[Bug 132014] 2.2.1 Crash on exit with a SIGSEGV (UPnP plugin)

[Ibrahim]

Public bug reported:

Hi,

I read a few bug reports about Ktorrent crashes, but I think this is a
new one.

Every time I shutdown Ktorrent I get a nasty Crash Handler Screen (the crash is nasty, not the screen ;) ).
As you can see from the Back Trace, it crashes when trying to unload the plugins. So I did some tests (a dozen shutdowns and ten crashes ...) and found out that the UPnP plugin is the culprit. It does not crash when I unload it in the Plugins list inside Ktorrent. Only when closing down Ktorrent.

I'm using the back ports so Ktorrent is version 2.2.1-0ubuntu1~feisty1.
I'm under Kubuntu Feisty. Any more information you might need ? Oh, one
more thing, it didn't crash with the previous version (2.2.0).

Here is the back trace :

(no debugging symbols found)
Using host libthread_db library "/lib/libthread_db.so.1".
(no debugging symbols found)
...
(no debugging symbols found)
[Thread debugging using libthread_db enabled]
[New Thread 47991739505792 (LWP 15101)]
(no debugging symbols found)
...
(no debugging symbols found)
[KCrash handler]
#5  0x0000000000000000 in ?? ()
#6  0x00002ba5eb6d4c82 in kt::PluginManager::unloadAll ()
   from /usr/lib/libktorrent-2.2.1.so
#7  0x0000000000430fdf in ?? ()
#8  0x00002ba5ec64150d in KMainWindow::shuttingDown ()
   from /usr/lib/libkdeui.so.4
#9  0x00002ba5ec75da4d in KMainWindow::qt_invoke ()
   from /usr/lib/libkdeui.so.4
#10 0x00002ba5ebc6e95e in KParts::MainWindow::qt_invoke ()
   from /usr/lib/libkparts.so.2
#11 0x000000000047bc0d in ?? ()
#12 0x0000000000433c00 in ?? ()
#13 0x00002ba5ee330ce2 in QObject::activate_signal ()
   from /usr/lib/libqt-mt.so.3
#14 0x00002ba5ee33187c in QObject::activate_signal ()
   from /usr/lib/libqt-mt.so.3
#15 0x00002ba5ecf9ada2 in KApplication::qt_emit ()
   from /usr/lib/libkdecore.so.4
#16 0x00002ba5ecf9adc9 in KUniqueApplication::qt_emit ()
   from /usr/lib/libkdecore.so.4
#17 0x0000000000436789 in ?? ()
#18 0x00002ba5ee330de6 in QObject::activate_signal ()
   from /usr/lib/libqt-mt.so.3
#19 0x00002ba5ee33187c in QObject::activate_signal ()
   from /usr/lib/libqt-mt.so.3
#20 0x00002ba5ee698501 in QApplication::aboutToQuit ()
   from /usr/lib/libqt-mt.so.3
#21 0x00002ba5ee2e57fd in QEventLoop::enterLoop () from /usr/lib/libqt-mt.so.3
#22 0x00002ba5ee2e5513 in QEventLoop::exec () from /usr/lib/libqt-mt.so.3
#23 0x00002ba5ee2cdc9c in QApplication::exec () from /usr/lib/libqt-mt.so.3
#24 0x000000000044c355 in ?? ()
#25 0x00002ba5f1df68e4 in __libc_start_main () from /lib/libc.so.6
#26 0x000000000042b939 in ?? ()
#27 0x00007fffbf6770c8 in ?? ()
#28 0x0000000000000000 in ?? ()

** Affects: ktorrent (Ubuntu)
     Importance: Undecided
         Status: New

-- 
2.2.1 Crash on exit with a SIGSEGV (UPnP plugin)
https://bugs.launchpad.net/bugs/132014
You received this bug notification because you are a member of Kubuntu
Team, which is a bug contact for ktorrent in ubuntu.