Weekly appimage segfaulted while upgrading faces database, segfaults every time

[Michael Moore]

Hello,

I have been using 8.5 appimage and decided to try the weekly appimage. I'm
using the debug image
(digiKam-8.6.0-20250205T150105-Qt6-x86-64-debug.appimage)

It showed a dialog saying that the Face Recognition database was out of
date and results wouldn't be accurate until it was upgraded. I said yes to
the upgrade and then allowed the next dialog to download the 4 new image
recognition libraries.

A few moments later Digikam segfaulted.

When I start it again the database-upgrade notice doesn't return, but I
don't know that it completed successfully.

Q1 - Do I need to trigger something so that the face database upgrade is
complete?

After the segfault Digikam prompted to download the libraries again, but
this time those downloaded successfully.

Now when I try to run facial recognition I get a segfault every time. I set
the dialog to "Recognize faces only" and then click "Scan collection for
faces".

Q2 - Is this a known / expected segfault, or should I collect some more
info?

The last lines of output in the terminal look like this.

Digikam::DImg::load:
"/shared/big/no_backup/ro_photos/photos/2022/02/18/YFEZ0700.HEIC" : "HEIF"
file identified
Digikam::DMetadata::load: Loading metadata with "Exiv2" backend from
"/shared/big/no_backup/ro_photos/photos/2022/02/18/YFEZ0700.HEIC"
unknown: HEIF color profile found with size: 548
unknown: HEIF image size: ( 3024 x 4032 )
unknown: Decoded HEIF image properties: size( 4032 x 3024 ), Alpha: false ,
Color depth : 8
unknown: HEIF data container: 0x7f75e5d1d010
unknown: HEIC bytes per line: 12096
unknown: Color bytes depth: 8
unknown: Color multiplier: 1
Digikam::StackedView::setViewMode: Stacked View Mode :  1
Digikam::FocusPointGroup::load: FocusPointsGroup: no Point to load
Digikam::PreviewLoadingTask::execute: Try to get preview from
"/shared/big/no_backup/ro_photos/photos/2008/09/04/yellowstone blog -
07.jpg"
Digikam::PreviewLoadingTask::execute: Preview quality:  0
Digikam::DMetadata::load: Loading metadata with "Exiv2" backend from
"/shared/big/no_backup/ro_photos/photos/2008/09/04/yellowstone blog -
07.jpg"
Digikam::PreviewLoadingTask::loadImagePreview: Try to load DImg preview
from: "/shared/big/no_backup/ro_photos/photos/2008/09/04/yellowstone blog -
07.jpg"
Digikam::DImg::load:
"/shared/big/no_backup/ro_photos/photos/2008/09/04/yellowstone blog -
07.jpg" : "JPEG" file identified
Digikam::DMetadata::load: Loading metadata with "Exiv2" backend from
"/shared/big/no_backup/ro_photos/photos/2008/09/04/yellowstone blog -
07.jpg"
Digikam::FaceDb::setting: FaceDB SelectFaceSetting val ret = 0
Digikam::FaceDb::setting: FaceDB SelectFaceSetting val ret = 0
Digikam::FacesEngine::slotStart: Total is 28029
Digikam::DNNFaceDetectorYuNet::DNNFaceDetectorYuNet: Creating new instance
of DNNFaceDetectorYuNet
Digikam::DNNFaceDetectorYuNet::loadModels: Face detection model: "YuNet"
ready
Digikam::MLPipelineFoundation::checkMoreWorkers:
MLPipelineFoundation::checkMoreWorkers: Sending signal to more workers
Digikam::MLPipelineFoundation::checkMoreWorkers:
MLPipelineFoundation::checkMoreWorkers: Sending signal to more workers
Digikam::MLPipelineFoundation::checkMoreWorkers:
MLPipelineFoundation::checkMoreWorkers: Sending signal to more workers
[ WARN:0 at 80.706] global ocl4dnn_conv_spatial.cpp:1931 loadTunedConfig
OpenCV(ocl4dnn): consider to specify kernel configuration cache directory
through OPENCV_OCL4DNN_CONFIG_PATH p
arameter.
OpenCL program build log: dnn/dummy
Status -11: CL_BUILD_PROGRAM_FAILURE
-cl-no-subgroup-ifp
Error in processing command line: Don't understand command line argument
"-cl-no-subgroup-ifp"!
Digikam::DNNSFaceExtractor::getFaceEmbedding: Finish aligning face in  98
 ms
Digikam::DNNSFaceExtractor::getFaceEmbedding: Start neural network
Digikam::DNNSFaceExtractor::getFaceEmbedding: No face landmarks found
Digikam::DNNSFaceExtractor::getFaceEmbedding: Finish computing face
embedding in  106  ms
Digikam::DNNSFaceExtractor::getFaceEmbedding: No face landmarks found
Digikam::DNNSFaceExtractor::getFaceEmbedding: Finish computing face
embedding in  122  ms
Digikam::DNNSFaceExtractor::getFaceEmbedding: No face landmarks found
Digikam::DNNSFaceExtractor::getFaceEmbedding: Finish computing face
embedding in  142  ms
Digikam::DNNSFaceExtractor::getFaceEmbedding: No face landmarks found
Digikam::DNNSFaceExtractor::getFaceEmbedding: Finish computing face
embedding in  161  ms
Digikam::DNNSFaceExtractor::getFaceEmbedding: No face landmarks found
Digikam::DNNSFaceExtractor::getFaceEmbedding: Finish computing face
embedding in  104  ms
Digikam::DNNSFaceExtractor::getFaceEmbedding: No face landmarks found
Digikam::DNNSFaceExtractor::getFaceEmbedding: Finish computing face
embedding in  115  ms
Digikam::DNNSFaceExtractor::getFaceEmbedding: No face landmarks found
Digikam::DNNSFaceExtractor::getFaceEmbedding: Finish computing face
embedding in  72  ms
Digikam::DNNSFaceExtractor::getFaceEmbedding: No face landmarks found
Digikam::DNNSFaceExtractor::getFaceEmbedding: Finish computing face
embedding in  49  ms
Digikam::DNNSFaceExtractor::getFaceEmbedding: No face landmarks found
Digikam::DNNSFaceExtractor::getFaceEmbedding: Finish computing face
embedding in  56  ms
Digikam::DNNSFaceExtractor::getFaceEmbedding: No face landmarks found
Digikam::DNNSFaceExtractor::getFaceEmbedding: Finish computing face
embedding in  13  ms
Digikam::DNNSFaceExtractor::getFaceEmbedding: Finish computing face
embedding in  325  ms
Digikam::FaceClassifier::predictFullSearch:
FaceClassifier::predictFullSearch: classifier prediction is:  159
 completed in  0
Digikam::DNNSFaceExtractor::getFaceEmbedding: Finish aligning face in  426
 ms
Digikam::DNNSFaceExtractor::getFaceEmbedding: Start neural network
Digikam::DNNSFaceExtractor::getFaceEmbedding: No face landmarks found
Digikam::DNNSFaceExtractor::getFaceEmbedding: Finish computing face
embedding in  68  ms
Digikam::DNNSFaceExtractor::getFaceEmbedding: Finish computing face
embedding in  105  ms
Digikam::FaceClassifier::predictFullSearch:
FaceClassifier::predictFullSearch: classifier prediction is:  -1  completed
in  0
Digikam::DNNSFaceExtractor::getFaceEmbedding: Finish aligning face in  532
 ms
Digikam::DNNSFaceExtractor::getFaceEmbedding: Start neural network
/tmp/user/1001/.mount_digiKaO6gtZg/AppRun: line 261: 149464 Segmentation
fault      (core dumped) digikam $@

It says core dumped, but I don't see the dump file.

Thanks,
Michael
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