Bug 308296

Summary:	Plasma desktop crashes after running for extended periods of time
Product:	[Unmaintained] plasma4	Reporter:	Jon Clark <clarjon1>
Component:	general	Assignee:	Plasma Bugs List <plasma-bugs>
Status:	RESOLVED UNMAINTAINED
Severity:	crash	CC:	cfeck, clarjon1, tom
Priority:	NOR
Version First Reported In:	unspecified
Target Milestone:	---
Platform:	Ubuntu
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:

Description Jon Clark 2012-10-12 14:04:11 UTC

Application: plasma-desktop (0.4)
KDE Platform Version: 4.8.5 (4.8.5)
Qt Version: 4.8.1
Operating System: Linux 3.2.0-31-generic x86_64
Distribution: Linux Mint 13 Maya

-- Information about the crash:
- What I was doing when the application crashed:
I was using the desktop as normal. Web browsing, IRC, skype, and so forth.  
This type of crash happens nearly every day. It happens most commonly overnight, when I allow the system to idle, however it does happen whilst using the desktop, without any warning or system slowdown.

- Unusual behavior I noticed:
None. Happens seemingly at random, when system has been running for extended periods of time.  System can either be idle or in use.

The crash can be reproduced every time.

-- Backtrace:
Application: Plasma Desktop Shell (plasma-desktop), signal: Aborted
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f5becd02780 (LWP 1926))]

Thread 5 (Thread 0x7f5bc714e700 (LWP 1928)):
#0  __pthread_mutex_unlock_usercnt (mutex=<optimized out>, decr=<optimized out>) at pthread_mutex_unlock.c:49
#1  __pthread_mutex_unlock (mutex=0x7f5bc0000a60) at pthread_mutex_unlock.c:290
#2  0x00007f5be07c35d1 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f5be0787b3d in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f5be0787fd6 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f5be0788164 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f5be97a8426 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#7  0x00007f5be9777c82 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#8  0x00007f5be9777ed7 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#9  0x00007f5be9676fa7 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#10 0x00007f5be97579ff in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#11 0x00007f5be9679fcb in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#12 0x00007f5be108ce9a in start_thread (arg=0x7f5bc714e700) at pthread_create.c:308
#13 0x00007f5bec5e2dbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#14 0x0000000000000000 in ?? ()

Thread 4 (Thread 0x7f5bc5b74700 (LWP 1929)):
#0  0x00007f5be96d0b99 in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#1  0x00007f5be97a8b8d in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#2  0x00007f5be97a8ec3 in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#3  0x00007f5be97a797c in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#4  0x00007f5be97a7a25 in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#5  0x00007f5be0787846 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f5be0787f5b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007f5be0788164 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#8  0x00007f5be97a8426 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#9  0x00007f5be9777c82 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#10 0x00007f5be9777ed7 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#11 0x00007f5be9676fa7 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#12 0x00007f5be97579ff in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#13 0x00007f5be9679fcb in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#14 0x00007f5be108ce9a in start_thread (arg=0x7f5bc5b74700) at pthread_create.c:308
#15 0x00007f5bec5e2dbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#16 0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7f5bbe8d4700 (LWP 1933)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f5be655c222 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#2  0x00007f5be655c259 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#3  0x00007f5be108ce9a in start_thread (arg=0x7f5bbe8d4700) at pthread_create.c:308
#4  0x00007f5bec5e2dbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5  0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f5bb35df700 (LWP 1939)):
#0  0x00007f5bec5d7403 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f5be0788036 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f5be078849a in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f5bbc11d406 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#4  0x00007f5be07a99e5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f5be108ce9a in start_thread (arg=0x7f5bb35df700) at pthread_create.c:308
#6  0x00007f5bec5e2dbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#7  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f5becd02780 (LWP 1926)):
[KCrash Handler]
#6  0x00007f5bec525445 in __GI_raise (sig=<optimized out>) at ../nptl/sysdeps/unix/sysv/linux/raise.c:64
#7  0x00007f5bec528bab in __GI_abort () at abort.c:91
#8  0x00007f5be86e769d in __gnu_cxx::__verbose_terminate_handler() () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#9  0x00007f5be86e5846 in ?? () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#10 0x00007f5be86e5873 in std::terminate() () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#11 0x00007f5be86e59b6 in __cxa_rethrow () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#12 0x00007f5be977816c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#13 0x00007f5be977cf67 in QCoreApplication::exec() () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#14 0x00007f5bec8efa13 in kdemain () from /usr/lib/kde4/libkdeinit/libkdeinit4_plasma-desktop.so
#15 0x00007f5bec51076d in __libc_start_main (main=0x400640, argc=1, ubp_av=0x7fff1e28eea8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff1e28ee98) at libc-start.c:226
#16 0x0000000000400671 in _start ()

Possible duplicates by query: bug 307941, bug 307938, bug 307621, bug 307597, bug 307561.

Reported using DrKonqi

Comment 1 Christoph Feck 2012-10-12 14:24:09 UTC

If this is reproducible, please try to find out which widget/applet is responsible, by removing them.

Comment 2 Jon Clark 2012-10-12 14:30:15 UTC

Will do. I've removed the widgets ( lcdweather, hardware temperature , and folder view )
I will report back with another backtrace the next time this happens.

Comment 3 Martin Flöser 2013-05-29 16:20:02 UTC

Thank you for this crash report and helping to improve our software. Unfortunately we were not able to work on this specific report yet. Nowadays the version this crash was reported against is no longer maintained and this makes it very difficult to work on this report as the source code might have changed and the information in the backtrace is no longer valid. 

Also it is quite likely that this problem got fixed in a later version. Crash reports are very often reported multiple times. 

If you are able to reproduce this crash with the latest version of KDE Plasma (4.10.3) please reopen this report and adjust the version information in the dropdown above and please also include a new backtrace as generated by the crash reporting tool. Please also make sure that the steps on how to reproduce the crash are precise and correct. Thank you!