Application: nepomukservicestub (0.1.0) KDE Platform Version: 4.9.3 (Compiled from sources) Qt Version: 4.8.3 Operating System: Linux 3.5.0-18-generic i686 Distribution: Ubuntu 12.10 -- Information about the crash: - What I was doing when the application crashed: Nepomuk crashed when adding new folders to be indexed. I could not reproduce his crash afterwards. -- Backtrace: Application: Nepomuk Service Stub (nepomukservicestub), signal: Aborted Using host libthread_db library "/lib/i386-linux-gnu/libthread_db.so.1". [Current thread is 1 (Thread 0xb5448740 (LWP 27118))] Thread 3 (Thread 0xb2405b40 (LWP 27119)): #0 0xb7797424 in __kernel_vsyscall () #1 0xb5f5e3eb in read () at ../sysdeps/unix/syscall-template.S:82 #2 0xb5dc8f5e in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0 #3 0xb5d8883b in g_main_context_check () from /lib/i386-linux-gnu/libglib-2.0.so.0 #4 0xb5d88c92 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0 #5 0xb5d88e61 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0 #6 0xb763599f in QEventDispatcherGlib::processEvents (this=0xb1b00468, flags=...) at kernel/qeventdispatcher_glib.cpp:426 #7 0xb760226c in QEventLoop::processEvents (this=this@entry=0xb2405258, flags=...) at kernel/qeventloop.cpp:149 #8 0xb7602561 in QEventLoop::exec (this=0xb2405258, flags=...) at kernel/qeventloop.cpp:204 #9 0xb74ed66c in QThread::exec (this=this@entry=0xa1a58f8) at thread/qthread.cpp:501 #10 0xb74ed7cb in QThread::run (this=0xa1a58f8) at thread/qthread.cpp:568 #11 0xb74f0a58 in QThreadPrivate::start (arg=0xa1a58f8) at thread/qthread_unix.cpp:338 #12 0xb5e6bd4c in start_thread (arg=0xb2405b40) at pthread_create.c:308 #13 0xb5f6ed3e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130 Thread 2 (Thread 0xb1affb40 (LWP 27289)): #0 0xb7797424 in __kernel_vsyscall () #1 0xb5f605f0 in __GI___poll (fds=0xb11022b0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:87 #2 0xb5d9774b in g_poll () from /lib/i386-linux-gnu/libglib-2.0.so.0 #3 0xb5d88d00 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0 #4 0xb5d88e61 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0 #5 0xb763599f in QEventDispatcherGlib::processEvents (this=0xb1100468, flags=...) at kernel/qeventdispatcher_glib.cpp:426 #6 0xb760226c in QEventLoop::processEvents (this=this@entry=0xb1aff228, flags=...) at kernel/qeventloop.cpp:149 #7 0xb7602561 in QEventLoop::exec (this=0xb1aff228, flags=...) at kernel/qeventloop.cpp:204 #8 0xb74ed66c in QThread::exec (this=0xa1a1bf0) at thread/qthread.cpp:501 #9 0xb75e07bd in QInotifyFileSystemWatcherEngine::run (this=0xa1a1bf0) at io/qfilesystemwatcher_inotify.cpp:248 #10 0xb74f0a58 in QThreadPrivate::start (arg=0xa1a1bf0) at thread/qthread_unix.cpp:338 #11 0xb5e6bd4c in start_thread (arg=0xb1affb40) at pthread_create.c:308 #12 0xb5f6ed3e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130 Thread 1 (Thread 0xb5448740 (LWP 27118)): [KCrash Handler] #7 0xb7797424 in __kernel_vsyscall () #8 0xb5eae1df in __GI_raise (sig=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:64 #9 0xb5eb1825 in __GI_abort () at abort.c:91 #10 0xb74e572c in qt_message_output (msgType=QtFatalMsg, buf=0xae2a7b8 "ASSERT: \"path != \"/\" || event->mask & EventIgnored || event->mask & EventUnmount\" in file /home/lacsilva/Development/nepomuk.d/nepomuk-core/services/filewatch/kinotify.cpp, line 351") at global/qglobal.cpp:2290 #11 0xb74e5b39 in qt_message (msgType=QtFatalMsg, msg=0xb766f598 "ASSERT: \"%s\" in file %s, line %d", ap=0xbfb05f94 "\244\275E\262\214\274E\262_\001") at global/qglobal.cpp:2336 #12 0xb74e5c58 in qFatal (msg=msg@entry=0xb766f598 "ASSERT: \"%s\" in file %s, line %d") at global/qglobal.cpp:2519 #13 0xb74e5ce5 in qt_assert (assertion=0xb245bda4 "path != \"/\" || event->mask & EventIgnored || event->mask & EventUnmount", file=0xb245bc8c "/home/lacsilva/Development/nepomuk.d/nepomuk-core/services/filewatch/kinotify.cpp", line=351) at global/qglobal.cpp:2016 #14 0xb245531f in KInotify::slotEvent (this=this@entry=0xa2379b0, socket=13) at /home/lacsilva/Development/nepomuk.d/nepomuk-core/services/filewatch/kinotify.cpp:351 #15 0xb2455f81 in KInotify::qt_static_metacall (_o=0xa2379b0, _c=QMetaObject::InvokeMetaMethod, _id=14, _a=0xbfb06178) at /home/lacsilva/Development/nepomuk.d/nepomuk-core/BUILD/services/filewatch/kinotify.moc:95 #16 0xb761bed6 in QMetaObject::activate (sender=0xa2528a8, m=0xb7768458 <QSocketNotifier::staticMetaObject>, local_signal_index=0, argv=0xbfb06178) at kernel/qobject.cpp:3547 #17 0xb766c875 in QSocketNotifier::activated (this=0xa2528a8, _t1=13) at .moc/release-shared/moc_qsocketnotifier.cpp:103 #18 0xb7622a3f in QSocketNotifier::event (this=0xa2528a8, e=0xbfb065b4) at kernel/qsocketnotifier.cpp:317 #19 0xb624f39c in QApplicationPrivate::notify_helper (this=0x9fc93f8, receiver=0xa2528a8, e=0xbfb065b4) at kernel/qapplication.cpp:4562 #20 0xb6253daf in QApplication::notify (this=0xbfb065b4, receiver=0xa2528a8, e=0xbfb065b4) at kernel/qapplication.cpp:3944 #21 0xb6eebe91 in KApplication::notify (this=0xbfb06924, receiver=0xa2528a8, event=0xbfb065b4) at ../../kdeui/kernel/kapplication.cpp:311 #22 0xb760378e in QCoreApplication::notifyInternal (this=0xbfb06924, receiver=0xa2528a8, event=0xbfb065b4) at kernel/qcoreapplication.cpp:915 #23 0xb7635138 in sendEvent (event=0xbfb065b4, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231 #24 socketNotifierSourceDispatch (source=0x9fc4550) at kernel/qeventdispatcher_glib.cpp:110 #25 0xb5d889e3 in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0 #26 0xb5d88d80 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0 #27 0xb5d88e61 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0 #28 0xb7635981 in QEventDispatcherGlib::processEvents (this=0x9fa65d0, flags=...) at kernel/qeventdispatcher_glib.cpp:424 #29 0xb63059aa in QGuiEventDispatcherGlib::processEvents (this=0x9fa65d0, flags=...) at kernel/qguieventdispatcher_glib.cpp:204 #30 0xb760226c in QEventLoop::processEvents (this=this@entry=0xbfb067f8, flags=...) at kernel/qeventloop.cpp:149 #31 0xb7602561 in QEventLoop::exec (this=0xbfb067f8, flags=...) at kernel/qeventloop.cpp:204 #32 0xb7607cba in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1187 #33 0xb624cfc4 in QApplication::exec () at kernel/qapplication.cpp:3823 #34 0x0804b479 in main (argc=2, argv=0xbfb06a34) at /home/lacsilva/Development/nepomuk.d/nepomuk-core/servicestub/main.cpp:177 Possible duplicates by query: bug 307621, bug 302243, bug 298008, bug 298006, bug 298005. Reported using DrKonqi
Are you really running 4.9.3? From the backtrace it looks like the assert was one only added for 4.10
I should have said this before. I am using binary packages from 4.9.3 from kubuntu but I compiled the nepomuk stack (soprano, nepomuk-core) from master.
Ok, thanks. You can 'fix' this by compiling the packages in release build: pass -DCMAKE_BUILD_TYPE=Release to cmake (this should also make nepomuk much faster). Aside from that, it is a little bit strange the assert triggered, and I'd like to understand why. (You aren't trying to index '/', are you? There are other reasons that won't work too well. ) The only other possibility I can think of offhand is that EventQueueOverflow is happening. Were you moving a lot of files around at the same time as adding the watches?
Created attachment 75741 [details] Patch Could you try the attached patch? If the bug triggers again, it should give us some more idea why. Thanks
> (You aren't trying to index '/', are you? There are other reasons that won't work too well. ) No, I am and was not trying to index / I will be trying this patch in the next few days.
Ok! I tried the patch and I seem to not have had this crash anymore. However, I cannot reproduce the crash without the patch either. It seems to have been a one-time thing. Answering Comment #3, no, I was not indexing '/' or moving files at the time. However, I was adding a hidden folder to the index which was implicitly excluded by the default eclusion rules.
Please reopen this bug if it happens again. For now, I'm marking it as FIXED.