Bug 371970

Application: konsole (15.12.3)

Qt Version: 5.5.1
Operating System: Linux 4.4.0-45-generic x86_64
Distribution: Ubuntu 16.04.1 LTS

-- Information about the crash:
General instability of KDE, many application crashes, Konsole too

The crash can be reproduced sometimes.

-- Backtrace:
Application: Konsole (konsole), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f669d81b940 (LWP 4120))]

Thread 2 (Thread 0x7f669aefe700 (LWP 4121)):
#0  __lll_lock_wait () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:135
#1  0x00007f66a8bc5e0d in __GI___pthread_mutex_lock (mutex=0xf2fab8) at ../nptl/pthread_mutex_lock.c:80
#2  0x00007f66a91eee6c in _xcb_conn_wait (c=c@entry=0xf2faa0, cond=cond@entry=0xf2fae0, vector=vector@entry=0x0, count=count@entry=0x0) at ../../src/xcb_conn.c:476
#3  0x00007f66a91f08d7 in xcb_wait_for_event (c=0xf2faa0) at ../../src/xcb_in.c:693
#4  0x00007f669d25b629 in QXcbEventReader::run (this=0xf3d190) at qxcbconnection.cpp:1253
#5  0x00007f66ad09d84e in QThreadPrivate::start (arg=0xf3d190) at thread/qthread_unix.cpp:331
#6  0x00007f66a8bc370a in start_thread (arg=0x7f669aefe700) at pthread_create.c:333
#7  0x00007f66b070682d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f669d81b940 (LWP 4120)):
[KCrash Handler]
#6  poll_for_reply (c=c@entry=0xf2faa0, request=request@entry=947, reply=reply@entry=0x7fff597aa9f8, error=error@entry=0x7fff597aaaf0) at ../../src/xcb_in.c:428
#7  0x00007f66a91f062c in wait_for_reply (c=c@entry=0xf2faa0, request=947, e=e@entry=0x7fff597aaaf0) at ../../src/xcb_in.c:515
#8  0x00007f66a91f0721 in xcb_wait_for_reply (c=c@entry=0xf2faa0, request=947, e=e@entry=0x7fff597aaaf0) at ../../src/xcb_in.c:546
#9  0x00007f66aa751a47 in _XReply (dpy=dpy@entry=0xf2e850, rep=rep@entry=0x7fff597aab70, extra=extra@entry=0, discard=discard@entry=0) at ../../src/xcb_io.c:602
#10 0x00007f669ce1a32f in XIQueryDevice (dpy=0xf2e850, deviceid=13, ndevices_return=ndevices_return@entry=0x7fff597aabfc) at ../../src/XIQueryDevice.c:60
#11 0x00007f669d282cfe in QXcbConnection::handleEnterEvent (this=0xf02950) at qxcbconnection_xi2.cpp:830
#12 0x00007f669d27486d in QXcbWindow::handleEnterNotifyEvent (this=0x10fb490, event=0x7f6694003e60) at qxcbwindow.cpp:2317
#13 0x00007f669d25d65d in QXcbConnection::handleXcbEvent (this=this@entry=0xf02950, event=event@entry=0x7f6694003e60) at qxcbconnection.cpp:1093
#14 0x00007f669d25de53 in QXcbConnection::processXcbEvents (this=0xf02950) at qxcbconnection.cpp:1532
#15 0x00007f66ad2adea1 in QObject::event (this=0xf02950, e=<optimized out>) at kernel/qobject.cpp:1239
#16 0x00007f66adb7105c in QApplicationPrivate::notify_helper (this=this@entry=0xf1cff0, receiver=receiver@entry=0xf02950, e=e@entry=0x7f6694003ed0) at kernel/qapplication.cpp:3716
#17 0x00007f66adb76516 in QApplication::notify (this=0x7fff597ab440, receiver=0xf02950, e=0x7f6694003ed0) at kernel/qapplication.cpp:3499
#18 0x00007f66ad27e62b in QCoreApplication::notifyInternal (this=0x7fff597ab440, receiver=0xf02950, event=event@entry=0x7f6694003ed0) at kernel/qcoreapplication.cpp:965
#19 0x00007f66ad280a26 in QCoreApplication::sendEvent (event=0x7f6694003ed0, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:224
#20 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0xee3c90) at kernel/qcoreapplication.cpp:1593
#21 0x00007f66ad280f08 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1451
#22 0x00007f66ad2d4673 in postEventSourceDispatch (s=0xf709e0) at kernel/qeventdispatcher_glib.cpp:271
#23 0x00007f66a848c1a7 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#24 0x00007f66a848c400 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#25 0x00007f66a848c4ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#26 0x00007f66ad2d4a7f in QEventDispatcherGlib::processEvents (this=0xf7a280, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#27 0x00007f66ad27bdea in QEventLoop::exec (this=this@entry=0x7fff597ab310, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#28 0x00007f66ad283e8c in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1229
#29 0x00007f66b09f0d92 in kdemain () from /usr/lib/x86_64-linux-gnu/libkdeinit5_konsole.so
#30 0x00007f66b0620830 in __libc_start_main (main=0x400710 <main>, argc=1, argv=0x7fff597ab588, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff597ab578) at ../csu/libc-start.c:291
#31 0x0000000000400749 in _start ()

Possible duplicates by query: bug 371346, bug 362919, bug 362415, bug 361934, bug 360207.

Reported using DrKonqi