Bug 296803

Application: plasma-desktop (0.4)
KDE Platform Version: 4.7.4 (4.7.4)
Qt Version: 4.7.4
Operating System: Linux 3.0.0-16-generic x86_64
Distribution: Ubuntu 11.10

-- Information about the crash:
- What I was doing when the application crashed:
Just switched application when plasma crashed, may be in correlation with usage of external monitor.

The crash can be reproduced some of the time.

-- Backtrace:
Application: Plasma Desktop Shell (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f8aa5a777a0 (LWP 2838))]

Thread 10 (Thread 0x7f8a8cde5700 (LWP 2839)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f8a9f54efe2 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#2  0x00007f8a9f54f019 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#3  0x00007f8a9a1afefc in start_thread (arg=0x7f8a8cde5700) at pthread_create.c:304
#4  0x00007f8aa536c59d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5  0x0000000000000000 in ?? ()

Thread 9 (Thread 0x7f8a855f8700 (LWP 2840)):
#0  0x00007f8a996a3421 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f8aa254af3e in QEventDispatcherGlib::processEvents (this=0xf07210, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#2  0x00007f8aa251ecf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#3  0x00007f8aa251eef7 in QEventLoop::exec (this=0x7f8a855f7db0, flags=...) at kernel/qeventloop.cpp:201
#4  0x00007f8aa243627f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#5  0x00007f8aa2501cbf in QInotifyFileSystemWatcherEngine::run (this=0xf06a40) at io/qfilesystemwatcher_inotify.cpp:248
#6  0x00007f8aa2438d05 in QThreadPrivate::start (arg=0xf06a40) at thread/qthread_unix.cpp:331
#7  0x00007f8a9a1afefc in start_thread (arg=0x7f8a855f8700) at pthread_create.c:304
#8  0x00007f8aa536c59d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#9  0x0000000000000000 in ?? ()

Thread 8 (Thread 0x7f8a77fff700 (LWP 2845)):
#0  __pthread_mutex_unlock_usercnt (mutex=<optimized out>, decr=<optimized out>) at pthread_mutex_unlock.c:37
#1  __pthread_mutex_unlock (mutex=0x1a141b8) at pthread_mutex_unlock.c:290
#2  0x00007f8a996a2f9a in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f8a996a3792 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f8a7ce23516 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#5  0x00007f8a996c82b6 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f8a9a1afefc in start_thread (arg=0x7f8a77fff700) at pthread_create.c:304
#7  0x00007f8aa536c59d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#8  0x0000000000000000 in ?? ()

Thread 7 (Thread 0x7f8a7e30c700 (LWP 3418)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f8aa24391ab in wait (time=18446744073709551615, this=0xfc0e20) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0xfaca10, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f8a9e232864 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x105d8b0, th=0x350c5a0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f8a9e234e0b in ThreadWeaver::WorkingHardState::applyForWork (this=0xfbf910, th=0x350c5a0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f8a9e233ccf in ThreadWeaver::ThreadRunHelper::run (this=0x7f8a7e30be00, parent=0x105d8b0, th=0x350c5a0) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007f8a9e233d5b in ThreadWeaver::Thread::run (this=0x350c5a0) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007f8aa2438d05 in QThreadPrivate::start (arg=0x350c5a0) at thread/qthread_unix.cpp:331
#8  0x00007f8a9a1afefc in start_thread (arg=0x7f8a7e30c700) at pthread_create.c:304
#9  0x00007f8aa536c59d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 6 (Thread 0x7f8a771d9700 (LWP 3419)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f8aa24391ab in wait (time=18446744073709551615, this=0xfc0e20) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0xfaca10, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f8a9e232864 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x105d8b0, th=0x1d8b840) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f8a9e234e0b in ThreadWeaver::WorkingHardState::applyForWork (this=0xfbf910, th=0x1d8b840) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f8a9e233ccf in ThreadWeaver::ThreadRunHelper::run (this=0x7f8a771d8e00, parent=0x105d8b0, th=0x1d8b840) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007f8a9e233d5b in ThreadWeaver::Thread::run (this=0x1d8b840) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007f8aa2438d05 in QThreadPrivate::start (arg=0x1d8b840) at thread/qthread_unix.cpp:331
#8  0x00007f8a9a1afefc in start_thread (arg=0x7f8a771d9700) at pthread_create.c:304
#9  0x00007f8aa536c59d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 5 (Thread 0x7f8a7cb46700 (LWP 3420)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f8aa24391ab in wait (time=18446744073709551615, this=0xfc0e20) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0xfaca10, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f8a9e232864 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x105d8b0, th=0x1e49500) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f8a9e234e0b in ThreadWeaver::WorkingHardState::applyForWork (this=0xfbf910, th=0x1e49500) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f8a9e233ccf in ThreadWeaver::ThreadRunHelper::run (this=0x7f8a7cb45e00, parent=0x105d8b0, th=0x1e49500) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007f8a9e233d5b in ThreadWeaver::Thread::run (this=0x1e49500) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007f8aa2438d05 in QThreadPrivate::start (arg=0x1e49500) at thread/qthread_unix.cpp:331
#8  0x00007f8a9a1afefc in start_thread (arg=0x7f8a7cb46700) at pthread_create.c:304
#9  0x00007f8aa536c59d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 4 (Thread 0x7f8a6ffff700 (LWP 3421)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f8aa24391ab in wait (time=18446744073709551615, this=0xfc0e20) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0xfaca10, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f8a9e232864 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x105d8b0, th=0xc00860) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f8a9e234e0b in ThreadWeaver::WorkingHardState::applyForWork (this=0xfbf910, th=0xc00860) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f8a9e233ccf in ThreadWeaver::ThreadRunHelper::run (this=0x7f8a6fffee00, parent=0x105d8b0, th=0xc00860) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007f8a9e233d5b in ThreadWeaver::Thread::run (this=0xc00860) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007f8aa2438d05 in QThreadPrivate::start (arg=0xc00860) at thread/qthread_unix.cpp:331
#8  0x00007f8a9a1afefc in start_thread (arg=0x7f8a6ffff700) at pthread_create.c:304
#9  0x00007f8aa536c59d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7f8a6e367700 (LWP 4610)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f8aa09f1c2c in ?? () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#2  0x00007f8aa09f1d59 in ?? () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#3  0x00007f8a9a1afefc in start_thread (arg=0x7f8a6e367700) at pthread_create.c:304
#4  0x00007f8aa536c59d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5  0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f8a6eb68700 (LWP 4611)):
#0  0x00007f8aa5360473 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f8a996a2f68 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f8a996a3429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f8aa254af3e in QEventDispatcherGlib::processEvents (this=0x16e7140, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007f8aa251ecf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f8aa251eef7 in QEventLoop::exec (this=0x7f8a6eb67de0, flags=...) at kernel/qeventloop.cpp:201
#6  0x00007f8aa243627f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#7  0x00007f8aa2438d05 in QThreadPrivate::start (arg=0xb9a590) at thread/qthread_unix.cpp:331
#8  0x00007f8a9a1afefc in start_thread (arg=0x7f8a6eb68700) at pthread_create.c:304
#9  0x00007f8aa536c59d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f8aa5a777a0 (LWP 2838)):
[KCrash Handler]
#6  0x00007f8aa243423c in QMutex::lock (this=0x1eefff0) at thread/qmutex.cpp:151
#7  0x00007f8aa2523999 in QCoreApplication::postEvent (receiver=0x294b190, event=0x7ab6c80, priority=0) at kernel/qcoreapplication.cpp:1196
#8  0x00007f8aa195e32a in QX11Data::xdndHandleFinished (this=<optimized out>, xe=0x7fff984b67e0, passive=false) at kernel/qdnd_x11.cpp:1254
#9  0x00007f8aa1950453 in QApplication::x11ClientMessage (this=<optimized out>, w=0xe884f0, event=<optimized out>, passive_only=<optimized out>) at kernel/qapplication_x11.cpp:3207
#10 0x00007f8aa194e98b in QApplication::x11ProcessEvent (this=0xa036d0, event=0x7fff984b67e0) at kernel/qapplication_x11.cpp:3832
#11 0x00007f8aa19774a2 in x11EventSourceDispatch (s=0xa0ba20, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#12 0x00007f8a996a2a5d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#13 0x00007f8a996a3258 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#14 0x00007f8a996a3429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#15 0x00007f8aa254aed6 in QEventDispatcherGlib::processEvents (this=0x995f40, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:422
#16 0x00007f8aa197710e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=<optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#17 0x00007f8aa251ecf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#18 0x00007f8aa251eef7 in QEventLoop::exec (this=0x7fff984b6bb0, flags=...) at kernel/qeventloop.cpp:201
#19 0x00007f8aa2523789 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1064
#20 0x00007f8aa566b1a3 in kdemain (argc=1, argv=0x7fff984b6f98) at ../../../../plasma/desktop/shell/main.cpp:120
#21 0x00007f8aa52aa30d in __libc_start_main (main=0x400640 <main(int, char**)>, argc=1, ubp_av=0x7fff984b6f98, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff984b6f88) at libc-start.c:226
#22 0x0000000000400671 in _start ()

This bug may be a duplicate of or related to bug 296467.

Possible duplicates by query: bug 296467, bug 296001, bug 294645, bug 292640, bug 286184.

Reported using DrKonqi