Bug 174920

Summary:	Crashed after configuring scanfolder plug-in
Product:	[Unmaintained] kio	Reporter:	Xenophon <email.xenophon>
Component:	general	Assignee:	David Faure <faure>
Status:	RESOLVED FIXED
Severity:	crash	CC:	joris.guisson
Priority:	NOR
Version:	4.1
Target Milestone:	---
Platform:	unspecified
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:

Description Xenophon 2008-11-12 06:02:22 UTC

Version:           3.1.2 (using 4.1.3 (KDE 4.1.3), Kubuntu packages)
Compiler:          cc
OS:                Linux (i686) release 2.6.27-7-generic

Enabled scanfolder, configured it and clicked save and *boom*

Application: KTorrent (ktorrent), signal SIGABRT
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[Thread debugging using libthread_db enabled]
[New Thread 0xb5d796c0 (LWP 8431)]
[New Thread 0xb2dadb90 (LWP 8473)]
[New Thread 0xb42a5b90 (LWP 8472)]
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[KCrash handler]
#6  0xb7f68430 in __kernel_vsyscall ()
#7  0xb6641880 in raise () from /lib/tls/i686/cmov/libc.so.6
#8  0xb6643248 in abort () from /lib/tls/i686/cmov/libc.so.6
#9  0xb736a795 in qt_message_output () from /usr/lib/libQtCore.so.4
#10 0xb736a872 in qFatal () from /usr/lib/libQtCore.so.4
#11 0xb736a915 in qt_assert () from /usr/lib/libQtCore.so.4
#12 0xb7d5a608 in KDirLister::Private::CachedItemsJob::done ()
   from /usr/lib/libkio.so.5
#13 0xb7d5a7a5 in KDirLister::Private::CachedItemsJob::qt_metacall ()
   from /usr/lib/libkio.so.5
#14 0xb7470bfb in QMetaCallEvent::placeMetaCall ()
   from /usr/lib/libQtCore.so.4
#15 0xb7472771 in QObject::event () from /usr/lib/libQtCore.so.4
#16 0xb6b538ec in QApplicationPrivate::notify_helper ()
   from /usr/lib/libQtGui.so.4
#17 0xb6b5b76e in QApplication::notify () from /usr/lib/libQtGui.so.4
#18 0xb79a1b2d in KApplication::notify () from /usr/lib/libkdeui.so.5
#19 0xb7462e61 in QCoreApplication::notifyInternal ()
   from /usr/lib/libQtCore.so.4
#20 0xb7463ae5 in QCoreApplicationPrivate::sendPostedEvents ()
   from /usr/lib/libQtCore.so.4
#21 0xb7463cdd in QCoreApplication::sendPostedEvents ()
   from /usr/lib/libQtCore.so.4
#22 0xb748d82f in ?? () from /usr/lib/libQtCore.so.4
#23 0xb614f6f8 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#24 0xb6152da3 in ?? () from /usr/lib/libglib-2.0.so.0
#25 0xb6152f61 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#26 0xb748d478 in QEventDispatcherGlib::processEvents ()
   from /usr/lib/libQtCore.so.4
#27 0xb6bedee5 in ?? () from /usr/lib/libQtGui.so.4
#28 0xb746152a in QEventLoop::processEvents () from /usr/lib/libQtCore.so.4
#29 0xb74616ea in QEventLoop::exec () from /usr/lib/libQtCore.so.4
#30 0xb76938f8 in KJob::exec () from /usr/lib/libkdecore.so.5
#31 0xb7b6d39f in bt::MakeDir () from /usr/lib/libbtcore.so.7
#32 0xb7bc3003 in bt::TorrentControl::setupDirs ()
   from /usr/lib/libbtcore.so.7
#33 0xb7bca683 in bt::TorrentControl::initInternal ()
   from /usr/lib/libbtcore.so.7
#34 0xb7bcb01f in bt::TorrentControl::init () from /usr/lib/libbtcore.so.7
#35 0x0806ef44 in _start ()
#0  0xb7f68430 in __kernel_vsyscall ()

Comment 1 Joris Guisson 2008-11-13 10:19:07 UTC

Assert in KIO library, so I'm gonna reassign it to the kio people

Comment 2 David Faure 2008-11-27 13:43:26 UTC

The assert seems to be fixed, but when I try this I get an infinite recursion openUrl -> emitChanges -> ktorrent's newItems slot -> openUrl.
Fixing this in KDirLister.

Comment 3 David Faure 2008-11-27 13:45:23 UTC

SVN commit 889716 by dfaure:

Fix infinite recursion and crash when the slot connected to newItems calls openUrl, like ktorrent's scanfolder plugin does.
  - d->changes must be set to NONE before the emits
  - the iteration over d->lstDirs must be done with Q_FOREACH to iterate over a copy of the list
BUG: 174920


 M  +10 -16    kdirlister.cpp  


WebSVN link: http://websvn.kde.org/?view=rev&revision=889716