[Bug 269720] New: Digikam SIGSEGV during face scanning

https://bugs.kde.org/show_bug.cgi?id=269720





--- Comment #20 from Richard Mortimer <richm+kde oldelvet org uk>  2011-05-15 14:50:06 ---
Created an attachment (id=60023)
 --> (http://bugs.kde.org/attachment.cgi?id=60023)
'valgrind --track-origins=yes digikam'   command output

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--- Comment #21 from Marcel Wiesweg <marcel wiesweg gmx de>  2011-05-15 15:36:14 ---
Thanks a lot Richard.

1) There seem to be memory issues in the Recognizer. Given reports like bug
271679 and potentially a student working on the recognition part this summer,
I'm thinking to bypass this component for the final release, for the sake of
stability.

2) CC'ing Raphael about the uninitialized memory in libpgf

3) This appears to be deep inside MySQL libraries

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--- Comment #22 from Marcel Wiesweg <marcel wiesweg gmx de>  2011-05-21 15:31:58 ---
Git commit 40397564b3ebf171ae3dd94ea5ccd6bdbeafb627 by Marcel Wiesweg.
Committed on 21/05/2011 at 15:30.
Pushed by mwiesweg into branch 'master'.

Temporarily disable this code, which does not really work anyway,
for the stable release because of related, unclear crashes,
as discussed in 269720.

CCBUG: 269720

M  +4    -0    utilities/facedetection/facepipeline.cpp    

http://commits.kde.org/digikam/40397564b3ebf171ae3dd94ea5ccd6bdbeafb627

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--- Comment #23 from Marcel Wiesweg <marcel wiesweg gmx de>  2011-06-11 16:46:36 ---
I fixed bug 274660, which has a different backtrace, but is also related to a
directory with invalid images and face scanning. It's not completely impossible
to be the underlying memory corruption here.

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--- Comment #24 from Gilles Caulier <caulier gilles gmail com>  2011-07-02 10:02:12 ---
digiKam 2.0.0 RC is out. Please check if crash is reproducible with this
version.

Thanks in advance

Gilles Caulier

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--- Comment #25 from Torbjörn K. <torbjoern k googlemail com>  2011-07-04 07:14:11 ---
Digikam compiled from master revision 5065db45.

I'm getting pretty much the same backtrace as the opener of this bug.

It does not matter, whether one selects a subset of albums or scann all of
them. At some point it crashes.

Unfortunately, I only have this backtrace, where I also removed some detected
"faces" while the scanning was still in progress.

GDB:

Program received signal SIGSEGV, Segmentation fault.
QVariant::QVariant (this=0x7fffffffc060, p=...) at kernel/qvariant.cpp:1419
1419        : d(p.d)
(gdb) bt
#0  QVariant::QVariant (this=0x7fffffffc060, p=...) at kernel/qvariant.cpp:1419
#1  0x00007ffff447e6b9 in Digikam::ImageModel::data (this=0xe235c0,
index=<value optimized out>, role=<value optimized out>) at
/kde/kdesrc/git/extragear/graphics/digikam/libs/models/imagemodel.cpp:1016
#2  0x00007ffff448f5f5 in Digikam::ImageThumbnailModel::data (this=0xe235c0,
index=<value optimized out>, role=<value optimized out>) at
/kde/kdesrc/git/extragear/graphics/digikam/libs/models/imagethumbnailmodel.cpp:279
#3  0x00007ffff448230d in data (this=<value optimized out>, left=...,
right=...) at /usr/include/QtCore/qabstractitemmodel.h:398
#4  Digikam::ImageFilterModel::subSortLessThan (this=<value optimized out>,
left=..., right=...) at
/kde/kdesrc/git/extragear/graphics/digikam/libs/models/imagefiltermodel.cpp:1054
#5  0x00007ffff0539d4c in operator() (begin=0x3ab4bf0, pivot=<value optimized
out>, end=<value optimized out>, t=<value optimized out>, lessThan=...) at
itemviews/qsortfilterproxymodel.cpp:80
#6  QAlgorithmsPrivate::qMerge<int*, int const, QSortFilterProxyModelLessThan>
(begin=0x3ab4bf0, pivot=<value optimized out>, end=<value optimized out>,
t=<value optimized out>, lessThan=...) at
../../src/corelib/tools/qalgorithms.h:424
#7  0x00007ffff0539ec2 in QAlgorithmsPrivate::qStableSortHelper<int*, int,
QSortFilterProxyModelLessThan> (begin=0x3ab4bf0, end=0x3ab4bf8, t=@0x3ab4bf0,
lessThan=...) at ../../src/corelib/tools/qalgorithms.h:459
#8  0x00007ffff0532bb1 in qStableSort<int*, QSortFilterProxyModelLessThan>
(this=<value optimized out>, source_rows=..., source_parent=<value optimized
out>) at ../../src/corelib/tools/qalgorithms.h:212
#9  QSortFilterProxyModelPrivate::sort_source_rows (this=<value optimized out>,
source_rows=..., source_parent=<value optimized out>) at
itemviews/qsortfilterproxymodel.cpp:464
#10 0x00007ffff0535360 in QSortFilterProxyModelPrivate::source_items_inserted
(this=0xd1c4a0, source_parent=..., start=<value optimized out>, end=<value
optimized out>, orient=Qt::Vertical) at itemviews/qsortfilterproxymodel.cpp:803
#11 0x00007ffff053569f in QSortFilterProxyModelPrivate::_q_sourceRowsInserted
(this=0xd1c4a0, source_parent=<value optimized out>, start=<value optimized
out>, end=<value optimized out>) at itemviews/qsortfilterproxymodel.cpp:1278
#12 0x00007ffff053754c in QSortFilterProxyModel::qt_metacall (this=0xe233a0,
_c=QMetaObject::InvokeMetaMethod, _id=12, _a=0x7fffffffc660) at
.moc/release-shared/moc_qsortfilterproxymodel.cpp:135
#13 0x00007ffff4488976 in Digikam::ImageFilterModel::qt_metacall
(this=0xe233a0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>,
_a=0x7fffffffc660)
    at
/kde/kdebuild/kde/extragear/graphics/digikam/digikam/imagefiltermodel.moc:179
#14 0x0000000000551910 in Digikam::ImageAlbumFilterModel::qt_metacall
(this=0xe233a0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>,
_a=0x7fffffffc660)
    at
/kde/kdebuild/kde/extragear/graphics/digikam/digikam/imagealbumfiltermodel.moc:74
#15 0x00007ffff1085a5f in QMetaObject::activate (sender=0xe235c0, m=<value
optimized out>, local_signal_index=<value optimized out>, argv=0x7fffffffc660)
at kernel/qobject.cpp:3278
#16 0x00007ffff10cda94 in QAbstractItemModel::rowsInserted (this=<value
optimized out>, _t1=<value optimized out>, _t2=474, _t3=475) at
.moc/release-shared/moc_qabstractitemmodel.cpp:181
#17 0x00007ffff106bbcc in QAbstractItemModel::endInsertRows (this=0xe235c0) at
kernel/qabstractitemmodel.cpp:2412
#18 0x00007ffff447dd40 in Digikam::ImageModel::publiciseInfos (this=0xe235c0,
infos=..., extraValues=<value optimized out>) at
/kde/kdesrc/git/extragear/graphics/digikam/libs/models/imagemodel.cpp:663
#19 0x00007ffff447dff6 in Digikam::ImageModel::qt_metacall (this=0xe235c0,
_c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fffffffc8f0)
at /kde/kdebuild/kde/extragear/graphics/digikam/digikam/imagemodel.moc:113
#20 0x00007ffff4490470 in Digikam::ImageThumbnailModel::qt_metacall
(this=0xe235c0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>,
_a=0x7fffffffc8f0)
    at
/kde/kdebuild/kde/extragear/graphics/digikam/digikam/imagethumbnailmodel.moc:86
#21 0x0000000000550fc0 in Digikam::ImageAlbumModel::qt_metacall (this=0xe235c0,
_c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fffffffc8f0)
    at
/kde/kdebuild/kde/extragear/graphics/digikam/digikam/imagealbummodel.moc:104
#22 0x00007ffff1085a5f in QMetaObject::activate (sender=0xe625a0, m=<value
optimized out>, local_signal_index=<value optimized out>, argv=0x7fffffffc8f0)
at kernel/qobject.cpp:3278
#23 0x00007ffff448272a in
Digikam::ImageFilterModel::ImageFilterModelPrivate::reAddImageInfos
(this=<value optimized out>, _t1=<value optimized out>, _t2=<value optimized
out>)
    at
/kde/kdebuild/kde/extragear/graphics/digikam/digikam/imagefiltermodelpriv.moc:123
#24 0x00007ffff448638f in
Digikam::ImageFilterModel::ImageFilterModelPrivate::packageFinished
(this=0xe625a0, package=...) at
/kde/kdesrc/git/extragear/graphics/digikam/libs/models/imagefiltermodel.cpp:401
#25 0x00007ffff44864c0 in
Digikam::ImageFilterModel::ImageFilterModelPrivate::qt_metacall (this=0xe625a0,
_c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x3f06390)
    at
/kde/kdebuild/kde/extragear/graphics/digikam/digikam/imagefiltermodelpriv.moc:96
#26 0x00007ffff108537a in QObject::event (this=0xe625a0, e=<value optimized
out>) at kernel/qobject.cpp:1217
#27 0x00007fffeffa4144 in QApplicationPrivate::notify_helper (this=0xb4c6e0,
receiver=0xe625a0, e=0x3a14700) at kernel/qapplication.cpp:4462
#28 0x00007fffeffac6fa in QApplication::notify (this=<value optimized out>,
receiver=0xe625a0, e=0x3a14700) at kernel/qapplication.cpp:4341
#29 0x00007ffff1ab7656 in KApplication::notify (this=0x7fffffffd510,
receiver=0xe625a0, event=0x3a14700) at
/usr/src/debug/kdelibs-4.6.90/kdeui/kernel/kapplication.cpp:311
#30 0x00007ffff107147c in QCoreApplication::notifyInternal
(this=0x7fffffffd510, receiver=0xe625a0, event=0x3a14700) at
kernel/qcoreapplication.cpp:731
#31 0x00007ffff1074c75 in sendEvent (receiver=0x0, event_type=0, data=0xaf0fe0)
at kernel/qcoreapplication.h:215
#32 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0,
data=0xaf0fe0) at kernel/qcoreapplication.cpp:1372
#33 0x00007ffff109c093 in sendPostedEvents (s=0xb4edd0) at
kernel/qcoreapplication.h:220
#34 postEventSourceDispatch (s=0xb4edd0) at
kernel/qeventdispatcher_glib.cpp:277
#35 0x00007fffe9270bd3 in g_main_dispatch (context=0xb4ece0) at gmain.c:2440
#36 g_main_context_dispatch (context=0xb4ece0) at gmain.c:3013
#37 0x00007fffe92713b0 in g_main_context_iterate (context=0xb4ece0, block=1,
dispatch=1, self=<value optimized out>) at gmain.c:3091
#38 0x00007fffe9271650 in g_main_context_iteration (context=0xb4ece0,
may_block=1) at gmain.c:3154
#39 0x00007ffff109c22f in QEventDispatcherGlib::processEvents (this=0xb173a0,
flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:422
#40 0x00007ffff0049bae in QGuiEventDispatcherGlib::processEvents (this=<value
optimized out>, flags=<value optimized out>) at
kernel/qguieventdispatcher_glib.cpp:204
#41 0x00007ffff10708d2 in QEventLoop::processEvents (this=<value optimized
out>, flags=...) at kernel/qeventloop.cpp:149
#42 0x00007ffff1070ae5 in QEventLoop::exec (this=0x7fffffffd340, flags=...) at
kernel/qeventloop.cpp:201
#43 0x00007ffff1074f2b in QCoreApplication::exec () at
kernel/qcoreapplication.cpp:1008
#44 0x00000000006847e5 in main (argc=11806976, argv=0x7fff00000000) at
/kde/kdesrc/git/extragear/graphics/digikam/digikam/main/main.cpp:232
(gdb) continue
Continuing.
digikam(23377)/digikam (core)
Digikam::DatabaseCoreBackendPrivate::debugOutputFailedQuery: Failure executing
query:
 "SELECT modificationDate, fileSize, uniqueHash FROM Images WHERE id=?;"
Error messages: "Zeile kann nicht abgeholt werden" "disk I/O error" 10 1
QSqlError(-1, "", "")
Bound values:  (QVariant(qlonglong, 1298) )
digikam(23377)/digikam (core)
Digikam::DatabaseCoreBackendPrivate::debugOutputFailedQuery: Failure executing
query:
 "SELECT orientation FROM ImageInformation WHERE imageid=?;"
Error messages: "Zeile kann nicht abgeholt werden" "disk I/O error" 10 1
QSqlError(-1, "", "")
Bound values:  (QVariant(qlonglong, 1298) )
digikam(23377)/digikam (core)
Digikam::DatabaseCoreBackendPrivate::debugOutputFailedQuery: Failure executing
query:
 "SELECT id, type, modificationDate, orientationHint, data FROM FilePaths  
INNER JOIN Thumbnails ON thumbId = id WHERE path=?;"
Error messages: "Zeile kann nicht abgeholt werden" "disk I/O error" 10 1
QSqlError(-1, "", "")
Bound values:  (QVariant(QString,
"/media/Elements/Fotos/2004/USA-Party/03-023-0846.jpg") )
digikam(23377)/KEXIV2 KExiv2Iface::KExiv2::sidecarFilePathForFile: File path:
"/media/Elements/Fotos/2004/USA-Party/03-023-0846.jpg"  =>  XMP sidecar path:
"/media/Elements/Fotos/2004/USA-Party/03-023-0846.jpg.xmp"
KCrash: Application 'digikam' crashing...
KCrash: Attempting to start /usr/lib64/kde4/libexec/drkonqi from kdeinit
sock_file=/home/myself/.kde4/socket-suseTower/kdeinit4__0
QSocketNotifier: Invalid socket 21 and type 'Read', disabling...
[Thread 0x7fffc3620700 (LWP 23420) exited]
digikam(23377)/digikam (core) Digikam::DImg::load:
"/media/Elements/Fotos/2004/USA-Party/03-023-0846.jpg"  : JPEG file identified
[Thread 0x7fffb96e6700 (LWP 23461) exited]
[Thread 0x7fffbcf00700 (LWP 23460) exited]
[Thread 0x7fffb66e2700 (LWP 23459) exited]
[Thread 0x7fffb5c41700 (LWP 23449) exited]
[Thread 0x7fffbc058700 (LWP 23443) exited]
[Thread 0x7fffb4549700 (LWP 23427) exited]
[Thread 0x7fffbb6e9700 (LWP 23426) exited]
[Thread 0x7fffbdf02700 (LWP 23423) exited]
[Thread 0x7fffbf43e700 (LWP 23422) exited]
[Thread 0x7fffc87fe700 (LWP 23421) exited]
[Thread 0x7fffc1dc7700 (LWP 23419) exited]
[Thread 0x7fffc25c8700 (LWP 23418) exited]
[Thread 0x7fffcdf40700 (LWP 23417) exited]
[Thread 0x7fffd7e6d700 (LWP 23383) exited]
[Thread 0x7fffd866e700 (LWP 23381) exited]
[Thread 0x7fffd8e6f700 (LWP 23380) exited]
[Thread 0x7fffbd701700 (LWP 23424) exited]

Program terminated with signal SIGALRM, Alarm clock.
The program no longer exists.
(gdb)

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--- Comment #26 from Richard Mortimer <richm+kde oldelvet org uk>  2011-07-05 07:39:58 ---
I tested face tagging last night and it is definitely much harder to crash now.
I did manage to crash it (see bug 277099). That has been closed as a duplicate
of bug 262596 but I wonder if this is the same issue too. The initial
stacktrace is very similar to that one. Certainly the crash reported yesterday
in comment 25 looks to be the same.

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--- Comment #27 from Marcel Wiesweg <marcel wiesweg gmx de>  2011-08-21 14:34:06 ---
*** Bug 280521 has been marked as a duplicate of this bug. ***

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--- Comment #28 from Gilles Caulier <caulier gilles gmail com>  2011-11-03 12:42:08 ---
digiKam 2.2.0 is out since few weeks. Crash still valid with this version ?

Gilles Caulier

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--- Comment #29 from Thomas Eschenbacher <Thomas Eschenbacher gmx de>  2011-11-04 19:39:40 ---
Hello Gilles,

I don't think that anyone could answer you that question with "yes". If I see
it right, the author has commented out the corresponding code completely "for
release" [see facepipeline.cpp, RecognitionWorker::process(...)].

That also would explain why "face recognition" does not recognize anything in
released versions :-(

I fetched the latest source from git, re-enabled that code and tried it. At
least for me, it did not crash, but it also does not recognize anything. I
added a lot of debug printf in the code to see what's going on. The "filter"
stage seems to do something, the "recognition" seems to do something, but that
"database" file is not created!? Is it possible that this stuff is disabled as
well, somewhere - and that the recognition simply does not work because it does
not have any "database" behind against which it could compare?

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--- Comment #30 from Gilles Caulier <caulier gilles gmail com>  2011-11-04 19:53:24 ---
Thomas,

It's simple :

in libkface, face detection is implemented and face recognition is not yet. In
fact face recognition is under development. There is a student working on
through SoK project.

Gilles Caulier

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--- Comment #31 from Thomas Eschenbacher <Thomas Eschenbacher gmx de>  2011-11-04 20:23:33 ---
So if that is really the case, please allow the question why this option is
available in the GUI and announced on the homepage in big letters - whereas on
the other side it is not implemented?

I digged a bit deeper, and I can only see that there is a notable amount of
code that seems to have a chance to work, but Database::recognizeFaces(...)
[libkface/database.cpp] always bails out right at the start because the
database is empty. But I cannot see where this database should get initially
filled!? By manually tagging some pictures, I attached "tags" to some files,
but not (knowingly) put any entries into some database. Where is the link
between these two things? I think there is some more stuff to do...

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--- Comment #32 from Marcel Wiesweg <marcel wiesweg gmx de>  2011-11-05 12:42:34 ---
Please consider the distinction between face detection and face recognition (as
used as technical terms in this context).
Eigenfaces was implemented in 2010's GSoC, but a) the implementation never
worked and b) even a working implementation of this technology would probably
not yield good results with real-life pictures

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--- Comment #33 from Gilles Caulier <caulier gilles gmail com>  2011-11-05 13:23:33 ---
Marcel,

What's the status of new implementation done by current SoK student ?

Gilles

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--- Comment #34 from Marcel Wiesweg <marcel wiesweg gmx de>  2011-11-05 14:39:28 ---
I did not hear from him for a long time. One of the things a planned for the
coding sprint...

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--- Comment #35 from Gilles Caulier <caulier gilles gmail com>  2011-12-14 13:41:19 ---
Kristian,

Can you reproduce the crash using digiKam 2.4 ?

Gilles Caulier

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[Kristian Karl]

https://bugs.kde.org/show_bug.cgi?id=269720





--- Comment #36 from Kristian Karl <kristian hermann karl gmail com>  2011-12-14 14:02:59 ---
No I can not. I don't have problems with this in 2.4 or greater.

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--- Comment #37 from Frederic Grelot <fredericg_99 yahoo fr>  2011-12-20 19:19:32 ---
Created an attachment (id=66948)
 --> (http://bugs.kde.org/attachment.cgi?id=66948)
New crash information added by DrKonqi

digikam (2.4.0) on KDE Platform 4.7.3 (4.7.3) using Qt 4.8.0

- What I was doing when the application crashed:
In the "Unkwown people" tag, I selected several faces using Ctrl (the selection
was not contiguous).
The "face name" field was already set (I tagged one face with this name just
previously)
I hit the "confirm" button (not using "Return"), and boom!

Unfortunately for you, I was actually using digikam 2.4.0, built from git
version :
digikam-core : 3b25c8453f15f4e23a1e3fa348c502101658a44e
digikam parent repo : e4b416163f8cceb08f42d16b37d1074e79b2dc68

-- Backtrace (Reduced):
#6  0x0000003aa959a5e6 in QVariant::QVariant(QVariant const&) () from
/usr/lib64/libQtCore.so.4
#7  0x00007f1e618fafe2 in Digikam::ImageModel::data (this=0x20fec30,
index=<optimized out>, role=<optimized out>) at
/home/goulou/digikam/digikam-sc/core/libs/models/imagemodel.cpp:1101
#8  0x00007f1e6190df0e in Digikam::ImageThumbnailModel::data (this=0x20fec30,
index=<optimized out>, role=<optimized out>) at
/home/goulou/digikam/digikam-sc/core/libs/models/imagethumbnailmodel.cpp:261
#9  0x0000003aac569bfc in QSortFilterProxyModel::data(QModelIndex const&, int)
const () from /usr/lib64/libQtGui.so.4
#10 0x00007f1e61900b1a in Digikam::ImageFilterModel::data (this=0x2101b60,
index=<optimized out>, role=<optimized out>) at
/home/goulou/digikam/digikam-sc/core/libs/models/imagefiltermodel.cpp:554

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--- Comment #38 from Frederic Grelot <fredericg_99 yahoo fr>  2011-12-20 20:47:13 ---
Additionnal information : the faces have actually been tagged correctly (and
the crash occured afterward)
I could not reproduce it easily

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[Gilles Caulier-4]

https://bugs.kde.org/show_bug.cgi?id=269720

--- Comment #39 from Gilles Caulier <[hidden email]> ---
Official digiKam 2.6.0 release is out since few days now :

http://www.digikam.org/drupal/node/656

Please, check if this entry still valid, or update report accordingly.

Thanks in advance.

Gilles Caulier

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