Bug 373744

Summary: Kontact crashes when deleting emails
Product: [Applications] kontact Reporter: thanosk
Component: generalAssignee: kdepim bugs <kdepim-bugs>
Status: RESOLVED DUPLICATE    
Severity: crash Keywords: drkonqi
Priority: NOR    
Version: unspecified   
Target Milestone: ---   
Platform: Fedora RPMs   
OS: Linux   
Latest Commit: Version Fixed In:
Sentry Crash Report:

Description thanosk 2016-12-17 08:09:47 UTC 
Application: kontact (5.3.3 (QtWebEngine))

Qt Version: 5.7.1
Frameworks Version: 5.27.0
Operating System: Linux 4.8.14-300.fc25.x86_64 x86_64
Distribution: "Fedora release 25 (Twenty Five)"

-- Information about the crash:
This happens quite often when deleting or just viewing emails in Kontact

The crash can be reproduced sometimes.

-- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
84	T_PSEUDO (SYSCALL_SYMBOL, SYSCALL_NAME, SYSCALL_NARGS)
[Current thread is 1 (Thread 0x7f7e12daf940 (LWP 3032))]

Thread 35 (Thread 0x7f7cd3b32700 (LWP 3149)):
#0  0x00007ffdaffc0b12 in clock_gettime ()
#1  0x00007f7e2aa8a686 in __GI___clock_gettime (clock_id=1, tp=0x7f7cd3b319d0) at ../sysdeps/unix/clock_gettime.c:115
#2  0x00007f7e2b71faf1 in qt_gettime() () from /lib64/libQt5Core.so.5
#3  0x00007f7e2b874de9 in QTimerInfoList::updateCurrentTime() () from /lib64/libQt5Core.so.5
#4  0x00007f7e2b8751e5 in QTimerInfoList::timerWait(timespec&) () from /lib64/libQt5Core.so.5
#5  0x00007f7e2b8763dc in timerSourcePrepareHelper(GTimerSource*, int*) () from /lib64/libQt5Core.so.5
#6  0x00007f7e2b8764a5 in timerSourcePrepare(_GSource*, int*) () from /lib64/libQt5Core.so.5
#7  0x00007f7e1de40699 in g_main_context_prepare () from /lib64/libglib-2.0.so.0
#8  0x00007f7e1de4107b in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#9  0x00007f7e1de4126c in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#10 0x00007f7e2b87673b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#11 0x00007f7e2b82773a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#12 0x00007f7e2b6845f3 in QThread::exec() () from /lib64/libQt5Core.so.5
#13 0x00007f7e2b6889da in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#14 0x00007f7e228c56ca in start_thread (arg=0x7f7cd3b32700) at pthread_create.c:333
#15 0x00007f7e2aa7bf6f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 34 (Thread 0x7f7cd4940700 (LWP 3110)):
#0  0x00007ffdaffc0b12 in clock_gettime ()
#1  0x00007f7e2aa8a686 in __GI___clock_gettime (clock_id=1, tp=0x7f7cd493f9d0) at ../sysdeps/unix/clock_gettime.c:115
#2  0x00007f7e2b71faf1 in qt_gettime() () from /lib64/libQt5Core.so.5
#3  0x00007f7e2b874de9 in QTimerInfoList::updateCurrentTime() () from /lib64/libQt5Core.so.5
#4  0x00007f7e2b8751e5 in QTimerInfoList::timerWait(timespec&) () from /lib64/libQt5Core.so.5
#5  0x00007f7e2b8763dc in timerSourcePrepareHelper(GTimerSource*, int*) () from /lib64/libQt5Core.so.5
#6  0x00007f7e2b8764a5 in timerSourcePrepare(_GSource*, int*) () from /lib64/libQt5Core.so.5
#7  0x00007f7e1de40699 in g_main_context_prepare () from /lib64/libglib-2.0.so.0
#8  0x00007f7e1de4107b in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#9  0x00007f7e1de4126c in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#10 0x00007f7e2b87673b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#11 0x00007f7e2b82773a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#12 0x00007f7e2b6845f3 in QThread::exec() () from /lib64/libQt5Core.so.5
#13 0x00007f7e2b6889da in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#14 0x00007f7e228c56ca in start_thread (arg=0x7f7cd4940700) at pthread_create.c:333
#15 0x00007f7e2aa7bf6f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 33 (Thread 0x7f7cd5141700 (LWP 3106)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f7e26dedc49 in base::SequencedWorkerPool::Inner::ThreadLoop(base::SequencedWorkerPool::Worker*) () from /lib64/libQt5WebEngineCore.so.5
#2  0x00007f7e26dee289 in base::SequencedWorkerPool::Worker::Run() () from /lib64/libQt5WebEngineCore.so.5
#3  0x00007f7e26dee440 in base::SimpleThread::ThreadMain() () from /lib64/libQt5WebEngineCore.so.5
#4  0x00007f7e26deafdc in base::(anonymous namespace)::ThreadFunc(void*) () from /lib64/libQt5WebEngineCore.so.5
#5  0x00007f7e228c56ca in start_thread (arg=0x7f7cd5141700) at pthread_create.c:333
#6  0x00007f7e2aa7bf6f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 32 (Thread 0x7f7ce4b59700 (LWP 3085)):
#0  0x00007f7e2aa7000d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f7e1de41156 in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#2  0x00007f7e1de4126c in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#3  0x00007f7e2b87673b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#4  0x00007f7e2b82773a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#5  0x00007f7e2b6845f3 in QThread::exec() () from /lib64/libQt5Core.so.5
#6  0x00007f7e2b6889da in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#7  0x00007f7e228c56ca in start_thread (arg=0x7f7ce4b59700) at pthread_create.c:333
#8  0x00007f7e2aa7bf6f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 31 (Thread 0x7f7ce535a700 (LWP 3083)):
#0  0x00007f7e1de867f0 in g_mutex_lock () from /lib64/libglib-2.0.so.0
#1  0x00007f7e1de40bb6 in g_main_context_check () from /lib64/libglib-2.0.so.0
#2  0x00007f7e1de410f4 in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#3  0x00007f7e1de4126c in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#4  0x00007f7e2b87673b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#5  0x00007f7e2b82773a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#6  0x00007f7e2b6845f3 in QThread::exec() () from /lib64/libQt5Core.so.5
#7  0x00007f7e2b6889da in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#8  0x00007f7e228c56ca in start_thread (arg=0x7f7ce535a700) at pthread_create.c:333
#9  0x00007f7e2aa7bf6f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 30 (Thread 0x7f7ce77fe700 (LWP 3077)):
#0  0x00007f7e2aa6bbdd in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f7e1de85450 in g_wakeup_acknowledge () from /lib64/libglib-2.0.so.0
#2  0x00007f7e1de40c60 in g_main_context_check () from /lib64/libglib-2.0.so.0
#3  0x00007f7e1de410f4 in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#4  0x00007f7e1de4126c in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#5  0x00007f7e2b87673b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#6  0x00007f7e2b82773a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#7  0x00007f7e2b6845f3 in QThread::exec() () from /lib64/libQt5Core.so.5
#8  0x00007f7e2b6889da in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#9  0x00007f7e228c56ca in start_thread (arg=0x7f7ce77fe700) at pthread_create.c:333
#10 0x00007f7e2aa7bf6f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 29 (Thread 0x7f7ce7fff700 (LWP 3075)):
#0  0x00007f7e2aa6bbdd in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f7e1de85450 in g_wakeup_acknowledge () from /lib64/libglib-2.0.so.0
#2  0x00007f7e1de40c60 in g_main_context_check () from /lib64/libglib-2.0.so.0
#3  0x00007f7e1de410f4 in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#4  0x00007f7e1de4126c in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#5  0x00007f7e2b87673b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#6  0x00007f7e2b82773a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#7  0x00007f7e2b6845f3 in QThread::exec() () from /lib64/libQt5Core.so.5
#8  0x00007f7e2b6889da in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#9  0x00007f7e228c56ca in start_thread (arg=0x7f7ce7fff700) at pthread_create.c:333
#10 0x00007f7e2aa7bf6f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 28 (Thread 0x7f7cfd364700 (LWP 3073)):
#0  0x00007ffdaffc0b12 in clock_gettime ()
#1  0x00007f7e2aa8a686 in __GI___clock_gettime (clock_id=1, tp=0x7f7cfd3639d0) at ../sysdeps/unix/clock_gettime.c:115
#2  0x00007f7e2b71faf1 in qt_gettime() () from /lib64/libQt5Core.so.5
#3  0x00007f7e2b874de9 in QTimerInfoList::updateCurrentTime() () from /lib64/libQt5Core.so.5
#4  0x00007f7e2b8751e5 in QTimerInfoList::timerWait(timespec&) () from /lib64/libQt5Core.so.5
#5  0x00007f7e2b8763dc in timerSourcePrepareHelper(GTimerSource*, int*) () from /lib64/libQt5Core.so.5
#6  0x00007f7e2b8764a5 in timerSourcePrepare(_GSource*, int*) () from /lib64/libQt5Core.so.5
#7  0x00007f7e1de40699 in g_main_context_prepare () from /lib64/libglib-2.0.so.0
#8  0x00007f7e1de4107b in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#9  0x00007f7e1de4126c in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#10 0x00007f7e2b87673b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#11 0x00007f7e2b82773a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#12 0x00007f7e2b6845f3 in QThread::exec() () from /lib64/libQt5Core.so.5
#13 0x00007f7e2b6889da in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#14 0x00007f7e228c56ca in start_thread (arg=0x7f7cfd364700) at pthread_create.c:333
#15 0x00007f7e2aa7bf6f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 27 (Thread 0x7f7cfe95d700 (LWP 3069)):
#0  0x00007f7e1de86814 in g_mutex_unlock () from /lib64/libglib-2.0.so.0
#1  0x00007f7e1de4068c in g_main_context_prepare () from /lib64/libglib-2.0.so.0
#2  0x00007f7e1de4107b in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#3  0x00007f7e1de4126c in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#4  0x00007f7e2b87673b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#5  0x00007f7e2b82773a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#6  0x00007f7e2b6845f3 in QThread::exec() () from /lib64/libQt5Core.so.5
#7  0x00007f7e2b6889da in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#8  0x00007f7e228c56ca in start_thread (arg=0x7f7cfe95d700) at pthread_create.c:333
#9  0x00007f7e2aa7bf6f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 26 (Thread 0x7f7cff15e700 (LWP 3068)):
#0  0x00007f7e2b876734 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#1  0x00007f7e2b82773a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#2  0x00007f7e2b6845f3 in QThread::exec() () from /lib64/libQt5Core.so.5
#3  0x00007f7e2b6889da in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#4  0x00007f7e228c56ca in start_thread (arg=0x7f7cff15e700) at pthread_create.c:333
#5  0x00007f7e2aa7bf6f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 25 (Thread 0x7f7cff95f700 (LWP 3067)):
#0  0x00007ffdaffc0b12 in clock_gettime ()
#1  0x00007f7e2aa8a686 in __GI___clock_gettime (clock_id=1, tp=0x7f7cff95e9d0) at ../sysdeps/unix/clock_gettime.c:115
#2  0x00007f7e2b71faf1 in qt_gettime() () from /lib64/libQt5Core.so.5
#3  0x00007f7e2b874de9 in QTimerInfoList::updateCurrentTime() () from /lib64/libQt5Core.so.5
#4  0x00007f7e2b8751e5 in QTimerInfoList::timerWait(timespec&) () from /lib64/libQt5Core.so.5
#5  0x00007f7e2b8763dc in timerSourcePrepareHelper(GTimerSource*, int*) () from /lib64/libQt5Core.so.5
#6  0x00007f7e2b8764a5 in timerSourcePrepare(_GSource*, int*) () from /lib64/libQt5Core.so.5
#7  0x00007f7e1de40699 in g_main_context_prepare () from /lib64/libglib-2.0.so.0
#8  0x00007f7e1de4107b in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#9  0x00007f7e1de4126c in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#10 0x00007f7e2b87673b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#11 0x00007f7e2b82773a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#12 0x00007f7e2b6845f3 in QThread::exec() () from /lib64/libQt5Core.so.5
#13 0x00007f7e2b6889da in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#14 0x00007f7e228c56ca in start_thread (arg=0x7f7cff95f700) at pthread_create.c:333
#15 0x00007f7e2aa7bf6f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 24 (Thread 0x7f7d001a0700 (LWP 3066)):
#0  0x00007f7e2b876400 in timerSourcePrepareHelper(GTimerSource*, int*) () from /lib64/libQt5Core.so.5
#1  0x00007f7e2b8764a5 in timerSourcePrepare(_GSource*, int*) () from /lib64/libQt5Core.so.5
#2  0x00007f7e1de40699 in g_main_context_prepare () from /lib64/libglib-2.0.so.0
#3  0x00007f7e1de4107b in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#4  0x00007f7e1de4126c in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#5  0x00007f7e2b87673b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#6  0x00007f7e2b82773a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#7  0x00007f7e2b6845f3 in QThread::exec() () from /lib64/libQt5Core.so.5
#8  0x00007f7e2b6889da in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#9  0x00007f7e228c56ca in start_thread (arg=0x7f7d001a0700) at pthread_create.c:333
#10 0x00007f7e2aa7bf6f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 23 (Thread 0x7f7d9e7fb700 (LWP 3065)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f7e14c872f4 in QTWTF::TCMalloc_PageHeap::scavengerThread() () from /lib64/libQt5Script.so.5
#2  0x00007f7e14c87339 in QTWTF::TCMalloc_PageHeap::runScavengerThread(void*) () from /lib64/libQt5Script.so.5
#3  0x00007f7e228c56ca in start_thread (arg=0x7f7d9e7fb700) at pthread_create.c:333
#4  0x00007f7e2aa7bf6f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 22 (Thread 0x7f7d9effc700 (LWP 3060)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f7e26dedc49 in base::SequencedWorkerPool::Inner::ThreadLoop(base::SequencedWorkerPool::Worker*) () from /lib64/libQt5WebEngineCore.so.5
#2  0x00007f7e26dee289 in base::SequencedWorkerPool::Worker::Run() () from /lib64/libQt5WebEngineCore.so.5
#3  0x00007f7e26dee440 in base::SimpleThread::ThreadMain() () from /lib64/libQt5WebEngineCore.so.5
#4  0x00007f7e26deafdc in base::(anonymous namespace)::ThreadFunc(void*) () from /lib64/libQt5WebEngineCore.so.5
#5  0x00007f7e228c56ca in start_thread (arg=0x7f7d9effc700) at pthread_create.c:333
#6  0x00007f7e2aa7bf6f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 21 (Thread 0x7f7d9f7fd700 (LWP 3059)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f7e26dedc49 in base::SequencedWorkerPool::Inner::ThreadLoop(base::SequencedWorkerPool::Worker*) () from /lib64/libQt5WebEngineCore.so.5
#2  0x00007f7e26dee289 in base::SequencedWorkerPool::Worker::Run() () from /lib64/libQt5WebEngineCore.so.5
#3  0x00007f7e26dee440 in base::SimpleThread::ThreadMain() () from /lib64/libQt5WebEngineCore.so.5
#4  0x00007f7e26deafdc in base::(anonymous namespace)::ThreadFunc(void*) () from /lib64/libQt5WebEngineCore.so.5
#5  0x00007f7e228c56ca in start_thread (arg=0x7f7d9f7fd700) at pthread_create.c:333
#6  0x00007f7e2aa7bf6f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 20 (Thread 0x7f7d9fffe700 (LWP 3058)):
#0  __lll_lock_wait_private () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:95
#1  0x00007f7e2aa8bac4 in ___fprintf_chk (fp=0x7f7e2ad36730 <_IO_stdfile_2_lock>, flag=flag@entry=1, format=format@entry=0x7f7e1c444c74 "[%s] %s\n") at fprintf_chk.c:30
#2  0x00007f7e1c42c86e in fprintf (__fmt=0x7f7e1c444c74 "[%s] %s\n", __stream=<optimized out>) at /usr/include/bits/stdio2.h:97
#3  event_log (msg=0x7f7d9fffd550 "epoll_wait: Bad file descriptor", severity=2) at log.c:222
#4  _warn_helper (severity=severity@entry=2, errstr=0x7f7e2aafdc0e "Bad file descriptor", fmt=fmt@entry=0x7f7e1c44545a "epoll_wait", ap=ap@entry=0x7f7d9fffd980) at log.c:187
#5  0x00007f7e1c42ca64 in event_warn (fmt=fmt@entry=0x7f7e1c44545a "epoll_wait") at log.c:101
#6  0x00007f7e1c4311e8 in epoll_dispatch (base=0x7f7d900019e0, tv=<optimized out>) at epoll.c:413
#7  0x00007f7e1c41b18a in event_base_loop (base=0x7f7d900019e0, flags=2) at event.c:1625
#8  0x00007f7e26d9b97e in base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () from /lib64/libQt5WebEngineCore.so.5
#9  0x00007f7e26dd684a in base::RunLoop::Run() () from /lib64/libQt5WebEngineCore.so.5
#10 0x00007f7e26dc12e5 in base::MessageLoop::Run() () from /lib64/libQt5WebEngineCore.so.5
#11 0x00007f7e26dee9fa in base::Thread::ThreadMain() () from /lib64/libQt5WebEngineCore.so.5
#12 0x00007f7e26deafdc in base::(anonymous namespace)::ThreadFunc(void*) () from /lib64/libQt5WebEngineCore.so.5
#13 0x00007f7e228c56ca in start_thread (arg=0x7f7d9fffe700) at pthread_create.c:333
#14 0x00007f7e2aa7bf6f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 19 (Thread 0x7f7dd4ff9700 (LWP 3057)):
[KCrash Handler]
#6  0x00007f7dff650da9 in nouveau_fence_trigger_work () from /usr/lib64/dri/nouveau_dri.so
#7  0x00007f7dff651007 in nouveau_fence_update () from /usr/lib64/dri/nouveau_dri.so
#8  0x00007f7dff6f36ff in nv50_default_kick_notify () from /usr/lib64/dri/nouveau_dri.so
#9  0x00007f7dfef32d5c in pushbuf_submit.isra () from /lib64/libdrm_nouveau.so.2
#10 0x00007f7dfef3300f in pushbuf_flush () from /lib64/libdrm_nouveau.so.2
#11 0x00007f7dfef33bc0 in nouveau_pushbuf_kick () from /lib64/libdrm_nouveau.so.2
#12 0x00007f7dff6f3c16 in nv50_flush () from /usr/lib64/dri/nouveau_dri.so
#13 0x00007f7dff2924b9 in _mesa_FenceSync () from /usr/lib64/dri/nouveau_dri.so
#14 0x00007f7e2695f99d in gfx::GLFenceARB::GLFenceARB() () from /lib64/libQt5WebEngineCore.so.5
#15 0x00007f7e2695f506 in gfx::GLFence::Create() () from /lib64/libQt5WebEngineCore.so.5
#16 0x00007f7e273dc100 in gpu::gles2::CommandsCompletedQuery::End(int) () from /lib64/libQt5WebEngineCore.so.5
#17 0x00007f7e2737a891 in gpu::gles2::GLES2DecoderImpl::HandleEndQueryEXT(unsigned int, void const*) () from /lib64/libQt5WebEngineCore.so.5
#18 0x00007f7e273a77c2 in gpu::error::Error gpu::gles2::GLES2DecoderImpl::DoCommandsImpl<false>(unsigned int, void const*, int, int*) () from /lib64/libQt5WebEngineCore.so.5
#19 0x00007f7e273f637a in gpu::CommandParser::ProcessCommands(int) () from /lib64/libQt5WebEngineCore.so.5
#20 0x00007f7e273bb56a in gpu::GpuScheduler::PutChanged() () from /lib64/libQt5WebEngineCore.so.5
#21 0x00007f7e26777490 in content::GpuCommandBufferStub::OnAsyncFlush(int, unsigned int, std::vector<ui::LatencyInfo, std::allocator<ui::LatencyInfo> > const&) () from /lib64/libQt5WebEngineCore.so.5
#22 0x00007f7e2677aad1 in content::GpuCommandBufferStub::OnMessageReceived(IPC::Message const&) () from /lib64/libQt5WebEngineCore.so.5
#23 0x00007f7e2677620e in content::GpuChannel::HandleMessage() [clone .part.322] () from /lib64/libQt5WebEngineCore.so.5
#24 0x00007f7e26e15fa9 in base::debug::TaskAnnotator::RunTask(char const*, base::PendingTask const&) () from /lib64/libQt5WebEngineCore.so.5
#25 0x00007f7e26dc1ed9 in base::MessageLoop::RunTask(base::PendingTask const&) () from /lib64/libQt5WebEngineCore.so.5
#26 0x00007f7e26dc2a99 in base::MessageLoop::DeferOrRunPendingTask(base::PendingTask const&) () from /lib64/libQt5WebEngineCore.so.5
#27 0x00007f7e26dc2f52 in base::MessageLoop::DoWork() () from /lib64/libQt5WebEngineCore.so.5
#28 0x00007f7e26dc4dc9 in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () from /lib64/libQt5WebEngineCore.so.5
#29 0x00007f7e26dd684a in base::RunLoop::Run() () from /lib64/libQt5WebEngineCore.so.5
#30 0x00007f7e26dc12e5 in base::MessageLoop::Run() () from /lib64/libQt5WebEngineCore.so.5
#31 0x00007f7e26dee9fa in base::Thread::ThreadMain() () from /lib64/libQt5WebEngineCore.so.5
#32 0x00007f7e26deafdc in base::(anonymous namespace)::ThreadFunc(void*) () from /lib64/libQt5WebEngineCore.so.5
#33 0x00007f7e228c56ca in start_thread (arg=0x7f7dd4ff9700) at pthread_create.c:333
#34 0x00007f7e2aa7bf6f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 18 (Thread 0x7f7dd57fa700 (LWP 3056)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f7e2698f1c0 in mojo::system::Waiter::Wait(unsigned long, unsigned long*) () from /lib64/libQt5WebEngineCore.so.5
#2  0x00007f7e26977ff0 in mojo::system::Core::WaitManyInternal(unsigned int const*, unsigned int const*, unsigned int, unsigned long, unsigned int*, mojo::system::HandleSignalsState*) () from /lib64/libQt5WebEngineCore.so.5
#3  0x00007f7e2697837b in mojo::system::Core::Wait(unsigned int, unsigned int, unsigned long, mojo::system::UserPointer<MojoHandleSignalsState>) () from /lib64/libQt5WebEngineCore.so.5
#4  0x00007f7e2697400a in MojoWait () from /lib64/libQt5WebEngineCore.so.5
#5  0x00007f7e27aed82e in mojo::common::MessagePumpMojo::WaitForReadyHandles(mojo::common::MessagePumpMojo::RunState const&) const () from /lib64/libQt5WebEngineCore.so.5
#6  0x00007f7e27aefbe4 in mojo::common::MessagePumpMojo::DoInternalWork(mojo::common::MessagePumpMojo::RunState const&, bool) () from /lib64/libQt5WebEngineCore.so.5
#7  0x00007f7e27aefc35 in mojo::common::MessagePumpMojo::DoRunLoop(mojo::common::MessagePumpMojo::RunState*, base::MessagePump::Delegate*) () from /lib64/libQt5WebEngineCore.so.5
#8  0x00007f7e27aefd09 in mojo::common::MessagePumpMojo::Run(base::MessagePump::Delegate*) () from /lib64/libQt5WebEngineCore.so.5
#9  0x00007f7e26dd684a in base::RunLoop::Run() () from /lib64/libQt5WebEngineCore.so.5
#10 0x00007f7e26dc12e5 in base::MessageLoop::Run() () from /lib64/libQt5WebEngineCore.so.5
#11 0x00007f7e26dee9fa in base::Thread::ThreadMain() () from /lib64/libQt5WebEngineCore.so.5
#12 0x00007f7e26deafdc in base::(anonymous namespace)::ThreadFunc(void*) () from /lib64/libQt5WebEngineCore.so.5
#13 0x00007f7e228c56ca in start_thread (arg=0x7f7dd57fa700) at pthread_create.c:333
#14 0x00007f7e2aa7bf6f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 17 (Thread 0x7f7dd5ffb700 (LWP 3055)):
#0  0x00007f7e2aa7000d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f7e060b0f51 in poll (__timeout=-1, __nfds=3, __fds=0x7f7da4006c50) at /usr/include/bits/poll2.h:46
#2  poll_func (ufds=0x7f7da4006c50, nfds=3, timeout=-1, userdata=0x55a891841e50) at pulse/thread-mainloop.c:69
#3  0x00007f7e060a2721 in pa_mainloop_poll (m=m@entry=0x55a891844290) at pulse/mainloop.c:844
#4  0x00007f7e060a2dbe in pa_mainloop_iterate (m=0x55a891844290, block=<optimized out>, retval=0x0) at pulse/mainloop.c:926
#5  0x00007f7e060a2e70 in pa_mainloop_run (m=0x55a891844290, retval=retval@entry=0x0) at pulse/mainloop.c:944
#6  0x00007f7e060b0e99 in thread (userdata=0x55a8918478d0) at pulse/thread-mainloop.c:100
#7  0x00007f7e05c4b178 in internal_thread_func (userdata=0x55a89183f770) at pulsecore/thread-posix.c:81
#8  0x00007f7e228c56ca in start_thread (arg=0x7f7dd5ffb700) at pthread_create.c:333
#9  0x00007f7e2aa7bf6f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 16 (Thread 0x7f7dd67fc700 (LWP 3054)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00007f7e26de2912 in base::ConditionVariable::TimedWait(base::TimeDelta const&) () from /lib64/libQt5WebEngineCore.so.5
#2  0x00007f7e26de31b5 in base::WaitableEvent::TimedWait(base::TimeDelta const&) () from /lib64/libQt5WebEngineCore.so.5
#3  0x00007f7e26dc4e51 in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () from /lib64/libQt5WebEngineCore.so.5
#4  0x00007f7e26dd684a in base::RunLoop::Run() () from /lib64/libQt5WebEngineCore.so.5
#5  0x00007f7e26dc12e5 in base::MessageLoop::Run() () from /lib64/libQt5WebEngineCore.so.5
#6  0x00007f7e26dee9fa in base::Thread::ThreadMain() () from /lib64/libQt5WebEngineCore.so.5
#7  0x00007f7e26deafdc in base::(anonymous namespace)::ThreadFunc(void*) () from /lib64/libQt5WebEngineCore.so.5
#8  0x00007f7e228c56ca in start_thread (arg=0x7f7dd67fc700) at pthread_create.c:333
#9  0x00007f7e2aa7bf6f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 15 (Thread 0x7f7dd6ffd700 (LWP 3053)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f7e264a8a0d in cc::SingleThreadTaskGraphRunner::Run() () from /lib64/libQt5WebEngineCore.so.5
#2  0x00007f7e26dee31e in base::DelegateSimpleThread::Run() () from /lib64/libQt5WebEngineCore.so.5
#3  0x00007f7e26dee440 in base::SimpleThread::ThreadMain() () from /lib64/libQt5WebEngineCore.so.5
#4  0x00007f7e26deafdc in base::(anonymous namespace)::ThreadFunc(void*) () from /lib64/libQt5WebEngineCore.so.5
#5  0x00007f7e228c56ca in start_thread (arg=0x7f7dd6ffd700) at pthread_create.c:333
#6  0x00007f7e2aa7bf6f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 14 (Thread 0x7f7dd77fe700 (LWP 3052)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f7e26de3125 in base::WaitableEvent::TimedWait(base::TimeDelta const&) () from /lib64/libQt5WebEngineCore.so.5
#2  0x00007f7e26de31e5 in base::WaitableEvent::Wait() () from /lib64/libQt5WebEngineCore.so.5
#3  0x00007f7e26dc4e13 in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () from /lib64/libQt5WebEngineCore.so.5
#4  0x00007f7e26dd684a in base::RunLoop::Run() () from /lib64/libQt5WebEngineCore.so.5
#5  0x00007f7e26dc12e5 in base::MessageLoop::Run() () from /lib64/libQt5WebEngineCore.so.5
#6  0x00007f7e26dee9fa in base::Thread::ThreadMain() () from /lib64/libQt5WebEngineCore.so.5
#7  0x00007f7e26deafdc in base::(anonymous namespace)::ThreadFunc(void*) () from /lib64/libQt5WebEngineCore.so.5
#8  0x00007f7e228c56ca in start_thread (arg=0x7f7dd77fe700) at pthread_create.c:333
#9  0x00007f7e2aa7bf6f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 13 (Thread 0x7f7dd7fff700 (LWP 3051)):
#0  __lll_lock_wait_private () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:95
#1  0x00007f7e2aa8bac4 in ___fprintf_chk (fp=0x7f7e2ad36730 <_IO_stdfile_2_lock>, flag=flag@entry=1, format=format@entry=0x7f7e1c444c74 "[%s] %s\n") at fprintf_chk.c:30
#2  0x00007f7e1c42c86e in fprintf (__fmt=0x7f7e1c444c74 "[%s] %s\n", __stream=<optimized out>) at /usr/include/bits/stdio2.h:97
#3  event_log (msg=0x7f7dd7ffe1c0 "epoll_wait: Bad file descriptor", severity=2) at log.c:222
#4  _warn_helper (severity=severity@entry=2, errstr=0x7f7e2aafdc0e "Bad file descriptor", fmt=fmt@entry=0x7f7e1c44545a "epoll_wait", ap=ap@entry=0x7f7dd7ffe5f0) at log.c:187
#5  0x00007f7e1c42ca64 in event_warn (fmt=fmt@entry=0x7f7e1c44545a "epoll_wait") at log.c:101
#6  0x00007f7e1c4311e8 in epoll_dispatch (base=0x7f7dcc001950, tv=<optimized out>) at epoll.c:413
#7  0x00007f7e1c41b18a in event_base_loop (base=0x7f7dcc001950, flags=2) at event.c:1625
#8  0x00007f7e26d9b97e in base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () from /lib64/libQt5WebEngineCore.so.5
#9  0x00007f7e26dd684a in base::RunLoop::Run() () from /lib64/libQt5WebEngineCore.so.5
#10 0x00007f7e26dc12e5 in base::MessageLoop::Run() () from /lib64/libQt5WebEngineCore.so.5
#11 0x00007f7e260cffa8 in content::BrowserThreadImpl::IOThreadRun(base::MessageLoop*) () from /lib64/libQt5WebEngineCore.so.5
#12 0x00007f7e260d00eb in content::BrowserThreadImpl::Run(base::MessageLoop*) () from /lib64/libQt5WebEngineCore.so.5
#13 0x00007f7e26deea78 in base::Thread::ThreadMain() () from /lib64/libQt5WebEngineCore.so.5
#14 0x00007f7e26deafdc in base::(anonymous namespace)::ThreadFunc(void*) () from /lib64/libQt5WebEngineCore.so.5
#15 0x00007f7e228c56ca in start_thread (arg=0x7f7dd7fff700) at pthread_create.c:333
#16 0x00007f7e2aa7bf6f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 12 (Thread 0x7f7de8ff9700 (LWP 3050)):
#0  __lll_lock_wait_private () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:95
#1  0x00007f7e2aa8bac4 in ___fprintf_chk (fp=0x7f7e2ad36730 <_IO_stdfile_2_lock>, flag=flag@entry=1, format=format@entry=0x7f7e1c444c74 "[%s] %s\n") at fprintf_chk.c:30
#2  0x00007f7e1c42c86e in fprintf (__fmt=0x7f7e1c444c74 "[%s] %s\n", __stream=<optimized out>) at /usr/include/bits/stdio2.h:97
#3  event_log (msg=0x7f7de8ff81c0 "epoll_wait: Bad file descriptor", severity=2) at log.c:222
#4  _warn_helper (severity=severity@entry=2, errstr=0x7f7e2aafdc0e "Bad file descriptor", fmt=fmt@entry=0x7f7e1c44545a "epoll_wait", ap=ap@entry=0x7f7de8ff85f0) at log.c:187
#5  0x00007f7e1c42ca64 in event_warn (fmt=fmt@entry=0x7f7e1c44545a "epoll_wait") at log.c:101
#6  0x00007f7e1c4311e8 in epoll_dispatch (base=0x7f7db80019e0, tv=<optimized out>) at epoll.c:413
#7  0x00007f7e1c41b18a in event_base_loop (base=0x7f7db80019e0, flags=1) at event.c:1625
#8  0x00007f7e26d9bac5 in base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () from /lib64/libQt5WebEngineCore.so.5
#9  0x00007f7e26dd684a in base::RunLoop::Run() () from /lib64/libQt5WebEngineCore.so.5
#10 0x00007f7e26dc12e5 in base::MessageLoop::Run() () from /lib64/libQt5WebEngineCore.so.5
#11 0x00007f7e260cfef8 in content::BrowserThreadImpl::CacheThreadRun(base::MessageLoop*) () from /lib64/libQt5WebEngineCore.so.5
#12 0x00007f7e260d014b in content::BrowserThreadImpl::Run(base::MessageLoop*) () from /lib64/libQt5WebEngineCore.so.5
#13 0x00007f7e26deea78 in base::Thread::ThreadMain() () from /lib64/libQt5WebEngineCore.so.5
#14 0x00007f7e26deafdc in base::(anonymous namespace)::ThreadFunc(void*) () from /lib64/libQt5WebEngineCore.so.5
#15 0x00007f7e228c56ca in start_thread (arg=0x7f7de8ff9700) at pthread_create.c:333
#16 0x00007f7e2aa7bf6f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 11 (Thread 0x7f7de97fa700 (LWP 3049)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f7e26de3125 in base::WaitableEvent::TimedWait(base::TimeDelta const&) () from /lib64/libQt5WebEngineCore.so.5
#2  0x00007f7e26de31e5 in base::WaitableEvent::Wait() () from /lib64/libQt5WebEngineCore.so.5
#3  0x00007f7e26dc4e13 in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () from /lib64/libQt5WebEngineCore.so.5
#4  0x00007f7e26dd684a in base::RunLoop::Run() () from /lib64/libQt5WebEngineCore.so.5
#5  0x00007f7e26dc12e5 in base::MessageLoop::Run() () from /lib64/libQt5WebEngineCore.so.5
#6  0x00007f7e260cfe48 in content::BrowserThreadImpl::ProcessLauncherThreadRun(base::MessageLoop*) () from /lib64/libQt5WebEngineCore.so.5
#7  0x00007f7e260d013b in content::BrowserThreadImpl::Run(base::MessageLoop*) () from /lib64/libQt5WebEngineCore.so.5
#8  0x00007f7e26deea78 in base::Thread::ThreadMain() () from /lib64/libQt5WebEngineCore.so.5
#9  0x00007f7e26deafdc in base::(anonymous namespace)::ThreadFunc(void*) () from /lib64/libQt5WebEngineCore.so.5
#10 0x00007f7e228c56ca in start_thread (arg=0x7f7de97fa700) at pthread_create.c:333
#11 0x00007f7e2aa7bf6f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 10 (Thread 0x7f7de9ffb700 (LWP 3048)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f7e26de3125 in base::WaitableEvent::TimedWait(base::TimeDelta const&) () from /lib64/libQt5WebEngineCore.so.5
#2  0x00007f7e26de31e5 in base::WaitableEvent::Wait() () from /lib64/libQt5WebEngineCore.so.5
#3  0x00007f7e26dc4e13 in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () from /lib64/libQt5WebEngineCore.so.5
#4  0x00007f7e26dd684a in base::RunLoop::Run() () from /lib64/libQt5WebEngineCore.so.5
#5  0x00007f7e26dc12e5 in base::MessageLoop::Run() () from /lib64/libQt5WebEngineCore.so.5
#6  0x00007f7e260cfd98 in content::BrowserThreadImpl::FileUserBlockingThreadRun(base::MessageLoop*) () from /lib64/libQt5WebEngineCore.so.5
#7  0x00007f7e260d012b in content::BrowserThreadImpl::Run(base::MessageLoop*) () from /lib64/libQt5WebEngineCore.so.5
#8  0x00007f7e26deea78 in base::Thread::ThreadMain() () from /lib64/libQt5WebEngineCore.so.5
#9  0x00007f7e26deafdc in base::(anonymous namespace)::ThreadFunc(void*) () from /lib64/libQt5WebEngineCore.so.5
#10 0x00007f7e228c56ca in start_thread (arg=0x7f7de9ffb700) at pthread_create.c:333
#11 0x00007f7e2aa7bf6f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 9 (Thread 0x7f7dea7fc700 (LWP 3047)):
#0  0x00007f7e2aa6bc3d in write () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f7e2a9eeab7 in _IO_new_file_write (f=0x7f7e2ad35500 <_IO_2_1_stderr_>, data=0x7f7dea7f8b40, n=39) at fileops.c:1271
#2  0x00007f7e2a9ef3c8 in new_do_write (to_do=<optimized out>, data=0x7f7dea7f8b40 "[warn] epoll_wait: Bad file descriptor\n", fp=0x7f7e2ad35500 <_IO_2_1_stderr_>) at fileops.c:526
#3  _IO_new_file_xsputn (f=0x7f7e2ad35500 <_IO_2_1_stderr_>, data=<optimized out>, n=39) at fileops.c:1350
#4  0x00007f7e2a9c4a65 in buffered_vfprintf (s=0x7f7e2ad35500 <_IO_2_1_stderr_>, format=<optimized out>, args=<optimized out>) at vfprintf.c:2346
#5  0x00007f7e2a9c1c15 in _IO_vfprintf_internal (s=s@entry=0x7f7e2ad35500 <_IO_2_1_stderr_>, format=format@entry=0x7f7e1c444c74 "[%s] %s\n", ap=ap@entry=0x7f7dea7fb0d8) at vfprintf.c:1293
#6  0x00007f7e2aa8bb19 in ___fprintf_chk (fp=0x7f7e2ad35500 <_IO_2_1_stderr_>, flag=flag@entry=1, format=format@entry=0x7f7e1c444c74 "[%s] %s\n") at fprintf_chk.c:35
#7  0x00007f7e1c42c86e in fprintf (__fmt=0x7f7e1c444c74 "[%s] %s\n", __stream=<optimized out>) at /usr/include/bits/stdio2.h:97
#8  event_log (msg=0x7f7dea7fb1c0 "epoll_wait: Bad file descriptor", severity=2) at log.c:222
#9  _warn_helper (severity=severity@entry=2, errstr=0x7f7e2aafdc0e "Bad file descriptor", fmt=fmt@entry=0x7f7e1c44545a "epoll_wait", ap=ap@entry=0x7f7dea7fb5f0) at log.c:187
#10 0x00007f7e1c42ca64 in event_warn (fmt=fmt@entry=0x7f7e1c44545a "epoll_wait") at log.c:101
#11 0x00007f7e1c4311e8 in epoll_dispatch (base=0x7f7dc40019e0, tv=<optimized out>) at epoll.c:413
#12 0x00007f7e1c41b18a in event_base_loop (base=0x7f7dc40019e0, flags=1) at event.c:1625
#13 0x00007f7e26d9ba12 in base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () from /lib64/libQt5WebEngineCore.so.5
#14 0x00007f7e26dd684a in base::RunLoop::Run() () from /lib64/libQt5WebEngineCore.so.5
#15 0x00007f7e26dc12e5 in base::MessageLoop::Run() () from /lib64/libQt5WebEngineCore.so.5
#16 0x00007f7e260cfce8 in content::BrowserThreadImpl::FileThreadRun(base::MessageLoop*) () from /lib64/libQt5WebEngineCore.so.5
#17 0x00007f7e260d011b in content::BrowserThreadImpl::Run(base::MessageLoop*) () from /lib64/libQt5WebEngineCore.so.5
#18 0x00007f7e26deea78 in base::Thread::ThreadMain() () from /lib64/libQt5WebEngineCore.so.5
#19 0x00007f7e26deafdc in base::(anonymous namespace)::ThreadFunc(void*) () from /lib64/libQt5WebEngineCore.so.5
#20 0x00007f7e228c56ca in start_thread (arg=0x7f7dea7fc700) at pthread_create.c:333
#21 0x00007f7e2aa7bf6f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 8 (Thread 0x7f7deaffd700 (LWP 3046)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f7e26de3125 in base::WaitableEvent::TimedWait(base::TimeDelta const&) () from /lib64/libQt5WebEngineCore.so.5
#2  0x00007f7e26de31e5 in base::WaitableEvent::Wait() () from /lib64/libQt5WebEngineCore.so.5
#3  0x00007f7e26dc4e13 in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () from /lib64/libQt5WebEngineCore.so.5
#4  0x00007f7e26dd684a in base::RunLoop::Run() () from /lib64/libQt5WebEngineCore.so.5
#5  0x00007f7e26dc12e5 in base::MessageLoop::Run() () from /lib64/libQt5WebEngineCore.so.5
#6  0x00007f7e260cfc38 in content::BrowserThreadImpl::DBThreadRun(base::MessageLoop*) () from /lib64/libQt5WebEngineCore.so.5
#7  0x00007f7e260d010b in content::BrowserThreadImpl::Run(base::MessageLoop*) () from /lib64/libQt5WebEngineCore.so.5
#8  0x00007f7e26deea78 in base::Thread::ThreadMain() () from /lib64/libQt5WebEngineCore.so.5
#9  0x00007f7e26deafdc in base::(anonymous namespace)::ThreadFunc(void*) () from /lib64/libQt5WebEngineCore.so.5
#10 0x00007f7e228c56ca in start_thread (arg=0x7f7deaffd700) at pthread_create.c:333
#11 0x00007f7e2aa7bf6f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 7 (Thread 0x7f7deb7fe700 (LWP 3045)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00007f7e26de2912 in base::ConditionVariable::TimedWait(base::TimeDelta const&) () from /lib64/libQt5WebEngineCore.so.5
#2  0x00007f7e26df14f0 in base::PosixDynamicThreadPool::WaitForTask() () from /lib64/libQt5WebEngineCore.so.5
#3  0x00007f7e26df1a23 in base::(anonymous namespace)::WorkerThread::ThreadMain() () from /lib64/libQt5WebEngineCore.so.5
#4  0x00007f7e26deafdc in base::(anonymous namespace)::ThreadFunc(void*) () from /lib64/libQt5WebEngineCore.so.5
#5  0x00007f7e228c56ca in start_thread (arg=0x7f7deb7fe700) at pthread_create.c:333
#6  0x00007f7e2aa7bf6f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 6 (Thread 0x7f7debfff700 (LWP 3044)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00007f7e26de2912 in base::ConditionVariable::TimedWait(base::TimeDelta const&) () from /lib64/libQt5WebEngineCore.so.5
#2  0x00007f7e26df14f0 in base::PosixDynamicThreadPool::WaitForTask() () from /lib64/libQt5WebEngineCore.so.5
#3  0x00007f7e26df1a23 in base::(anonymous namespace)::WorkerThread::ThreadMain() () from /lib64/libQt5WebEngineCore.so.5
#4  0x00007f7e26deafdc in base::(anonymous namespace)::ThreadFunc(void*) () from /lib64/libQt5WebEngineCore.so.5
#5  0x00007f7e228c56ca in start_thread (arg=0x7f7debfff700) at pthread_create.c:333
#6  0x00007f7e2aa7bf6f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 5 (Thread 0x7f7df8899700 (LWP 3043)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f7e26de3125 in base::WaitableEvent::TimedWait(base::TimeDelta const&) () from /lib64/libQt5WebEngineCore.so.5
#2  0x00007f7e26de31e5 in base::WaitableEvent::Wait() () from /lib64/libQt5WebEngineCore.so.5
#3  0x00007f7e26dc4e13 in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () from /lib64/libQt5WebEngineCore.so.5
#4  0x00007f7e26dd684a in base::RunLoop::Run() () from /lib64/libQt5WebEngineCore.so.5
#5  0x00007f7e26dc12e5 in base::MessageLoop::Run() () from /lib64/libQt5WebEngineCore.so.5
#6  0x00007f7e26dee9fa in base::Thread::ThreadMain() () from /lib64/libQt5WebEngineCore.so.5
#7  0x00007f7e26deafdc in base::(anonymous namespace)::ThreadFunc(void*) () from /lib64/libQt5WebEngineCore.so.5
#8  0x00007f7e228c56ca in start_thread (arg=0x7f7df8899700) at pthread_create.c:333
#9  0x00007f7e2aa7bf6f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 4 (Thread 0x7f7df909a700 (LWP 3042)):
#0  __lll_lock_wait_private () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:95
#1  0x00007f7e2aa8bac4 in ___fprintf_chk (fp=0x7f7e2ad36730 <_IO_stdfile_2_lock>, flag=flag@entry=1, format=format@entry=0x7f7e1c444c74 "[%s] %s\n") at fprintf_chk.c:30
#2  0x00007f7e1c42c86e in fprintf (__fmt=0x7f7e1c444c74 "[%s] %s\n", __stream=<optimized out>) at /usr/include/bits/stdio2.h:97
#3  event_log (msg=0x7f7df9099550 "epoll_wait: Bad file descriptor", severity=2) at log.c:222
#4  _warn_helper (severity=severity@entry=2, errstr=0x7f7e2aafdc0e "Bad file descriptor", fmt=fmt@entry=0x7f7e1c44545a "epoll_wait", ap=ap@entry=0x7f7df9099980) at log.c:187
#5  0x00007f7e1c42ca64 in event_warn (fmt=fmt@entry=0x7f7e1c44545a "epoll_wait") at log.c:101
#6  0x00007f7e1c4311e8 in epoll_dispatch (base=0x7f7de40019e0, tv=<optimized out>) at epoll.c:413
#7  0x00007f7e1c41b18a in event_base_loop (base=0x7f7de40019e0, flags=1) at event.c:1625
#8  0x00007f7e26d9ba12 in base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () from /lib64/libQt5WebEngineCore.so.5
#9  0x00007f7e26dd684a in base::RunLoop::Run() () from /lib64/libQt5WebEngineCore.so.5
#10 0x00007f7e26dc12e5 in base::MessageLoop::Run() () from /lib64/libQt5WebEngineCore.so.5
#11 0x00007f7e26dee9fa in base::Thread::ThreadMain() () from /lib64/libQt5WebEngineCore.so.5
#12 0x00007f7e26deafdc in base::(anonymous namespace)::ThreadFunc(void*) () from /lib64/libQt5WebEngineCore.so.5
#13 0x00007f7e228c56ca in start_thread (arg=0x7f7df909a700) at pthread_create.c:333
#14 0x00007f7e2aa7bf6f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 3 (Thread 0x7f7dfb9e9700 (LWP 3035)):
#0  0x00007f7e2b680d89 in QMutex::unlock() () from /lib64/libQt5Core.so.5
#1  0x00007f7e2b876611 in postEventSourcePrepare(_GSource*, int*) () from /lib64/libQt5Core.so.5
#2  0x00007f7e1de40699 in g_main_context_prepare () from /lib64/libglib-2.0.so.0
#3  0x00007f7e1de4107b in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#4  0x00007f7e1de4126c in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#5  0x00007f7e2b87673b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#6  0x00007f7e2b82773a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#7  0x00007f7e2b6845f3 in QThread::exec() () from /lib64/libQt5Core.so.5
#8  0x00007f7e30696739 in QDBusConnectionManager::run() () from /lib64/libQt5DBus.so.5
#9  0x00007f7e2b6889da in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#10 0x00007f7e228c56ca in start_thread (arg=0x7f7dfb9e9700) at pthread_create.c:333
#11 0x00007f7e2aa7bf6f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 2 (Thread 0x7f7e080b9700 (LWP 3034)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f7e21331f87 in _xcb_conn_wait (c=c@entry=0x55a89160b730, cond=cond@entry=0x55a89160b770, vector=vector@entry=0x0, count=count@entry=0x0) at xcb_conn.c:447
#2  0x00007f7e21333aa9 in xcb_wait_for_event (c=0x55a89160b730) at xcb_in.c:693
#3  0x00007f7e0c129d69 in QXcbEventReader::run() () from /lib64/libQt5XcbQpa.so.5
#4  0x00007f7e2b6889da in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#5  0x00007f7e228c56ca in start_thread (arg=0x7f7e080b9700) at pthread_create.c:333
#6  0x00007f7e2aa7bf6f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 1 (Thread 0x7f7e12daf940 (LWP 3032)):
#0  0x00007f7e2aa7000d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f7e21331d10 in poll (__timeout=-1, __nfds=1, __fds=0x7ffdaffb4830) at /usr/include/bits/poll2.h:46
#2  _xcb_conn_wait (c=c@entry=0x55a89160b730, cond=cond@entry=0x7ffdaffb4950, vector=vector@entry=0x0, count=count@entry=0x0) at xcb_conn.c:479
#3  0x00007f7e213337cf in wait_for_reply (c=c@entry=0x55a89160b730, request=request@entry=2350, e=e@entry=0x7ffdaffb4a20) at xcb_in.c:516
#4  0x00007f7e21333941 in xcb_wait_for_reply64 (c=c@entry=0x55a89160b730, request=2350, e=e@entry=0x7ffdaffb4a20) at xcb_in.c:560
#5  0x00007f7e24416bd8 in _XReply (dpy=dpy@entry=0x55a89160a370, rep=rep@entry=0x7ffdaffb4a70, extra=extra@entry=0, discard=discard@entry=1) at xcb_io.c:596
#6  0x00007f7e244126dd in XSync (dpy=0x55a89160a370, discard=0) at Sync.c:44
#7  0x00007f7e20ef6f20 in dri2SwapBuffers () from /lib64/libGL.so.1
#8  0x00007f7e307646bd in QGLXContext::swapBuffers(QPlatformSurface*) () from /usr/lib64/qt5/plugins/xcbglintegrations/libqxcb-glx-integration.so
#9  0x00007f7e2bb9633d in QOpenGLContext::swapBuffers(QSurface*) () from /lib64/libQt5Gui.so.5
#10 0x00007f7e2bd9ee68 in QPlatformBackingStore::composeAndFlush(QWindow*, QRegion const&, QPoint const&, QPlatformTextureList*, QOpenGLContext*, bool) () from /lib64/libQt5Gui.so.5
#11 0x00007f7e0c149d07 in QXcbBackingStore::composeAndFlush(QWindow*, QRegion const&, QPoint const&, QPlatformTextureList*, QOpenGLContext*, bool) () from /lib64/libQt5XcbQpa.so.5
#12 0x00007f7e2c075dad in QWidgetBackingStore::qt_flush(QWidget*, QRegion const&, QBackingStore*, QWidget*, QPoint const&, QPlatformTextureList*, QWidgetBackingStore*) () from /lib64/libQt5Widgets.so.5
#13 0x00007f7e2c079aa2 in QWidgetBackingStore::sync(QWidget*, QRegion const&) () from /lib64/libQt5Widgets.so.5
#14 0x00007f7e2c0ccf11 in QWidgetWindow::handleExposeEvent(QExposeEvent*) () from /lib64/libQt5Widgets.so.5
#15 0x00007f7e2c0cd993 in QWidgetWindow::event(QEvent*) () from /lib64/libQt5Widgets.so.5
#16 0x00007f7e2c068ecc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib64/libQt5Widgets.so.5
#17 0x00007f7e2c070671 in QApplication::notify(QObject*, QEvent*) () from /lib64/libQt5Widgets.so.5
#18 0x00007f7e2b8287aa in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /lib64/libQt5Core.so.5
#19 0x00007f7e2bb601cd in QGuiApplicationPrivate::processExposeEvent(QWindowSystemInterfacePrivate::ExposeEvent*) () from /lib64/libQt5Gui.so.5
#20 0x00007f7e2bb60dfd in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () from /lib64/libQt5Gui.so.5
#21 0x00007f7e2bb41c4b in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Gui.so.5
#22 0x00007f7e0c160750 in userEventSourceDispatch(_GSource*, int (*)(void*), void*) () from /lib64/libQt5XcbQpa.so.5
#23 0x00007f7e1de40e42 in g_main_context_dispatch () from /lib64/libglib-2.0.so.0
#24 0x00007f7e1de411c0 in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#25 0x00007f7e1de4126c in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#26 0x00007f7e2b87671f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#27 0x00007f7e2b82773a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#28 0x00007f7e2b82f23c in QCoreApplication::exec() () from /lib64/libQt5Core.so.5
#29 0x000055a89139c46f in main ()

Possible duplicates by query: bug 369204, bug 369162.

Reported using DrKonqi
Comment 1 Christoph Feck 2016-12-20 18:27:19 UTC 
Crash is in the nouveau driver.

*** This bug has been marked as a duplicate of bug 368371 ***