Application: plasma-desktop (0.4)
KDE Platform Version: 4.7.2 (4.7.2)
Qt Version: 4.7.4
Operating System: Linux 3.0.0-12-generic x86_64
Distribution: Ubuntu 11.10

-- Information about the crash:
- What I was doing when the application crashed:

For a while now I've been getting these seemingly random, multiple crashes with plasma-desktop, sometimes within minutes. I can see no pattern to these crashes, they sometimes occur when starting KDE, often when stopping KDE, and in between with no applications running.

plasma-desktop often restarts itself, but not always, so I call it manually.

This is using KDE 4.7.2 with Kubuntu, upgraded to 11.10 oneiric, and using the PPA kubuntu-ppa/backports for oneiric.

The crash can be reproduced some of the time.

-- Backtrace:
Application: Plasma Desktop Shell (plasma-desktop), signal: Segmentation fault
__libc_disable_asynccancel () at ../nptl/sysdeps/unix/sysv/linux/x86_64/cancellation.S:91
	in ../nptl/sysdeps/unix/sysv/linux/x86_64/cancellation.S
[Current thread is 1 (Thread 0x7fccf2a4b7c0 (LWP 2109))]

Thread 5 (Thread 0x7fcccc5e4700 (LWP 2110)):
#0  0x00007fccf2334773 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007fcce68bff68 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fcce68c0429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fccef526f3e in QEventDispatcherGlib::processEvents (this=0x30c3950, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007fccef4facf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007fccef4faef7 in QEventLoop::exec (this=0x7fcccc5e3cd0, flags=...) at kernel/qeventloop.cpp:201
#6  0x00007fccef41227f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#7  0x00007fccef4ddcbf in QInotifyFileSystemWatcherEngine::run (this=0x30cced0) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007fccef414d05 in QThreadPrivate::start (arg=0x30cced0) at thread/qthread_unix.cpp:331
#9  0x00007fcce3bd925a in ?? () from /usr/lib/nvidia-current/libGL.so.1
#10 0x00007fcce73ccefc in start_thread (arg=0x7fcccc5e4700) at pthread_create.c:304
#11 0x00007fccf234089d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#12 0x0000000000000000 in ?? ()

Thread 4 (Thread 0x7fccc3be2700 (LWP 2117)):
#0  0xffffffffff60017b in ?? ()
#1  0x00007fccc3be19f0 in ?? ()
#2  0x00007fffedb417e7 in ?? ()
Backtrace stopped: previous frame identical to this frame (corrupt stack?)

Thread 3 (Thread 0x7fccc191f700 (LWP 2118)):
#0  0xffffffffff60017b in ?? ()
#1  0x00007fccc191e9f0 in ?? ()
#2  0x00007fffedb417e7 in ?? ()
Backtrace stopped: previous frame identical to this frame (corrupt stack?)

Thread 2 (Thread 0x7fccbd3f9700 (LWP 2503)):
[KCrash Handler]
#6  0x00007fcce18dca08 in _nv007tls () from /usr/lib/nvidia-current/tls/libnvidia-tls.so.285.05.09
#7  0x00007fcce73ccce3 in __nptl_deallocate_tsd () at pthread_create.c:155
#8  0x00007fcce73ccf0a in start_thread (arg=0x7fccbd3f9700) at pthread_create.c:311
#9  0x00007fccf234089d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7fccf2a4b7c0 (LWP 2109)):
#0  __libc_disable_asynccancel () at ../nptl/sysdeps/unix/sysv/linux/x86_64/cancellation.S:91
#1  0x00007fccf2334787 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:89
#2  0x00007fcce83134f2 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007fcce8313a3f in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#4  0x00007fcce8313ac4 in xcb_writev () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#5  0x00007fccf0cac597 in _XSend () from /usr/lib/x86_64-linux-gnu/libX11.so.6
#6  0x00007fccf0cac909 in _XEventsQueued () from /usr/lib/x86_64-linux-gnu/libX11.so.6
#7  0x00007fccf0c9d19f in XEventsQueued () from /usr/lib/x86_64-linux-gnu/libX11.so.6
#8  0x00007fccee953f07 in x11EventSourcePrepare (s=0x26306a0, timeout=<optimized out>) at kernel/qguieventdispatcher_glib.cpp:77
#9  0x00007fcce68beff2 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007fcce68bfdfd in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#11 0x00007fcce68c0429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#12 0x00007fccef526ed6 in QEventDispatcherGlib::processEvents (this=0x2613260, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:422
#13 0x00007fccee95407e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=<optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#14 0x00007fccef4facf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#15 0x00007fccef4faef7 in QEventLoop::exec (this=0x7fffedb2a2e0, flags=...) at kernel/qeventloop.cpp:201
#16 0x00007fccef4ff789 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1064
#17 0x00007fccf263f1a3 in kdemain (argc=1, argv=0x7fffedb2a6c8) at ../../../../plasma/desktop/shell/main.cpp:120
#18 0x00007fccf228030d in __libc_start_main (main=0x400640 <main(int, char**)>, argc=1, ubp_av=0x7fffedb2a6c8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffedb2a6b8) at libc-start.c:226
#19 0x0000000000400671 in _start ()

Reported using DrKonqi