_dri.so
#2  0x00007f35373e2e67 in impl_thrd_routine () at
/usr/lib64/dri/radeonsi_dri.so
#3  0x00007f355eb7150b in start_thread () at /lib64/libpthread.so.0
#4  0x00007f35605e416f in clone () at /lib64/libc.so.6

Thread 18 (Thread 0x7f34beb8e700 (LWP 18823)):
#0  0x00007f35605d9c6b in poll () at /lib64/libc.so.6
#1  0x00007f3558ed5e99 in g_main_context_iterate.isra () at
/lib64/libglib-2.0.so.0
#2  0x00007f3558ed5fac in g_main_context_iteration () at
/lib64/libglib-2.0.so.0
#3  0x00007f356142fc4b in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /lib64/libQt5Core.so.5
#4  0x00007f35613dd96a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/lib64/libQt5Core.so.5
#5  0x00007f356122e8ca in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007f3562558e75 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#7  0x00007f3561232de2 in QThreadPrivate::start(void*) () at
/lib64/libQt5Core.so.5
#8  0x00007f355eb7150b in start_thread () at /lib64/libpthread.so.0
#9  0x00007f35605e416f in clone () at /lib64/libc.so.6

Thread 17 (Thread 0x7f34bf7ff700 (LWP 18822)):
#0  0x00007f355eb77b5b in pthread_cond_timedwait@@GLIBC_2.3.2 () at
/lib64/libpthread.so.0
#1  0x00007f3561233423 in QWaitCondition::wait(QMutex*, unsigned long) () at
/lib64/libQt5Core.so.5
#2  0x00007f356122fda2 in QThreadPoolThread::run() () at /lib64/libQt5Core.so.5
#3  0x00007f3561232de2 in QThreadPrivate::start(void*) () at
/lib64/libQt5Core.so.5
#4  0x00007f355eb7150b in start_thread () at /lib64/libpthread.so.0
#5  0x00007f35605e416f in clone () at /lib64/libc.so.6

Thread 16 (Thread 0x7f34c530f700 (LWP 18821)):
#0  0x00007f35605d9c6b in poll () at /lib64/libc.so.6
#1  0x00007f3558ed5e99 in g_main_context_iterate.isra () at
/lib64/libglib-2.0.so.0
#2  0x00007f3558ed5fac in g_main_context_iteration () at
/lib64/libglib-2.0.so.0
#3  0x00007f356142fc4b in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /lib64/libQt5Core.so.5
#4  0x00007f35613dd96a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/lib64/libQt5Core.so.5
#5  0x00007f356122e8ca in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007f3562558e75 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#7  0x00007f3561232de2 in QThreadPrivate::start(void*) () at
/lib64/libQt5Core.so.5
#8  0x00007f355eb7150b in start_thread () at /lib64/libpthread.so.0
#9  0x00007f35605e416f in clone () at /lib64/libc.so.6

Thread 15 (Thread 0x7f34dbb3b700 (LWP 18815)):
#0  0x00007f35605d9c6b in poll () at /lib64/libc.so.6
#1  0x00007f34f7ccabc1 in linux_udev_event_thread_main () at
/lib64/libusb-1.0.so.0
#2  0x00007f355eb7150b in start_thread () at /lib64/libpthread.so.0
#3  0x00007f35605e416f in clone () at /lib64/libc.so.6

Thread 14 (Thread 0x7f351c80a700 (LWP 18814)):
#0  0x00007f35605d9c6b in poll () at /lib64/libc.so.6
#1  0x00007f3558ed5e99 in g_main_context_iterate.isra () at
/lib64/libglib-2.0.so.0
#2  0x00007f3558ed5fac in g_main_context_iteration () at
/lib64/libglib-2.0.so.0
#3  0x00007f356142fc4b in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /lib64/libQt5Core.so.5
#4  0x00007f35613dd96a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/lib64/libQt5Core.so.5
#5  0x00007f356122e8ca in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007f3566dbc449 in QDBusConnectionManager::run() () at
/lib64/libQt5DBus.so.5
#7  0x00007f3561232de2 in QThreadPrivate::start(void*) () at
/lib64/libQt5Core.so.5
#8  0x00007f355eb7150b in start_thread () at /lib64/libpthread.so.0
#9  0x00007f35605e416f in clone () at /lib64/libc.so.6

Thread 13 (Thread 0x7f351effd700 (LWP 18813)):
#0  0x00007f355eb7782d in pthread_cond_wait@@GLIBC_2.3.2 () at
/lib64/libpthread.so.0
#1  0x00007f35373e2f4b in util_queue_thread_func () at
/usr/lib64/dri/radeonsi_dri.so
#2  0x00007f35373e2e67 in impl_thrd_routine () at
/usr/lib64/dri/radeonsi_dri.so
#3  0x00007f355eb7150b in start_thread () at /lib64/libpthread.so.0
#4  0x00007f35605e416f in clone () at /lib64/libc.so.6

Thread 12 (Thread 0x7f351f7fe700 (LWP 18812)):
#0  0x00007f355eb7782d in pthread_cond_wait@@GLIBC_2.3.2 () at
/lib64/libpthread.so.0
#1  0x00007f35373e2f4b in util_queue_thread_func () at
/usr/lib64/dri/radeonsi_dri.so
#2  0x00007f35373e2e67 in impl_thrd_routine () at
/usr/lib64/dri/radeonsi_dri.so
#3  0x00007f355eb7150b in start_thread () at /lib64/libpthread.so.0
#4  0x00007f35605e416f in clone () at /lib64/libc.so.6

Thread 11 (Thread 0x7f351ffff700 (LWP 18811)):
#0  0x00007f355eb7782d in pthread_cond_wait@@GLIBC_2.3.2 () at
/lib64/libpthread.so.0
#1  0x00007f35373e2f4b in util_queue_thread_func () at
/usr/lib64/dri/radeonsi_dri.so
#2  0x00007f35373e2e67 in impl_thrd_routine () at
/usr/lib64/dri/radeonsi_dri.so
#3  0x00007f355eb7150b in start_thread () at /lib64/libpthread.so.0
#4  0x00007f35605e416f in clone () at /lib64/libc.so.6

Thread 10 (Thread 0x7f352cafd700 (LWP 18810)):
#0  0x00007f355eb7782d in pthread_cond_wait@@GLIBC_2.3.2 () at
/lib64/libpthread.so.0
#1  0x00007f35373e2f4b in util_queue_thread_func () at
/usr/lib64/dri/radeonsi_dri.so
#2  0x00007f35373e2e67 in impl_thrd_routine () at
/usr/lib64/dri/radeonsi_dri.so
#3  0x00007f355eb7150b in start_thread () at /lib64/libpthread.so.0
#4  0x00007f35605e416f in clone () at /lib64/libc.so.6

Thread 9 (Thread 0x7f3534b94700 (LWP 18809)):
#0  0x00007f355eb7782d in pthread_cond_wait@@GLIBC_2.3.2 () at
/lib64/libpthread.so.0
#1  0x00007f35373e2f4b in util_queue_thread_func () at
/usr/lib64/dri/radeonsi_dri.so
#2  0x00007f35373e2e67 in impl_thrd_routine () at
/usr/lib64/dri/radeonsi_dri.so
#3  0x00007f355eb7150b in start_thread () at /lib64/libpthread.so.0
#4  0x00007f35605e416f in clone () at /lib64/libc.so.6

Thread 8 (Thread 0x7f3535395700 (LWP 18808)):
#0  0x00007f355eb7782d in pthread_cond_wait@@GLIBC_2.3.2 () at
/lib64/libpthread.so.0
#1  0x00007f35373e2f4b in util_queue_thread_func () at
/usr/lib64/dri/radeonsi_dri.so
#2  0x00007f35373e2e67 in impl_thrd_routine () at
/usr/lib64/dri/radeonsi_dri.so
#3  0x00007f355eb7150b in start_thread () at /lib64/libpthread.so.0
#4  0x00007f35605e416f in clone () at /lib64/libc.so.6

Thread 7 (Thread 0x7f3535b96700 (LWP 18807)):
#0  0x00007f355eb7782d in pthread_cond_wait@@GLIBC_2.3.2 () at
/lib64/libpthread.so.0
#1  0x00007f35373e2f4b in util_queue_thread_func () at
/usr/lib64/dri/radeonsi_dri.so
#2  0x00007f35373e2e67 in impl_thrd_routine () at
/usr/lib64/dri/radeonsi_dri.so
#3  0x00007f355eb7150b in start_thread () at /lib64/libpthread.so.0
#4  0x00007f35605e416f in clone () at /lib64/libc.so.6

Thread 6 (Thread 0x7f3536397700 (LWP 18806)):
#0  0x00007f355eb7782d in pthread_cond_wait@@GLIBC_2.3.2 () at
/lib64/libpthread.so.0
#1  0x00007f35373e2f4b in util_queue_thread_func () at
/usr/lib64/dri/radeonsi_dri.so
#2  0x00007f35373e2e67 in impl_thrd_routine () at
/usr/lib64/dri/radeonsi_dri.so
#3  0x00007f355eb7150b in start_thread () at /lib64/libpthread.so.0
#4  0x00007f35605e416f in clone () at /lib64/libc.so.6

Thread 5 (Thread 0x7f353dc6f700 (LWP 18805)):
#0  0x00007f35605d9c6b in poll () at /lib64/libc.so.6
#1  0x00007f3558ed5e99 in g_main_context_iterate.isra () at
/lib64/libglib-2.0.so.0
#2  0x00007f3558ed6232 in g_main_loop_run () at /lib64/libglib-2.0.so.0
#3  0x00007f355a7e6b56 in gdbus_shared_thread_func () at /lib64/libgio-2.0.so.0
#4  0x00007f3558efd486 in g_thread_proxy () at /lib64/libglib-2.0.so.0
#5  0x00007f355eb7150b in start_thread () at /lib64/libpthread.so.0
#6  0x00007f35605e416f in clone () at /lib64/libc.so.6

Thread 4 (Thread 0x7f353e470700 (LWP 18804)):
#0  0x00007f35605d9c6b in poll () at /lib64/libc.so.6
#1  0x00007f3558ed5e99 in g_main_context_iterate.isra () at
/lib64/libglib-2.0.so.0
#2  0x00007f3558ed5fac in g_main_context_iteration () at
/lib64/libglib-2.0.so.0
#3  0x00007f3558ed5ff1 in glib_worker_main () at /lib64/libglib-2.0.so.0
#4  0x00007f3558efd486 in g_thread_proxy () at /lib64/libglib-2.0.so.0
#5  0x00007f355eb7150b in start_thread () at /lib64/libpthread.so.0
#6  0x00007f35605e416f in clone () at /lib64/libc.so.6

Thread 3 (Thread 0x7f3547401700 (LWP 18803)):
#0  0x00007f35605d9c6b in poll () at /lib64/libc.so.6
#1  0x00007f355d7d3fe7 in _xcb_conn_wait () at /lib64/libxcb.so.1
#2  0x00007f355d7d5dda in xcb_wait_for_event () at /lib64/libxcb.so.1
#3  0x00007f3549563bf9 in QXcbEventReader::run() () at /lib64/libQt5XcbQpa.so.5
#4  0x00007f3561232de2 in QThreadPrivate::start(void*) () at
/lib64/libQt5Core.so.5
#5  0x00007f355eb7150b in start_thread () at /lib64/libpthread.so.0
#6  0x00007f35605e416f in clone () at /lib64/libc.so.6

Thread 2 (Thread 0x7f35511ed700 (LWP 18802)):
#0  0x00007f355eb7782d in pthread_cond_wait@@GLIBC_2.3.2 () at
/lib64/libpthread.so.0
#1  0x00007f3560ebce0c in
std::condition_variable::wait(std::unique_lock<std::mutex>&) () at
/lib64/libstdc++.so.6
#2  0x00007f35650f0bb7 in bmalloc::AsyncTask<bmalloc::Heap, void
(bmalloc::Heap::*)()>::threadRunLoop() () at /lib64/libQt5WebKit.so.5
#3  0x00007f35650f0cf9 in  () at /lib64/libQt5WebKit.so.5
#4  0x00007f3560ec314f in execute_native_thread_routine () at
/lib64/libstdc++.so.6
#5  0x00007f355eb7150b in start_thread () at /lib64/libpthread.so.0
#6  0x00007f35605e416f in clone () at /lib64/libc.so.6

Thread 1 (Thread 0x7f356c9e6940 (LWP 18801)):
#0  0x00007f35605f11dc in __lll_lock_wait_private () at /lib64/libc.so.6
#1  0x00007f35605718be in realloc () at /lib64/libc.so.6
#2  0x00007f3561233859 in QArrayData::reallocateUnaligned(QArrayData*, unsigned
long, unsigned long, QFlags<QArrayData::AllocationOption>) () at
/lib64/libQt5Core.so.5
#3  0x00007f356129ff8a in QString::reallocData(unsigned int, bool) () at
/lib64/libQt5Core.so.5
#4  0x00007f35612a0015 in QString::resize(int) () at /lib64/libQt5Core.so.5
#5  0x00007f35612a5979 in QString::vasprintf(char const*, __va_list_tag*) () at
/lib64/libQt5Core.so.5
#6  0x00007f356121ed4b in qt_message(QtMsgType, QMessageLogContext const&, char
const*, __va_list_tag*) () at /lib64/libQt5Core.so.5
#7  0x00007f356121fafd in QMessageLogger::warning(char const*, ...) const () at
/lib64/libQt5Core.so.5
#8  0x00007f356142fab9 in socketNotifierSourceCheck(_GSource*) () at
/lib64/libQt5Core.so.5
#9  0x00007f3558ed58c9 in g_main_context_check () at /lib64/libglib-2.0.so.0
#10 0x00007f3558ed5e40 in g_main_context_iterate.isra () at
/lib64/libglib-2.0.so.0
#11 0x00007f3558ed5fac in g_main_context_iteration () at
/lib64/libglib-2.0.so.0
#12 0x00007f356142fc2f in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /lib64/libQt5Core.so.5
#13 0x00007f35613dd96a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/lib64/libQt5Core.so.5
#14 0x00007f35613e6094 in QCoreApplication::exec() () at /lib64/libQt5Core.so.5
#15 0x000055a9e96256f1 in main ()

Reported using DrKonqi

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