Bug 320353

Application: muon-discover (2.0.0)
KDE Platform Version: 4.10.3
Qt Version: 4.8.4
Operating System: Linux 3.9.0-030900-generic x86_64
Distribution: Ubuntu Saucy Salamander (development branch)

-- Information about the crash:
- What I was doing when the application crashed:
I open the Muon, and when go to searching, Muon closes... I return to open Muon, and go to search another time, and closes other time.

The crash can be reproduced every time.

-- Backtrace:
Application: Muon Discover (muon-discover), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f383b9627c0 (LWP 8122))]

Thread 7 (Thread 0x7f381a7e7700 (LWP 8127)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f38354e1e77 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#2  0x00007f38354e1ea9 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#3  0x00007f38313def8e in start_thread (arg=0x7f381a7e7700) at pthread_create.c:311
#4  0x00007f3838650e1d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 6 (Thread 0x7f38193c7700 (LWP 8128)):
#0  0x00007f3830f059b7 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f3830f07ef3 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f3830f084ab in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f3830f0861c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f3838dca036 in QEventDispatcherGlib::processEvents (this=0x7f38140008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#5  0x00007f3838d9a38f in QEventLoop::processEvents (this=this@entry=0x7f38193c6d90, flags=...) at kernel/qeventloop.cpp:149
#6  0x00007f3838d9a618 in QEventLoop::exec (this=this@entry=0x7f38193c6d90, flags=...) at kernel/qeventloop.cpp:204
#7  0x00007f3838c9c410 in QThread::exec (this=this@entry=0x130ac90) at thread/qthread.cpp:542
#8  0x00007f3838d7bedf in QInotifyFileSystemWatcherEngine::run (this=0x130ac90) at io/qfilesystemwatcher_inotify.cpp:256
#9  0x00007f3838c9ebec in QThreadPrivate::start (arg=0x130ac90) at thread/qthread_unix.cpp:338
#10 0x00007f38313def8e in start_thread (arg=0x7f38193c7700) at pthread_create.c:311
#11 0x00007f3838650e1d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 5 (Thread 0x7f3813c3a700 (LWP 8129)):
#0  0x00007f3830f076a6 in g_main_context_acquire () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f3830f083d5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f3830f0861c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f3838dca036 in QEventDispatcherGlib::processEvents (this=0x7f380c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#4  0x00007f3838d9a38f in QEventLoop::processEvents (this=this@entry=0x7f3813c39dc0, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f3838d9a618 in QEventLoop::exec (this=this@entry=0x7f3813c39dc0, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007f3838c9c410 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:542
#7  0x00007f3838c9ebec in QThreadPrivate::start (arg=0x19bf8f0) at thread/qthread_unix.cpp:338
#8  0x00007f38313def8e in start_thread (arg=0x7f3813c3a700) at pthread_create.c:311
#9  0x00007f3838650e1d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 4 (Thread 0x7f3812782700 (LWP 8130)):
#0  0x00007f3830f4768a in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f3830f47939 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f3830f07f9c in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f3830f084ab in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f3830f0861c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f3838dca036 in QEventDispatcherGlib::processEvents (this=0x7f38040008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#6  0x00007f3838d9a38f in QEventLoop::processEvents (this=this@entry=0x7f3812781dc0, flags=...) at kernel/qeventloop.cpp:149
#7  0x00007f3838d9a618 in QEventLoop::exec (this=this@entry=0x7f3812781dc0, flags=...) at kernel/qeventloop.cpp:204
#8  0x00007f3838c9c410 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:542
#9  0x00007f3838c9ebec in QThreadPrivate::start (arg=0x1268400) at thread/qthread_unix.cpp:338
#10 0x00007f38313def8e in start_thread (arg=0x7f3812782700) at pthread_create.c:311
#11 0x00007f3838650e1d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 3 (Thread 0x7f3810c4e700 (LWP 8132)):
#0  0x00007f38313e106c in __GI___pthread_mutex_lock (mutex=0x7f37f8000a60) at pthread_mutex_lock.c:95
#1  0x00007f3830f47941 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f3830f084fa in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f3830f0861c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f3838dca036 in QEventDispatcherGlib::processEvents (this=0x7f37f80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#5  0x00007f3838d9a38f in QEventLoop::processEvents (this=this@entry=0x7f3810c4dda0, flags=...) at kernel/qeventloop.cpp:149
#6  0x00007f3838d9a618 in QEventLoop::exec (this=this@entry=0x7f3810c4dda0, flags=...) at kernel/qeventloop.cpp:204
#7  0x00007f3838c9c410 in QThread::exec (this=this@entry=0x1c09cb0) at thread/qthread.cpp:542
#8  0x00007f383a9b6aef in QDeclarativePixmapReader::run (this=0x1c09cb0) at util/qdeclarativepixmapcache.cpp:576
#9  0x00007f3838c9ebec in QThreadPrivate::start (arg=0x1c09cb0) at thread/qthread_unix.cpp:338
#10 0x00007f38313def8e in start_thread (arg=0x7f3810c4e700) at pthread_create.c:311
#11 0x00007f3838650e1d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 2 (Thread 0x7f3803c1b700 (LWP 8136)):
#0  0x00007f38386443cd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f3830f08514 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f3830f0861c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f3838dca036 in QEventDispatcherGlib::processEvents (this=0x7f37ec0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#4  0x00007f3838d9a38f in QEventLoop::processEvents (this=this@entry=0x7f3803c1adc0, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f3838d9a618 in QEventLoop::exec (this=this@entry=0x7f3803c1adc0, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007f3838c9c410 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:542
#7  0x00007f3838c9ebec in QThreadPrivate::start (arg=0x7f37f8003930) at thread/qthread_unix.cpp:338
#8  0x00007f38313def8e in start_thread (arg=0x7f3803c1b700) at pthread_create.c:311
#9  0x00007f3838650e1d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 1 (Thread 0x7f383b9627c0 (LWP 8122)):
[KCrash Handler]
#6  FindPkg (Name=..., this=<optimized out>) at /usr/include/apt-pkg/depcache.h:348
#7  QApt::Backend::package (this=this@entry=0x12b4060, name=...) at /build/buildd/qapt-2.0.0/src/backend.cpp:339
#8  0x00007f381b5491fa in QApt::Backend::search (this=0x12b4060, searchString=...) at /build/buildd/qapt-2.0.0/src/backend.cpp:577
#9  0x00007f381bde3654 in ApplicationBackend::searchPackageName (this=<optimized out>, searchText=...) at /build/buildd/muon-2.0.0/libmuon/backends/ApplicationBackend/ApplicationBackend.cpp:519
#10 0x00007f383b5828a1 in ResourcesProxyModel::search (this=0x28a07c0, searchText=...) at /build/buildd/muon-2.0.0/libmuon/resources/ResourcesProxyModel.cpp:50
#11 0x00007f383b5753d7 in ResourcesProxyModel::qt_metacall (this=this@entry=0x28a07c0, _c=_c@entry=QMetaObject::InvokeMetaMethod, _id=4, _a=_a@entry=0x7fff4250c660) at /build/buildd/muon-2.0.0/obj-x86_64-linux-gnu/libmuon/moc_ResourcesProxyModel.cpp:138
#12 0x00007f3818315cd5 in ApplicationProxyModelHelper::qt_metacall (this=0x28a07c0, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0x7fff4250c660) at /build/buildd/muon-2.0.0/obj-x86_64-linux-gnu/libmuon/declarative/moc_ApplicationProxyModelHelper.cpp:105
#13 0x00007f383ab09078 in QDeclarativeObjectMethodScriptClass::callMethod (this=this@entry=0x1303d90, object=object@entry=0x28a07c0, index=50, returnType=<optimized out>, argCount=<optimized out>, argTypes=0x7fff4250c920, ctxt=ctxt@entry=0x7f3819ae72e0) at qml/qdeclarativeobjectscriptclass.cpp:970
#14 0x00007f383ab0ace6 in QDeclarativeObjectMethodScriptClass::callPrecise (this=0x1303d90, object=0x28a07c0, data=..., ctxt=0x7f3819ae72e0) at qml/qdeclarativeobjectscriptclass.cpp:944
#15 0x00007f383ab0b60b in QDeclarativeObjectMethodScriptClass::call (this=<optimized out>, o=<optimized out>, ctxt=<optimized out>) at qml/qdeclarativeobjectscriptclass.cpp:917
#16 0x00007f3835558203 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#17 0x00007f38354543a0 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#18 0x00007f3835431436 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#19 0x00007f3818020441 in ?? ()
#20 0x0000000000000000 in ?? ()

Possible duplicates by query: bug 285143, bug 281623.

Reported using DrKonqi