Bug 380903

Summary: KMail crashes when selecting an email
Product: [Applications] kmail2 Reporter: John M. Harris, Jr. <johnmh>
Component: generalAssignee: kdepim bugs <kdepim-bugs>
Status: RESOLVED NOT A BUG    
Severity: crash Keywords: drkonqi
Priority: NOR    
Version: 5.4.3   
Target Milestone: ---   
Platform: Fedora RPMs   
OS: Linux   
Latest Commit: Version Fixed In:
Sentry Crash Report:

Description John M. Harris, Jr. 2017-06-06 17:51:33 UTC 
Application: kmail (5.4.3)

Qt Version: 5.7.1
Frameworks Version: 5.34.0
Operating System: Linux 4.11.3-200.fc25.x86_64 x86_64
Distribution: "Fedora release 25 (Twenty Five)"

-- Information about the crash:
- What I was doing when the application crashed:
Selecting an email in my Inbox, however it seems the crash can also occur when changing folders, changing accounts or when writing a message.

The crash can be reproduced sometimes.

-- Backtrace:
Application: KMail (kmail), signal: Aborted
Using host libthread_db library "/lib64/libthread_db.so.1".
84	T_PSEUDO (SYSCALL_SYMBOL, SYSCALL_NAME, SYSCALL_NARGS)
[Current thread is 1 (Thread 0x7f9204aeb940 (LWP 22382))]

Thread 25 (Thread 0x7f90e187c700 (LWP 22447)):
#0  0x00007f9225d8e460 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f921fb53e89 in base::SequencedWorkerPool::Inner::ThreadLoop(base::SequencedWorkerPool::Worker*) () at /lib64/libQt5WebEngineCore.so.5
#2  0x00007f921fb544d9 in base::SequencedWorkerPool::Worker::Run() () at /lib64/libQt5WebEngineCore.so.5
#3  0x00007f921fb54690 in base::SimpleThread::ThreadMain() () at /lib64/libQt5WebEngineCore.so.5
#4  0x00007f921fb513d2 in base::(anonymous namespace)::ThreadFunc(void*) () at /lib64/libQt5WebEngineCore.so.5
#5  0x00007f9225d886ca in start_thread (arg=0x7f90e187c700) at pthread_create.c:333
#6  0x00007f9229797f7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 24 (Thread 0x7f916ccbc700 (LWP 22441)):
#0  0x00007f9225d8e460 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f920cc552f4 in QTWTF::TCMalloc_PageHeap::scavengerThread() (this=0x7f920cd41380 <QTWTF::pageheap_memory>) at /usr/src/debug/qtscript-opensource-src-5.7.1/src/3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2359
#2  0x00007f920cc55339 in QTWTF::TCMalloc_PageHeap::runScavengerThread(void*) (context=<optimized out>) at /usr/src/debug/qtscript-opensource-src-5.7.1/src/3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1464
#3  0x00007f9225d886ca in start_thread (arg=0x7f916ccbc700) at pthread_create.c:333
#4  0x00007f9229797f7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 23 (Thread 0x7f916de91700 (LWP 22438)):
#0  0x00007f921522d087 in g_thread_self () at gthread.c:981
#1  0x00007f921520406e in g_main_context_acquire (context=context@entry=0x7f9164000ad0) at gmain.c:3259
#2  0x00007f9215205015 in g_main_context_iterate (context=context@entry=0x7f9164000ad0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3879
#3  0x00007f921520527c in g_main_context_iteration (context=0x7f9164000ad0, may_block=1) at gmain.c:3990
#4  0x00007f922a5926eb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f922a54368a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#6  0x00007f922a3a05e3 in QThread::exec() () at /lib64/libQt5Core.so.5
#7  0x00007f922a3a49ca in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#8  0x00007f9225d886ca in start_thread (arg=0x7f916de91700) at pthread_create.c:333
#9  0x00007f9229797f7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 22 (Thread 0x7f9196ffd700 (LWP 22424)):
#0  0x00007f9225d8e460 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f921fb53e89 in base::SequencedWorkerPool::Inner::ThreadLoop(base::SequencedWorkerPool::Worker*) () at /lib64/libQt5WebEngineCore.so.5
#2  0x00007f921fb544d9 in base::SequencedWorkerPool::Worker::Run() () at /lib64/libQt5WebEngineCore.so.5
#3  0x00007f921fb54690 in base::SimpleThread::ThreadMain() () at /lib64/libQt5WebEngineCore.so.5
#4  0x00007f921fb513d2 in base::(anonymous namespace)::ThreadFunc(void*) () at /lib64/libQt5WebEngineCore.so.5
#5  0x00007f9225d886ca in start_thread (arg=0x7f9196ffd700) at pthread_create.c:333
#6  0x00007f9229797f7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 21 (Thread 0x7f91977fe700 (LWP 22423)):
#0  0x00007f9229787bed in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f9206552101 in read (__nbytes=10, __buf=0x7f91977fdab0, __fd=56) at /usr/include/bits/unistd.h:44
#2  0x00007f9206552101 in pa_read (fd=56, buf=buf@entry=0x7f91977fdab0, count=count@entry=10, type=type@entry=0x55b81114e1f8) at pulsecore/core-util.c:434
#3  0x00007f9208a020be in clear_wakeup (m=<optimized out>) at pulse/mainloop.c:781
#4  0x00007f9208a020be in pa_mainloop_prepare (m=m@entry=0x55b81114e120, timeout=-1) at pulse/mainloop.c:789
#5  0x00007f9208a02b30 in pa_mainloop_iterate (m=0x55b81114e120, block=<optimized out>, retval=0x0) at pulse/mainloop.c:923
#6  0x00007f9208a02bf0 in pa_mainloop_run (m=0x55b81114e120, retval=retval@entry=0x0) at pulse/mainloop.c:944
#7  0x00007f9208a10bd9 in thread (userdata=0x55b81112e4d0) at pulse/thread-mainloop.c:100
#8  0x00007f92065811d8 in internal_thread_func (userdata=0x55b81114e260) at pulsecore/thread-posix.c:81
#9  0x00007f9225d886ca in start_thread (arg=0x7f91977fe700) at pthread_create.c:333
#10 0x00007f9229797f7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 20 (Thread 0x7f9197fff700 (LWP 22422)):
#0  0x00007f9225d8e809 in pthread_cond_timedwait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00007f921fb4a422 in base::ConditionVariable::TimedWait(base::TimeDelta const&) () at /lib64/libQt5WebEngineCore.so.5
#2  0x00007f921fb4acc5 in base::WaitableEvent::TimedWait(base::TimeDelta const&) () at /lib64/libQt5WebEngineCore.so.5
#3  0x00007f921fb2c631 in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () at /lib64/libQt5WebEngineCore.so.5
#4  0x00007f921fb3ee8a in base::RunLoop::Run() () at /lib64/libQt5WebEngineCore.so.5
#5  0x00007f921fb549a5 in base::Thread::Run(base::MessageLoop*) () at /lib64/libQt5WebEngineCore.so.5
#6  0x00007f921fb54c64 in base::Thread::ThreadMain() () at /lib64/libQt5WebEngineCore.so.5
#7  0x00007f921fb513d2 in base::(anonymous namespace)::ThreadFunc(void*) () at /lib64/libQt5WebEngineCore.so.5
#8  0x00007f9225d886ca in start_thread (arg=0x7f9197fff700) at pthread_create.c:333
#9  0x00007f9229797f7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 19 (Thread 0x7f91b8ff9700 (LWP 22421)):
#0  0x00007f92296dda24 in _IO_vfprintf_internal (s=s@entry=0x7f91b8ff83c0, format=format@entry=0x7f9210c1f45a "epoll_wait", ap=ap@entry=0x7f91b8ff8980) at vfprintf.c:1275
#1  0x00007f92297a78a6 in ___vsnprintf_chk (s=0x7f91b8ff8550 "", maxlen=<optimized out>, flags=1, slen=<optimized out>, format=0x7f9210c1f45a "epoll_wait", args=0x7f91b8ff8980) at vsnprintf_chk.c:63
#2  0x00007f9210c07be3 in evutil_vsnprintf () at /lib64/libevent-2.0.so.5
#3  0x00007f9210c0677c in _warn_helper () at /lib64/libevent-2.0.so.5
#4  0x00007f9210c06a64 in event_warn () at /lib64/libevent-2.0.so.5
#5  0x00007f9210c0b1e8 in epoll_dispatch () at /lib64/libevent-2.0.so.5
#6  0x00007f9210bf518a in event_base_loop () at /lib64/libevent-2.0.so.5
#7  0x00007f921fb08192 in base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () at /lib64/libQt5WebEngineCore.so.5
#8  0x00007f921fb3ee8a in base::RunLoop::Run() () at /lib64/libQt5WebEngineCore.so.5
#9  0x00007f921fb549a5 in base::Thread::Run(base::MessageLoop*) () at /lib64/libQt5WebEngineCore.so.5
#10 0x00007f921fb54c64 in base::Thread::ThreadMain() () at /lib64/libQt5WebEngineCore.so.5
#11 0x00007f921fb513d2 in base::(anonymous namespace)::ThreadFunc(void*) () at /lib64/libQt5WebEngineCore.so.5
#12 0x00007f9225d886ca in start_thread (arg=0x7f91b8ff9700) at pthread_create.c:333
#13 0x00007f9229797f7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 18 (Thread 0x7f91b97fa700 (LWP 22420)):
#0  0x00007f9225d8e460 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f921fb4ac35 in base::WaitableEvent::TimedWait(base::TimeDelta const&) () at /lib64/libQt5WebEngineCore.so.5
#2  0x00007f921fb4ace4 in base::WaitableEvent::Wait() () at /lib64/libQt5WebEngineCore.so.5
#3  0x00007f921fb2c5f3 in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () at /lib64/libQt5WebEngineCore.so.5
#4  0x00007f921fb3ee8a in base::RunLoop::Run() () at /lib64/libQt5WebEngineCore.so.5
#5  0x00007f921fb549a5 in base::Thread::Run(base::MessageLoop*) () at /lib64/libQt5WebEngineCore.so.5
#6  0x00007f921fb54c64 in base::Thread::ThreadMain() () at /lib64/libQt5WebEngineCore.so.5
#7  0x00007f921fb513d2 in base::(anonymous namespace)::ThreadFunc(void*) () at /lib64/libQt5WebEngineCore.so.5
#8  0x00007f9225d886ca in start_thread (arg=0x7f91b97fa700) at pthread_create.c:333
#9  0x00007f9229797f7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 17 (Thread 0x7f91b9ffb700 (LWP 22419)):
#0  0x00007f9225d8e460 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f92219ad6cd in cc::SingleThreadTaskGraphRunner::Run() () at /lib64/libQt5WebEngineCore.so.5
#2  0x00007f921fb5456e in base::DelegateSimpleThread::Run() () at /lib64/libQt5WebEngineCore.so.5
#3  0x00007f921fb54690 in base::SimpleThread::ThreadMain() () at /lib64/libQt5WebEngineCore.so.5
#4  0x00007f921fb513d2 in base::(anonymous namespace)::ThreadFunc(void*) () at /lib64/libQt5WebEngineCore.so.5
#5  0x00007f9225d886ca in start_thread (arg=0x7f91b9ffb700) at pthread_create.c:333
#6  0x00007f9229797f7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 16 (Thread 0x7f91ba7fc700 (LWP 22418)):
#0  0x00007f9225d8e460 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f921fb4ac35 in base::WaitableEvent::TimedWait(base::TimeDelta const&) () at /lib64/libQt5WebEngineCore.so.5
#2  0x00007f921fb4ace4 in base::WaitableEvent::Wait() () at /lib64/libQt5WebEngineCore.so.5
#3  0x00007f921fb2c5f3 in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () at /lib64/libQt5WebEngineCore.so.5
#4  0x00007f921fb3ee8a in base::RunLoop::Run() () at /lib64/libQt5WebEngineCore.so.5
#5  0x00007f921fb549a5 in base::Thread::Run(base::MessageLoop*) () at /lib64/libQt5WebEngineCore.so.5
#6  0x00007f921fb54c64 in base::Thread::ThreadMain() () at /lib64/libQt5WebEngineCore.so.5
#7  0x00007f921fb513d2 in base::(anonymous namespace)::ThreadFunc(void*) () at /lib64/libQt5WebEngineCore.so.5
#8  0x00007f9225d886ca in start_thread (arg=0x7f91ba7fc700) at pthread_create.c:333
#9  0x00007f9229797f7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 15 (Thread 0x7f91baffd700 (LWP 22417)):
#0  0x00007f92297a5f5c in __lll_lock_wait_private () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:95
#1  0x00007f92297a7b64 in ___fprintf_chk (fp=0x7f9229a52730 <_IO_stdfile_2_lock>, flag=1, format=0x7f9210c1ec74 "[%s] %s\n") at fprintf_chk.c:30
#2  0x00007f9210c0686e in _warn_helper () at /lib64/libevent-2.0.so.5
#3  0x00007f9210c06a64 in event_warn () at /lib64/libevent-2.0.so.5
#4  0x00007f9210c0b1e8 in epoll_dispatch () at /lib64/libevent-2.0.so.5
#5  0x00007f9210bf518a in event_base_loop () at /lib64/libevent-2.0.so.5
#6  0x00007f921fb080fe in base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () at /lib64/libQt5WebEngineCore.so.5
#7  0x00007f921fb3ee8a in base::RunLoop::Run() () at /lib64/libQt5WebEngineCore.so.5
#8  0x00007f921fb549a5 in base::Thread::Run(base::MessageLoop*) () at /lib64/libQt5WebEngineCore.so.5
#9  0x00007f92200e4288 in content::BrowserThreadImpl::IOThreadRun(base::MessageLoop*) () at /lib64/libQt5WebEngineCore.so.5
#10 0x00007f92200e4bac in content::BrowserThreadImpl::Run(base::MessageLoop*) () at /lib64/libQt5WebEngineCore.so.5
#11 0x00007f921fb54c64 in base::Thread::ThreadMain() () at /lib64/libQt5WebEngineCore.so.5
#12 0x00007f921fb513d2 in base::(anonymous namespace)::ThreadFunc(void*) () at /lib64/libQt5WebEngineCore.so.5
#13 0x00007f9225d886ca in start_thread (arg=0x7f91baffd700) at pthread_create.c:333
#14 0x00007f9229797f7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 14 (Thread 0x7f91bb7fe700 (LWP 22416)):
#0  0x00007f9225d8e460 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f921fb4ac35 in base::WaitableEvent::TimedWait(base::TimeDelta const&) () at /lib64/libQt5WebEngineCore.so.5
#2  0x00007f921fb4ace4 in base::WaitableEvent::Wait() () at /lib64/libQt5WebEngineCore.so.5
#3  0x00007f921fb2c5f3 in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () at /lib64/libQt5WebEngineCore.so.5
#4  0x00007f921fb3ee8a in base::RunLoop::Run() () at /lib64/libQt5WebEngineCore.so.5
#5  0x00007f921fb549a5 in base::Thread::Run(base::MessageLoop*) () at /lib64/libQt5WebEngineCore.so.5
#6  0x00007f92200e41d8 in content::BrowserThreadImpl::CacheThreadRun(base::MessageLoop*) () at /lib64/libQt5WebEngineCore.so.5
#7  0x00007f92200e4b94 in content::BrowserThreadImpl::Run(base::MessageLoop*) () at /lib64/libQt5WebEngineCore.so.5
#8  0x00007f921fb54c64 in base::Thread::ThreadMain() () at /lib64/libQt5WebEngineCore.so.5
#9  0x00007f921fb513d2 in base::(anonymous namespace)::ThreadFunc(void*) () at /lib64/libQt5WebEngineCore.so.5
#10 0x00007f9225d886ca in start_thread (arg=0x7f91bb7fe700) at pthread_create.c:333
#11 0x00007f9229797f7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 13 (Thread 0x7f91bbfff700 (LWP 22415)):
#0  0x00007f9225d8e460 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f921fb4ac35 in base::WaitableEvent::TimedWait(base::TimeDelta const&) () at /lib64/libQt5WebEngineCore.so.5
#2  0x00007f921fb4ace4 in base::WaitableEvent::Wait() () at /lib64/libQt5WebEngineCore.so.5
#3  0x00007f921fb2c5f3 in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () at /lib64/libQt5WebEngineCore.so.5
#4  0x00007f921fb3ee8a in base::RunLoop::Run() () at /lib64/libQt5WebEngineCore.so.5
#5  0x00007f921fb549a5 in base::Thread::Run(base::MessageLoop*) () at /lib64/libQt5WebEngineCore.so.5
#6  0x00007f92200e4128 in content::BrowserThreadImpl::ProcessLauncherThreadRun(base::MessageLoop*) () at /lib64/libQt5WebEngineCore.so.5
#7  0x00007f92200e4b7c in content::BrowserThreadImpl::Run(base::MessageLoop*) () at /lib64/libQt5WebEngineCore.so.5
#8  0x00007f921fb54c64 in base::Thread::ThreadMain() () at /lib64/libQt5WebEngineCore.so.5
#9  0x00007f921fb513d2 in base::(anonymous namespace)::ThreadFunc(void*) () at /lib64/libQt5WebEngineCore.so.5
#10 0x00007f9225d886ca in start_thread (arg=0x7f91bbfff700) at pthread_create.c:333
#11 0x00007f9229797f7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 12 (Thread 0x7f91ccff9700 (LWP 22414)):
#0  0x00007f9225d8e460 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f921fb4ac35 in base::WaitableEvent::TimedWait(base::TimeDelta const&) () at /lib64/libQt5WebEngineCore.so.5
#2  0x00007f921fb4ace4 in base::WaitableEvent::Wait() () at /lib64/libQt5WebEngineCore.so.5
#3  0x00007f921fb2c5f3 in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () at /lib64/libQt5WebEngineCore.so.5
#4  0x00007f921fb3ee8a in base::RunLoop::Run() () at /lib64/libQt5WebEngineCore.so.5
#5  0x00007f921fb549a5 in base::Thread::Run(base::MessageLoop*) () at /lib64/libQt5WebEngineCore.so.5
#6  0x00007f92200e4078 in content::BrowserThreadImpl::FileUserBlockingThreadRun(base::MessageLoop*) () at /lib64/libQt5WebEngineCore.so.5
#7  0x00007f92200e4b6c in content::BrowserThreadImpl::Run(base::MessageLoop*) () at /lib64/libQt5WebEngineCore.so.5
#8  0x00007f921fb54c64 in base::Thread::ThreadMain() () at /lib64/libQt5WebEngineCore.so.5
#9  0x00007f921fb513d2 in base::(anonymous namespace)::ThreadFunc(void*) () at /lib64/libQt5WebEngineCore.so.5
#10 0x00007f9225d886ca in start_thread (arg=0x7f91ccff9700) at pthread_create.c:333
#11 0x00007f9229797f7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 11 (Thread 0x7f91cd7fa700 (LWP 22413)):
#0  0x00007f92296c2c00 in _nl_make_l10nflist (l10nfile_list=l10nfile_list@entry=0x7f9229a51b58 <_nl_loaded_domains>, dirlist=dirlist@entry=0x7f9229820830 <_nl_default_dirname> "/usr/share/locale", dirlist_len=18, mask=mask@entry=0, language=language@entry=0x7f91cd7f9390 "en_US.UTF-8", territory=territory@entry=0x0, codeset=0x0, normalized_codeset=0x0, modifier=0x0, filename=0x7f91cd7f93b0 "LC_MESSAGES/libc.mo", do_allocate=0) at ../intl/l10nflist.c:157
#1  0x00007f92296c08d7 in _nl_find_domain (dirname=dirname@entry=0x7f9229820830 <_nl_default_dirname> "/usr/share/locale", locale=locale@entry=0x7f91cd7f9390 "en_US.UTF-8", domainname=domainname@entry=0x7f91cd7f93b0 "LC_MESSAGES/libc.mo", domainbinding=domainbinding@entry=0x0) at finddomain.c:91
#2  0x00007f92296c00d3 in __dcigettext (domainname=0x7f9229819840 <_libc_intl_domainname> "libc", msgid1=0x7f9229819c6e "Bad file descriptor", msgid2=msgid2@entry=0x0, plural=plural@entry=0, n=n@entry=0, category=category@entry=5) at dcigettext.c:722
#3  0x00007f92296be7ef in __GI___dcgettext (domainname=<optimized out>, msgid=<optimized out>, category=category@entry=5) at dcgettext.c:47
#4  0x00007f922971ce8c in __GI___strerror_r (errnum=errnum@entry=9, buf=buf@entry=0x0, buflen=buflen@entry=0) at _strerror.c:71
#5  0x00007f922971cdbf in strerror (errnum=9) at strerror.c:31
#6  0x00007f9210c06a51 in event_warn () at /lib64/libevent-2.0.so.5
#7  0x00007f9210c0b1e8 in epoll_dispatch () at /lib64/libevent-2.0.so.5
#8  0x00007f9210bf518a in event_base_loop () at /lib64/libevent-2.0.so.5
#9  0x00007f921fb080fe in base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () at /lib64/libQt5WebEngineCore.so.5
#10 0x00007f921fb3ee8a in base::RunLoop::Run() () at /lib64/libQt5WebEngineCore.so.5
#11 0x00007f921fb549a5 in base::Thread::Run(base::MessageLoop*) () at /lib64/libQt5WebEngineCore.so.5
#12 0x00007f92200e3fc8 in content::BrowserThreadImpl::FileThreadRun(base::MessageLoop*) () at /lib64/libQt5WebEngineCore.so.5
#13 0x00007f92200e4b5c in content::BrowserThreadImpl::Run(base::MessageLoop*) () at /lib64/libQt5WebEngineCore.so.5
#14 0x00007f921fb54c64 in base::Thread::ThreadMain() () at /lib64/libQt5WebEngineCore.so.5
#15 0x00007f921fb513d2 in base::(anonymous namespace)::ThreadFunc(void*) () at /lib64/libQt5WebEngineCore.so.5
#16 0x00007f9225d886ca in start_thread (arg=0x7f91cd7fa700) at pthread_create.c:333
#17 0x00007f9229797f7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 10 (Thread 0x7f91cdffb700 (LWP 22412)):
#0  0x00007f9225d8e460 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f921fb4ac35 in base::WaitableEvent::TimedWait(base::TimeDelta const&) () at /lib64/libQt5WebEngineCore.so.5
#2  0x00007f921fb4ace4 in base::WaitableEvent::Wait() () at /lib64/libQt5WebEngineCore.so.5
#3  0x00007f921fb2c5f3 in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () at /lib64/libQt5WebEngineCore.so.5
#4  0x00007f921fb3ee8a in base::RunLoop::Run() () at /lib64/libQt5WebEngineCore.so.5
#5  0x00007f921fb549a5 in base::Thread::Run(base::MessageLoop*) () at /lib64/libQt5WebEngineCore.so.5
#6  0x00007f92200e3f18 in content::BrowserThreadImpl::DBThreadRun(base::MessageLoop*) () at /lib64/libQt5WebEngineCore.so.5
#7  0x00007f92200e4b4c in content::BrowserThreadImpl::Run(base::MessageLoop*) () at /lib64/libQt5WebEngineCore.so.5
#8  0x00007f921fb54c64 in base::Thread::ThreadMain() () at /lib64/libQt5WebEngineCore.so.5
#9  0x00007f921fb513d2 in base::(anonymous namespace)::ThreadFunc(void*) () at /lib64/libQt5WebEngineCore.so.5
#10 0x00007f9225d886ca in start_thread (arg=0x7f91cdffb700) at pthread_create.c:333
#11 0x00007f9229797f7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 9 (Thread 0x7f91ce7fc700 (LWP 22411)):
#0  0x00007f9225d8e809 in pthread_cond_timedwait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00007f921fb4a422 in base::ConditionVariable::TimedWait(base::TimeDelta const&) () at /lib64/libQt5WebEngineCore.so.5
#2  0x00007f921fb57949 in base::PosixDynamicThreadPool::WaitForTask() () at /lib64/libQt5WebEngineCore.so.5
#3  0x00007f921fb57e83 in base::(anonymous namespace)::WorkerThread::ThreadMain() () at /lib64/libQt5WebEngineCore.so.5
#4  0x00007f921fb513d2 in base::(anonymous namespace)::ThreadFunc(void*) () at /lib64/libQt5WebEngineCore.so.5
#5  0x00007f9225d886ca in start_thread (arg=0x7f91ce7fc700) at pthread_create.c:333
#6  0x00007f9229797f7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 8 (Thread 0x7f91ceffd700 (LWP 22410)):
#0  0x00007f9225d8e809 in pthread_cond_timedwait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00007f921fb4a422 in base::ConditionVariable::TimedWait(base::TimeDelta const&) () at /lib64/libQt5WebEngineCore.so.5
#2  0x00007f921fb57949 in base::PosixDynamicThreadPool::WaitForTask() () at /lib64/libQt5WebEngineCore.so.5
#3  0x00007f921fb57e83 in base::(anonymous namespace)::WorkerThread::ThreadMain() () at /lib64/libQt5WebEngineCore.so.5
#4  0x00007f921fb513d2 in base::(anonymous namespace)::ThreadFunc(void*) () at /lib64/libQt5WebEngineCore.so.5
#5  0x00007f9225d886ca in start_thread (arg=0x7f91ceffd700) at pthread_create.c:333
#6  0x00007f9229797f7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 7 (Thread 0x7f91cf7fe700 (LWP 22409)):
#0  0x00007f9225d8e460 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f921fb4ac35 in base::WaitableEvent::TimedWait(base::TimeDelta const&) () at /lib64/libQt5WebEngineCore.so.5
#2  0x00007f921fb4ace4 in base::WaitableEvent::Wait() () at /lib64/libQt5WebEngineCore.so.5
#3  0x00007f921fb2c5f3 in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () at /lib64/libQt5WebEngineCore.so.5
#4  0x00007f921fb3ee8a in base::RunLoop::Run() () at /lib64/libQt5WebEngineCore.so.5
#5  0x00007f921fb549a5 in base::Thread::Run(base::MessageLoop*) () at /lib64/libQt5WebEngineCore.so.5
#6  0x00007f921fb54c64 in base::Thread::ThreadMain() () at /lib64/libQt5WebEngineCore.so.5
#7  0x00007f921fb513d2 in base::(anonymous namespace)::ThreadFunc(void*) () at /lib64/libQt5WebEngineCore.so.5
#8  0x00007f9225d886ca in start_thread (arg=0x7f91cf7fe700) at pthread_create.c:333
#9  0x00007f9229797f7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 6 (Thread 0x7f91cffff700 (LWP 22408)):
#0  0x00007f92297a5f5c in __lll_lock_wait_private () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:95
#1  0x00007f92297a7b64 in ___fprintf_chk (fp=0x7f9229a52730 <_IO_stdfile_2_lock>, flag=1, format=0x7f9210c1ec74 "[%s] %s\n") at fprintf_chk.c:30
#2  0x00007f9210c0686e in _warn_helper () at /lib64/libevent-2.0.so.5
#3  0x00007f9210c06a64 in event_warn () at /lib64/libevent-2.0.so.5
#4  0x00007f9210c0b1e8 in epoll_dispatch () at /lib64/libevent-2.0.so.5
#5  0x00007f9210bf518a in event_base_loop () at /lib64/libevent-2.0.so.5
#6  0x00007f921fb08192 in base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () at /lib64/libQt5WebEngineCore.so.5
#7  0x00007f921fb3ee8a in base::RunLoop::Run() () at /lib64/libQt5WebEngineCore.so.5
#8  0x00007f921fb549a5 in base::Thread::Run(base::MessageLoop*) () at /lib64/libQt5WebEngineCore.so.5
#9  0x00007f921fb54c64 in base::Thread::ThreadMain() () at /lib64/libQt5WebEngineCore.so.5
#10 0x00007f921fb513d2 in base::(anonymous namespace)::ThreadFunc(void*) () at /lib64/libQt5WebEngineCore.so.5
#11 0x00007f9225d886ca in start_thread (arg=0x7f91cffff700) at pthread_create.c:333
#12 0x00007f9229797f7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 5 (Thread 0x7f91e9f52700 (LWP 22388)):
#0  0x00007f921524a879 in g_mutex_lock (mutex=mutex@entry=0x7f91e0000990) at gthread-posix.c:1336
#1  0x00007f92152046aa in g_main_context_prepare (context=context@entry=0x7f91e0000990, priority=priority@entry=0x7f91e9f51b40) at gmain.c:3504
#2  0x00007f921520508b in g_main_context_iterate (context=context@entry=0x7f91e0000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3909
#3  0x00007f921520527c in g_main_context_iteration (context=0x7f91e0000990, may_block=1) at gmain.c:3990
#4  0x00007f922a5926eb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f922a54368a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#6  0x00007f922a3a05e3 in QThread::exec() () at /lib64/libQt5Core.so.5
#7  0x00007f922a3a49ca in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#8  0x00007f9225d886ca in start_thread (arg=0x7f91e9f52700) at pthread_create.c:333
#9  0x00007f9229797f7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 4 (Thread 0x7f91ea753700 (LWP 22386)):
#0  0x00007f921520220f in g_source_iter_next (iter=iter@entry=0x7f91ea752ac0, source=source@entry=0x7f91ea752ab8) at gmain.c:979
#1  0x00007f921520463b in g_main_context_prepare (context=context@entry=0x7f91dc000990, priority=priority@entry=0x7f91ea752b40) at gmain.c:3479
#2  0x00007f921520508b in g_main_context_iterate (context=context@entry=0x7f91dc000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3909
#3  0x00007f921520527c in g_main_context_iteration (context=0x7f91dc000990, may_block=1) at gmain.c:3990
#4  0x00007f922a5926eb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f922a54368a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#6  0x00007f922a3a05e3 in QThread::exec() () at /lib64/libQt5Core.so.5
#7  0x00007f922a3a49ca in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#8  0x00007f9225d886ca in start_thread (arg=0x7f91ea753700) at pthread_create.c:333
#9  0x00007f9229797f7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 3 (Thread 0x7f91eaf54700 (LWP 22385)):
#0  0x00007f921524a879 in g_mutex_lock (mutex=mutex@entry=0x7f91e4000990) at gthread-posix.c:1336
#1  0x00007f9215205268 in g_main_context_iteration (context=0x7f91e4000990, may_block=1) at gmain.c:3989
#2  0x00007f922a5926eb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#3  0x00007f922a54368a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007f922a3a05e3 in QThread::exec() () at /lib64/libQt5Core.so.5
#5  0x00007f922a3a49ca in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#6  0x00007f9225d886ca in start_thread (arg=0x7f91eaf54700) at pthread_create.c:333
#7  0x00007f9229797f7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 2 (Thread 0x7f91fa3b3700 (LWP 22384)):
#0  0x00007f921524a894 in g_mutex_unlock (mutex=0x7f91ec000990) at gthread-posix.c:1348
#1  0x00007f9215204690 in g_main_context_prepare (context=context@entry=0x7f91ec000990, priority=priority@entry=0x7f91fa3b2b00) at gmain.c:3499
#2  0x00007f921520508b in g_main_context_iterate (context=context@entry=0x7f91ec000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3909
#3  0x00007f921520527c in g_main_context_iteration (context=0x7f91ec000990, may_block=1) at gmain.c:3990
#4  0x00007f922a5926eb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f922a54368a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#6  0x00007f922a3a05e3 in QThread::exec() () at /lib64/libQt5Core.so.5
#7  0x00007f922b53bfb9 in QDBusConnectionManager::run() () at /lib64/libQt5DBus.so.5
#8  0x00007f922a3a49ca in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#9  0x00007f9225d886ca in start_thread (arg=0x7f91fa3b3700) at pthread_create.c:333
#10 0x00007f9229797f7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 1 (Thread 0x7f9204aeb940 (LWP 22382)):
[KCrash Handler]
#6  0x00007f92296c591f in __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:58
#7  0x00007f92296c751a in __GI_abort () at abort.c:89
#8  0x00007f92296bdda7 in __assert_fail_base (fmt=<optimized out>, assertion=assertion@entry=0x7f91f86c58cb "kref", file=file@entry=0x7f91f86c58ba "pushbuf.c", line=line@entry=727, function=function@entry=0x7f91f86c58f0 <__PRETTY_FUNCTION__.6242> "nouveau_pushbuf_data") at assert.c:92
#9  0x00007f92296bde52 in __GI___assert_fail (assertion=assertion@entry=0x7f91f86c58cb "kref", file=file@entry=0x7f91f86c58ba "pushbuf.c", line=line@entry=727, function=function@entry=0x7f91f86c58f0 <__PRETTY_FUNCTION__.6242> "nouveau_pushbuf_data") at assert.c:101
#10 0x00007f91f86c3cd4 in nouveau_pushbuf_data (push=push@entry=0x55b80fea55f0, bo=0x55b80fea5490, offset=254960, length=456) at pushbuf.c:727
#11 0x00007f91f86c3c1b in nouveau_pushbuf_data (push=push@entry=0x55b80fea55f0, bo=bo@entry=0x0, offset=offset@entry=0, length=length@entry=0) at pushbuf.c:719
#12 0x00007f91f86c3d6a in pushbuf_submit (push=push@entry=0x55b80fea55f0, chan=<optimized out>, chan=<optimized out>) at pushbuf.c:330
#13 0x00007f91f86c400f in pushbuf_flush (push=push@entry=0x55b80fea55f0) at pushbuf.c:405
#14 0x00007f91f86c4bc0 in nouveau_pushbuf_kick (push=0x55b80fea55f0, chan=<optimized out>) at pushbuf.c:779
#15 0x00007f91f3740486 in nvc0_flush () at /usr/lib64/dri/nouveau_dri.so
#16 0x00007f91f332c1aa in st_context_flush () at /usr/lib64/dri/nouveau_dri.so
#17 0x00007f91f34a765c in dri_flush () at /usr/lib64/dri/nouveau_dri.so
#18 0x00007f91f9986a9c in dri2SwapBuffers () at /lib64/libGLX_mesa.so.0
#19 0x00007f923013f6bd in QGLXContext::swapBuffers(QPlatformSurface*) () at /usr/lib64/qt5/plugins/xcbglintegrations/libqxcb-glx-integration.so
#20 0x00007f922a8b233d in QOpenGLContext::swapBuffers(QSurface*) () at /lib64/libQt5Gui.so.5
#21 0x00007f922aabae98 in QPlatformBackingStore::composeAndFlush(QWindow*, QRegion const&, QPoint const&, QPlatformTextureList*, QOpenGLContext*, bool) () at /lib64/libQt5Gui.so.5
#22 0x00007f91fde69c77 in QXcbBackingStore::composeAndFlush(QWindow*, QRegion const&, QPoint const&, QPlatformTextureList*, QOpenGLContext*, bool) () at /lib64/libQt5XcbQpa.so.5
#23 0x00007f922ad91dad in QWidgetBackingStore::qt_flush(QWidget*, QRegion const&, QBackingStore*, QWidget*, QPoint const&, QPlatformTextureList*, QWidgetBackingStore*) (widget=0x55b810f8a840, region=..., backingStore=<optimized out>, tlw=<optimized out>, tlwOffset=..., widgetTextures=<optimized out>, widgetBackingStore=<optimized out>) at kernel/qwidgetbackingstore.cpp:140
#24 0x00007f922ad933de in QWidgetBackingStore::flush(QWidget*) (this=this@entry=0x55b8112b8f20, widget=widget@entry=0x0) at kernel/qwidgetbackingstore.cpp:1419
#25 0x00007f922ad952c4 in QWidgetBackingStore::endPaint(QRegion const&, QBackingStore*, BeginPaintInfo*) (beginPaintInfo=<synthetic pointer>, backingStore=<optimized out>, cleaned=..., this=0x55b8112b8f20) at kernel/qwidgetbackingstore.cpp:361
#26 0x00007f922ad952c4 in QWidgetBackingStore::doSync() (this=this@entry=0x55b8112b8f20) at kernel/qwidgetbackingstore.cpp:1403
#27 0x00007f922ad9547f in QWidgetBackingStore::sync() (this=0x55b8112b8f20) at kernel/qwidgetbackingstore.cpp:1179
#28 0x00007f922adb43af in QWidgetPrivate::syncBackingStore() (this=0x55b810f8aac0) at kernel/qwidget.cpp:1962
#29 0x00007f922adcc898 in QWidget::event(QEvent*) (this=this@entry=0x55b810f8a840, event=event@entry=0x55b811b7c370) at kernel/qwidget.cpp:9100
#30 0x00007f922aecc2ab in QMainWindow::event(QEvent*) (this=0x55b810f8a840, event=0x55b811b7c370) at widgets/qmainwindow.cpp:1543
#31 0x00007f922e25a747 in KMainWindow::event(QEvent*) () at /lib64/libKF5XmlGui.so.5
#32 0x00007f922e29fe65 in KXmlGuiWindow::event(QEvent*) () at /lib64/libKF5XmlGui.so.5
#33 0x00007f922ad84ecc in QApplicationPrivate::notify_helper(QObject*, QEvent*) (this=<optimized out>, receiver=0x55b810f8a840, e=0x55b811b7c370) at kernel/qapplication.cpp:3799
#34 0x00007f922ad8c671 in QApplication::notify(QObject*, QEvent*) (this=0x7ffc3c2ad580, receiver=0x55b810f8a840, e=0x55b811b7c370) at kernel/qapplication.cpp:3556
#35 0x00007f922a5446fa in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /lib64/libQt5Core.so.5
#36 0x00007f922a546de0 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /lib64/libQt5Core.so.5
#37 0x00007f922a592653 in postEventSourceDispatch(_GSource*, int (*)(void*), void*) () at /lib64/libQt5Core.so.5
#38 0x00007f9215204e52 in g_main_dispatch (context=0x7f91f40016f0) at gmain.c:3203
#39 0x00007f9215204e52 in g_main_context_dispatch (context=context@entry=0x7f91f40016f0) at gmain.c:3856
#40 0x00007f92152051d0 in g_main_context_iterate (context=context@entry=0x7f91f40016f0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3929
#41 0x00007f921520527c in g_main_context_iteration (context=0x7f91f40016f0, may_block=1) at gmain.c:3990
#42 0x00007f922a5926cf in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#43 0x00007f922a54368a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#44 0x00007f922a54b18c in QCoreApplication::exec() () at /lib64/libQt5Core.so.5
#45 0x000055b80f6c9cab in main ()

Possible duplicates by query: bug 359869.

Reported using DrKonqi
Comment 1 John M. Harris, Jr. 2017-06-11 03:56:44 UTC 
This is clearly an issue with nouveau, and has been known on the Fedora side for some time. For future reference, and to help any other Fedora users (and perhaps others) who may run into similar issues, this is being tracked over on the Red Hat tracker at https://bugzilla.redhat.com/show_bug.cgi?id=1376107