https://bugs.kde.org/show_bug.cgi?id=499840
--- Comment #1 from Matt Fagnani <matt.fagn...@bell.net> ---
kwin_wayland crashed when logging out with a different failed assertion
"group->refcount > 0" in libinput_device_group_unref in libinput. The trace was
a bit different, but a KWin::LibInput::Event was also being destroyed so the
crashes might be related.
Core was generated by `/usr/bin/kwin_wayland --wayland-fd 7 --socket wayland-0
--xwayland-fd 8 --xwayl'.
Program terminated with signal SIGABRT, Aborted.
#0 __pthread_kill_implementation (threadid=<optimized out>,
signo=signo@entry=6, no_tid=no_tid@entry=0)
at pthread_kill.c:44
44 return INTERNAL_SYSCALL_ERROR_P (ret) ? INTERNAL_SYSCALL_ERRNO
(ret) : 0;
[Current thread is 1 (Thread 0x7f75a9ffb6c0 (LWP 26742))]
(gdb) bt
#0 __pthread_kill_implementation (threadid=<optimized out>,
signo=signo@entry=6, no_tid=no_tid@entry=0)
at pthread_kill.c:44
#1 0x00007f75e807b183 in __pthread_kill_internal (threadid=<optimized out>,
signo=6) at pthread_kill.c:78
#2 0x00007f75e8021f9e in __GI_raise (sig=6) at ../sysdeps/posix/raise.c:26
#3 0x00007f75ebca41a2 in KCrash::defaultCrashHandler(int) () at
/lib64/libKF6Crash.so.6
#4 0x00007f75e8022050 in <signal handler called> () at /lib64/libc.so.6
#5 __pthread_kill_implementation (threadid=<optimized out>,
signo=signo@entry=6, no_tid=no_tid@entry=0)
at pthread_kill.c:44
#6 0x00007f75e807b183 in __pthread_kill_internal (threadid=<optimized out>,
signo=6) at pthread_kill.c:78
#7 0x00007f75e8021f9e in __GI_raise (sig=sig@entry=6) at
../sysdeps/posix/raise.c:26
#8 0x00007f75e8009942 in __GI_abort () at abort.c:79
#9 0x00007f75e800985e in __assert_fail_base
(fmt=0x7f75e81becb0 "%s%s%s:%u: %s%sAssertion `%s' failed.\n%n",
assertion=assertion@entry=0x7f75e7be4248 "group->refcount > 0",
file=file@entry=0x7f75e7be3fad "../src/libinput.c", line=line@entry=3923,
function=function@entry=0x7f75e7be9310 <__PRETTY_FUNCTION__.1.lto_priv.11>
"libinput_device_group_unref") at assert.c:96
#10 0x00007f75e801a0c7 in __assert_fail
(assertion=assertion@entry=0x7f75e7be4248 "group->refcount > 0",
file=file@entry=0x7f75e7be3fad "../src/libinput.c", line=line@entry=3923,
function=function@entry=0x7f75e7be9310 <__PRETTY_FUNCTION__.1.lto_priv.11>
"libinput_device_group_unref") at assert.c:105
#11 0x00007f75e7bab7a2 in libinput_device_group_unref (group=<optimized out>)
at ../src/libinput.c:3923
#12 libinput_device_group_unref (group=<optimized out>) at
../src/libinput.c:3921
#13 0x00007f75e7bbf7d1 in evdev_device_destroy (device=0x559d9aea14d0) at
../src/evdev.c:3112
#14 0x00007f75e7ba8ede in libinput_device_destroy (device=<optimized out>) at
../src/libinput.c:2164
#15 libinput_device_unref (device=<optimized out>) at ../src/libinput.c:2173
#16 0x00007f75e7baaa16 in libinput_event_destroy (event=0x7f7588006ba0) at
../src/libinput.c:2039
#17 0x00007f75eb732a03 in KWin::LibInput::Event::~Event (this=0x7f7588005e40,
this=<optimized out>)
at
/usr/src/debug/kwin-6.3.0-1.fc41.x86_64/src/backends/libinput/events.cpp:82
--Type <RET> for more, q to quit, c to continue without paging--c
#18 KWin::LibInput::PointerEvent::~PointerEvent (this=0x7f7588005e40,
this=<optimized out>)
at
/usr/src/debug/kwin-6.3.0-1.fc41.x86_64/src/backends/libinput/events.cpp:137
#19 KWin::LibInput::PointerEvent::~PointerEvent (this=0x7f7588005e40,
this=<optimized out>)
at
/usr/src/debug/kwin-6.3.0-1.fc41.x86_64/src/backends/libinput/events.cpp:137
#20 0x00007f75eb72764e in
std::default_delete<KWin::LibInput::Event>::operator()
(this=<optimized out>, __ptr=<optimized out>) at
/usr/include/c++/14/bits/unique_ptr.h:87
#21 std::unique_ptr<KWin::LibInput::Event,
std::default_delete<KWin::LibInput::Event> >::~unique_ptr
(this=0x7f7588007dc8, this=<optimized out>) at
/usr/include/c++/14/bits/unique_ptr.h:399
#22 std::destroy_at<std::unique_ptr<KWin::LibInput::Event,
std::default_delete<KWin::LibInput::Event> > >
(__location=0x7f7588007dc8) at /usr/include/c++/14/bits/stl_construct.h:88
#23 std::_Destroy<std::unique_ptr<KWin::LibInput::Event,
std::default_delete<KWin::LibInput::Event> > >
(__pointer=0x7f7588007dc8) at /usr/include/c++/14/bits/stl_construct.h:149
#24 std::_Destroy_aux<false>::__destroy<std::unique_ptr<KWin::LibInput::Event,
std::default_delete<KWin::LibInput::Event> >*> (__first=0x7f7588007dc8,
__last=<optimized out>) at /usr/include/c++/14/bits/stl_construct.h:163
#25 std::_Destroy<std::unique_ptr<KWin::LibInput::Event,
std::default_delete<KWin::LibInput::Event> >*>
(__first=<optimized out>, __last=<optimized out>) at
/usr/include/c++/14/bits/stl_construct.h:196
#26 std::_Destroy<std::unique_ptr<KWin::LibInput::Event,
std::default_delete<KWin::LibInput::Event> >*,
std::unique_ptr<KWin::LibInput::Event,
std::default_delete<KWin::LibInput::Event> > > (__first=<optimized out>,
__last=<optimized out>)
at /usr/include/c++/14/bits/alloc_traits.h:993
#27 std::deque<std::unique_ptr<KWin::LibInput::Event,
std::default_delete<KWin::LibInput::Event> >,
std::allocator<std::unique_ptr<KWin::LibInput::Event,
std::default_delete<KWin::LibInput::Event> > > >::_M_destroy_data_aux
(this=<optimized out>, __first=Python Exception <class 'gdb.error'>: value
has been optimized out
, __last=Python Exception <class 'gdb.error'>: value has been optimized out
) at /usr/include/c++/14/bits/deque.tcc:878
#28 std::deque<std::unique_ptr<KWin::LibInput::Event,
std::default_delete<KWin::LibInput::Event> >,
std::allocator<std::unique_ptr<KWin::LibInput::Event,
std::default_delete<KWin::LibInput::Event> > > >::_M_destroy_data
(this=0x559d9ae0d840, __first=Python Exception <class 'gdb.error'>: value
has been optimized out
, __last=Python Exception <class 'gdb.error'>: value has been optimized out
) at /usr/include/c++/14/bits/stl_deque.h:2091
#29 std::deque<std::unique_ptr<KWin::LibInput::Event,
std::default_delete<KWin::LibInput::Event> >,
std::allocator<std::unique_ptr<KWin::LibInput::Event,
std::default_delete<KWin::LibInput::Event> > > >::~deque
(this=0x559d9ae0d840, this=<optimized out>) at
/usr/include/c++/14/bits/stl_deque.h:1028
#30 KWin::LibInput::Connection::~Connection (this=0x559d9ae0d810,
this=<optimized out>)
at
/usr/src/debug/kwin-6.3.0-1.fc41.x86_64/src/backends/libinput/connection.cpp:121
#31 0x00007f75eb7276d5 in KWin::LibInput::Connection::~Connection
(this=0x559d9ae0d810, this=<optimized out>)
at
/usr/src/debug/kwin-6.3.0-1.fc41.x86_64/src/backends/libinput/connection.cpp:121
#32 0x00007f75e874b8ae in QObject::event (this=0x559d9ae0d810,
e=0x559d9afca6a0)
at
/usr/src/debug/qt6-qtbase-6.8.2-2.fc41.x86_64/src/corelib/kernel/qobject.cpp:1403
#33 0x00007f75e9a3d9b8 in QApplicationPrivate::notify_helper
(this=<optimized out>, receiver=0x559d9ae0d810, e=0x559d9afca6a0)
at
/usr/src/debug/qt6-qtbase-6.8.2-2.fc41.x86_64/src/widgets/kernel/qapplication.cpp:3296
#34 0x00007f75e86f3590 in QCoreApplication::notifyInternal2
(receiver=0x559d9ae0d810, event=0x559d9afca6a0)
at
/usr/src/debug/qt6-qtbase-6.8.2-2.fc41.x86_64/src/corelib/kernel/qcoreapplication.cpp:1172
#35 0x00007f75e86f37ed in QCoreApplication::sendEvent (receiver=<optimized
out>, event=<optimized out>)
at
/usr/src/debug/qt6-qtbase-6.8.2-2.fc41.x86_64/src/corelib/kernel/qcoreapplication.cpp:1612
#36 0x00007f75e86f6f51 in QCoreApplicationPrivate::sendPostedEvents
(receiver=0x0, event_type=0, data=0x559d9ae170e0)
at
/usr/src/debug/qt6-qtbase-6.8.2-2.fc41.x86_64/src/corelib/kernel/qcoreapplication.cpp:1946
#37 0x00007f75e86f71fd in QCoreApplication::sendPostedEvents
(receiver=<optimized out>, event_type=<optimized out>)
at
/usr/src/debug/qt6-qtbase-6.8.2-2.fc41.x86_64/src/corelib/kernel/qcoreapplication.cpp:1800
#38 0x00007f75e89efb5f in postEventSourceDispatch (s=0x7f7588000f20)
at
/usr/src/debug/qt6-qtbase-6.8.2-2.fc41.x86_64/src/corelib/kernel/qeventdispatcher_glib.cpp:246
#39 0x00007f75e707028c in g_main_dispatch (context=0x7f7588000c60) at
../glib/gmain.c:3357
#40 g_main_context_dispatch_unlocked (context=0x7f7588000c60) at
../glib/gmain.c:4208
#41 0x00007f75e70d07b8 in g_main_context_iterate_unlocked.isra.0
(context=context@entry=0x7f7588000c60, block=block@entry=1,
dispatch=dispatch@entry=1, self=<optimized out>)
at ../glib/gmain.c:4273
#42 0x00007f75e7071783 in g_main_context_iteration (context=0x7f7588000c60,
may_block=1) at ../glib/gmain.c:4338
#43 0x00007f75e89ef2b3 in QEventDispatcherGlib::processEvents
(this=0x7f7588000b70, flags=...)
at
/usr/src/debug/qt6-qtbase-6.8.2-2.fc41.x86_64/src/corelib/kernel/qeventdispatcher_glib.cpp:399
#44 0x00007f75e8700993 in QEventLoop::exec (this=this@entry=0x7f75a9ffa830,
flags=..., flags@entry=...)
at
/usr/src/debug/qt6-qtbase-6.8.2-2.fc41.x86_64/src/corelib/global/qflags.h:34
#45 0x00007f75e8819095 in QThread::exec (this=<optimized out>)
at
/usr/src/debug/qt6-qtbase-6.8.2-2.fc41.x86_64/src/corelib/global/qflags.h:74
#46 0x00007f75e88b67e9 in operator() (__closure=<optimized out>)
at
/usr/src/debug/qt6-qtbase-6.8.2-2.fc41.x86_64/src/corelib/thread/qthread_unix.cpp:375
#47 (anonymous
namespace)::terminate_on_exception<QThreadPrivate::start(void*)::<lambda()> >
(t=<optimized out>)
at
/usr/src/debug/qt6-qtbase-6.8.2-2.fc41.x86_64/src/corelib/thread/qthread_unix.cpp:311
#48 QThreadPrivate::start (arg=0x7f75cc00f378)
at
/usr/src/debug/qt6-qtbase-6.8.2-2.fc41.x86_64/src/corelib/thread/qthread_unix.cpp:339
#49 0x00007f75e8079168 in start_thread (arg=<optimized out>) at
pthread_create.c:448
#50 0x00007f75e80fd14c in __GI___clone3 () at
../sysdeps/unix/sysv/linux/x86_64/clone3.S:78
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