User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:10.0.1) Gecko/20100101 Firefox/10.0.1 Build Identifier: The assertion triggered is the following: Q_ASSERT(dev->backendObject()!=0); The stack seem to show that the device is one from /etc/mtab (it's a real file not a link to /proc/self/mounts), the disk that change often are the network ones, mounted by `automount` with a timeout of 360s After one there were 91 drkonqi windows open, the stacktraces are all the same, see attached one Reproducible: Always Actual Results: pletora of drkonqi windows There are a lot of bug similar to this one (293914, 160221) but none of them fitted totally, thus reporting a new one (and Drkonqi is confused by the new bugzilla theme). Every week I do rebuild the whole kde in gentoo from git, this problem presented itself after a build at 2012-03-03, previous build 2012-02-25 was working fine. example mtab: rootfs / rootfs rw 0 0 proc /proc proc rw,relatime 0 0 sysfs /sys sysfs rw,nosuid,nodev,noexec,relatime 0 0 devtmpfs /dev devtmpfs rw,nosuid,relatime,size=4084352k,nr_inodes=1021088,mode=755 0 0 devpts /dev/pts devpts rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000 0 0 tmpfs /dev/shm tmpfs rw,nosuid,nodev,noexec,relatime 0 0 /dev/md1 / ext4 rw,nodiratime,relatime,commit=0 0 0 tmpfs /run tmpfs rw,nosuid,nodev,relatime,mode=755 0 0 rc-svcdir /usr/lib64/rc/init.d tmpfs rw,nosuid,nodev,noexec,relatime,size=1024k,mode=755 0 0 debugfs /sys/kernel/debug debugfs rw,nosuid,nodev,noexec,relatime 0 0 configfs /sys/kernel/config configfs rw,nosuid,nodev,noexec,relatime 0 0 cgroup_root /sys/fs/cgroup tmpfs rw,nosuid,nodev,noexec,relatime,size=10240k,mode=755 0 0 openrc /sys/fs/cgroup/openrc cgroup rw,nosuid,nodev,noexec,relatime,release_agent=/lib64/rc/sh/cgroup-release-agent.sh,name=openrc 0 0 cpuset /sys/fs/cgroup/cpuset cgroup rw,nosuid,nodev,noexec,relatime,cpuset 0 0 cpu /sys/fs/cgroup/cpu cgroup rw,nosuid,nodev,noexec,relatime,cpu 0 0 cpuacct /sys/fs/cgroup/cpuacct cgroup rw,nosuid,nodev,noexec,relatime,cpuacct 0 0 memory /sys/fs/cgroup/memory cgroup rw,nosuid,nodev,noexec,relatime,memory 0 0 devices /sys/fs/cgroup/devices cgroup rw,nosuid,nodev,noexec,relatime,devices 0 0 freezer /sys/fs/cgroup/freezer cgroup rw,nosuid,nodev,noexec,relatime,freezer 0 0 fusectl /sys/fs/fuse/connections fusectl rw,relatime 0 0 /dev/md2 /home ext4 rw,nodiratime,relatime,commit=30,nodelalloc,errors=remount-ro,data=writeback,commit=0 0 0 /dev/md4 /srv ext4 rw,nodiratime,relatime,commit=30,nodelalloc,errors=remount-ro,data=writeback,commit=0 0 0 shm /dev/shm tmpfs rw,noexec,nosuid,nodev 0 0 /dev/md3 /vservers ext4 rw,nodiratime,relatime,commit=30,nodelalloc,errors=remount-ro,data=writeback,commit=0 0 0 //192.168.42.21/SRC /mnt/autonfs/sources cifs rw 0 0
Created attachment 69322 [details] knotify4-20120306-094411.kcrash
Pasting attachment from comment #1 inline: Application: KNotify (knotify4), signal: Aborted Using host libthread_db library "/lib64/libthread_db.so.1". 82 T_PSEUDO (SYSCALL_SYMBOL, SYSCALL_NAME, SYSCALL_NARGS) [Current thread is 1 (Thread 0x33bea4eb7a0 (LWP 16921))] Thread 2 (Thread 0x33bd035c700 (LWP 16922)): #0 0x0000033be69ffc63 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87 #1 0x0000033be33f95f8 in g_main_context_poll (n_fds=1, fds=0x10be1b23d0, timeout=-1, context=0x10be1b3b70, priority=<optimized out>) at gmain.c:3402 #2 g_main_context_iterate (context=0x10be1b3b70, block=<optimized out>, dispatch=1, self=<optimized out>) at gmain.c:3084 #3 0x0000033be33f9b0d in g_main_context_iteration (context=0x10be1b3b70, may_block=1) at gmain.c:3152 #4 0x0000033be7850656 in QEventDispatcherGlib::processEvents (this=0x10be1b2700, flags=...) at kernel/qeventdispatcher_glib.cpp:426 #5 0x0000033be781c8c2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149 #6 0x0000033be781cb07 in QEventLoop::exec (this=0x33bd035bda0, flags=...) at kernel/qeventloop.cpp:204 #7 0x0000033be770e098 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501 #8 0x0000033be77fa5d3 in QInotifyFileSystemWatcherEngine::run (this=0x10be154c20) at io/qfilesystemwatcher_inotify.cpp:248 #9 0x0000033be7710fad in QThreadPrivate::start (arg=0x10be154c20) at thread/qthread_unix.cpp:298 #10 0x0000033be7476c70 in start_thread (arg=0x33bd035c700) at pthread_create.c:301 #11 0x0000033be6a0764d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115 Thread 1 (Thread 0x33bea4eb7a0 (LWP 16921)): [KCrash Handler] #6 0x0000033be6967a45 in __GI_raise (sig=<optimized out>) at ../nptl/sysdeps/unix/sysv/linux/raise.c:64 #7 0x0000033be6968ebb in __GI_abort () at abort.c:93 #8 0x0000033be77063d4 in qt_message_output (msgType=<optimized out>, buf=<optimized out>) at global/qglobal.cpp:2252 #9 0x0000033be770655f in qt_message(enum QtMsgType, const char *, typedef __va_list_tag __va_list_tag *) (msgType=QtFatalMsg, msg=0x33be7889e98 "ASSERT: \"%s\" in file %s, line %d", ap=0x3a5170e6bb8) at global/qglobal.cpp:2298 #10 0x0000033be7706704 in qFatal (msg=<optimized out>) at global/qglobal.cpp:2481 #11 0x0000033be95d9088 in Solid::DeviceManagerPrivate::_k_deviceRemoved (this=0x10be154780, udi=...) at /usr/src/debug/kde-base/kdelibs-9999/kdelibs-9999/solid/solid/devicemanager.cpp:201 #12 0x0000033be7834117 in QMetaObject::activate (sender=0x10be1559f0, m=<optimized out>, local_signal_index=<optimized out>, argv=0x3a5170e6df0) at kernel/qobject.cpp:3547 #13 0x0000033be95f8555 in Solid::Ifaces::DeviceManager::deviceRemoved (this=<optimized out>, _t1=...) at /usr/src/debug/kde-base/kdelibs-9999/kdelibs-9999_build/solid/solid/ifaces/devicemanager.moc:108 #14 0x0000033be9655c93 in Solid::Backends::Fstab::FstabManager::_k_updateDeviceList (this=0x10be1559f0) at /usr/src/debug/kde-base/kdelibs-9999/kdelibs-9999/solid/solid/backends/fstab/fstabmanager.cpp:126 #15 0x0000033be9655d5a in Solid::Backends::Fstab::FstabManager::onMtabChanged (this=0x10be1559f0) at /usr/src/debug/kde-base/kdelibs-9999/kdelibs-9999/solid/solid/backends/fstab/fstabmanager.cpp:136 #16 0x0000033be7834117 in QMetaObject::activate (sender=0x10be1545c0, m=<optimized out>, local_signal_index=<optimized out>, argv=0x0) at kernel/qobject.cpp:3547 #17 0x0000033be965a048 in Solid::Backends::Fstab::FstabWatcher::onFileChanged (this=0x10be1545c0, path=...) at /usr/src/debug/kde-base/kdelibs-9999/kdelibs-9999/solid/solid/backends/fstab/fstabwatcher.cpp:104 #18 0x0000033be7834117 in QMetaObject::activate (sender=0x10be1554c0, m=<optimized out>, local_signal_index=<optimized out>, argv=0x3a5170e72f0) at kernel/qobject.cpp:3547 #19 0x0000033be77ea642 in QFileSystemWatcher::fileChanged (this=<optimized out>, _t1=...) at .moc/debug-shared/moc_qfilesystemwatcher.cpp:109 #20 0x0000033be7839786 in QObject::event (this=0x10be1554c0, e=<optimized out>) at kernel/qobject.cpp:1195 #21 0x0000033be87e4012 in notify_helper (e=0x10be1df7f0, receiver=0x10be1554c0, this=0x10bdff8a70) at kernel/qapplication.cpp:4550 #22 QApplicationPrivate::notify_helper (this=0x10bdff8a70, receiver=0x10be1554c0, e=0x10be1df7f0) at kernel/qapplication.cpp:4522 #23 0x0000033be87e9b19 in QApplication::notify (this=0x3a5170e7d60, receiver=0x10be1554c0, e=0x10be1df7f0) at kernel/qapplication.cpp:4411 #24 0x0000033be9de961d in KApplication::notify (this=0x3a5170e7d60, receiver=0x10be1554c0, event=0x10be1df7f0) at /usr/src/debug/kde-base/kdelibs-9999/kdelibs-9999/kdeui/kernel/kapplication.cpp:311 #25 0x0000033be781e31c in QCoreApplication::notifyInternal (this=0x3a5170e7d60, receiver=0x10be1554c0, event=0x10be1df7f0) at kernel/qcoreapplication.cpp:876 #26 0x0000033be7821c35 in sendEvent (event=0x10be1df7f0, receiver=0x10be1554c0) at kernel/qcoreapplication.h:231 #27 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x10bdfca560) at kernel/qcoreapplication.cpp:1500 #28 0x0000033be7850193 in sendPostedEvents () at kernel/qcoreapplication.h:236 #29 postEventSourceDispatch (s=0x10bdffc290) at kernel/qeventdispatcher_glib.cpp:279 #30 0x0000033be33f90bd in g_main_dispatch (context=0x10bdffb0e0) at gmain.c:2441 #31 g_main_context_dispatch (context=0x10bdffb0e0) at gmain.c:3011 #32 0x0000033be33f98e8 in g_main_context_iterate (context=0x10bdffb0e0, block=<optimized out>, dispatch=1, self=<optimized out>) at gmain.c:3089 #33 0x0000033be33f9b0d in g_main_context_iteration (context=0x10bdffb0e0, may_block=1) at gmain.c:3152 #34 0x0000033be78505ef in QEventDispatcherGlib::processEvents (this=0x10bdfcba20, flags=...) at kernel/qeventdispatcher_glib.cpp:424 #35 0x0000033be88942ee in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204 #36 0x0000033be781c8c2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149 #37 0x0000033be781cb07 in QEventLoop::exec (this=0x3a5170e7cc0, flags=...) at kernel/qeventloop.cpp:204 #38 0x0000033be7822047 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1148 #39 0x00000010bdd8bf22 in main (argc=1, argv=0x3a5170e8108) at /usr/src/debug/kde-base/knotify-9999/knotify-9999/knotify/main.cpp:73
Created attachment 69344 [details] solid-debug.patch This debug patch comment out the assertion and emit a message instead, it's confirmed that the bug is triggered by auto mount/unmount of devices by the autofs daemon. The message is in the lines which contain "Solid::DeviceManagerPrivate::_k_deviceRemoved" 8< 8< 8< 8< 8< 8< 8< 8< 8< 8< 8< 8< 8< 8< 8< 8< 8< 8< 8< 8< kwin(9912) KWin::x11ErrorHandler: kwin: X Error ( "error: RenderBadPicture [RENDER+1], request: RenderFreePicture[RENDER+7], resource: 0x1200120" ) Object::disconnect: No such slot QObject::dataUpdated(QString,Plasma::DataEngine::Data) in /var/tmp/portage/kde-base/kdelibs-9999/work/kdelibs-9999/plasma/datacontainer.cpp:274 Object::disconnect: (sender name: '/org/kde/fstab///192.168.4.21/SRC') Object::disconnect: No such slot QObject::dataUpdated(QString,Plasma::DataEngine::Data) in /var/tmp/portage/kde-base/kdelibs-9999/work/kdelibs-9999/plasma/datacontainer.cpp:274 Object::disconnect: (sender name: '/org/kde/fstab///192.168.4.21/SRC') [/usr/bin/nepomukservicestub] virtual void Soprano::Server::LocalServer::incomingConnection(quintptr) [/usr/bin/nepomukservicestub] void Soprano::Server::ServerCorePrivate::addConnection(Soprano::Server::ServerConnection*) New connection. New count: 10 [/usr/bin/nepomukservicestub] Soprano::ODBC::Connection::Connection() Soprano::Server::ServerConnection(0x2a3140076d0) file:///usr/share/apps/plasma/plasmoids/notifier/contents/ui/devicenotifier.qml:67: TypeError: Result of expression 'data[last]' [undefined] is not an object. Solid::DeviceManagerPrivate::_k_deviceRemoved Q_ASSERT(dev->backendObject()!=0); "/org/kde/fstab///192.168.4.25/g-gentoo-kde" Solid::DeviceManagerPrivate::_k_deviceRemoved Q_ASSERT(dev->backendObject()!=0); "/org/kde/fstab///192.168.4.25/g-gentoo-kde" Solid::DeviceManagerPrivate::_k_deviceRemoved Q_ASSERT(dev->backendObject()!=0); "/org/kde/fstab///192.168.4.25/g-gentoo-kde" Solid::DeviceManagerPrivate::_k_deviceRemoved Q_ASSERT(dev->backendObject()!=0); "/org/kde/fstab///192.168.4.25/g-gentoo-kde" [/usr/bin/nepomukservicestub] virtual void Soprano::Server::LocalServer::incomingConnection(quintptr) 8< 8< 8< 8< 8< 8< 8< 8< 8< 8< 8< 8< 8< 8< 8< 8< 8< 8< 8< 8<
Hi I could confirm. After upgrade to 4.8.1, each mount/unmount of my auto mounted NFS disk causing crash of knotify It was OK in 4.8.
For me those are of type cifs (samba)
Still not fixed in 4.8.2 ?? The patch works fine for me.
Created attachment 70433 [details] New crash information added by DrKonqi knotify4 (4.0) on KDE Platform 4.8.2 (4.8.2) using Qt 4.8.1 since DrKonqi is workin again I'm going to attach a report from it -- Backtrace (Reduced): #11 0x00007f1ebe166a78 in Solid::DeviceManagerPrivate::_k_deviceRemoved (this=0x8226e0, udi=...) at /usr/src/debug/kde-base/kdelibs-4.8.2/kdelibs-4.8.2/solid/solid/devicemanager.cpp:201 [...] #13 0x00007f1ebe17a2f5 in Solid::Ifaces::DeviceManager::deviceRemoved (this=<optimized out>, _t1=...) at /usr/src/debug/kde-base/kdelibs-4.8.2/kdelibs-4.8.2_build/solid/solid/ifaces/devicemanager.moc:108 #14 0x00007f1ebe1bf6a3 in Solid::Backends::Fstab::FstabManager::_k_updateDeviceList (this=0x783ba0) at /usr/src/debug/kde-base/kdelibs-4.8.2/kdelibs-4.8.2/solid/solid/backends/fstab/fstabmanager.cpp:126 #15 0x00007f1ebe1bf74a in Solid::Backends::Fstab::FstabManager::onMtabChanged (this=0x783ba0) at /usr/src/debug/kde-base/kdelibs-4.8.2/kdelibs-4.8.2/solid/solid/backends/fstab/fstabmanager.cpp:136 [...] #17 0x00007f1ebe1c2628 in Solid::Backends::Fstab::FstabWatcher::onFileChanged (this=0x81cec0, path=...) at /usr/src/debug/kde-base/kdelibs-4.8.2/kdelibs-4.8.2/solid/solid/backends/fstab/fstabwatcher.cpp:104
Still crashing in 4.8.3.
Is this unmaintained? Also had to patch my 4.8.3 just now.
I just upgraded to KDE 4.8.80. It is still crashing :-( Any change for fix?
*** Bug 305621 has been marked as a duplicate of this bug. ***
This was fixed in v4.8.90 sorry for not closing the bug :/ If I'm mistaken please, reopen the bug and provide a backtrace for 4.9.5 or 4.10 ! Thanks and sorry for the delay !