[digikam] [Bug 338176] New: Digikam-4.2.0 sometimes crashes when recognising faces

[Christian-3]

https://bugs.kde.org/show_bug.cgi?id=338176

--- Comment #37 from Christian <[hidden email]> ---
I tried to run the "erase face recognition database and re-learn from the
existing tags" command, but this also runs into an out-of-memory error after
using up all the available memory and swap. (Takes over an hour because it gets
so slow with all the swapping...)

However, that command, the way I understand it, should not modify the tags from
the SQL database. So maybe the crash on the "erase and relearn" command is an
unrelated bug. Unfortunately I have no debug output because of the memory/swap
issue.

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[Christian-3]

https://bugs.kde.org/show_bug.cgi?id=338176

--- Comment #38 from Christian <[hidden email]> ---
Another piece of this puzzle. In 4.6.0, the face tagging appears to work
without any memory leaks or bugs when I tag the faces in the Album view. But
when I tag them in the "Unidentified faces" view, then the memory leak occurs
and eventually (after exhausting all the swap and memory) digikam crashes.
Maybe this has to do with some kind of race condition related to saving the
changed face tag into the picture file and the picture being or not being any
longer part of the "Unidentified faces" view?

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[Gilles Caulier-4]

https://bugs.kde.org/show_bug.cgi?id=338176

Gilles Caulier <[hidden email]> changed:

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--- Comment #39 from Gilles Caulier <[hidden email]> ---
*** Bug 343314 has been marked as a duplicate of this bug. ***

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[Sreeram Boyapati]

https://bugs.kde.org/show_bug.cgi?id=338176

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--- Comment #40 from Sreeram Boyapati <[hidden email]> ---
@Christian, What do you mean by unidentified faces view?  

Is it People/Unknown in tags section. Where faces are detected but they are not
recognized hence they are not given a tag?

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[Gilles Caulier-4]

https://bugs.kde.org/show_bug.cgi?id=338176

--- Comment #41 from Gilles Caulier <[hidden email]> ---
*** Bug 344661 has been marked as a duplicate of this bug. ***

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[Gilles Caulier-4]

https://bugs.kde.org/show_bug.cgi?id=338176

--- Comment #42 from Gilles Caulier <[hidden email]> ---
Proble also reported into bug#344661, with a valgrind trace of memory leak.

Gilles Caulier

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[wwdiver]

https://bugs.kde.org/show_bug.cgi?id=338176

--- Comment #43 from [hidden email] ---
added a valgrind trace of memory leak.

Currently updated to digiKam version: 4:4.8.0-trusty~ppa1  (Philip Johnsson
<[hidden email]> PPA package) but same behaviour like described in
bug#344661.

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[wwdiver]

https://bugs.kde.org/show_bug.cgi?id=338176

--- Comment #44 from [hidden email] ---
Created attachment 91447
  --> https://bugs.kde.org/attachment.cgi?id=91447&action=edit
digikam valgrind memory leak trace

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[Johannes Kapune]

https://bugs.kde.org/show_bug.cgi?id=338176

Johannes <[hidden email]> changed:

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--- Comment #45 from Johannes <[hidden email]> ---
to comment #38:

here it crashes in all cases. If I try to give a face a name then eventually
the memory leak occurs and (after exhausting all the swap and memory) digikam
crashes.

it happends every time

here it is used:

opensude 13.1
KDE 4.11.5
digiKam 4.7.0 (last version I can get on (openSUSE BuildService - KDE:Extra)

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[Johannes Kapune]

https://bugs.kde.org/show_bug.cgi?id=338176

--- Comment #46 from Johannes <[hidden email]> ---
I got some updates and also to DigiKam 4.8.0 but still same crash:

give a name to face results in eating all memory and crash
it happends in file view and it happends in unknown people view

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[Johannes Kapune]

https://bugs.kde.org/show_bug.cgi?id=338176

--- Comment #47 from Johannes <[hidden email]> ---
I tried to give some more informations, but it seems very difficuilt.

When starting DigiKam under gdm I get request to install some debug-info
packages. I treid but most often I get message:
"zypper install -C
"debuginfo(build-id)=05418c8b523e59cd43336b1f984b7410a49ecf4c"
Daten des Repositories laden ...
Installierte Pakete lesen ...
Keine Anbieter von 'debuginfo(build-id) =
05418c8b523e59cd43336b1f984b7410a49ecf4c' gefunden.
Paketabhängigkeiten auflösen ...

Keine auszuführenden Aktionen."

so there are no packages to install.

This list of needed packages is very, very long!

Is there a simple way to install all needed packages in one shot?

Johannes

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[Johannes Kapune]

https://bugs.kde.org/show_bug.cgi?id=338176

--- Comment #48 from Johannes <[hidden email]> ---
Created attachment 91618
  --> https://bugs.kde.org/attachment.cgi?id=91618&action=edit
start of digikam 4.8.0 on opensuse 13.1

I hope this backtrace helps a little bit.

But with this I do not come to the crash, It only starts digikam but it is not
usable.

in normal use (and also unde use of gdb) I do not get the crash screen of KDE,
so what can I do to give more helpful informations?

Johannes

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[Maik Qualmann]

https://bugs.kde.org/show_bug.cgi?id=338176

Maik Qualmann <[hidden email]> changed:

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--- Comment #49 from Maik Qualmann <[hidden email]> ---
Created attachment 91657
  --> https://bugs.kde.org/attachment.cgi?id=91657&action=edit
libkface.patch

I put this patch ready for testing, he fixes a part of the problem. The memory
leaks I can not reproduce, but the fast-growing "recognition.db" database.
After starting digikam and a first assignment of unknown face, the entries in
the table "OpenCV LBP Histograms" be doubled. So very quickly arise thousands
of entries and digikam becomes very slow after the first assignment of an
unknown face.

Maik

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[Gilles Caulier-4]

https://bugs.kde.org/show_bug.cgi?id=338176

--- Comment #50 from Gilles Caulier <[hidden email]> ---
Git commit 916b00af31981a0729e05a92ae212f05279e730f by Gilles Caulier.
Committed on 21/03/2015 at 13:57.
Pushed by cgilles into branch 'master'.

apply patch #91657 to fix libkface histogram DB table grawing at each
registration of data.

M  +3    -0    libkface/recognition-opencv-lbph/lbphfacemodel.cpp

http://commits.kde.org/libkface/916b00af31981a0729e05a92ae212f05279e730f

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[Gilles Caulier-4]

https://bugs.kde.org/show_bug.cgi?id=338176

--- Comment #51 from Gilles Caulier <[hidden email]> ---
Git commit c2c45b7a025d65f9318037b27c0bf348d48db825 by Gilles Caulier.
Committed on 21/03/2015 at 14:02.
Pushed by cgilles into branch 'Applications/14.12'.

backport commit #916b00af31981a0729e05a92ae212f05279e730f from git/master to
14.12 branch

M  +3    -0    libkface/recognition-opencv-lbph/lbphfacemodel.cpp

http://commits.kde.org/libkface/c2c45b7a025d65f9318037b27c0bf348d48db825

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[Gilles Caulier-4]

https://bugs.kde.org/show_bug.cgi?id=338176

--- Comment #52 from Gilles Caulier <[hidden email]> ---
Git commit 0626017fb632e73549a86a6ba3a78d9569aa8768 by Gilles Caulier.
Committed on 21/03/2015 at 14:06.
Pushed by cgilles into branch 'Applications/15.04'.

backport commit #916b00af31981a0729e05a92ae212f05279e730f from git/master to
15.04 branch

M  +3    -0    libkface/recognition-opencv-lbph/lbphfacemodel.cpp

http://commits.kde.org/libkface/0626017fb632e73549a86a6ba3a78d9569aa8768

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[Gilles Caulier-4]

https://bugs.kde.org/show_bug.cgi?id=338176

--- Comment #53 from Gilles Caulier <[hidden email]> ---
Git commit 9239937e66ad091bef391781d1a17abb74961444 by Gilles Caulier.
Committed on 21/03/2015 at 14:32.
Pushed by cgilles into branch 'frameworks'.

backport commit #916b00af31981a0729e05a92ae212f05279e730f from git/master to
frameworks branch

M  +3    -0    src/recognition-opencv-lbph/lbphfacemodel.cpp

http://commits.kde.org/libkface/9239937e66ad091bef391781d1a17abb74961444

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[Gilles Caulier-4]

https://bugs.kde.org/show_bug.cgi?id=338176

--- Comment #54 from Gilles Caulier <[hidden email]> ---
To all users in this room :

I patched libkface with Maik patch everywhere in KDE git repositories.

I would to have a feedback about this patch to see if it's improve stability of
face recognition.

Thanks in advance

Gilles Caulier

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[Gilles Caulier-4]

https://bugs.kde.org/show_bug.cgi?id=338176

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--- Comment #55 from Gilles Caulier <[hidden email]> ---
*** Bug 345395 has been marked as a duplicate of this bug. ***

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[Stephan Olbrich]

https://bugs.kde.org/show_bug.cgi?id=338176

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--- Comment #56 from Stephan Olbrich <[hidden email]> ---
I'm having the same problem or at least the memory-leak.
As soon as I use some face recognition feature, digikam fills the memory until
what seems to be the limit for my 32bit system. I get no crash though.
I use the packages from ppa.launchpad.net/philip5/extra/ubuntu/

I managed to get a valgrind output. This is the last part, I'll attach the
whole thing.
Unfortunatelly there are no debug-packages of libkface.

==12227== 1,110,977,532 bytes in 16,947 blocks are possibly lost in loss record
109,774 of 109,774
==12227==    at 0x402A17C: malloc (in
/usr/lib/valgrind/vgpreload_memcheck-x86-linux.so)
==12227==    by 0x402C328: realloc (in
/usr/lib/valgrind/vgpreload_memcheck-x86-linux.so)
==12227==    by 0x7158E5B: qRealloc(void*, unsigned int) (in
/usr/lib/i386-linux-gnu/libQtCore.so.4.8.6)
==12227==    by 0x7162104: qUncompress(unsigned char const*, int) (in
/usr/lib/i386-linux-gnu/libQtCore.so.4.8.6)
==12227==    by 0x591AE65: ??? (in /usr/lib/libkface.so.3.0.0)
==12227==    by 0x58EB14E: ??? (in /usr/lib/libkface.so.3.0.0)
==12227==    by 0x58DBB9C:
KFaceIface::RecognitionDatabase::Private::train(KFaceIface::OpenCVLBPHFaceRecognizer*,
QList<KFaceIface::Identity> const&, KFaceIface::TrainingDataProvider*, QString
const&) (in /usr/lib/libkface.so.3.0.0)
==12227==    by 0x58DC33C:
KFaceIface::RecognitionDatabase::train(QList<KFaceIface::Identity> const&,
KFaceIface::TrainingDataProvider*, QString const&) (in
/usr/lib/libkface.so.3.0.0)
==12227==    by 0x834EFE3:
Digikam::Trainer::process(QExplicitlySharedDataPointer<Digikam::FacePipelineExtendedPackage>)
(in /usr/bin/digikam)
==12227==    by 0x834F479: Digikam::Trainer::qt_static_metacall(QObject*,
QMetaObject::Call, int, void**) (in /usr/bin/digikam)
==12227==    by 0x7282769: QMetaCallEvent::placeMetaCall(QObject*) (in
/usr/lib/i386-linux-gnu/libQtCore.so.4.8.6)
==12227==    by 0x728A8C8: QObject::event(QEvent*) (in
/usr/lib/i386-linux-gnu/libQtCore.so.4.8.6)
==12227==
==12227== LEAK SUMMARY:
==12227==    definitely lost: 25,079 bytes in 108 blocks
==12227==    indirectly lost: 84,445 bytes in 4,975 blocks
==12227==      possibly lost: 1,194,355,851 bytes in 129,953 blocks
==12227==    still reachable: 273,164,475 bytes in 473,030 blocks
==12227==         suppressed: 0 bytes in 0 blocks
==12227== Reachable blocks (those to which a pointer was found) are not shown.
==12227== To see them, rerun with: --leak-check=full --show-leak-kinds=all
==12227==
==12227== For counts of detected and suppressed errors, rerun with: -v
==12227== ERROR SUMMARY: 6206 errors from 5654 contexts (suppressed: 0 from 0)

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