Bug 267189

Summary:	Plasma desktop crash - Kubuntu 11.04
Product:	[Unmaintained] plasma4	Reporter:	Britt Yazel <bwyazel>
Component:	general	Assignee:	Plasma Bugs List <plasma-bugs>
Status:	RESOLVED DOWNSTREAM
Severity:	crash	CC:	catcher, echidnaman, luis.zaldivar
Priority:	NOR
Version:	unspecified
Target Milestone:	---
Platform:	Ubuntu
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:
Attachments:	Backtrace Backtrace plasma Backtrace drkonqi backtrace systemsettings Backtrace kompare

Description Britt Yazel 2011-02-26 06:26:00 UTC

Application: plasma-desktop (0.4)
KDE Platform Version: 4.6.00 (4.6.0)
Qt Version: 4.7.1
Operating System: Linux 2.6.38-5-generic x86_64
Distribution: Ubuntu Natty (development branch)

-- Information about the crash:
While using standard use of my plasma desktop and looking through the application launcher, the desktop crashed causing my plasma desktop to have to restart.

-- Backtrace:
Application: Plasma Desktop Shell (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f853e86d7a0 (LWP 1335))]

Thread 4 (Thread 0x7f8517fff700 (LWP 1338)):
#0  0x00007f853e14b003 in __poll (fds=<value optimized out>, nfds=<value optimized out>, timeout=<value optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f8532b46180 in ?? () from /lib/libglib-2.0.so.0
#2  0x00007f8532b466a9 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#3  0x00007f853b56fa96 in QEventDispatcherGlib::processEvents (this=0x12df880, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:417
#4  0x00007f853b543f02 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f853b54413c in QEventLoop::exec (this=0x7f8517ffedb0, flags=...) at kernel/qeventloop.cpp:201
#6  0x00007f853b45b224 in QThread::exec (this=<value optimized out>) at thread/qthread.cpp:490
#7  0x00007f853b52645f in QInotifyFileSystemWatcherEngine::run (this=0x12df250) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f853b45d9de in QThreadPrivate::start (arg=0x12df250) at thread/qthread_unix.cpp:285
#9  0x00007f8533449d8c in start_thread (arg=0x7f8517fff700) at pthread_create.c:304
#10 0x00007f853e15817d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7f851655f700 (LWP 1339)):
#0  0x00007f853e14b003 in __poll (fds=<value optimized out>, nfds=<value optimized out>, timeout=<value optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f8532b46180 in ?? () from /lib/libglib-2.0.so.0
#2  0x00007f8532b466a9 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#3  0x00007f853b56fa96 in QEventDispatcherGlib::processEvents (this=0x13b75e0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:417
#4  0x00007f853b543f02 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f853b54413c in QEventLoop::exec (this=0x7f851655edb0, flags=...) at kernel/qeventloop.cpp:201
#6  0x00007f853b45b224 in QThread::exec (this=<value optimized out>) at thread/qthread.cpp:490
#7  0x00007f853b52645f in QInotifyFileSystemWatcherEngine::run (this=0x13b66b0) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f853b45d9de in QThreadPrivate::start (arg=0x13b66b0) at thread/qthread_unix.cpp:285
#9  0x00007f8533449d8c in start_thread (arg=0x7f851655f700) at pthread_create.c:304
#10 0x00007f853e15817d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f85128d4700 (LWP 1345)):
#0  0x00007f853e14b003 in __poll (fds=<value optimized out>, nfds=<value optimized out>, timeout=<value optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f8532b46180 in ?? () from /lib/libglib-2.0.so.0
#2  0x00007f8532b46a5a in g_main_loop_run () from /lib/libglib-2.0.so.0
#3  0x00007f85135acc74 in ?? () from /usr/lib/libgio-2.0.so.0
#4  0x00007f8532b6d394 in ?? () from /lib/libglib-2.0.so.0
#5  0x00007f8533449d8c in start_thread (arg=0x7f85128d4700) at pthread_create.c:304
#6  0x00007f853e15817d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#7  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f853e86d7a0 (LWP 1335)):
[KCrash Handler]
#6  QETWidget::translateXI2Event (this=0x1377bc0, event=<value optimized out>) at kernel/qapplication_x11.cpp:5250
#7  0x00007f853a97e9db in QApplication::x11ProcessEvent (this=0xb7ab40, event=0x7fffb57d53d0) at kernel/qapplication_x11.cpp:3932
#8  0x00007f853a9a6762 in x11EventSourceDispatch (s=0xba7f80, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#9  0x00007f8532b45c2d in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#10 0x00007f8532b46418 in ?? () from /lib/libglib-2.0.so.0
#11 0x00007f8532b466a9 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#12 0x00007f853b56fa3f in QEventDispatcherGlib::processEvents (this=0xb51250, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:415
#13 0x00007f853a9a63fe in QGuiEventDispatcherGlib::processEvents (this=<value optimized out>, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#14 0x00007f853b543f02 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#15 0x00007f853b54413c in QEventLoop::exec (this=0x7fffb57d56d0, flags=...) at kernel/qeventloop.cpp:201
#16 0x00007f853b54854b in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1009
#17 0x00007f853e4565f7 in kdemain (argc=1, argv=0x7fffb57d5a98) at ../../../../plasma/desktop/shell/main.cpp:118
#18 0x00007f853e090efe in __libc_start_main (main=0x400740 <main(int, char**)>, argc=1, ubp_av=0x7fffb57d5a98, init=<value optimized out>, fini=<value optimized out>, rtld_fini=<value optimized out>, stack_end=0x7fffb57d5a88) at libc-start.c:226
#19 0x0000000000400669 in _start ()

Reported using DrKonqi

Comment 1 Luis Zaldivar 2011-02-28 07:38:36 UTC

I can confirm this bug. 
Exactly the same stack trace, many kde apps are crashing since last updates from yesterday. 

~$ lsb_release -a 
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu Natty (development branch)
Release:        11.04
Codename:       natty


sudo aptitude show libqt4-core 
Package: libqt4-core                     
State: not installed
Version: 4:4.7.1-0ubuntu11


No foreign repos, just the 11.04 ones.

Comment 2 Sebastian 2011-03-03 10:25:15 UTC

I have this problem as well. This is EXTREMELY annoying. When I tried to report this bug using DrKonqui, it crashed. Every time. Then I tried to report the bug via apport-bug but that crashed as well. Even kmail crashes randomly but I don't know if there is a connection.
Luckily my browser doesn't seem to be affected.

Please look into this as fast as you can, as it makes working with KDE really difficult.

Comment 3 Sebastian 2011-03-03 10:29:12 UTC

Created attachment 57635 [details]
Backtrace

A backtrace I managed to save to file

Comment 4 Sebastian 2011-03-03 11:26:21 UTC

Created attachment 57637 [details]
Backtrace plasma

Comment 5 Sebastian 2011-03-03 11:26:51 UTC

Created attachment 57638 [details]
Backtrace drkonqi

Comment 6 Sebastian 2011-03-03 11:27:21 UTC

Created attachment 57639 [details]
backtrace systemsettings

Comment 7 Sebastian 2011-03-03 11:27:50 UTC

Created attachment 57640 [details]
Backtrace kompare

Comment 8 Sebastian 2011-03-03 11:29:46 UTC

A lot of other kde applications behave verry unstable as well. I added a few backtraces of them. Please let me know if you need anything else.

Comment 9 Jonathan Thomas 2011-03-03 13:24:27 UTC

This is an issue with a downstream XInput2 support patch to Qt. It's being tracked at https://bugs.launchpad.net/bugs/725959