Bug 425651

Summary: Kontact/Kmail crash when opening attachments with kvantum
Product: [Applications] kontact Reporter: Felipe Saavedra <fsaavedr>
Component: generalAssignee: kdepim bugs <kdepim-bugs>
Status: REOPENED ---    
Severity: crash CC: chrisbrhm, uhhadd, walker.lfreitas
Priority: NOR Keywords: drkonqi
Version: unspecified   
Target Milestone: ---   
Platform: Compiled Sources   
OS: Linux   
Latest Commit: Version Fixed In:
Sentry Crash Report:
Attachments: New crash information added by DrKonqi

Description Felipe Saavedra 2020-08-21 17:08:39 UTC 
Application: kontact (5.14.3 (20.04.3))
 (Compiled from sources)
Qt Version: 5.15.0
Frameworks Version: 5.70.0
Operating System: Linux 5.8.2-gentoo-x86_64 x86_64
Windowing system: X11
Distribution: "Gentoo Base System release 2.6"

-- Information about the crash:
- Custom settings of the application:

When using kvantum as an Application Style, Kmail/Kontact always crash when openning attachments. When using other Application Style it works fine.
Maybe an index related issue. When is selected another windows or desktop, Kmail change the current open email to the last selected email before changing the mail folder.

The crash can be reproduced every time.

-- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f8b8542c940 (LWP 233601))]

Thread 25 (Thread 0x7f8ae9ffb700 (LWP 335147)):
#0  0x00007f8b9fc3ba8a in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f8b8fe4be02 in base::ConditionVariable::TimedWait (this=0x7f8ae9ffa748, max_time=...) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/synchronization/condition_variable_posix.cc:127
#2  0x00007f8b8fe4d2dd in base::WaitableEvent::TimedWait (this=0x7f8b0000b1f0, wait_delta=...) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/synchronization/waitable_event_posix.cc:213
#3  0x00007f8b8feceea8 in base::internal::WorkerThread::Delegate::WaitForWork (this=0x7f8b00001000, wake_up_event=0x7f8b0000b1f0) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/task/thread_pool/worker_thread.cc:35
#4  0x00007f8b8fed043e in base::internal::WorkerThread::RunWorker (this=0x7f8b0000b190) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/task/thread_pool/worker_thread.cc:297
#5  0x00007f8b8fecff37 in base::internal::WorkerThread::RunPooledWorker (this=0x7f8b0000b190) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/task/thread_pool/worker_thread.cc:223
#6  0x00007f8b8fecfef8 in base::internal::WorkerThread::ThreadMain (this=0x7f8b0000b190) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/task/thread_pool/worker_thread.cc:202
#7  0x00007f8b8fe52a01 in base::(anonymous namespace)::ThreadFunc (params=0x7f8b0000b2d0) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/threading/platform_thread_posix.cc:81
#8  0x00007f8b9fc34f77 in start_thread () from /lib64/libpthread.so.0
#9  0x00007f8ba0b400df in clone () from /lib64/libc.so.6

Thread 24 (Thread 0x7f8aea7fc700 (LWP 334973)):
#0  0x00007f8b9fc3ba8a in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f8ba0f8c168 in QWaitCondition::wait(QMutex*, QDeadlineTimer) () from /usr/lib64/libQt5Core.so.5
#2  0x00007f8ba0f893a0 in QThreadPoolThread::run() () from /usr/lib64/libQt5Core.so.5
#3  0x00007f8ba0f85e6c in QThreadPrivate::start(void*) () from /usr/lib64/libQt5Core.so.5
#4  0x00007f8b9fc34f77 in start_thread () from /lib64/libpthread.so.0
#5  0x00007f8ba0b400df in clone () from /lib64/libc.so.6

Thread 23 (Thread 0x7f8aebfff700 (LWP 334972)):
#0  0x00007f8b9fc3ba8a in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f8ba0f8c168 in QWaitCondition::wait(QMutex*, QDeadlineTimer) () from /usr/lib64/libQt5Core.so.5
#2  0x00007f8ba0f893a0 in QThreadPoolThread::run() () from /usr/lib64/libQt5Core.so.5
#3  0x00007f8ba0f85e6c in QThreadPrivate::start(void*) () from /usr/lib64/libQt5Core.so.5
#4  0x00007f8b9fc34f77 in start_thread () from /lib64/libpthread.so.0
#5  0x00007f8ba0b400df in clone () from /lib64/libc.so.6

Thread 22 (Thread 0x7f8b277fe700 (LWP 334971)):
#0  0x00007f8b9fc3ba8a in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f8ba0f8c168 in QWaitCondition::wait(QMutex*, QDeadlineTimer) () from /usr/lib64/libQt5Core.so.5
#2  0x00007f8ba0f893a0 in QThreadPoolThread::run() () from /usr/lib64/libQt5Core.so.5
#3  0x00007f8ba0f85e6c in QThreadPrivate::start(void*) () from /usr/lib64/libQt5Core.so.5
#4  0x00007f8b9fc34f77 in start_thread () from /lib64/libpthread.so.0
#5  0x00007f8ba0b400df in clone () from /lib64/libc.so.6

Thread 21 (Thread 0x7f8b27fff700 (LWP 334970)):
#0  0x00007f8b9fc3ba8a in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f8ba0f8c168 in QWaitCondition::wait(QMutex*, QDeadlineTimer) () from /usr/lib64/libQt5Core.so.5
#2  0x00007f8ba0f893a0 in QThreadPoolThread::run() () from /usr/lib64/libQt5Core.so.5
#3  0x00007f8ba0f85e6c in QThreadPrivate::start(void*) () from /usr/lib64/libQt5Core.so.5
#4  0x00007f8b9fc34f77 in start_thread () from /lib64/libpthread.so.0
#5  0x00007f8ba0b400df in clone () from /lib64/libc.so.6

Thread 20 (Thread 0x7f8b0affd700 (LWP 334527)):
#0  0x00007f8b9fc3ba8a in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f8b8fe4be02 in base::ConditionVariable::TimedWait (this=0x7f8b0affc748, max_time=...) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/synchronization/condition_variable_posix.cc:127
#2  0x00007f8b8fe4d2dd in base::WaitableEvent::TimedWait (this=0x7f8b6c003e60, wait_delta=...) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/synchronization/waitable_event_posix.cc:213
#3  0x00007f8b8feceea8 in base::internal::WorkerThread::Delegate::WaitForWork (this=0x7f8b6c003510, wake_up_event=0x7f8b6c003e60) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/task/thread_pool/worker_thread.cc:35
#4  0x00007f8b8fed06db in base::internal::WorkerThread::RunWorker (this=0x7f8b6c003e00) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/task/thread_pool/worker_thread.cc:316
#5  0x00007f8b8fecff37 in base::internal::WorkerThread::RunPooledWorker (this=0x7f8b6c003e00) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/task/thread_pool/worker_thread.cc:223
#6  0x00007f8b8fecfef8 in base::internal::WorkerThread::ThreadMain (this=0x7f8b6c003e00) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/task/thread_pool/worker_thread.cc:202
#7  0x00007f8b8fe52a01 in base::(anonymous namespace)::ThreadFunc (params=0x7f8b60004760) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/threading/platform_thread_posix.cc:81
#8  0x00007f8b9fc34f77 in start_thread () from /lib64/libpthread.so.0
#9  0x00007f8ba0b400df in clone () from /lib64/libc.so.6

Thread 19 (Thread 0x7f8b3cbf9700 (LWP 334336)):
#0  0x00007f8b9fc3ba8a in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f8b8fe4be02 in base::ConditionVariable::TimedWait (this=0x7f8b3cbf8748, max_time=...) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/synchronization/condition_variable_posix.cc:127
#2  0x00007f8b8fe4d2dd in base::WaitableEvent::TimedWait (this=0x7f8b000015d0, wait_delta=...) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/synchronization/waitable_event_posix.cc:213
#3  0x00007f8b8feceea8 in base::internal::WorkerThread::Delegate::WaitForWork (this=0x7f8b00002b30, wake_up_event=0x7f8b000015d0) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/task/thread_pool/worker_thread.cc:35
#4  0x00007f8b8fed06db in base::internal::WorkerThread::RunWorker (this=0x7f8b00001570) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/task/thread_pool/worker_thread.cc:316
#5  0x00007f8b8fecff37 in base::internal::WorkerThread::RunPooledWorker (this=0x7f8b00001570) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/task/thread_pool/worker_thread.cc:223
#6  0x00007f8b8fecfef8 in base::internal::WorkerThread::ThreadMain (this=0x7f8b00001570) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/task/thread_pool/worker_thread.cc:202
#7  0x00007f8b8fe52a01 in base::(anonymous namespace)::ThreadFunc (params=0x7f8b0000b0c0) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/threading/platform_thread_posix.cc:81
#8  0x00007f8b9fc34f77 in start_thread () from /lib64/libpthread.so.0
#9  0x00007f8ba0b400df in clone () from /lib64/libc.so.6

Thread 18 (Thread 0x7f8aeb7fe700 (LWP 333748)):
#0  0x00007f8b9fc3ba8a in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f8b8fe4be02 in base::ConditionVariable::TimedWait (this=0x7f8aeb7fd748, max_time=...) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/synchronization/condition_variable_posix.cc:127
#2  0x00007f8b8fe4d2dd in base::WaitableEvent::TimedWait (this=0x7f8b6c0039a0, wait_delta=...) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/synchronization/waitable_event_posix.cc:213
#3  0x00007f8b8feceea8 in base::internal::WorkerThread::Delegate::WaitForWork (this=0x7f8b6c0038b0, wake_up_event=0x7f8b6c0039a0) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/task/thread_pool/worker_thread.cc:35
#4  0x00007f8b8fed06db in base::internal::WorkerThread::RunWorker (this=0x7f8b6c003940) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/task/thread_pool/worker_thread.cc:316
#5  0x00007f8b8fecff37 in base::internal::WorkerThread::RunPooledWorker (this=0x7f8b6c003940) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/task/thread_pool/worker_thread.cc:223
#6  0x00007f8b8fecfef8 in base::internal::WorkerThread::ThreadMain (this=0x7f8b6c003940) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/task/thread_pool/worker_thread.cc:202
#7  0x00007f8b8fe52a01 in base::(anonymous namespace)::ThreadFunc (params=0x7f8b5801b610) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/threading/platform_thread_posix.cc:81
#8  0x00007f8b9fc34f77 in start_thread () from /lib64/libpthread.so.0
#9  0x00007f8ba0b400df in clone () from /lib64/libc.so.6

Thread 17 (Thread 0x7f8af143c700 (LWP 233972)):
#0  0x00007f8b9fc3b775 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f8b8fe4ba79 in base::ConditionVariable::Wait (this=0x7f8af143b558) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/synchronization/condition_variable_posix.cc:75
#2  0x00007f8b8fe4d2b7 in base::WaitableEvent::TimedWait (this=0x55d10c90b8d0, wait_delta=...) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/synchronization/waitable_event_posix.cc:211
#3  0x00007f8b8fe4cf09 in base::WaitableEvent::Wait (this=0x55d10c90b8d0) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/synchronization/waitable_event_posix.cc:157
#4  0x00007f8b8fecee8d in base::internal::WorkerThread::Delegate::WaitForWork (this=0x55d10c90b710, wake_up_event=0x55d10c90b8d0) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/task/thread_pool/worker_thread.cc:33
#5  0x00007f8b8fed06db in base::internal::WorkerThread::RunWorker (this=0x55d10c90b870) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/task/thread_pool/worker_thread.cc:316
#6  0x00007f8b8fecff93 in base::internal::WorkerThread::RunSharedWorker (this=0x55d10c90b870) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/task/thread_pool/worker_thread.cc:235
#7  0x00007f8b8fecff06 in base::internal::WorkerThread::ThreadMain (this=0x55d10c90b870) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/task/thread_pool/worker_thread.cc:205
#8  0x00007f8b8fe52a01 in base::(anonymous namespace)::ThreadFunc (params=0x7f8b64062a30) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/threading/platform_thread_posix.cc:81
#9  0x00007f8b9fc34f77 in start_thread () from /lib64/libpthread.so.0
#10 0x00007f8ba0b400df in clone () from /lib64/libc.so.6

Thread 16 (Thread 0x7f8af2a9d700 (LWP 233967)):
#0  0x00007f8b9f284a29 in g_mutex_lock () from /usr/lib64/libglib-2.0.so.0
#1  0x00007f8b9f238ddf in g_main_context_check () from /usr/lib64/libglib-2.0.so.0
#2  0x00007f8b9f2394d2 in g_main_context_iterate.isra () from /usr/lib64/libglib-2.0.so.0
#3  0x00007f8b9f23964f in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#4  0x00007f8ba11ab54b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#5  0x00007f8ba114e09b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#6  0x00007f8ba0f84db8 in QThread::exec() () from /usr/lib64/libQt5Core.so.5
#7  0x00007f8ba0f85e6c in QThreadPrivate::start(void*) () from /usr/lib64/libQt5Core.so.5
#8  0x00007f8b9fc34f77 in start_thread () from /lib64/libpthread.so.0
#9  0x00007f8ba0b400df in clone () from /lib64/libc.so.6

Thread 15 (Thread 0x7f8b0a7fc700 (LWP 233658)):
#0  0x00007f8ba0b3103c in read () from /lib64/libc.so.6
#1  0x00007f8b9f28064f in g_wakeup_acknowledge () from /usr/lib64/libglib-2.0.so.0
#2  0x00007f8b9f23908e in g_main_context_check () from /usr/lib64/libglib-2.0.so.0
#3  0x00007f8b9f2394d2 in g_main_context_iterate.isra () from /usr/lib64/libglib-2.0.so.0
#4  0x00007f8b9f23964f in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#5  0x00007f8ba11ab54b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#6  0x00007f8ba114e09b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#7  0x00007f8ba0f84db8 in QThread::exec() () from /usr/lib64/libQt5Core.so.5
#8  0x00007f8ba0f85e6c in QThreadPrivate::start(void*) () from /usr/lib64/libQt5Core.so.5
#9  0x00007f8b9fc34f77 in start_thread () from /lib64/libpthread.so.0
#10 0x00007f8ba0b400df in clone () from /lib64/libc.so.6

Thread 14 (Thread 0x7f8b0b7fe700 (LWP 233654)):
#0  0x00007f8ba0b3103c in read () from /lib64/libc.so.6
#1  0x00007f8b9f28064f in g_wakeup_acknowledge () from /usr/lib64/libglib-2.0.so.0
#2  0x00007f8b9f23908e in g_main_context_check () from /usr/lib64/libglib-2.0.so.0
#3  0x00007f8b9f2394d2 in g_main_context_iterate.isra () from /usr/lib64/libglib-2.0.so.0
#4  0x00007f8b9f23964f in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#5  0x00007f8ba11ab54b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#6  0x00007f8ba114e09b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#7  0x00007f8ba0f84db8 in QThread::exec() () from /usr/lib64/libQt5Core.so.5
#8  0x00007f8ba0f85e6c in QThreadPrivate::start(void*) () from /usr/lib64/libQt5Core.so.5
#9  0x00007f8b9fc34f77 in start_thread () from /lib64/libpthread.so.0
#10 0x00007f8ba0b400df in clone () from /lib64/libc.so.6

Thread 13 (Thread 0x7f8b0bfff700 (LWP 233653)):
#0  0x00007f8ba0b3103c in read () from /lib64/libc.so.6
#1  0x00007f8b9f28064f in g_wakeup_acknowledge () from /usr/lib64/libglib-2.0.so.0
#2  0x00007f8b9f23908e in g_main_context_check () from /usr/lib64/libglib-2.0.so.0
#3  0x00007f8b9f2394d2 in g_main_context_iterate.isra () from /usr/lib64/libglib-2.0.so.0
#4  0x00007f8b9f23964f in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#5  0x00007f8ba11ab54b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#6  0x00007f8ba114e09b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#7  0x00007f8ba0f84db8 in QThread::exec() () from /usr/lib64/libQt5Core.so.5
#8  0x00007f8ba0f85e6c in QThreadPrivate::start(void*) () from /usr/lib64/libQt5Core.so.5
#9  0x00007f8b9fc34f77 in start_thread () from /lib64/libpthread.so.0
#10 0x00007f8ba0b400df in clone () from /lib64/libc.so.6

Thread 12 (Thread 0x7f8b24ba7700 (LWP 233652)):
#0  0x00007f8ba0f8646f in QMutex::unlock() () from /usr/lib64/libQt5Core.so.5
#1  0x00007f8ba11ab3fb in postEventSourcePrepare(_GSource*, int*) () from /usr/lib64/libQt5Core.so.5
#2  0x00007f8b9f238ace in g_main_context_prepare () from /usr/lib64/libglib-2.0.so.0
#3  0x00007f8b9f239456 in g_main_context_iterate.isra () from /usr/lib64/libglib-2.0.so.0
#4  0x00007f8b9f23964f in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#5  0x00007f8ba11ab54b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#6  0x00007f8ba114e09b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#7  0x00007f8ba0f84db8 in QThread::exec() () from /usr/lib64/libQt5Core.so.5
#8  0x00007f8ba0f85e6c in QThreadPrivate::start(void*) () from /usr/lib64/libQt5Core.so.5
#9  0x00007f8b9fc34f77 in start_thread () from /lib64/libpthread.so.0
#10 0x00007f8ba0b400df in clone () from /lib64/libc.so.6

Thread 11 (Thread 0x7f8b26ffd700 (LWP 233644)):
#0  0x00007f8b9fc3b775 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f8b8fe4ba79 in base::ConditionVariable::Wait (this=0x7f8b26ffc138) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/synchronization/condition_variable_posix.cc:75
#2  0x00007f8b8fe4d2b7 in base::WaitableEvent::TimedWait (this=0x7f8b0c000bd0, wait_delta=...) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/synchronization/waitable_event_posix.cc:211
#3  0x00007f8b8fe4cf09 in base::WaitableEvent::Wait (this=0x7f8b0c000bd0) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/synchronization/waitable_event_posix.cc:157
#4  0x00007f8b8fcb98ae in base::MessagePumpDefault::Run (this=0x7f8b0c000bc0, delegate=0x7f8b30005608) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/message_loop/message_pump_default.cc:55
#5  0x00007f8b8fd8ea97 in base::sequence_manager::internal::ThreadControllerWithMessagePumpImpl::Run (this=0x7f8b30005600, application_tasks_allowed=true, timeout=...) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/task/sequence_manager/thread_controller_with_message_pump_impl.cc:463
#6  0x00007f8b8fd0fa1d in base::RunLoop::Run (this=0x7f8b26ffca80) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/run_loop.cc:156
#7  0x00007f8b8fdb7b33 in base::Thread::Run (this=0x7f8b30006260, run_loop=0x7f8b26ffca80) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/threading/thread.cc:305
#8  0x00007f8b8fdb8146 in base::Thread::ThreadMain (this=0x7f8b30006260) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/threading/thread.cc:376
#9  0x00007f8b8fe52a01 in base::(anonymous namespace)::ThreadFunc (params=0x7f8b300076b0) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/threading/platform_thread_posix.cc:81
#10 0x00007f8b9fc34f77 in start_thread () from /lib64/libpthread.so.0
#11 0x00007f8ba0b400df in clone () from /lib64/libc.so.6

Thread 10 (Thread 0x7f8b3dbfb700 (LWP 233626)):
#0  0x00007f8b9fc3afa5 in pthread_rwlock_unlock () from /lib64/libpthread.so.0
#1  0x00007f8ba0a76ff9 in __dcigettext () from /lib64/libc.so.6
#2  0x00007f8ba0acfc2e in strerror_r () from /lib64/libc.so.6
#3  0x00007f8ba0acfb4f in strerror () from /lib64/libc.so.6
#4  0x00007f8b85d4853a in event_warn () from /usr/lib64/libevent-2.1.so.7
#5  0x00007f8b85d49f88 in epoll_dispatch () from /usr/lib64/libevent-2.1.so.7
#6  0x00007f8b85d40068 in event_base_loop () from /usr/lib64/libevent-2.1.so.7
#7  0x00007f8b8fe74229 in base::MessagePumpLibevent::Run (this=0x7f8b2c001d10, delegate=0x7f8b64078118) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/message_loop/message_pump_libevent.cc:213
#8  0x00007f8b8fd8ea97 in base::sequence_manager::internal::ThreadControllerWithMessagePumpImpl::Run (this=0x7f8b64078110, application_tasks_allowed=true, timeout=...) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/task/sequence_manager/thread_controller_with_message_pump_impl.cc:463
#9  0x00007f8b8fd0fa1d in base::RunLoop::Run (this=0x7f8b3dbfaa80) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/run_loop.cc:156
#10 0x00007f8b8fdb7b33 in base::Thread::Run (this=0x7f8b9e7bb188 <(anonymous namespace)::g_internal_cache_thread+8>, run_loop=0x7f8b3dbfaa80) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/threading/thread.cc:305
#11 0x00007f8b8fdb8146 in base::Thread::ThreadMain (this=0x7f8b9e7bb188 <(anonymous namespace)::g_internal_cache_thread+8>) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/threading/thread.cc:376
#12 0x00007f8b8fe52a01 in base::(anonymous namespace)::ThreadFunc (params=0x7f8b64079f90) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/threading/platform_thread_posix.cc:81
#13 0x00007f8b9fc34f77 in start_thread () from /lib64/libpthread.so.0
#14 0x00007f8ba0b400df in clone () from /lib64/libc.so.6

Thread 9 (Thread 0x7f8b3e3fc700 (LWP 233624)):
#0  0x00007f8b9fc3b775 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f8b8fe4ba79 in base::ConditionVariable::Wait (this=0x7f8b3e3fb558) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/synchronization/condition_variable_posix.cc:75
#2  0x00007f8b8fe4d2b7 in base::WaitableEvent::TimedWait (this=0x7f8b64062970, wait_delta=...) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/synchronization/waitable_event_posix.cc:211
#3  0x00007f8b8fe4cf09 in base::WaitableEvent::Wait (this=0x7f8b64062970) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/synchronization/waitable_event_posix.cc:157
#4  0x00007f8b8fecee8d in base::internal::WorkerThread::Delegate::WaitForWork (this=0x7f8b64061e80, wake_up_event=0x7f8b64062970) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/task/thread_pool/worker_thread.cc:33
#5  0x00007f8b8fed06db in base::internal::WorkerThread::RunWorker (this=0x7f8b64062910) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/task/thread_pool/worker_thread.cc:316
#6  0x00007f8b8fecffef in base::internal::WorkerThread::RunDedicatedWorker (this=0x7f8b64062910) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/task/thread_pool/worker_thread.cc:247
#7  0x00007f8b8fecff14 in base::internal::WorkerThread::ThreadMain (this=0x7f8b64062910) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/task/thread_pool/worker_thread.cc:208
#8  0x00007f8b8fe52a01 in base::(anonymous namespace)::ThreadFunc (params=0x7f8b64062a50) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/threading/platform_thread_posix.cc:81
#9  0x00007f8b9fc34f77 in start_thread () from /lib64/libpthread.so.0
#10 0x00007f8ba0b400df in clone () from /lib64/libc.so.6

Thread 8 (Thread 0x7f8b3effd700 (LWP 233623)):
#0  0x00007f8ba0ac6936 in __lll_lock_wait_private () from /lib64/libc.so.6
#1  0x00007f8ba0aae92e in buffered_vfprintf () from /lib64/libc.so.6
#2  0x00007f8ba0aab7b4 in __vfprintf_internal () from /lib64/libc.so.6
#3  0x00007f8ba0b4e2a7 in __fprintf_chk () from /lib64/libc.so.6
#4  0x00007f8b85d4836e in event_logv_ () from /usr/lib64/libevent-2.1.so.7
#5  0x00007f8b85d4854d in event_warn () from /usr/lib64/libevent-2.1.so.7
#6  0x00007f8b85d49f88 in epoll_dispatch () from /usr/lib64/libevent-2.1.so.7
#7  0x00007f8b85d40068 in event_base_loop () from /usr/lib64/libevent-2.1.so.7
#8  0x00007f8b8fe742c0 in base::MessagePumpLibevent::Run (this=0x7f8b34001d10, delegate=0x7f8b30002228) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/message_loop/message_pump_libevent.cc:232
#9  0x00007f8b8fd8ea97 in base::sequence_manager::internal::ThreadControllerWithMessagePumpImpl::Run (this=0x7f8b30002220, application_tasks_allowed=true, timeout=...) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/task/sequence_manager/thread_controller_with_message_pump_impl.cc:463
#10 0x00007f8b8fd0fa1d in base::RunLoop::Run (this=0x7f8b3effca80) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/run_loop.cc:156
#11 0x00007f8b8fdb7b33 in base::Thread::Run (this=0x7f8b30001ea0, run_loop=0x7f8b3effca80) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/threading/thread.cc:305
#12 0x00007f8b8fdb8146 in base::Thread::ThreadMain (this=0x7f8b30001ea0) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/threading/thread.cc:376
#13 0x00007f8b8fe52a01 in base::(anonymous namespace)::ThreadFunc (params=0x7f8b30004500) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/threading/platform_thread_posix.cc:81
#14 0x00007f8b9fc34f77 in start_thread () from /lib64/libpthread.so.0
#15 0x00007f8ba0b400df in clone () from /lib64/libc.so.6

Thread 7 (Thread 0x7f8b3f7fe700 (LWP 233622)):
#0  0x00007f8b9fc3ba8a in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f8b8fe4be02 in base::ConditionVariable::TimedWait (this=0x7f8b3f7fd328, max_time=...) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/synchronization/condition_variable_posix.cc:127
#2  0x00007f8b8fe4d2dd in base::WaitableEvent::TimedWait (this=0x7f8b30000bd0, wait_delta=...) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/synchronization/waitable_event_posix.cc:213
#3  0x00007f8b8fcb98da in base::MessagePumpDefault::Run (this=0x7f8b30000bc0, delegate=0x7f8b64033a48) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/message_loop/message_pump_default.cc:57
#4  0x00007f8b8fd8ea97 in base::sequence_manager::internal::ThreadControllerWithMessagePumpImpl::Run (this=0x7f8b64033a40, application_tasks_allowed=true, timeout=...) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/task/sequence_manager/thread_controller_with_message_pump_impl.cc:463
#5  0x00007f8b8fd0fa1d in base::RunLoop::Run (this=0x7f8b3f7fda80) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/run_loop.cc:156
#6  0x00007f8b8fdb7b33 in base::Thread::Run (this=0x7f8b640337b0, run_loop=0x7f8b3f7fda80) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/threading/thread.cc:305
#7  0x00007f8b8fdb8146 in base::Thread::ThreadMain (this=0x7f8b640337b0) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/threading/thread.cc:376
#8  0x00007f8b8fe52a01 in base::(anonymous namespace)::ThreadFunc (params=0x7f8b64035cd0) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/threading/platform_thread_posix.cc:81
#9  0x00007f8b9fc34f77 in start_thread () from /lib64/libpthread.so.0
#10 0x00007f8ba0b400df in clone () from /lib64/libc.so.6

Thread 6 (Thread 0x7f8b3ffff700 (LWP 233621)):
#0  0x00007f8b9fc3b775 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f8b8fe4ba79 in base::ConditionVariable::Wait (this=0x7f8b3fffe138) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/synchronization/condition_variable_posix.cc:75
#2  0x00007f8b8fe4d2b7 in base::WaitableEvent::TimedWait (this=0x7f8b38000bd0, wait_delta=...) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/synchronization/waitable_event_posix.cc:211
#3  0x00007f8b8fe4cf09 in base::WaitableEvent::Wait (this=0x7f8b38000bd0) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/synchronization/waitable_event_posix.cc:157
#4  0x00007f8b8fcb98ae in base::MessagePumpDefault::Run (this=0x7f8b38000bc0, delegate=0x55d10c0a71e8) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/message_loop/message_pump_default.cc:55
#5  0x00007f8b8fd8ea97 in base::sequence_manager::internal::ThreadControllerWithMessagePumpImpl::Run (this=0x55d10c0a71e0, application_tasks_allowed=true, timeout=...) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/task/sequence_manager/thread_controller_with_message_pump_impl.cc:463
#6  0x00007f8b8fd0fa1d in base::RunLoop::Run (this=0x7f8b3fffea80) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/run_loop.cc:156
#7  0x00007f8b8fdb7b33 in base::Thread::Run (this=0x55d10c063918, run_loop=0x7f8b3fffea80) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/threading/thread.cc:305
#8  0x00007f8b8fdb8146 in base::Thread::ThreadMain (this=0x55d10c063918) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/threading/thread.cc:376
#9  0x00007f8b8fe52a01 in base::(anonymous namespace)::ThreadFunc (params=0x55d10be9d360) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/threading/platform_thread_posix.cc:81
#10 0x00007f8b9fc34f77 in start_thread () from /lib64/libpthread.so.0
#11 0x00007f8ba0b400df in clone () from /lib64/libc.so.6

Thread 5 (Thread 0x7f8b5cff9700 (LWP 233620)):
#0  0x00007f8b9fc3b775 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f8b8fe4ba79 in base::ConditionVariable::Wait (this=0x55d10bdb2478) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/synchronization/condition_variable_posix.cc:75
#2  0x00007f8b957507d9 in cc::SingleThreadTaskGraphRunner::Run (this=0x55d10bdb23c0) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/cc/raster/single_thread_task_graph_runner.cc:123
#3  0x00007f8b8fdb35cd in base::DelegateSimpleThread::Run (this=0x55d10be987c0) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/threading/simple_thread.cc:98
#4  0x00007f8b8fdb331c in base::SimpleThread::ThreadMain (this=0x55d10be987c0) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/threading/simple_thread.cc:75
#5  0x00007f8b8fe52a01 in base::(anonymous namespace)::ThreadFunc (params=0x55d10be95cf0) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/threading/platform_thread_posix.cc:81
#6  0x00007f8b9fc34f77 in start_thread () from /lib64/libpthread.so.0
#7  0x00007f8ba0b400df in clone () from /lib64/libc.so.6

Thread 4 (Thread 0x7f8b74fc9700 (LWP 233613)):
#0  0x00007f8ba0ac6936 in __lll_lock_wait_private () from /lib64/libc.so.6
#1  0x00007f8ba0aae92e in buffered_vfprintf () from /lib64/libc.so.6
#2  0x00007f8ba0aab7b4 in __vfprintf_internal () from /lib64/libc.so.6
#3  0x00007f8ba0b4e2a7 in __fprintf_chk () from /lib64/libc.so.6
#4  0x00007f8b85d4836e in event_logv_ () from /usr/lib64/libevent-2.1.so.7
#5  0x00007f8b85d4854d in event_warn () from /usr/lib64/libevent-2.1.so.7
#6  0x00007f8b85d49f88 in epoll_dispatch () from /usr/lib64/libevent-2.1.so.7
#7  0x00007f8b85d40068 in event_base_loop () from /usr/lib64/libevent-2.1.so.7
#8  0x00007f8b8fe74229 in base::MessagePumpLibevent::Run (this=0x7f8b64001cd0, delegate=0x55d10b6c8638) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/message_loop/message_pump_libevent.cc:213
#9  0x00007f8b8fd8ea97 in base::sequence_manager::internal::ThreadControllerWithMessagePumpImpl::Run (this=0x55d10b6c8630, application_tasks_allowed=true, timeout=...) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/task/sequence_manager/thread_controller_with_message_pump_impl.cc:463
#10 0x00007f8b8fd0fa1d in base::RunLoop::Run (this=0x7f8b74fc8a80) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/run_loop.cc:156
#11 0x00007f8b8fdb7b33 in base::Thread::Run (this=0x55d10c09ae00, run_loop=0x7f8b74fc8a80) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/threading/thread.cc:305
#12 0x00007f8b938be508 in content::BrowserProcessSubThread::IOThreadRun (this=0x55d10c09ae00, run_loop=0x7f8b74fc8a80) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/content/browser/browser_process_sub_thread.cc:134
#13 0x00007f8b938be217 in content::BrowserProcessSubThread::Run (this=0x55d10c09ae00, run_loop=0x7f8b74fc8a80) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/content/browser/browser_process_sub_thread.cc:95
#14 0x00007f8b8fdb8146 in base::Thread::ThreadMain (this=0x55d10c09ae00) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/threading/thread.cc:376
#15 0x00007f8b8fe52a01 in base::(anonymous namespace)::ThreadFunc (params=0x55d10c0919c0) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/threading/platform_thread_posix.cc:81
#16 0x00007f8b9fc34f77 in start_thread () from /lib64/libpthread.so.0
#17 0x00007f8ba0b400df in clone () from /lib64/libc.so.6

Thread 3 (Thread 0x7f8b75fcb700 (LWP 233611)):
#0  std::__uniq_ptr_impl<base::sequence_manager::internal::ThreadController, std::default_delete<base::sequence_manager::internal::ThreadController> >::_M_ptr (this=0x55d10c08ec80) at /usr/lib/gcc/x86_64-pc-linux-gnu/9.3.0/include/g++-v9/bits/unique_ptr.h:154
#1  0x00007f8b8fd65c10 in std::unique_ptr<base::sequence_manager::internal::ThreadController, std::default_delete<base::sequence_manager::internal::ThreadController> >::get (this=0x55d10c08ec80) at /usr/lib/gcc/x86_64-pc-linux-gnu/9.3.0/include/g++-v9/bits/unique_ptr.h:361
#2  0x00007f8b8fd621fe in std::unique_ptr<base::sequence_manager::internal::ThreadController, std::default_delete<base::sequence_manager::internal::ThreadController> >::operator-> (this=0x55d10c08ec80) at /usr/lib/gcc/x86_64-pc-linux-gnu/9.3.0/include/g++-v9/bits/unique_ptr.h:355
#3  0x00007f8b8fd5cbeb in base::sequence_manager::internal::SequenceManagerImpl::OnSystemIdle (this=0x55d10c08ec50) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/task/sequence_manager/sequence_manager_impl.cc:734
#4  0x00007f8b8fd8e679 in base::sequence_manager::internal::ThreadControllerWithMessagePumpImpl::DoIdleWork (this=0x55d10c08e980) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/task/sequence_manager/thread_controller_with_message_pump_impl.cc:413
#5  0x00007f8b8fe7427b in base::MessagePumpLibevent::Run (this=0x7f8b6c001d10, delegate=0x55d10c08e988) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/message_loop/message_pump_libevent.cc:222
#6  0x00007f8b8fd8ea97 in base::sequence_manager::internal::ThreadControllerWithMessagePumpImpl::Run (this=0x55d10c08e980, application_tasks_allowed=true, timeout=...) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/task/sequence_manager/thread_controller_with_message_pump_impl.cc:463
#7  0x00007f8b8fd0fa1d in base::RunLoop::Run (this=0x7f8b75fcaa80) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/run_loop.cc:156
#8  0x00007f8b8fdb7b33 in base::Thread::Run (this=0x55d10bb84790, run_loop=0x7f8b75fcaa80) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/threading/thread.cc:305
#9  0x00007f8b8feb9186 in base::internal::ServiceThread::Run (this=0x55d10bb84790, run_loop=0x7f8b75fcaa80) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/task/thread_pool/service_thread.cc:61
#10 0x00007f8b8fdb8146 in base::Thread::ThreadMain (this=0x55d10bb84790) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/threading/thread.cc:376
#11 0x00007f8b8fe52a01 in base::(anonymous namespace)::ThreadFunc (params=0x55d10c090b20) at ../../../../qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/threading/platform_thread_posix.cc:81
#12 0x00007f8b9fc34f77 in start_thread () from /lib64/libpthread.so.0
#13 0x00007f8ba0b400df in clone () from /lib64/libc.so.6

Thread 2 (Thread 0x7f8b7d0ac700 (LWP 233604)):
#0  0x00007f8ba0b3565f in poll () from /lib64/libc.so.6
#1  0x00007f8b9f23952e in g_main_context_iterate.isra () from /usr/lib64/libglib-2.0.so.0
#2  0x00007f8b9f23964f in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#3  0x00007f8ba11ab54b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#4  0x00007f8ba114e09b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#5  0x00007f8ba0f84db8 in QThread::exec() () from /usr/lib64/libQt5Core.so.5
#6  0x00007f8ba052e508 in QDBusConnectionManager::run() () from /usr/lib64/libQt5DBus.so.5
#7  0x00007f8ba0f85e6c in QThreadPrivate::start(void*) () from /usr/lib64/libQt5Core.so.5
#8  0x00007f8b9fc34f77 in start_thread () from /lib64/libpthread.so.0
#9  0x00007f8ba0b400df in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7f8b8542c940 (LWP 233601)):
[KCrash Handler]
#4  0x00007f8b9ed32574 in KMime::Content::parent() const () from /usr/lib64/libKF5Mime.so.5
#5  0x00007f8b9ed3258a in KMime::Content::topLevel() const () from /usr/lib64/libKF5Mime.so.5
#6  0x00007f8b9ed33046 in KMime::Content::index() const () from /usr/lib64/libKF5Mime.so.5
#7  0x00007f8b25135355 in MimeTreeParser::NodeHelper::persistentIndex(KMime::Content const*) const () from /usr/lib64/libKF5MimeTreeParser.so.5
#8  0x00007f8b251357b8 in MimeTreeParser::NodeHelper::tempFileUrlFromNode(KMime::Content const*) () from /usr/lib64/libKF5MimeTreeParser.so.5
#9  0x00007f8b25138a4a in MimeTreeParser::NodeHelper::writeNodeToTempFile(KMime::Content*) () from /usr/lib64/libKF5MimeTreeParser.so.5
#10 0x00007f8b25455317 in MessageViewer::ViewerPrivate::attachmentOpenWith(KMime::Content*, QExplicitlySharedDataPointer<KService> const&) () from /usr/lib64/libKF5MessageViewer.so.5
#11 0x00007f8b25458a4d in MessageViewer::ViewerPrivate::openAttachment(KMime::Content*, QUrl const&) () from /usr/lib64/libKF5MessageViewer.so.5
#12 0x00007f8b254628f2 in MessageViewer::AttachmentURLHandler::handleClick(QUrl const&, MessageViewer::ViewerPrivate*) const () from /usr/lib64/libKF5MessageViewer.so.5
#13 0x00007f8b25461a38 in MessageViewer::URLHandlerManager::handleClick(QUrl const&, MessageViewer::ViewerPrivate*) const () from /usr/lib64/libKF5MessageViewer.so.5
#14 0x00007f8b25446b71 in MessageViewer::ViewerPrivate::slotUrlOpen(QUrl const&) () from /usr/lib64/libKF5MessageViewer.so.5
#15 0x00007f8ba117e299 in QObject::event(QEvent*) () from /usr/lib64/libQt5Core.so.5
#16 0x00007f8ba1bf2a6f in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib64/libQt5Widgets.so.5
#17 0x00007f8ba1bfafc8 in QApplication::notify(QObject*, QEvent*) () from /usr/lib64/libQt5Widgets.so.5
#18 0x00007f8ba114f797 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib64/libQt5Core.so.5
#19 0x00007f8ba115264a in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib64/libQt5Core.so.5
#20 0x00007f8ba11abae3 in postEventSourceDispatch(_GSource*, int (*)(void*), void*) () from /usr/lib64/libQt5Core.so.5
#21 0x00007f8b9f239337 in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0
#22 0x00007f8b9f2395c0 in g_main_context_iterate.isra () from /usr/lib64/libglib-2.0.so.0
#23 0x00007f8b9f23964f in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#24 0x00007f8ba11ab52d in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#25 0x00007f8ba114e09b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#26 0x00007f8ba1156c00 in QCoreApplication::exec() () from /usr/lib64/libQt5Core.so.5
#27 0x000055d10a1c677a in main ()
[Inferior 1 (process 233601) detached]

Possible duplicates by query: bug 406142, bug 405220, bug 388641, bug 373129, bug 359935.

Reported using DrKonqi
Comment 1 Janet Blackquill 2020-08-21 17:37:20 UTC 
Since this is only reproducible with Kvantum as the QStyle, this is most likely an issue with Kvantum.

You can file a bug report on their issue tracker at https://github.com/tsujan/Kvantum/issues/new.

Please reopen this bug if it turns out otherwise.
Comment 2 Christoph Feck 2020-08-22 10:38:57 UTC 
The backtrace indicates it is a problem in KMime or in MessageViewer; reopening.
Comment 3 Chris 2020-08-28 20:31:19 UTC 
I also use Kvantum and can confirm the same issue. However, it happens to me even if I open Kmail without Kontact. Should we therefore move the issue to the kmail buglist?
Comment 4 Chris 2020-08-28 20:41:11 UTC 
(In reply to Chris from comment #3)
> I also use Kvantum and can confirm the same issue. However, it happens to me
> even if I open Kmail without Kontact. Should we therefore move the issue to
> the kmail buglist?

My apologies, I see you already did migrate the issue. Here is the link for anyone interested: https://bugs.kde.org/show_bug.cgi?id=425604
Comment 5 Walker Luiz de Freitas 2020-11-06 13:03:04 UTC 
Created attachment 133083 [details]
New crash information added by DrKonqi

kontact (5.15.2 (20.08.2)) using Qt 5.15.0

- What I was doing when the application crashed: With Kontact opened, when I go to save or open the PDF attached, the application it's closed and the system show a error Dr. Konq.

- Unusual behavior I noticed: Before, I used the mail manager Thunderbird, and now I am using the Kontact with KMail. The error come with frequency when I use the Kontact (open or save attachment).

-- Backtrace (Reduced):
#4  0x00007f17f00b6168 in KMime::Content::parent (this=this@entry=0x55a878fee010) at ./src/kmime_content.cpp:831
#5  0x00007f17f00b617e in KMime::Content::topLevel (this=this@entry=0x55a878fee010) at ./src/kmime_content.cpp:837
#6  0x00007f17f00b6e4a in KMime::Content::index (this=this@entry=0x55a878fee010) at ./src/kmime_content.cpp:848
#7  0x00007f17ae7aa009 in MimeTreeParser::NodeHelper::persistentIndex (this=this@entry=0x55a877d88940, node=node@entry=0x55a878fee010) at ./mimetreeparser/src/nodehelper.cpp:676
#8  0x00007f17ae7aa46e in MimeTreeParser::NodeHelper::tempFileUrlFromNode (this=this@entry=0x55a877d88940, node=node@entry=0x55a878fee010) at ./mimetreeparser/src/nodehelper.cpp:277