[kmail2] [Bug 384513] New: kmail crashed when handling mailto: URL from firefox

Mikel Rychliski bugzilla_noreply at kde.org
Sat Sep 9 03:38:59 BST 2017 

https://bugs.kde.org/show_bug.cgi?id=384513

            Bug ID: 384513
           Summary: kmail crashed when handling mailto: URL from firefox
           Product: kmail2
           Version: 5.5.2
          Platform: openSUSE RPMs
                OS: Linux
            Status: UNCONFIRMED
          Keywords: drkonqi
          Severity: crash
          Priority: NOR
         Component: general
          Assignee: kdepim-bugs at kde.org
          Reporter: mikel at mikelr.com
  Target Milestone: ---

Application: kmail (5.5.2)

Qt Version: 5.6.2
Frameworks Version: 5.32.0
Operating System: Linux 4.4.79-19-default x86_64
Distribution: "openSUSE Leap 42.3"

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

kmail was minimized and not being used at the time of the crash. The crash
occured after clicking a mailto: url in firefox. OpenSUSE 42.3, KDE plasma
desktop. Nothing appeared from kmail before the crash.

-- Backtrace:
Application: KMail (kmail), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f7419884940 (LWP 22081))]

Thread 22 (Thread 0x7f7399ffb700 (LWP 22268)):
#0  0x00007f740c7310bf in pthread_cond_wait@@GLIBC_2.3.2 () at
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f74036edd10 in mojo::system::Waiter::Wait(unsigned long, unsigned
int*) () at /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007f74036db7bb in mojo::system::Core::WaitManyInternal(unsigned int
const*, unsigned int const*, unsigned int, unsigned long, unsigned int*,
mojo::system::HandleSignalsState*) () at /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007f74036dba35 in
mojo::system::Core::WaitMany(mojo::system::UserPointer<unsigned int const>,
mojo::system::UserPointer<unsigned int const>, unsigned int, unsigned long,
mojo::system::UserPointer<unsigned int>,
mojo::system::UserPointer<MojoHandleSignalsState>) () at
/usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007f74036d8327 in MojoWaitMany () at
/usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007f7404fb31ca in
mojo::common::MessagePumpMojo::DoInternalWork(mojo::common::MessagePumpMojo::RunState
const&, bool) () at /usr/lib64/libQt5WebEngineCore.so.5
#6  0x00007f7404fb34e1 in
mojo::common::MessagePumpMojo::DoRunLoop(mojo::common::MessagePumpMojo::RunState*,
base::MessagePump::Delegate*) () at /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007f7404fb35d2 in
mojo::common::MessagePumpMojo::Run(base::MessagePump::Delegate*) () at
/usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007f740387bc12 in base::RunLoop::Run() () at
/usr/lib64/libQt5WebEngineCore.so.5
#9  0x00007f74038676b5 in base::MessageLoop::Run() () at
/usr/lib64/libQt5WebEngineCore.so.5
#10 0x00007f74038934f0 in base::Thread::ThreadMain() () at
/usr/lib64/libQt5WebEngineCore.so.5
#11 0x00007f740388fece in base::(anonymous namespace)::ThreadFunc(void*) () at
/usr/lib64/libQt5WebEngineCore.so.5
#12 0x00007f740c72c744 in start_thread (arg=0x7f7399ffb700) at
pthread_create.c:334
#13 0x00007f74169baaad in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 21 (Thread 0x7f739a7fc700 (LWP 22267)):
#0  0x00007f740c7310bf in pthread_cond_wait@@GLIBC_2.3.2 () at
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f7403892189 in
base::SequencedWorkerPool::Inner::ThreadLoop(base::SequencedWorkerPool::Worker*)
() at /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007f740389294d in base::SequencedWorkerPool::Worker::Run() () at
/usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007f7403893170 in base::SimpleThread::ThreadMain() () at
/usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007f740388fece in base::(anonymous namespace)::ThreadFunc(void*) () at
/usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007f740c72c744 in start_thread (arg=0x7f739a7fc700) at
pthread_create.c:334
#6  0x00007f74169baaad in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 20 (Thread 0x7f739affd700 (LWP 22240)):
#0  0x00007f74169b220d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f73fbec80a1 in  () at /usr/lib64/libpulse.so.0
#2  0x00007f73fbeb976c in pa_mainloop_poll () at /usr/lib64/libpulse.so.0
#3  0x00007f73fbeb9dde in pa_mainloop_iterate () at /usr/lib64/libpulse.so.0
#4  0x00007f73fbeb9e90 in pa_mainloop_run () at /usr/lib64/libpulse.so.0
#5  0x00007f73fbec8006 in  () at /usr/lib64/libpulse.so.0
#6  0x00007f73f6c26408 in  () at /usr/lib64/pulseaudio/libpulsecommon-9.0.so
#7  0x00007f740c72c744 in start_thread (arg=0x7f739affd700) at
pthread_create.c:334
#8  0x00007f74169baaad in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 19 (Thread 0x7f739b7fe700 (LWP 22239)):
#0  0x00007f740c7310bf in pthread_cond_wait@@GLIBC_2.3.2 () at
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f7403888cbf in base::WaitableEvent::TimedWait(base::TimeDelta
const&) () at /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007f7403888d94 in base::WaitableEvent::Wait() () at
/usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007f740386b62b in
base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () at
/usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007f740387bc12 in base::RunLoop::Run() () at
/usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007f74038676b5 in base::MessageLoop::Run() () at
/usr/lib64/libQt5WebEngineCore.so.5
#6  0x00007f74038934f0 in base::Thread::ThreadMain() () at
/usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007f740388fece in base::(anonymous namespace)::ThreadFunc(void*) () at
/usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007f740c72c744 in start_thread (arg=0x7f739b7fe700) at
pthread_create.c:334
#9  0x00007f74169baaad in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 18 (Thread 0x7f739bfff700 (LWP 22238)):
#0  0x00007f740c7310bf in pthread_cond_wait@@GLIBC_2.3.2 () at
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f740328e979 in cc::TaskGraphRunner::Run() () at
/usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007f7403893170 in base::SimpleThread::ThreadMain() () at
/usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007f740388fece in base::(anonymous namespace)::ThreadFunc(void*) () at
/usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007f740c72c744 in start_thread (arg=0x7f739bfff700) at
pthread_create.c:334
#5  0x00007f74169baaad in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 17 (Thread 0x7f73b0ff9700 (LWP 22237)):
#0  0x00007f740c7310bf in pthread_cond_wait@@GLIBC_2.3.2 () at
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f7403888cbf in base::WaitableEvent::TimedWait(base::TimeDelta
const&) () at /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007f7403888d94 in base::WaitableEvent::Wait() () at
/usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007f740386b62b in
base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () at
/usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007f740387bc12 in base::RunLoop::Run() () at
/usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007f74038676b5 in base::MessageLoop::Run() () at
/usr/lib64/libQt5WebEngineCore.so.5
#6  0x00007f74038934f0 in base::Thread::ThreadMain() () at
/usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007f740388fece in base::(anonymous namespace)::ThreadFunc(void*) () at
/usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007f740c72c744 in start_thread (arg=0x7f73b0ff9700) at
pthread_create.c:334
#9  0x00007f74169baaad in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 16 (Thread 0x7f73b17fa700 (LWP 22236)):
#0  0x00007f74169ae2ed in write () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f7416944840 in _IO_new_file_write (f=0x7f7416c6f060
<_IO_2_1_stderr_>, data=0x7f73b17f6b80, n=39) at fileops.c:1263
#2  0x00007f7416943e63 in new_do_write (fp=fp at entry=0x7f7416c6f060
<_IO_2_1_stderr_>, data=data at entry=0x7f73b17f6b80 "[warn] epoll_wait: Bad file
descriptor\n", to_do=to_do at entry=39) at fileops.c:518
#3  0x00007f7416944e46 in _IO_new_file_xsputn (f=0x7f7416c6f060
<_IO_2_1_stderr_>, data=<optimized out>, n=39) at fileops.c:1342
#4  0x00007f741691bb1b in buffered_vfprintf (s=s at entry=0x7f7416c6f060
<_IO_2_1_stderr_>, format=format at entry=0x7f73fa91c791 "[%s] %s\n",
args=args at entry=0x7f73b17f9158) at vfprintf.c:2367
#5  0x00007f7416918e8e in _IO_vfprintf_internal (s=s at entry=0x7f7416c6f060
<_IO_2_1_stderr_>, format=format at entry=0x7f73fa91c791 "[%s] %s\n",
ap=ap at entry=0x7f73b17f9158) at vfprintf.c:1292
#6  0x00007f74169c8aa3 in ___fprintf_chk (fp=0x7f7416c6f060 <_IO_2_1_stderr_>,
flag=flag at entry=1, format=format at entry=0x7f73fa91c791 "[%s] %s\n") at
fprintf_chk.c:35
#7  0x00007f73fa904fdf in fprintf (__fmt=0x7f73fa91c791 "[%s] %s\n",
__stream=<optimized out>) at /usr/include/bits/stdio2.h:97
#8  0x00007f73fa904fdf in event_log (msg=0x7f73b17f9240 "epoll_wait: Bad file
descriptor", severity=2) at log.c:222
#9  0x00007f73fa904fdf in _warn_helper (severity=severity at entry=2,
errstr=0x7f7416a365a6 "Bad file descriptor", fmt=fmt at entry=0x7f73fa91cf6a
"epoll_wait", ap=ap at entry=0x7f73b17f9678) at log.c:187
#10 0x00007f73fa9051b7 in event_warn (fmt=fmt at entry=0x7f73fa91cf6a
"epoll_wait") at log.c:101
#11 0x00007f73fa909468 in epoll_dispatch (base=0x7f73a0001950, tv=<optimized
out>) at epoll.c:413
#12 0x00007f73fa8f5477 in event_base_loop (base=0x7f73a0001950, flags=1) at
event.c:1607
#13 0x00007f74038488e1 in
base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () at
/usr/lib64/libQt5WebEngineCore.so.5
#14 0x00007f740387bc12 in base::RunLoop::Run() () at
/usr/lib64/libQt5WebEngineCore.so.5
#15 0x00007f74038676b5 in base::MessageLoop::Run() () at
/usr/lib64/libQt5WebEngineCore.so.5
#16 0x00007f7402f20c95 in
content::BrowserThreadImpl::IOThreadRun(base::MessageLoop*) () at
/usr/lib64/libQt5WebEngineCore.so.5
#17 0x00007f7402f20dab in content::BrowserThreadImpl::Run(base::MessageLoop*)
() at /usr/lib64/libQt5WebEngineCore.so.5
#18 0x00007f74038934f0 in base::Thread::ThreadMain() () at
/usr/lib64/libQt5WebEngineCore.so.5
#19 0x00007f740388fece in base::(anonymous namespace)::ThreadFunc(void*) () at
/usr/lib64/libQt5WebEngineCore.so.5
#20 0x00007f740c72c744 in start_thread (arg=0x7f73b17fa700) at
pthread_create.c:334
#21 0x00007f74169baaad in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 15 (Thread 0x7f73b1ffb700 (LWP 22235)):
#0  0x00007f74169c6eab in __lll_lock_wait_private () at
../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:95
#1  0x00007f74169c8a46 in ___fprintf_chk (fp=0x7f7416c70740
<_IO_stdfile_2_lock>, flag=flag at entry=1, format=format at entry=0x7f73fa91c791
"[%s] %s\n") at fprintf_chk.c:30
#2  0x00007f73fa904fdf in fprintf (__fmt=0x7f73fa91c791 "[%s] %s\n",
__stream=<optimized out>) at /usr/include/bits/stdio2.h:97
#3  0x00007f73fa904fdf in event_log (msg=0x7f73b1ffa240 "epoll_wait: Bad file
descriptor", severity=2) at log.c:222
#4  0x00007f73fa904fdf in _warn_helper (severity=severity at entry=2,
errstr=0x7f7416a365a6 "Bad file descriptor", fmt=fmt at entry=0x7f73fa91cf6a
"epoll_wait", ap=ap at entry=0x7f73b1ffa678) at log.c:187
#5  0x00007f73fa9051b7 in event_warn (fmt=fmt at entry=0x7f73fa91cf6a
"epoll_wait") at log.c:101
#6  0x00007f73fa909468 in epoll_dispatch (base=0x7f739c001960, tv=<optimized
out>) at epoll.c:413
#7  0x00007f73fa8f5477 in event_base_loop (base=0x7f739c001960, flags=2) at
event.c:1607
#8  0x00007f740384884e in
base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () at
/usr/lib64/libQt5WebEngineCore.so.5
#9  0x00007f740387bc12 in base::RunLoop::Run() () at
/usr/lib64/libQt5WebEngineCore.so.5
#10 0x00007f74038676b5 in base::MessageLoop::Run() () at
/usr/lib64/libQt5WebEngineCore.so.5
#11 0x00007f7402f20c15 in
content::BrowserThreadImpl::CacheThreadRun(base::MessageLoop*) () at
/usr/lib64/libQt5WebEngineCore.so.5
#12 0x00007f7402f20e0b in content::BrowserThreadImpl::Run(base::MessageLoop*)
() at /usr/lib64/libQt5WebEngineCore.so.5
#13 0x00007f74038934f0 in base::Thread::ThreadMain() () at
/usr/lib64/libQt5WebEngineCore.so.5
#14 0x00007f740388fece in base::(anonymous namespace)::ThreadFunc(void*) () at
/usr/lib64/libQt5WebEngineCore.so.5
#15 0x00007f740c72c744 in start_thread (arg=0x7f73b1ffb700) at
pthread_create.c:334
#16 0x00007f74169baaad in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 14 (Thread 0x7f73b27fc700 (LWP 22234)):
#0  0x00007f740c7310bf in pthread_cond_wait@@GLIBC_2.3.2 () at
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f7403888cbf in base::WaitableEvent::TimedWait(base::TimeDelta
const&) () at /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007f7403888d94 in base::WaitableEvent::Wait() () at
/usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007f740386b62b in
base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () at
/usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007f740387bc12 in base::RunLoop::Run() () at
/usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007f74038676b5 in base::MessageLoop::Run() () at
/usr/lib64/libQt5WebEngineCore.so.5
#6  0x00007f7402f20b95 in
content::BrowserThreadImpl::ProcessLauncherThreadRun(base::MessageLoop*) () at
/usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007f7402f20dfb in content::BrowserThreadImpl::Run(base::MessageLoop*)
() at /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007f74038934f0 in base::Thread::ThreadMain() () at
/usr/lib64/libQt5WebEngineCore.so.5
#9  0x00007f740388fece in base::(anonymous namespace)::ThreadFunc(void*) () at
/usr/lib64/libQt5WebEngineCore.so.5
#10 0x00007f740c72c744 in start_thread (arg=0x7f73b27fc700) at
pthread_create.c:334
#11 0x00007f74169baaad in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 13 (Thread 0x7f73b2ffd700 (LWP 22233)):
#0  0x00007f740c7310bf in pthread_cond_wait@@GLIBC_2.3.2 () at
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f7403888cbf in base::WaitableEvent::TimedWait(base::TimeDelta
const&) () at /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007f7403888d94 in base::WaitableEvent::Wait() () at
/usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007f740386b62b in
base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () at
/usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007f740387bc12 in base::RunLoop::Run() () at
/usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007f74038676b5 in base::MessageLoop::Run() () at
/usr/lib64/libQt5WebEngineCore.so.5
#6  0x00007f7402f20b15 in
content::BrowserThreadImpl::FileUserBlockingThreadRun(base::MessageLoop*) () at
/usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007f7402f20deb in content::BrowserThreadImpl::Run(base::MessageLoop*)
() at /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007f74038934f0 in base::Thread::ThreadMain() () at
/usr/lib64/libQt5WebEngineCore.so.5
#9  0x00007f740388fece in base::(anonymous namespace)::ThreadFunc(void*) () at
/usr/lib64/libQt5WebEngineCore.so.5
#10 0x00007f740c72c744 in start_thread (arg=0x7f73b2ffd700) at
pthread_create.c:334
#11 0x00007f74169baaad in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 12 (Thread 0x7f73b37fe700 (LWP 22232)):
#0  0x00007f74169c6eab in __lll_lock_wait_private () at
../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:95
#1  0x00007f74169c8a46 in ___fprintf_chk (fp=0x7f7416c70740
<_IO_stdfile_2_lock>, flag=flag at entry=1, format=format at entry=0x7f73fa91c791
"[%s] %s\n") at fprintf_chk.c:30
#2  0x00007f73fa904fdf in fprintf (__fmt=0x7f73fa91c791 "[%s] %s\n",
__stream=<optimized out>) at /usr/include/bits/stdio2.h:97
#3  0x00007f73fa904fdf in event_log (msg=0x7f73b37fd240 "epoll_wait: Bad file
descriptor", severity=2) at log.c:222
#4  0x00007f73fa904fdf in _warn_helper (severity=severity at entry=2,
errstr=0x7f7416a365a6 "Bad file descriptor", fmt=fmt at entry=0x7f73fa91cf6a
"epoll_wait", ap=ap at entry=0x7f73b37fd678) at log.c:187
#5  0x00007f73fa9051b7 in event_warn (fmt=fmt at entry=0x7f73fa91cf6a
"epoll_wait") at log.c:101
#6  0x00007f73fa909468 in epoll_dispatch (base=0x7f73a4001960, tv=<optimized
out>) at epoll.c:413
#7  0x00007f73fa8f5477 in event_base_loop (base=0x7f73a4001960, flags=2) at
event.c:1607
#8  0x00007f740384884e in
base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () at
/usr/lib64/libQt5WebEngineCore.so.5
#9  0x00007f740387bc12 in base::RunLoop::Run() () at
/usr/lib64/libQt5WebEngineCore.so.5
#10 0x00007f74038676b5 in base::MessageLoop::Run() () at
/usr/lib64/libQt5WebEngineCore.so.5
#11 0x00007f7402f20a95 in
content::BrowserThreadImpl::FileThreadRun(base::MessageLoop*) () at
/usr/lib64/libQt5WebEngineCore.so.5
#12 0x00007f7402f20ddb in content::BrowserThreadImpl::Run(base::MessageLoop*)
() at /usr/lib64/libQt5WebEngineCore.so.5
#13 0x00007f74038934f0 in base::Thread::ThreadMain() () at
/usr/lib64/libQt5WebEngineCore.so.5
#14 0x00007f740388fece in base::(anonymous namespace)::ThreadFunc(void*) () at
/usr/lib64/libQt5WebEngineCore.so.5
#15 0x00007f740c72c744 in start_thread (arg=0x7f73b37fe700) at
pthread_create.c:334
#16 0x00007f74169baaad in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 11 (Thread 0x7f73b3fff700 (LWP 22231)):
#0  0x00007f740c7310bf in pthread_cond_wait@@GLIBC_2.3.2 () at
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f7403888cbf in base::WaitableEvent::TimedWait(base::TimeDelta
const&) () at /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007f7403888d94 in base::WaitableEvent::Wait() () at
/usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007f740386b62b in
base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () at
/usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007f740387bc12 in base::RunLoop::Run() () at
/usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007f74038676b5 in base::MessageLoop::Run() () at
/usr/lib64/libQt5WebEngineCore.so.5
#6  0x00007f7402f20a15 in
content::BrowserThreadImpl::DBThreadRun(base::MessageLoop*) () at
/usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007f7402f20dcb in content::BrowserThreadImpl::Run(base::MessageLoop*)
() at /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007f74038934f0 in base::Thread::ThreadMain() () at
/usr/lib64/libQt5WebEngineCore.so.5
#9  0x00007f740388fece in base::(anonymous namespace)::ThreadFunc(void*) () at
/usr/lib64/libQt5WebEngineCore.so.5
#10 0x00007f740c72c744 in start_thread (arg=0x7f73b3fff700) at
pthread_create.c:334
#11 0x00007f74169baaad in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 10 (Thread 0x7f73c9fc3700 (LWP 22228)):
#0  0x00007f740c7310bf in pthread_cond_wait@@GLIBC_2.3.2 () at
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f7403888cbf in base::WaitableEvent::TimedWait(base::TimeDelta
const&) () at /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007f7403888d94 in base::WaitableEvent::Wait() () at
/usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007f740386b62b in
base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () at
/usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007f740387bc12 in base::RunLoop::Run() () at
/usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007f74038676b5 in base::MessageLoop::Run() () at
/usr/lib64/libQt5WebEngineCore.so.5
#6  0x00007f74038934f0 in base::Thread::ThreadMain() () at
/usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007f740388fece in base::(anonymous namespace)::ThreadFunc(void*) () at
/usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007f740c72c744 in start_thread (arg=0x7f73c9fc3700) at
pthread_create.c:334
#9  0x00007f74169baaad in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 9 (Thread 0x7f73ca7c4700 (LWP 22227)):
#0  0x00007f74169c6eab in __lll_lock_wait_private () at
../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:95
#1  0x00007f74169c8a46 in ___fprintf_chk (fp=0x7f7416c70740
<_IO_stdfile_2_lock>, flag=flag at entry=1, format=format at entry=0x7f73fa91c791
"[%s] %s\n") at fprintf_chk.c:30
#2  0x00007f73fa904fdf in fprintf (__fmt=0x7f73fa91c791 "[%s] %s\n",
__stream=<optimized out>) at /usr/include/bits/stdio2.h:97
#3  0x00007f73fa904fdf in event_log (msg=0x7f73ca7c3590 "epoll_wait: Bad file
descriptor", severity=2) at log.c:222
#4  0x00007f73fa904fdf in _warn_helper (severity=severity at entry=2,
errstr=0x7f7416a365a6 "Bad file descriptor", fmt=fmt at entry=0x7f73fa91cf6a
"epoll_wait", ap=ap at entry=0x7f73ca7c39c8) at log.c:187
#5  0x00007f73fa9051b7 in event_warn (fmt=fmt at entry=0x7f73fa91cf6a
"epoll_wait") at log.c:101
#6  0x00007f73fa909468 in epoll_dispatch (base=0x7f73bc001960, tv=<optimized
out>) at epoll.c:413
#7  0x00007f73fa8f5477 in event_base_loop (base=0x7f73bc001960, flags=2) at
event.c:1607
#8  0x00007f740384884e in
base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () at
/usr/lib64/libQt5WebEngineCore.so.5
#9  0x00007f740387bc12 in base::RunLoop::Run() () at
/usr/lib64/libQt5WebEngineCore.so.5
#10 0x00007f74038676b5 in base::MessageLoop::Run() () at
/usr/lib64/libQt5WebEngineCore.so.5
#11 0x00007f74038934f0 in base::Thread::ThreadMain() () at
/usr/lib64/libQt5WebEngineCore.so.5
#12 0x00007f740388fece in base::(anonymous namespace)::ThreadFunc(void*) () at
/usr/lib64/libQt5WebEngineCore.so.5
#13 0x00007f740c72c744 in start_thread (arg=0x7f73ca7c4700) at
pthread_create.c:334
#14 0x00007f74169baaad in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 8 (Thread 0x7f73dbfff700 (LWP 22110)):
#0  0x00007f74170a5543 in
QAtomicOps<QMutexData*>::testAndSetRelease<QMutexData*>
(currentValue=<synthetic pointer>, newValue=0x0, expectedValue=0x1,
_q_value=...) at ../../src/corelib/arch/qatomic_cxx11.h:169
#1  0x00007f74170a5543 in
QBasicAtomicPointer<QMutexData>::testAndSetRelease(QMutexData*, QMutexData*,
QMutexData*&) (currentValue=<synthetic pointer>: <optimized out>, newValue=0x0,
expectedValue=0x1, this=this at entry=0x1b3d248) at
../../src/corelib/thread/qbasicatomic.h:278
#2  0x00007f74170a5543 in QBasicMutex::fastTryUnlock(QMutexData*&)
(current=<synthetic pointer>: <optimized out>, this=this at entry=0x1b3d248) at
thread/qmutex.h:85
#3  0x00007f74170a5543 in QMutex::unlock() (this=this at entry=0x1b3d248) at
thread/qmutex.cpp:271
#4  0x00007f74172bf7d5 in QMutexLocker::unlock() (this=<synthetic pointer>) at
../../src/corelib/thread/qmutex.h:138
#5  0x00007f74172bf7d5 in QMutexLocker::~QMutexLocker (this=<synthetic
pointer>, __in_chrg=<optimized out>) at ../../src/corelib/thread/qmutex.h:132
#6  0x00007f74172bf7d5 in QThreadData::canWaitLocked() (this=0x1b3d220) at
../../src/corelib/thread/qthread_p.h:247
#7  0x00007f74172bf7d5 in postEventSourcePrepare (timeout=<synthetic pointer>,
s=0x7f73d40012d0) at kernel/qeventdispatcher_glib.cpp:253
#8  0x00007f74172bf7d5 in postEventSourceCheck(GSource*)
(source=0x7f73d40012d0) at kernel/qeventdispatcher_glib.cpp:263
#9  0x00007f740bf11da1 in g_main_context_check () at
/usr/lib64/libglib-2.0.so.0
#10 0x00007f740bf122a8 in  () at /usr/lib64/libglib-2.0.so.0
#11 0x00007f740bf1242c in g_main_context_iteration () at
/usr/lib64/libglib-2.0.so.0
#12 0x00007f74172bf1ab in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
(this=0x7f73d40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:419
#13 0x00007f741726cbfb in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>)
(this=this at entry=0x7f73dbffec90, flags=..., flags at entry=...) at
kernel/qeventloop.cpp:206
#14 0x00007f74170a7f5a in QThread::exec() (this=<optimized out>) at
thread/qthread.cpp:500
#15 0x00007f74170aca29 in QThreadPrivate::start(void*) (arg=0x1a80770) at
thread/qthread_unix.cpp:365
#16 0x00007f740c72c744 in start_thread (arg=0x7f73dbfff700) at
pthread_create.c:334
#17 0x00007f74169baaad in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7f73e187c700 (LWP 22104)):
#0  0x00007f74169b220d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f740bf12314 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f740bf1242c in g_main_context_iteration () at
/usr/lib64/libglib-2.0.so.0
#3  0x00007f74172bf1ab in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
(this=0x7f73dc0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:419
#4  0x00007f741726cbfb in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>)
(this=this at entry=0x7f73e187bc60, flags=..., flags at entry=...) at
kernel/qeventloop.cpp:206
#5  0x00007f74170a7f5a in QThread::exec() (this=<optimized out>) at
thread/qthread.cpp:500
#6  0x00007f7415951295 in  () at /usr/lib64/libQt5DBus.so.5
#7  0x00007f74170aca29 in QThreadPrivate::start(void*) (arg=0x7f7415bbace0) at
thread/qthread_unix.cpp:365
#8  0x00007f740c72c744 in start_thread (arg=0x7f73e187c700) at
pthread_create.c:334
#9  0x00007f74169baaad in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7f73e2736700 (LWP 22102)):
#0  0x00007f740c7310bf in pthread_cond_wait@@GLIBC_2.3.2 () at
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f73eb54c203 in  () at /usr/lib64/dri/swrast_dri.so
#2  0x00007f73eb54bd87 in  () at /usr/lib64/dri/swrast_dri.so
#3  0x00007f740c72c744 in start_thread (arg=0x7f73e2736700) at
pthread_create.c:334
#4  0x00007f74169baaad in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7f73e2f37700 (LWP 22101)):
#0  0x00007f740c7310bf in pthread_cond_wait@@GLIBC_2.3.2 () at
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f73eb54c203 in  () at /usr/lib64/dri/swrast_dri.so
#2  0x00007f73eb54bd87 in  () at /usr/lib64/dri/swrast_dri.so
#3  0x00007f740c72c744 in start_thread (arg=0x7f73e2f37700) at
pthread_create.c:334
#4  0x00007f74169baaad in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7f73e3738700 (LWP 22100)):
#0  0x00007f740c7310bf in pthread_cond_wait@@GLIBC_2.3.2 () at
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f73eb54c203 in  () at /usr/lib64/dri/swrast_dri.so
#2  0x00007f73eb54bd87 in  () at /usr/lib64/dri/swrast_dri.so
#3  0x00007f740c72c744 in start_thread (arg=0x7f73e3738700) at
pthread_create.c:334
#4  0x00007f74169baaad in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7f73e3f39700 (LWP 22099)):
#0  0x00007f740c7310bf in pthread_cond_wait@@GLIBC_2.3.2 () at
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f73eb54c203 in  () at /usr/lib64/dri/swrast_dri.so
#2  0x00007f73eb54bd87 in  () at /usr/lib64/dri/swrast_dri.so
#3  0x00007f740c72c744 in start_thread (arg=0x7f73e3f39700) at
pthread_create.c:334
#4  0x00007f74169baaad in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f73f0fe1700 (LWP 22085)):
#0  0x00007f74169b220d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f7409c043e2 in  () at /usr/lib64/libxcb.so.1
#2  0x00007f7409c05fcf in xcb_wait_for_event () at /usr/lib64/libxcb.so.1
#3  0x00007f73f2ac40d9 in  () at /usr/lib64/libQt5XcbQpa.so.5
#4  0x00007f74170aca29 in QThreadPrivate::start(void*) (arg=0x18aa750) at
thread/qthread_unix.cpp:365
#5  0x00007f740c72c744 in start_thread (arg=0x7f73f0fe1700) at
pthread_create.c:334
#6  0x00007f74169baaad in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f7419884940 (LWP 22081)):
[KCrash Handler]
#6  0x00007f740782a03f in std::__atomic_base<int>::operator++() (this=0x1) at
/usr/include/c++/4.8/bits/atomic_base.h:404
#7  0x00007f740782a03f in QAtomicOps<int>::ref<int> (_q_value=...) at
/usr/include/qt5/QtCore/qatomic_cxx11.h:134
#8  0x00007f740782a03f in QBasicAtomicInteger<int>::ref() (this=0x1) at
/usr/include/qt5/QtCore/qbasicatomic.h:127
#9  0x00007f740782a03f in
QSharedPointer<QtWebEngineCore::BrowserContextAdapter>::ref() const
(this=<optimized out>) at /usr/include/qt5/QtCore/qsharedpointer_impl.h:543
#10 0x00007f740782a03f in
QSharedPointer<QtWebEngineCore::BrowserContextAdapter>::QSharedPointer
(other=..., this=0x7ffd4bded4a0) at
/usr/include/qt5/QtCore/qsharedpointer_impl.h:319
#11 0x00007f740782a03f in QWebEngineProfilePrivate::browserContext() const
(this=<optimized out>) at api/qwebengineprofile_p.h:73
#12 0x00007f740782a03f in QWebEnginePagePrivate::browserContextAdapter()
(this=0x1badd00) at api/qwebenginepage.cpp:492
#13 0x00007f740248e78e in
QtWebEngineCore::WebContentsDelegateQt::DidNavigateAnyFrame(content::RenderFrameHost*,
content::LoadCommittedDetails const&, content::FrameNavigateParams const&)
(this=0x1c78df0, render_frame_host=<optimized out>, details=..., params=...) at
/usr/src/debug/qtwebengine-opensource-src-5.6.2/src/core/web_contents_delegate_qt.cpp:351
#14 0x00007f7403043466 in
content::WebContentsImpl::DidNavigateAnyFramePostCommit(content::RenderFrameHostImpl*,
content::LoadCommittedDetails const&,
FrameHostMsg_DidCommitProvisionalLoad_Params const&) () at
/usr/lib64/libQt5WebEngineCore.so.5
#15 0x00007f740311f498 in
content::NavigatorImpl::DidNavigate(content::RenderFrameHostImpl*,
FrameHostMsg_DidCommitProvisionalLoad_Params const&) () at
/usr/lib64/libQt5WebEngineCore.so.5
#16 0x00007f7402f4d4a1 in
content::RenderFrameHostImpl::OnDidCommitProvisionalLoad(IPC::Message const&)
() at /usr/lib64/libQt5WebEngineCore.so.5
#17 0x00007f7402f54911 in
content::RenderFrameHostImpl::OnMessageReceived(IPC::Message const&) () at
/usr/lib64/libQt5WebEngineCore.so.5
#18 0x00007f7402fc77a1 in
content::RenderProcessHostImpl::OnMessageReceived(IPC::Message const&) [clone
.part.235] () at /usr/lib64/libQt5WebEngineCore.so.5
#19 0x00007f74038e9342 in
IPC::ChannelProxy::Context::OnDispatchMessage(IPC::Message const&) () at
/usr/lib64/libQt5WebEngineCore.so.5
#20 0x00007f74038b831e in base::debug::TaskAnnotator::RunTask(char const*, char
const*, base::PendingTask const&) () at /usr/lib64/libQt5WebEngineCore.so.5
#21 0x00007f74038681d4 in base::MessageLoop::RunTask(base::PendingTask const&)
() at /usr/lib64/libQt5WebEngineCore.so.5
#22 0x00007f74038684b1 in
base::MessageLoop::DeferOrRunPendingTask(base::PendingTask const&) () at
/usr/lib64/libQt5WebEngineCore.so.5
#23 0x00007f740386b1e3 in base::MessageLoop::DoWork() () at
/usr/lib64/libQt5WebEngineCore.so.5
#24 0x00007f7402491399 in WebEngineContext::destroy() (this=0x1badb00) at
/usr/src/debug/qtwebengine-opensource-src-5.6.2/src/core/web_engine_context.cpp:194
#25 0x00007f74024914ed in (anonymous namespace)::destroyContext() () at
/usr/src/debug/qtwebengine-opensource-src-5.6.2/src/core/web_engine_context.cpp:104
#26 0x00007f741726e0b4 in qt_call_post_routines() () at
kernel/qcoreapplication.cpp:298
#27 0x00007f7417f6cdb6 in QApplication::~QApplication() () at
/usr/lib64/libQt5Widgets.so.5
#28 0x0000000000403a18 in KMailApplication::~KMailApplication
(this=0x7ffd4bdeee00, __in_chrg=<optimized out>) at
/usr/src/debug/kmail-17.04.2/src/main.cpp:48
#29 0x0000000000403a18 in main(int, char**) (argc=2, argv=0x7ffd4bdef038) at
/usr/src/debug/kmail-17.04.2/src/main.cpp:164

Reported using DrKonqi

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