[Akonadi] [Bug 323586] nepomuk_tag_resource crashes when switching from offline to online mode

[Dirk Sarpe]

https://bugs.kde.org/show_bug.cgi?id=323586

--- Comment #6 from Dirk Sarpe <dns_hmpf at web.de> ---
Thanks! The complete gdb session comes as attachment (there is a gdb error when
importing libstdcxx.v6.printers, probably an ubuntu bug), the backtrace is here
as well:

(gdb) continue
Continuing.
Catchpoint 1 (exception thrown), __cxxabiv1::__cxa_throw (obj=0x2138b00,
tinfo=0x7f2168b73670 <typeinfo for Akonadi::Exception>, dest=
    0x7f2168832e70 <Akonadi::Exception::~Exception()>) at
../../../../src/libstdc++-v3/libsupc++/eh_throw.cc:70
70      ../../../../src/libstdc++-v3/libsupc++/eh_throw.cc: Datei oder
Verzeichnis nicht gefunden.
(gdb) t a a bt

Thread 2 (Thread 0x7f215761b700 (LWP 22947)):
#0  0x00007f2167479233 in select () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f21683a5132 in QProcessManager::run (this=0x7f2168724540
<processManager()::processManager>) at io/qprocess_unix.cpp:245
#2  0x00007f21682c9bec in QThreadPrivate::start (arg=0x7f2168724540
<processManager()::processManager>) at thread/qthread_unix.cpp:338
#3  0x00007f216656ef8e in start_thread (arg=0x7f215761b700) at
pthread_create.c:311
#4  0x00007f2167480e1d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 1 (Thread 0x7f216984b7c0 (LWP 22856)):
#0  __cxxabiv1::__cxa_throw (obj=0x2138b00, tinfo=0x7f2168b73670 <typeinfo for
Akonadi::Exception>, dest=0x7f2168832e70 <Akonadi::Exception::~Exception()>)
    at ../../../../src/libstdc++-v3/libsupc++/eh_throw.cc:70
#1  0x00007f216884a4bd in
Akonadi::ProtocolHelper::entitySetToByteArray<Akonadi::Item> (_objects=...,
command=...) at ../../akonadi/protocolhelper_p.h:152
#2  0x00007f216885d78d in sendCommand (asapCommand=0x7f216890cfdc "LINK",
this=0x40f84c0) at ../../akonadi/linkjobimpl_p.h:64
#3  Akonadi::LinkJob::doStart (this=<optimized out>) at
../../akonadi/linkjob.cpp:49
#4  0x00007f216885c317 in Akonadi::JobPrivate::startQueued (this=<optimized
out>) at ../../akonadi/job.cpp:165
#5  0x00007f2168894589 in Akonadi::SessionPrivate::startJob
(this=this at entry=0x1aac540, job=job at entry=0x40f8490) at
../../akonadi/session.cpp:281
#6  0x00007f216889510f in Akonadi::SessionPrivate::doStartNext (this=0x1aac540)
at ../../akonadi/session.cpp:270
#7  0x00007f21683e05be in QObject::event (this=0x1ac4830, e=<optimized out>) at
kernel/qobject.cpp:1194
#8  0x00007f2164e1e8ec in QApplicationPrivate::notify_helper
(this=this at entry=0x17bad70, receiver=receiver at entry=0x1ac4830,
e=e at entry=0x1b695b0)
    at kernel/qapplication.cpp:4567
#9  0x00007f2164e2125b in QApplication::notify (this=this at entry=0x7fffe5528110,
receiver=receiver at entry=0x1ac4830, e=e at entry=0x1b695b0) at
kernel/qapplication.cpp:4428
#10 0x00007f2168da5916 in KApplication::notify (this=0x7fffe5528110,
receiver=0x1ac4830, event=0x1b695b0) at ../../kdeui/kernel/kapplication.cpp:311
#11 0x00007f21683c663e in QCoreApplication::notifyInternal
(this=0x7fffe5528110, receiver=receiver at entry=0x1ac4830,
event=event at entry=0x1b695b0)
    at kernel/qcoreapplication.cpp:946
#12 0x00007f21683ca171 in sendEvent (event=0x1b695b0, receiver=0x1ac4830) at
../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#13 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver at entry=0x0,
event_type=event_type at entry=0, data=0x1783e60) at
kernel/qcoreapplication.cpp:1570
#14 0x00007f21683ca4a3 in QCoreApplication::sendPostedEvents
(receiver=receiver at entry=0x0, event_type=event_type at entry=0) at
kernel/qcoreapplication.cpp:1463
#15 0x00007f21683f4e83 in sendPostedEvents () at
../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#16 postEventSourceDispatch (s=s at entry=0x17bab90) at
kernel/qeventdispatcher_glib.cpp:279
#17 0x00007f2162e09f05 in g_main_dispatch (context=0x17bb0f0) at
/build/buildd/glib2.0-2.36.0/./glib/gmain.c:3054
#18 g_main_context_dispatch (context=context at entry=0x17bb0f0) at
/build/buildd/glib2.0-2.36.0/./glib/gmain.c:3630
#19 0x00007f2162e0a248 in g_main_context_iterate
(context=context at entry=0x17bb0f0, block=block at entry=1,
dispatch=dispatch at entry=1, self=<optimized out>)
    at /build/buildd/glib2.0-2.36.0/./glib/gmain.c:3701
#20 0x00007f2162e0a304 in g_main_context_iteration (context=0x17bb0f0,
may_block=1) at /build/buildd/glib2.0-2.36.0/./glib/gmain.c:3762
#21 0x00007f21683f5016 in QEventDispatcherGlib::processEvents (this=0x1785740,
flags=...) at kernel/qeventdispatcher_glib.cpp:424
#22 0x00007f2164ec413e in QGuiEventDispatcherGlib::processEvents
(this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#23 0x00007f21683c538f in QEventLoop::processEvents
(this=this at entry=0x7fffe5528090, flags=...) at kernel/qeventloop.cpp:149
#24 0x00007f21683c5618 in QEventLoop::exec (this=this at entry=0x7fffe5528090,
flags=...) at kernel/qeventloop.cpp:204
#25 0x00007f21683cacf6 in QCoreApplication::exec () at
kernel/qcoreapplication.cpp:1218
#26 0x00007f2164e1cffc in QApplication::exec () at kernel/qapplication.cpp:3828
#27 0x00007f2168877163 in Akonadi::ResourceBase::init (r=r at entry=0x1ac5860) at
../../akonadi/resourcebase.cpp:548
#28 0x000000000040d3b3 in Akonadi::ResourceBase::init<NepomukTagResource>
(argc=<optimized out>, argv=<optimized out>) at
/usr/include/akonadi/resourcebase.h:192
#29 0x00007f21673a8ea5 in __libc_start_main (main=0x405300 <main(int, char**)>,
argc=3, ubp_av=0x7fffe5528228, init=<optimized out>, fini=<optimized out>, 
    rtld_fini=<optimized out>, stack_end=0x7fffe5528218) at libc-start.c:260
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