Application: plasma-desktop (0.4)
KDE Platform Version: 4.8.1 (4.8.1)
Qt Version: 4.8.0
Operating System: Linux 3.2.0-18-generic x86_64
Distribution: Ubuntu precise (development branch)

-- Information about the crash:
When I added the "system monitor" plasmoid to my panel, the entire plasma workspace crashed.  This is on Kubuntu 12.04 beta, 64 bits.

-- Backtrace:
Application: Plasma Desktop Shell (plasma-desktop), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f0806296780 (LWP 9778))]

Thread 5 (Thread 0x7f07e6b7b700 (LWP 9784)):
#0  0x00007f0805b5a34d in read () at ../sysdeps/unix/syscall-template.S:82
#1  0x00007f07f9d5674f in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f07f9d1bbfd in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f07f9d1c0d6 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f07f9d1c264 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f0802d3aa76 in QEventDispatcherGlib::processEvents (this=0x7f07d40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#6  0x00007f0802d0a2d2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#7  0x00007f0802d0a527 in QEventLoop::exec (this=0x7f07e6b7add0, flags=...) at kernel/qeventloop.cpp:204
#8  0x00007f0802c09f97 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#9  0x00007f0802cea06f in QInotifyFileSystemWatcherEngine::run (this=0x1339460) at io/qfilesystemwatcher_inotify.cpp:248
#10 0x00007f0802c0cfbb in QThreadPrivate::start (arg=0x1339460) at thread/qthread_unix.cpp:298
#11 0x00007f07fa620e9a in start_thread (arg=0x7f07e6b7b700) at pthread_create.c:308
#12 0x00007f0805b6774d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#13 0x0000000000000000 in ?? ()

Thread 4 (Thread 0x7f07e558e700 (LWP 9785)):
#0  0x00007f0805b5bd93 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f07f9d1c136 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f07f9d1c264 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f0802d3aa76 in QEventDispatcherGlib::processEvents (this=0x7f07cc0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#4  0x00007f0802d0a2d2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f0802d0a527 in QEventLoop::exec (this=0x7f07e558ddd0, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007f0802c09f97 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#7  0x00007f0802cea06f in QInotifyFileSystemWatcherEngine::run (this=0xbf82a0) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f0802c0cfbb in QThreadPrivate::start (arg=0xbf82a0) at thread/qthread_unix.cpp:298
#9  0x00007f07fa620e9a in start_thread (arg=0x7f07e558e700) at pthread_create.c:308
#10 0x00007f0805b6774d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7f07e4aa8700 (LWP 9786)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f07ffaef212 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#2  0x00007f07ffaef249 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#3  0x00007f07fa620e9a in start_thread (arg=0x7f07e4aa8700) at pthread_create.c:308
#4  0x00007f0805b6774d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5  0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f07d8889700 (LWP 9791)):
#0  0x00007f0805b5a34d in read () at ../sysdeps/unix/syscall-template.S:82
#1  0x00007f07f9d5674f in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f07f9d1bbfd in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f07f9d1c0d6 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f07f9d1c59a in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f07d937d426 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#6  0x00007f07f9d3d7f5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007f07fa620e9a in start_thread (arg=0x7f07d8889700) at pthread_create.c:308
#8  0x00007f0805b6774d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#9  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f0806296780 (LWP 9778)):
[KCrash Handler]
#6  QMutex::lock (this=0x25de) at thread/qmutex.cpp:150
#7  0x00007f0802d0eb19 in QCoreApplication::postEvent (receiver=0x2eaf410, event=0x2d419a0, priority=0) at kernel/qcoreapplication.cpp:1281
#8  0x00007f080211d59a in QX11Data::xdndHandleFinished (this=<optimized out>, xe=0x7fffe3b1c8e0, passive=false) at kernel/qdnd_x11.cpp:1251
#9  0x00007f080210f493 in QApplication::x11ClientMessage (this=<optimized out>, w=0x2895bd0, event=<optimized out>, passive_only=<optimized out>) at kernel/qapplication_x11.cpp:3242
#10 0x00007f080210da0b in QApplication::x11ProcessEvent (this=0xb8c400, event=0x7fffe3b1c8e0) at kernel/qapplication_x11.cpp:3871
#11 0x00007f0802136e22 in x11EventSourceDispatch (s=0xba7c90, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#12 0x00007f07f9d1bdda in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#13 0x00007f07f9d1c1a0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#14 0x00007f07f9d1c264 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#15 0x00007f0802d3aa0f in QEventDispatcherGlib::processEvents (this=0xb34ad0, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#16 0x00007f0802136aae in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#17 0x00007f0802d0a2d2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#18 0x00007f0802d0a527 in QEventLoop::exec (this=0x7fffe3b1cc80, flags=...) at kernel/qeventloop.cpp:204
#19 0x00007f0802d0f5b7 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1148
#20 0x00007f0805e73a13 in kdemain (argc=1, argv=0x7fffe3b1d068) at ../../../../plasma/desktop/shell/main.cpp:120
#21 0x00007f0805a9876d in __libc_start_main (main=0x400640 <main(int, char**)>, argc=1, ubp_av=0x7fffe3b1d068, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffe3b1d058) at libc-start.c:226
#22 0x0000000000400671 in _start ()

Possible duplicates by query: bug 294645, bug 292640, bug 286184, bug 285852, bug 282110.

Reported using DrKonqi