Created attachment 114598 [details] gdb output with backtrace of akregator Recently I am experiencing an issue with akregator where often (1 out of 5 times, very very roughly) closing a tab causes the program to crash. By starting akregator from command line it prints a stacktrace when it crashes: Received signal 11 SEGV_ACCERR 0000011bdf80 #0 0x7f422eff134f <unknown> #1 0x7f422da14d17 <unknown> #2 0x7f422eff185e <unknown> #3 0x7f423e3504b0 <unknown> #4 0x0000011bdf80 <unknown> r8: 00007f41deffba40 r9: 00007f41deffba50 r10: 00007f41e02c838a r11: 00007f41deffb930 r12: 00007f41e003f5e0 r13: 00007f41deffba40 r14: 00000000019f9d60 r15: 00007f41e0316a20 di: 00000000019f9d60 si: 00007f41deffba30 bp: 00007f41deffbb50 bx: 00007f41e0153d30 dx: 00007f41e02f6c60 ax: 0000000001794560 cx: 00007f41deffba20 sp: 00007f41deffb9c8 ip: 00000000011bdf80 efl: 0000000000010202 cgf: 002b000000000033 erf: 0000000000000015 trp: 000000000000000e msk: 0000000000000000 cr2: 00000000011bdf80 [end of stack trace] Calling _exit(1). Core file will not be generated. I tried starting akregator with gdb and issuing the "bt" command when it supposedly crashed, I am appending the output as an attachment.
I correct myself: now akregator seems to crash every time I close a tab.
System info: KDE Plasma: 5.13.4 KDE Frameworks: 5.49.0 Qt version: 5.11.1 Akregator version: 5.9.0 The last (I hope) correction on the issue: akregator crashes every time I close the rightmost tab; akregator doesn't crash if I close any other tab that isn't the rightmost one (so it also crashes if I close the only open tab).
I'm also seeing this issue, however I'm not sure it is triggered when closing the rightmost tab. It looks more random to me.
(In reply to Gianni from comment #1) > I correct myself: now akregator seems to crash every time I close a tab. (In reply to tomas nackaerts from comment #3) > I'm also seeing this issue, however I'm not sure it is triggered when > closing the rightmost tab. It looks more random to me. the reason i thought it was more random is because closing the last tab doesnt make akregator crash immediately but only when the feed list is clicked. so a crash happens if you 1) close the rightmost tab and then 2) click on the feed list.
(In reply to tomas nackaerts from comment #4) > so a crash happens if you 1) close the rightmost tab and then 2) click on > the feed list. Yes, you are right. Now that I notice it, akregator crashes only when I'm clicking on a feed in the feed list (after I closed the rightmost tab). I confirm I am experiencing your same issue.
After installing latest packages from kde-neon today i see the same bug. however now there is a hopefully better backtrace: Application: Akregator (akregator), signal: Segmentation fault Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". [Current thread is 1 (Thread 0x7f4c9e9e1880 (LWP 18408))] Thread 27 (Thread 0x7f4bd376f700 (LWP 18634)): #0 0x00007f4c94d10ed9 in futex_reltimed_wait_cancelable (private=<optimized out>, reltime=0x7f4bd376ea80, expected=0, futex_word=0x7f4bd376ec68) at ../sysdeps/unix/sysv/linux/futex-internal.h:142 #1 __pthread_cond_wait_common (abstime=0x7f4bd376eb20, mutex=0x7f4bd376ec18, cond=0x7f4bd376ec40) at pthread_cond_wait.c:533 #2 __pthread_cond_timedwait (cond=0x7f4bd376ec40, mutex=0x7f4bd376ec18, abstime=0x7f4bd376eb20) at pthread_cond_wait.c:667 #3 0x00007f4c8b1b8837 in base::ConditionVariable::TimedWait(base::TimeDelta const&) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #4 0x00007f4c8b1bab17 in base::WaitableEvent::TimedWaitUntil(base::TimeTicks const&) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #5 0x00007f4c8b1bac02 in base::WaitableEvent::TimedWait(base::TimeDelta const&) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #6 0x00007f4c8b1bfc81 in base::internal::SchedulerWorker::Delegate::WaitForWork(base::WaitableEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #7 0x00007f4c8b1c101f in base::internal::SchedulerWorker::Thread::ThreadMain() () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #8 0x00007f4c8b1c9f11 in base::(anonymous namespace)::ThreadFunc(void*) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #9 0x00007f4c94d0a6db in start_thread (arg=0x7f4bd376f700) at pthread_create.c:463 #10 0x00007f4c9a81b88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 26 (Thread 0x7f4bd239a700 (LWP 18450)): #0 __lll_lock_wait_private () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:95 #1 0x00007f4c9a82c474 in ___fprintf_chk (fp=0x7f4c9aae78b0 <_IO_stdfile_2_lock>, flag=1, format=0x7f4c7f82f6a8 "[%s] %s\n") at fprintf_chk.c:30 #2 0x00007f4c7f8179ad in event_logv_ () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6 #3 0x00007f4c7f817b44 in event_warn () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6 #4 0x00007f4c7f81946c in ?? () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6 #5 0x00007f4c7f80f114 in event_base_loop () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6 #6 0x00007f4c8b18bc71 in base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #7 0x00007f4c8b1ac12b in base::RunLoop::Run() () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #8 0x00007f4c8b1ce52f in base::Thread::ThreadMain() () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #9 0x00007f4c8b1c9f11 in base::(anonymous namespace)::ThreadFunc(void*) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #10 0x00007f4c94d0a6db in start_thread (arg=0x7f4bd239a700) at pthread_create.c:463 #11 0x00007f4c9a81b88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 25 (Thread 0x7f4bdbfff700 (LWP 18440)): #0 0x00007f4c92a2ed79 in g_mutex_lock () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 #1 0x00007f4c929e8c8f in g_main_context_check () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 #2 0x00007f4c929e93e0 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 #3 0x00007f4c929e954c in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 #4 0x00007f4c9b149a9b in QEventDispatcherGlib::processEvents (this=0x7f4bd4000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:425 #5 0x00007f4c9b0eddea in QEventLoop::exec (this=this@entry=0x7f4bdbffed20, flags=..., flags@entry=...) at kernel/qeventloop.cpp:214 #6 0x00007f4c9af18b8a in QThread::exec (this=<optimized out>) at thread/qthread.cpp:525 #7 0x00007f4c9af23aab in QThreadPrivate::start (arg=0x55561e3f5310) at thread/qthread_unix.cpp:367 #8 0x00007f4c94d0a6db in start_thread (arg=0x7f4bdbfff700) at pthread_create.c:463 #9 0x00007f4c9a81b88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 24 (Thread 0x7f4c04ff9700 (LWP 18439)): #0 0x00007f4c574db2b4 in ?? () from /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-11.1.so #1 0x00007f4c579400d8 in pa_mainloop_dispatch () from /usr/lib/x86_64-linux-gnu/libpulse.so.0 #2 0x00007f4c579404ae in pa_mainloop_iterate () from /usr/lib/x86_64-linux-gnu/libpulse.so.0 #3 0x00007f4c57940530 in pa_mainloop_run () from /usr/lib/x86_64-linux-gnu/libpulse.so.0 #4 0x00007f4c5794e399 in ?? () from /usr/lib/x86_64-linux-gnu/libpulse.so.0 #5 0x00007f4c574eb2a8 in ?? () from /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-11.1.so #6 0x00007f4c94d0a6db in start_thread (arg=0x7f4c04ff9700) at pthread_create.c:463 #7 0x00007f4c9a81b88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 23 (Thread 0x7f4c057fa700 (LWP 18438)): #0 0x00007f4c9a80a187 in __GI___libc_write (fd=2, buf=0x7f4c057f6f90, nbytes=48) at ../sysdeps/unix/sysv/linux/write.c:27 #1 0x00007f4c9a7851bd in _IO_new_file_write (f=0x7f4c9aae6680 <_IO_2_1_stderr_>, data=0x7f4c057f6f90, n=48) at fileops.c:1203 #2 0x00007f4c9a785b2f in new_do_write (to_do=<optimized out>, data=0x7f4c057f6f90 "[warn] epoll_wait: Ongeldige bestandsdescriptor\n", fp=0x7f4c9aae6680 <_IO_2_1_stderr_>) at fileops.c:457 #3 _IO_new_file_xsputn (f=0x7f4c9aae6680 <_IO_2_1_stderr_>, data=<optimized out>, n=48) at fileops.c:1277 #4 0x00007f4c9a758707 in buffered_vfprintf (s=s@entry=0x7f4c9aae6680 <_IO_2_1_stderr_>, format=format@entry=0x7f4c7f82f6a8 "[%s] %s\n", args=args@entry=0x7f4c057f9550) at vfprintf.c:2350 #5 0x00007f4c9a755726 in _IO_vfprintf_internal (s=s@entry=0x7f4c9aae6680 <_IO_2_1_stderr_>, format=0x7f4c7f82f6a8 "[%s] %s\n", ap=ap@entry=0x7f4c057f9550) at vfprintf.c:1301 #6 0x00007f4c9a82c4c6 in ___fprintf_chk (fp=0x7f4c9aae6680 <_IO_2_1_stderr_>, flag=1, format=<optimized out>) at fprintf_chk.c:35 #7 0x00007f4c7f8179ad in event_logv_ () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6 #8 0x00007f4c7f817b44 in event_warn () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6 #9 0x00007f4c7f81946c in ?? () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6 #10 0x00007f4c7f80f114 in event_base_loop () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6 #11 0x00007f4c8b18bcc5 in base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #12 0x00007f4c8b1ac12b in base::RunLoop::Run() () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #13 0x00007f4c8b1ce52f in base::Thread::ThreadMain() () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #14 0x00007f4c8b1c9f11 in base::(anonymous namespace)::ThreadFunc(void*) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #15 0x00007f4c94d0a6db in start_thread (arg=0x7f4c057fa700) at pthread_create.c:463 #16 0x00007f4c9a81b88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 22 (Thread 0x7f4c05ffb700 (LWP 18437)): #0 0x00007f4c94d10ed9 in futex_reltimed_wait_cancelable (private=<optimized out>, reltime=0x7f4c05ffaa50, expected=0, futex_word=0x7f4c05ffac38) at ../sysdeps/unix/sysv/linux/futex-internal.h:142 #1 __pthread_cond_wait_common (abstime=0x7f4c05ffaaf0, mutex=0x7f4c05ffabe8, cond=0x7f4c05ffac10) at pthread_cond_wait.c:533 #2 __pthread_cond_timedwait (cond=0x7f4c05ffac10, mutex=0x7f4c05ffabe8, abstime=0x7f4c05ffaaf0) at pthread_cond_wait.c:667 #3 0x00007f4c8b1b8837 in base::ConditionVariable::TimedWait(base::TimeDelta const&) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #4 0x00007f4c8b1bab17 in base::WaitableEvent::TimedWaitUntil(base::TimeTicks const&) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #5 0x00007f4c8b184ee8 in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #6 0x00007f4c8b1ac12b in base::RunLoop::Run() () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #7 0x00007f4c8b1ce52f in base::Thread::ThreadMain() () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #8 0x00007f4c8b1c9f11 in base::(anonymous namespace)::ThreadFunc(void*) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #9 0x00007f4c94d0a6db in start_thread (arg=0x7f4c05ffb700) at pthread_create.c:463 #10 0x00007f4c9a81b88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 21 (Thread 0x7f4c067fc700 (LWP 18436)): #0 0x00007f4c94d10ed9 in futex_reltimed_wait_cancelable (private=<optimized out>, reltime=0x7f4c067fba50, expected=0, futex_word=0x7f4c067fbc38) at ../sysdeps/unix/sysv/linux/futex-internal.h:142 #1 __pthread_cond_wait_common (abstime=0x7f4c067fbaf0, mutex=0x7f4c067fbbe8, cond=0x7f4c067fbc10) at pthread_cond_wait.c:533 #2 __pthread_cond_timedwait (cond=0x7f4c067fbc10, mutex=0x7f4c067fbbe8, abstime=0x7f4c067fbaf0) at pthread_cond_wait.c:667 #3 0x00007f4c8b1b8837 in base::ConditionVariable::TimedWait(base::TimeDelta const&) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #4 0x00007f4c8b1bab17 in base::WaitableEvent::TimedWaitUntil(base::TimeTicks const&) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #5 0x00007f4c8b184ee8 in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #6 0x00007f4c8b1ac12b in base::RunLoop::Run() () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #7 0x00007f4c8b1ce52f in base::Thread::ThreadMain() () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #8 0x00007f4c8b1c9f11 in base::(anonymous namespace)::ThreadFunc(void*) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #9 0x00007f4c94d0a6db in start_thread (arg=0x7f4c067fc700) at pthread_create.c:463 #10 0x00007f4c9a81b88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 20 (Thread 0x7f4c06ffd700 (LWP 18435)): #0 0x00007f4c94d109f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55561e499df8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88 #1 __pthread_cond_wait_common (abstime=0x0, mutex=0x55561e499d38, cond=0x55561e499dd0) at pthread_cond_wait.c:502 #2 __pthread_cond_wait (cond=0x55561e499dd0, mutex=0x55561e499d38) at pthread_cond_wait.c:655 #3 0x00007f4c8b1b8769 in base::ConditionVariable::Wait() () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #4 0x00007f4c8bec8c28 in cc::SingleThreadTaskGraphRunner::Run() () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #5 0x00007f4c8b1ce36c in base::SimpleThread::ThreadMain() () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #6 0x00007f4c8b1c9f11 in base::(anonymous namespace)::ThreadFunc(void*) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #7 0x00007f4c94d0a6db in start_thread (arg=0x7f4c06ffd700) at pthread_create.c:463 #8 0x00007f4c9a81b88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 19 (Thread 0x7f4c077fe700 (LWP 18434)): #0 0x00007f4c94d109f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f4c077fdc78) at ../sysdeps/unix/sysv/linux/futex-internal.h:88 #1 __pthread_cond_wait_common (abstime=0x0, mutex=0x7f4c077fdc28, cond=0x7f4c077fdc50) at pthread_cond_wait.c:502 #2 __pthread_cond_wait (cond=0x7f4c077fdc50, mutex=0x7f4c077fdc28) at pthread_cond_wait.c:655 #3 0x00007f4c8b1b8769 in base::ConditionVariable::Wait() () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #4 0x00007f4c8b1bab2c in base::WaitableEvent::TimedWaitUntil(base::TimeTicks const&) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #5 0x00007f4c8b1babbf in base::WaitableEvent::Wait() () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #6 0x00007f4c8b1bfc98 in base::internal::SchedulerWorker::Delegate::WaitForWork(base::WaitableEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #7 0x00007f4c8b1c1209 in base::internal::SchedulerWorker::Thread::ThreadMain() () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #8 0x00007f4c8b1c9f11 in base::(anonymous namespace)::ThreadFunc(void*) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #9 0x00007f4c94d0a6db in start_thread (arg=0x7f4c077fe700) at pthread_create.c:463 #10 0x00007f4c9a81b88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 18 (Thread 0x7f4c07fff700 (LWP 18433)): [KCrash Handler] #6 0x00007f4c89b4786c in QtWebEngineCore::NetworkDelegateQt::OnBeforeURLRequest(net::URLRequest*, base::RepeatingCallback<void (int)> const&, GURL*) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #7 0x00007f4c8b79dd7c in net::NetworkDelegate::NotifyBeforeURLRequest(net::URLRequest*, base::RepeatingCallback<void (int)> const&, GURL*) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #8 0x00007f4c8b8f834b in net::URLRequest::Start() [clone .part.97] () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #9 0x00007f4c8a4ab929 in content::ResourceLoader::StartRequestInternal() () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #10 0x00007f4c8a4ac5ed in content::ResourceLoader::Resume(bool) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #11 0x00007f4c8a4ac7d2 in content::ResourceLoader::StartRequest() () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #12 0x00007f4c8a4a5e9e in content::ResourceDispatcherHostImpl::BeginRequestInternal(std::unique_ptr<net::URLRequest, std::default_delete<net::URLRequest> >, std::unique_ptr<content::ResourceHandler, std::default_delete<content::ResourceHandler> >) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #13 0x00007f4c8a4a78df in content::ResourceDispatcherHostImpl::BeginNavigationRequest(content::ResourceContext*, net::URLRequestContext*, storage::FileSystemContext*, content::NavigationRequestInfo const&, std::unique_ptr<content::NavigationUIData, std::default_delete<content::NavigationUIData> >, content::NavigationURLLoaderImplCore*, mojo::InterfacePtr<network::mojom::URLLoaderClient>, mojo::InterfaceRequest<network::mojom::URLLoader>, content::ServiceWorkerNavigationHandleCore*, content::AppCacheNavigationHandleCore*, unsigned int, content::GlobalRequestID*) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #14 0x00007f4c8a494fc5 in content::NavigationURLLoaderImplCore::Start(content::ResourceContext*, net::URLRequestContextGetter*, storage::FileSystemContext*, content::ServiceWorkerNavigationHandleCore*, content::AppCacheNavigationHandleCore*, std::unique_ptr<content::NavigationRequestInfo, std::default_delete<content::NavigationRequestInfo> >, std::unique_ptr<content::NavigationUIData, std::default_delete<content::NavigationUIData> >) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #15 0x00007f4c8a4948c0 in base::internal::Invoker<base::internal::BindState<void (content::NavigationURLLoaderImplCore::*)(content::ResourceContext*, net::URLRequestContextGetter*, storage::FileSystemContext*, content::ServiceWorkerNavigationHandleCore*, content::AppCacheNavigationHandleCore*, std::unique_ptr<content::NavigationRequestInfo, std::default_delete<content::NavigationRequestInfo> >, std::unique_ptr<content::NavigationUIData, std::default_delete<content::NavigationUIData> >), scoped_refptr<content::NavigationURLLoaderImplCore>, content::ResourceContext*, base::internal::UnretainedWrapper<net::URLRequestContextGetter>, base::internal::UnretainedWrapper<storage::FileSystemContext>, content::ServiceWorkerNavigationHandleCore*, content::AppCacheNavigationHandleCore*, base::internal::PassedWrapper<std::unique_ptr<content::NavigationRequestInfo, std::default_delete<content::NavigationRequestInfo> > >, base::internal::PassedWrapper<std::unique_ptr<content::NavigationUIData, std::default_delete<content::NavigationUIData> > > >, void ()>::RunOnce(base::internal::BindStateBase*) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #16 0x00007f4c8b1664ef in base::debug::TaskAnnotator::RunTask(char const*, base::PendingTask*) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #17 0x00007f4c8b188d42 in base::MessageLoop::RunTask(base::PendingTask*) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #18 0x00007f4c8b189685 in base::MessageLoop::DeferOrRunPendingTask(base::PendingTask) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #19 0x00007f4c8b1897f7 in base::MessageLoop::DoWork() [clone .part.168] () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #20 0x00007f4c8b18bc5a in base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #21 0x00007f4c8b1ac12b in base::RunLoop::Run() () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #22 0x00007f4c8a28686a in content::BrowserThreadImpl::IOThreadRun(base::RunLoop*) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #23 0x00007f4c8a286e8f in content::BrowserThreadImpl::Run(base::RunLoop*) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #24 0x00007f4c8b1ce5e8 in base::Thread::ThreadMain() () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #25 0x00007f4c8b1c9f11 in base::(anonymous namespace)::ThreadFunc(void*) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #26 0x00007f4c94d0a6db in start_thread (arg=0x7f4c07fff700) at pthread_create.c:463 #27 0x00007f4c9a81b88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 17 (Thread 0x7f4c28ff9700 (LWP 18432)): #0 0x00007f4c94d109f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f4c28ff8c78) at ../sysdeps/unix/sysv/linux/futex-internal.h:88 #1 __pthread_cond_wait_common (abstime=0x0, mutex=0x7f4c28ff8c28, cond=0x7f4c28ff8c50) at pthread_cond_wait.c:502 #2 __pthread_cond_wait (cond=0x7f4c28ff8c50, mutex=0x7f4c28ff8c28) at pthread_cond_wait.c:655 #3 0x00007f4c8b1b8769 in base::ConditionVariable::Wait() () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #4 0x00007f4c8b1bab2c in base::WaitableEvent::TimedWaitUntil(base::TimeTicks const&) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #5 0x00007f4c8b1babbf in base::WaitableEvent::Wait() () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #6 0x00007f4c8b1bfc98 in base::internal::SchedulerWorker::Delegate::WaitForWork(base::WaitableEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #7 0x00007f4c8b1c101f in base::internal::SchedulerWorker::Thread::ThreadMain() () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #8 0x00007f4c8b1c9f11 in base::(anonymous namespace)::ThreadFunc(void*) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #9 0x00007f4c94d0a6db in start_thread (arg=0x7f4c28ff9700) at pthread_create.c:463 #10 0x00007f4c9a81b88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 16 (Thread 0x7f4c297fa700 (LWP 18431)): #0 0x00007f4c94d109f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f4c297f9c78) at ../sysdeps/unix/sysv/linux/futex-internal.h:88 #1 __pthread_cond_wait_common (abstime=0x0, mutex=0x7f4c297f9c28, cond=0x7f4c297f9c50) at pthread_cond_wait.c:502 #2 __pthread_cond_wait (cond=0x7f4c297f9c50, mutex=0x7f4c297f9c28) at pthread_cond_wait.c:655 #3 0x00007f4c8b1b8769 in base::ConditionVariable::Wait() () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #4 0x00007f4c8b1bab2c in base::WaitableEvent::TimedWaitUntil(base::TimeTicks const&) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #5 0x00007f4c8b1babbf in base::WaitableEvent::Wait() () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #6 0x00007f4c8b1bfc98 in base::internal::SchedulerWorker::Delegate::WaitForWork(base::WaitableEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #7 0x00007f4c8b1c1209 in base::internal::SchedulerWorker::Thread::ThreadMain() () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #8 0x00007f4c8b1c9f11 in base::(anonymous namespace)::ThreadFunc(void*) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #9 0x00007f4c94d0a6db in start_thread (arg=0x7f4c297fa700) at pthread_create.c:463 #10 0x00007f4c9a81b88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 15 (Thread 0x7f4c29ffb700 (LWP 18430)): #0 0x00007f4c94d109f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f4c29ffac78) at ../sysdeps/unix/sysv/linux/futex-internal.h:88 #1 __pthread_cond_wait_common (abstime=0x0, mutex=0x7f4c29ffac28, cond=0x7f4c29ffac50) at pthread_cond_wait.c:502 #2 __pthread_cond_wait (cond=0x7f4c29ffac50, mutex=0x7f4c29ffac28) at pthread_cond_wait.c:655 #3 0x00007f4c8b1b8769 in base::ConditionVariable::Wait() () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #4 0x00007f4c8b1bab2c in base::WaitableEvent::TimedWaitUntil(base::TimeTicks const&) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #5 0x00007f4c8b1babbf in base::WaitableEvent::Wait() () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #6 0x00007f4c8b1bfc98 in base::internal::SchedulerWorker::Delegate::WaitForWork(base::WaitableEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #7 0x00007f4c8b1c101f in base::internal::SchedulerWorker::Thread::ThreadMain() () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #8 0x00007f4c8b1c9f11 in base::(anonymous namespace)::ThreadFunc(void*) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #9 0x00007f4c94d0a6db in start_thread (arg=0x7f4c29ffb700) at pthread_create.c:463 #10 0x00007f4c9a81b88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 14 (Thread 0x7f4c2a7fc700 (LWP 18429)): #0 0x00007f4c94d109f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f4c2a7fbc78) at ../sysdeps/unix/sysv/linux/futex-internal.h:88 #1 __pthread_cond_wait_common (abstime=0x0, mutex=0x7f4c2a7fbc28, cond=0x7f4c2a7fbc50) at pthread_cond_wait.c:502 #2 __pthread_cond_wait (cond=0x7f4c2a7fbc50, mutex=0x7f4c2a7fbc28) at pthread_cond_wait.c:655 #3 0x00007f4c8b1b8769 in base::ConditionVariable::Wait() () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #4 0x00007f4c8b1bab2c in base::WaitableEvent::TimedWaitUntil(base::TimeTicks const&) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #5 0x00007f4c8b1babbf in base::WaitableEvent::Wait() () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #6 0x00007f4c8b1bfc98 in base::internal::SchedulerWorker::Delegate::WaitForWork(base::WaitableEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #7 0x00007f4c8b1c101f in base::internal::SchedulerWorker::Thread::ThreadMain() () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #8 0x00007f4c8b1c9f11 in base::(anonymous namespace)::ThreadFunc(void*) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #9 0x00007f4c94d0a6db in start_thread (arg=0x7f4c2a7fc700) at pthread_create.c:463 #10 0x00007f4c9a81b88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 13 (Thread 0x7f4c2affd700 (LWP 18428)): #0 0x00007f4c94d109f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f4c2affcc78) at ../sysdeps/unix/sysv/linux/futex-internal.h:88 #1 __pthread_cond_wait_common (abstime=0x0, mutex=0x7f4c2affcc28, cond=0x7f4c2affcc50) at pthread_cond_wait.c:502 #2 __pthread_cond_wait (cond=0x7f4c2affcc50, mutex=0x7f4c2affcc28) at pthread_cond_wait.c:655 #3 0x00007f4c8b1b8769 in base::ConditionVariable::Wait() () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #4 0x00007f4c8b1bab2c in base::WaitableEvent::TimedWaitUntil(base::TimeTicks const&) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #5 0x00007f4c8b1babbf in base::WaitableEvent::Wait() () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #6 0x00007f4c8b1bfc98 in base::internal::SchedulerWorker::Delegate::WaitForWork(base::WaitableEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #7 0x00007f4c8b1c101f in base::internal::SchedulerWorker::Thread::ThreadMain() () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #8 0x00007f4c8b1c9f11 in base::(anonymous namespace)::ThreadFunc(void*) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #9 0x00007f4c94d0a6db in start_thread (arg=0x7f4c2affd700) at pthread_create.c:463 #10 0x00007f4c9a81b88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 12 (Thread 0x7f4c2bfff700 (LWP 18426)): #0 0x00007f4c94d10ed9 in futex_reltimed_wait_cancelable (private=<optimized out>, reltime=0x7f4c2bffea80, expected=0, futex_word=0x7f4c2bffec68) at ../sysdeps/unix/sysv/linux/futex-internal.h:142 #1 __pthread_cond_wait_common (abstime=0x7f4c2bffeb20, mutex=0x7f4c2bffec18, cond=0x7f4c2bffec40) at pthread_cond_wait.c:533 #2 __pthread_cond_timedwait (cond=0x7f4c2bffec40, mutex=0x7f4c2bffec18, abstime=0x7f4c2bffeb20) at pthread_cond_wait.c:667 #3 0x00007f4c8b1b8837 in base::ConditionVariable::TimedWait(base::TimeDelta const&) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #4 0x00007f4c8b1bab17 in base::WaitableEvent::TimedWaitUntil(base::TimeTicks const&) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #5 0x00007f4c8b1bac02 in base::WaitableEvent::TimedWait(base::TimeDelta const&) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #6 0x00007f4c8b1bfc81 in base::internal::SchedulerWorker::Delegate::WaitForWork(base::WaitableEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #7 0x00007f4c8b1c1209 in base::internal::SchedulerWorker::Thread::ThreadMain() () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #8 0x00007f4c8b1c9f11 in base::(anonymous namespace)::ThreadFunc(void*) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #9 0x00007f4c94d0a6db in start_thread (arg=0x7f4c2bfff700) at pthread_create.c:463 #10 0x00007f4c9a81b88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 11 (Thread 0x7f4c4d7fa700 (LWP 18424)): #0 0x00007f4c94d10ed9 in futex_reltimed_wait_cancelable (private=<optimized out>, reltime=0x7f4c4d7f9a80, expected=0, futex_word=0x7f4c4d7f9c68) at ../sysdeps/unix/sysv/linux/futex-internal.h:142 #1 __pthread_cond_wait_common (abstime=0x7f4c4d7f9b20, mutex=0x7f4c4d7f9c18, cond=0x7f4c4d7f9c40) at pthread_cond_wait.c:533 #2 __pthread_cond_timedwait (cond=0x7f4c4d7f9c40, mutex=0x7f4c4d7f9c18, abstime=0x7f4c4d7f9b20) at pthread_cond_wait.c:667 #3 0x00007f4c8b1b8837 in base::ConditionVariable::TimedWait(base::TimeDelta const&) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #4 0x00007f4c8b1bab17 in base::WaitableEvent::TimedWaitUntil(base::TimeTicks const&) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #5 0x00007f4c8b1bac02 in base::WaitableEvent::TimedWait(base::TimeDelta const&) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #6 0x00007f4c8b1bfc81 in base::internal::SchedulerWorker::Delegate::WaitForWork(base::WaitableEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #7 0x00007f4c8b1c1209 in base::internal::SchedulerWorker::Thread::ThreadMain() () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #8 0x00007f4c8b1c9f11 in base::(anonymous namespace)::ThreadFunc(void*) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #9 0x00007f4c94d0a6db in start_thread (arg=0x7f4c4d7fa700) at pthread_create.c:463 #10 0x00007f4c9a81b88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 10 (Thread 0x7f4c4dffb700 (LWP 18423)): #0 0x00007f4c94d10ed9 in futex_reltimed_wait_cancelable (private=<optimized out>, reltime=0x7f4c4dffaa80, expected=0, futex_word=0x7f4c4dffac68) at ../sysdeps/unix/sysv/linux/futex-internal.h:142 #1 __pthread_cond_wait_common (abstime=0x7f4c4dffab20, mutex=0x7f4c4dffac18, cond=0x7f4c4dffac40) at pthread_cond_wait.c:533 #2 __pthread_cond_timedwait (cond=0x7f4c4dffac40, mutex=0x7f4c4dffac18, abstime=0x7f4c4dffab20) at pthread_cond_wait.c:667 #3 0x00007f4c8b1b8837 in base::ConditionVariable::TimedWait(base::TimeDelta const&) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #4 0x00007f4c8b1bab17 in base::WaitableEvent::TimedWaitUntil(base::TimeTicks const&) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #5 0x00007f4c8b1bac02 in base::WaitableEvent::TimedWait(base::TimeDelta const&) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #6 0x00007f4c8b1bfc81 in base::internal::SchedulerWorker::Delegate::WaitForWork(base::WaitableEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #7 0x00007f4c8b1c1209 in base::internal::SchedulerWorker::Thread::ThreadMain() () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #8 0x00007f4c8b1c9f11 in base::(anonymous namespace)::ThreadFunc(void*) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #9 0x00007f4c94d0a6db in start_thread (arg=0x7f4c4dffb700) at pthread_create.c:463 #10 0x00007f4c9a81b88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 9 (Thread 0x7f4c4e7fc700 (LWP 18422)): #0 0x00007f4c94d10ed9 in futex_reltimed_wait_cancelable (private=<optimized out>, reltime=0x7f4c4e7fba80, expected=0, futex_word=0x7f4c4e7fbc68) at ../sysdeps/unix/sysv/linux/futex-internal.h:142 #1 __pthread_cond_wait_common (abstime=0x7f4c4e7fbb20, mutex=0x7f4c4e7fbc18, cond=0x7f4c4e7fbc40) at pthread_cond_wait.c:533 #2 __pthread_cond_timedwait (cond=0x7f4c4e7fbc40, mutex=0x7f4c4e7fbc18, abstime=0x7f4c4e7fbb20) at pthread_cond_wait.c:667 #3 0x00007f4c8b1b8837 in base::ConditionVariable::TimedWait(base::TimeDelta const&) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #4 0x00007f4c8b1bab17 in base::WaitableEvent::TimedWaitUntil(base::TimeTicks const&) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #5 0x00007f4c8b1bac02 in base::WaitableEvent::TimedWait(base::TimeDelta const&) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #6 0x00007f4c8b1bfc81 in base::internal::SchedulerWorker::Delegate::WaitForWork(base::WaitableEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #7 0x00007f4c8b1c1209 in base::internal::SchedulerWorker::Thread::ThreadMain() () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #8 0x00007f4c8b1c9f11 in base::(anonymous namespace)::ThreadFunc(void*) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #9 0x00007f4c94d0a6db in start_thread (arg=0x7f4c4e7fc700) at pthread_create.c:463 #10 0x00007f4c9a81b88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 8 (Thread 0x7f4c4effd700 (LWP 18421)): #0 __GI___pthread_getspecific (key=<optimized out>) at pthread_getspecific.c:65 #1 0x00007f4c8b1d29d7 in base::ThreadLocalStorage::StaticSlot::Get() const () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #2 0x00007f4c8b1ab079 in base::RunLoop::IsNestedOnCurrentThread() () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #3 0x00007f4c8b1895f1 in base::MessageLoop::DoIdleWork() () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #4 0x00007f4c8b18bca5 in base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #5 0x00007f4c8b1ac12b in base::RunLoop::Run() () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #6 0x00007f4c8b1ce52f in base::Thread::ThreadMain() () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #7 0x00007f4c8b1c9f11 in base::(anonymous namespace)::ThreadFunc(void*) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #8 0x00007f4c94d0a6db in start_thread (arg=0x7f4c4effd700) at pthread_create.c:463 #9 0x00007f4c9a81b88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 7 (Thread 0x7f4c4f7fe700 (LWP 18420)): #0 0x00007f4c94d109f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f4c4f7fdc18) at ../sysdeps/unix/sysv/linux/futex-internal.h:88 #1 __pthread_cond_wait_common (abstime=0x0, mutex=0x7f4c4f7fdbc8, cond=0x7f4c4f7fdbf0) at pthread_cond_wait.c:502 #2 __pthread_cond_wait (cond=0x7f4c4f7fdbf0, mutex=0x7f4c4f7fdbc8) at pthread_cond_wait.c:655 #3 0x00007f4c8b1b8769 in base::ConditionVariable::Wait() () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #4 0x00007f4c8b1bab2c in base::WaitableEvent::TimedWaitUntil(base::TimeTicks const&) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #5 0x00007f4c8b1babbf in base::WaitableEvent::Wait() () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #6 0x00007f4c8b184eda in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #7 0x00007f4c8b1ac12b in base::RunLoop::Run() () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #8 0x00007f4c8b1ce52f in base::Thread::ThreadMain() () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #9 0x00007f4c8b1c9f11 in base::(anonymous namespace)::ThreadFunc(void*) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #10 0x00007f4c94d0a6db in start_thread (arg=0x7f4c4f7fe700) at pthread_create.c:463 #11 0x00007f4c9a81b88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 6 (Thread 0x7f4c4ffff700 (LWP 18419)): #0 0x00007f4c9a82c0c6 in ___vsnprintf_chk (s=0x7f4c4fffe64a "", maxlen=1014, flags=1, slen=18446744073709551615, format=0x7f4c7f832aed ": %s", args=0x7f4c4fffe560) at vsnprintf_chk.c:31 #1 0x00007f4c7f8143b3 in evutil_vsnprintf () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6 #2 0x00007f4c7f81444f in evutil_snprintf () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6 #3 0x00007f4c7f81795c in event_logv_ () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6 #4 0x00007f4c7f817b44 in event_warn () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6 #5 0x00007f4c7f81946c in ?? () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6 #6 0x00007f4c7f80f114 in event_base_loop () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6 #7 0x00007f4c8b18bcc5 in base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #8 0x00007f4c8b1ac12b in base::RunLoop::Run() () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #9 0x00007f4c8b1ce52f in base::Thread::ThreadMain() () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #10 0x00007f4c8b1c9f11 in base::(anonymous namespace)::ThreadFunc(void*) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5 #11 0x00007f4c94d0a6db in start_thread (arg=0x7f4c4ffff700) at pthread_create.c:463 #12 0x00007f4c9a81b88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 5 (Thread 0x7f4c655e8700 (LWP 18412)): #0 0x00007f4c929e897c in g_main_context_prepare () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 #1 0x00007f4c929e936b in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 #2 0x00007f4c929e954c in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 #3 0x00007f4c9b149a9b in QEventDispatcherGlib::processEvents (this=0x7f4c5c000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:425 #4 0x00007f4c9b0eddea in QEventLoop::exec (this=this@entry=0x7f4c655e7cf0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:214 #5 0x00007f4c9af18b8a in QThread::exec (this=<optimized out>) at thread/qthread.cpp:525 #6 0x00007f4c9cdbae45 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5 #7 0x00007f4c9af23aab in QThreadPrivate::start (arg=0x7f4c9d032d60) at thread/qthread_unix.cpp:367 #8 0x00007f4c94d0a6db in start_thread (arg=0x7f4c655e8700) at pthread_create.c:463 #9 0x00007f4c9a81b88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 4 (Thread 0x7f4c66887700 (LWP 18411)): #0 0x00007f4c94d109f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55561e05edc8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88 #1 __pthread_cond_wait_common (abstime=0x0, mutex=0x55561e05ed78, cond=0x55561e05eda0) at pthread_cond_wait.c:502 #2 __pthread_cond_wait (cond=0x55561e05eda0, mutex=0x55561e05ed78) at pthread_cond_wait.c:655 #3 0x00007f4c7075346b in ?? () from /usr/lib/x86_64-linux-gnu/dri/r600_dri.so #4 0x00007f4c70753197 in ?? () from /usr/lib/x86_64-linux-gnu/dri/r600_dri.so #5 0x00007f4c94d0a6db in start_thread (arg=0x7f4c66887700) at pthread_create.c:463 #6 0x00007f4c9a81b88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 3 (Thread 0x7f4c678ca700 (LWP 18410)): #0 0x00007f4c94d109f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55561e13a900) at ../sysdeps/unix/sysv/linux/futex-internal.h:88 #1 __pthread_cond_wait_common (abstime=0x0, mutex=0x55561e13a8b0, cond=0x55561e13a8d8) at pthread_cond_wait.c:502 #2 __pthread_cond_wait (cond=0x55561e13a8d8, mutex=0x55561e13a8b0) at pthread_cond_wait.c:655 #3 0x00007f4c7075346b in ?? () from /usr/lib/x86_64-linux-gnu/dri/r600_dri.so #4 0x00007f4c70753197 in ?? () from /usr/lib/x86_64-linux-gnu/dri/r600_dri.so #5 0x00007f4c94d0a6db in start_thread (arg=0x7f4c678ca700) at pthread_create.c:463 #6 0x00007f4c9a81b88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 2 (Thread 0x7f4c73e89700 (LWP 18409)): #0 0x00007f4c9a80ebf9 in __GI___poll (fds=0x7f4c73e88c28, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29 #1 0x00007f4c92780747 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1 #2 0x00007f4c9278236a in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1 #3 0x00007f4c75f9e129 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5 #4 0x00007f4c9af23aab in QThreadPrivate::start (arg=0x55561e076890) at thread/qthread_unix.cpp:367 #5 0x00007f4c94d0a6db in start_thread (arg=0x7f4c73e89700) at pthread_create.c:463 #6 0x00007f4c9a81b88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 1 (Thread 0x7f4c9e9e1880 (LWP 18408)): #0 0x00007f4c94d109f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7ffe20f31f98) at ../sysdeps/unix/sysv/linux/futex-internal.h:88 #1 __pthread_cond_wait_common (abstime=0x0, mutex=0x55561e0631e8, cond=0x7ffe20f31f70) at pthread_cond_wait.c:502 #2 __pthread_cond_wait (cond=0x7ffe20f31f70, mutex=0x55561e0631e8) at pthread_cond_wait.c:655 #3 0x00007f4c92780952 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1 #4 0x00007f4c9278206f in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1 #5 0x00007f4c92782180 in xcb_wait_for_reply () from /usr/lib/x86_64-linux-gnu/libxcb.so.1 #6 0x00007f4c75fc221d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5 #7 0x00007f4c75fc234c in ?? () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5 #8 0x00007f4c9b68f4f8 in QCursor::pos(QScreen const*) () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5 #9 0x00007f4c9c1382b9 in QTreeView::drawTree(QPainter*, QRegion const&) const () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #10 0x00007f4c9c13cfb5 in QTreeView::paintEvent(QPaintEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #11 0x00007f4c9bebbb08 in QWidget::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #12 0x00007f4c9bf5d71e in QFrame::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #13 0x00007f4c9c0d48eb in QAbstractItemView::viewportEvent(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #14 0x00007f4c9c13decc in QTreeView::viewportEvent(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #15 0x00007f4c9b0ef83d in QCoreApplicationPrivate::sendThroughObjectEventFilters (receiver=0x55561e41c1d0, event=0x7ffe20f32820) at kernel/qcoreapplication.cpp:1174 #16 0x00007f4c9be7ce65 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #17 0x00007f4c9be8445f in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #18 0x00007f4c9b0efab8 in QCoreApplication::notifyInternal2 (receiver=0x55561e41c1d0, event=0x7ffe20f32820) at kernel/qcoreapplication.cpp:1048 #19 0x00007f4c9beb464a in QWidgetPrivate::sendPaintEvent(QRegion const&) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #20 0x00007f4c9beb4e2d in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #21 0x00007f4c9beb5a90 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #22 0x00007f4c9beb5c19 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #23 0x00007f4c9beb5c19 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #24 0x00007f4c9beb5c19 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #25 0x00007f4c9beb481e in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #26 0x00007f4c9beb5a90 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #27 0x00007f4c9beb481e in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #28 0x00007f4c9beb5a90 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #29 0x00007f4c9beb481e in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #30 0x00007f4c9beb5a90 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #31 0x00007f4c9beb481e in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #32 0x00007f4c9beb5a90 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #33 0x00007f4c9beb481e in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #34 0x00007f4c9beb5a90 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #35 0x00007f4c9beb481e in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #36 0x00007f4c9beb5a90 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #37 0x00007f4c9beb481e in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #38 0x00007f4c9beb5a90 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #39 0x00007f4c9beb481e in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #40 0x00007f4c9beb5a90 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #41 0x00007f4c9beb481e in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #42 0x00007f4c9beb5a90 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #43 0x00007f4c9beb481e in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #44 0x00007f4c9beb5a90 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #45 0x00007f4c9beb481e in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #46 0x00007f4c9be8c1e6 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #47 0x00007f4c9be8c425 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #48 0x00007f4c9bea3b6f in QWidgetPrivate::syncBackingStore() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #49 0x00007f4c9bebbc78 in QWidget::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #50 0x00007f4c9bfc38d0 in QMainWindow::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #51 0x00007f4c9d568c77 in KMainWindow::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libKF5XmlGui.so.5 #52 0x00007f4c9d5adbb5 in KXmlGuiWindow::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libKF5XmlGui.so.5 #53 0x00007f4c9be7ce8c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #54 0x00007f4c9be8445f in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #55 0x00007f4c9b0efab8 in QCoreApplication::notifyInternal2 (receiver=0x55561e0a84b0, event=event@entry=0x55561f720860) at kernel/qcoreapplication.cpp:1048 #56 0x00007f4c9b0f25fd in QCoreApplication::sendEvent (event=0x55561f720860, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:234 #57 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x55561e030990) at kernel/qcoreapplication.cpp:1745 #58 0x00007f4c9b0f2bb8 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1599 #59 0x00007f4c9b14a453 in postEventSourceDispatch (s=0x55561e0aab30) at kernel/qeventdispatcher_glib.cpp:276 #60 0x00007f4c929e9287 in g_main_context_dispatch () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 #61 0x00007f4c929e94c0 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 #62 0x00007f4c929e954c in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 #63 0x00007f4c9b149a7f in QEventDispatcherGlib::processEvents (this=0x55561e0ba7e0, flags=...) at kernel/qeventdispatcher_glib.cpp:423 #64 0x00007f4c76028ed1 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5 #65 0x00007f4c9b0eddea in QEventLoop::exec (this=this@entry=0x7ffe20f35390, flags=..., flags@entry=...) at kernel/qeventloop.cpp:214 #66 0x00007f4c9b0f6fa0 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1336 #67 0x000055561d77ea80 in main (argc=<optimized out>, argv=<optimized out>) at ./src/main.cpp:122
I'm just commenting to say I've the same bug in version 5.9.2
https://bugreports.qt.io/browse/QTBUG-71284 (Akregator segfaults in QtWebEngineCore::NetworkDelegateQt::OnBeforeURLRequest): "It looks like a thread safety issue in kdepim's WebEngineViewer. QtWebEngine executes interceptors on the IO thread, but WebEngineViewer's interceptor does not take this into account. […] WebEngineViewer's interceptor needs to synchronize with the UI thread to prevent memory corruption."
See also: [Bug 371511] kontact/akregator crashes while trying to open a link from the list (middle click) [akregator] [Bug 400028] akregator segfaults in QtWebEngineCore::NetworkDelegateQt::OnBeforeURLRequest, thread safety issue Re: DebianBug#910852: libqt5webengine5: Akregator crashes very often, WebEngine related https://bugs.debian.org/910852 I defer decision on what is duplicate of what to someone with enough expertise to read backtraces.
*** Bug 398283 has been marked as a duplicate of this bug. ***
*** Bug 400599 has been marked as a duplicate of this bug. ***
*** Bug 400598 has been marked as a duplicate of this bug. ***
*** Bug 400823 has been marked as a duplicate of this bug. ***
*** This bug has been marked as a duplicate of bug 371511 ***