Bug 447593

Summary: segfault when moving large number of photos between albums
Product: [Applications] digikam Reporter: Bob Billson <reb>
Component: Plugin-DImg-RAWAssignee: Digikam Developers <digikam-bugs-null>
Status: RESOLVED FIXED    
Severity: crash CC: caulier.gilles, metzpinguin
Priority: NOR Keywords: drkonqi
Version: 7.4.0   
Target Milestone: ---   
Platform: Debian testing   
OS: Linux   
Latest Commit: Version Fixed In: 8.1.0
Sentry Crash Report:

Description Bob Billson 2021-12-28 06:51:43 UTC 
Application: digikam (7.4.0)

Qt Version: 5.15.2
Frameworks Version: 5.88.0
Operating System: Linux 5.15.11-grue x86_64
Windowing System: X11
Distribution: Debian GNU/Linux bookworm/sid
DrKonqi: 5.23.4 [KCrashBackend]

-- Information about the crash:
Compiled v7.4.0 from sources.

Crash happens when trying to copy photos from laptop drive to an external USB drive connected to the laptop. The drive is mounted, visible and has full read/write permissions.

Selected a large group of photos (approximately 800) in an album by left clicking on first photo.
<SHIFT> left click on last photo.
Left click and drag highlighted photos to new album.
Window opens asking whether to copy or move. Move is selected.
Seems to start moving then crashes with segfault.
Restart DigiKam.
Window open scanning for new photos.
As soon as this window closes DigiKam segfaults.
This second crash repeats everytime DigiKam is restarted. Had to resort to use Appimage bundle to have a usable program. I did not attempt moving the photos with the Appimage version.

The crash can be reproduced every time.

-- Backtrace:
Application: digiKam (digikam), signal: Segmentation fault

[KCrash Handler]
#4  0x00007f2f0d5e2e20 in QString::operator=(QString const&) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f2f0ef05828 in Digikam::DRawDecoderSettings::operator=(Digikam::DRawDecoderSettings const&) (this=0x7f2ed00c1af8, o=...) at /home/reb/src/digikam/digikam-7.4.0/core/libs/rawengine/drawdecodersettings.cpp:132
#6  0x00007f2ed826ac5a in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/digikam/dimg/DImg_RAW_Plugin.so
#7  0x00007f2ed826a456 in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/digikam/dimg/DImg_RAW_Plugin.so
#8  0x00007f2f0ed4df6d in Digikam::DImg::load(QString const&, int, Digikam::DImgLoaderObserver*, Digikam::DRawDecoding const&) (this=0x7f2ed0180c68, filePath=..., loadFlagsInt=1, observer=0x0, rawDecodingSettings=...) at /home/reb/src/digikam/digikam-7.4.0/core/libs/dimg/dimg_fileio.cpp:128
#9  0x00007f2f0ed4ee16 in Digikam::DImg::loadItemInfo(QString const&, bool, bool, bool, bool) (this=this@entry=0x7f2ed0180c68, filePath=..., loadMetadata=loadMetadata@entry=false, loadICCData=loadICCData@entry=false, loadUniqueHash=loadUniqueHash@entry=false, loadImageHistory=loadImageHistory@entry=false) at /home/reb/src/digikam/digikam-7.4.0/core/libs/dimg/dimg_fileio.cpp:55
#10 0x00007f2f0f79a47d in Digikam::ItemScanner::loadFromDisk() (this=this@entry=0x7f2eda3576d8) at /home/reb/src/digikam/digikam-7.4.0/core/libs/database/item/scanner/itemscanner.cpp:132
#11 0x00007f2f0f79d562 in Digikam::ItemScanner::newFile(int) (this=this@entry=0x7f2eda3576d8, albumId=albumId@entry=837) at /home/reb/src/digikam/digikam-7.4.0/core/libs/database/item/scanner/itemscanner_database.cpp:109
#12 0x00007f2f0f6e3c42 in Digikam::CollectionScanner::scanNewFile(QFileInfo const&, int) (this=0x7f2eda357a60, info=<optimized out>, albumId=837) at /home/reb/src/digikam/digikam-7.4.0/core/libs/database/collection/collectionscanner_scan.cpp:1026
#13 0x00007f2f0f6e6913 in Digikam::CollectionScanner::scanAlbum(Digikam::CollectionLocation const&, QString const&, bool) (this=0x7f2eda357a60, location=..., album=..., checkDate=false) at /home/reb/src/digikam/digikam-7.4.0/core/libs/database/collection/collectionscanner_scan.cpp:793
#14 0x00007f2f0f6e73ed in Digikam::CollectionScanner::scanAlbumRoot(Digikam::CollectionLocation const&) (this=0x7f2eda357a60, location=...) at /home/reb/src/digikam/digikam-7.4.0/core/libs/database/collection/collectionscanner_scan.cpp:464
#15 0x00007f2f0f6e831b in Digikam::CollectionScanner::completeScan() (this=this@entry=0x7f2eda357a60) at /home/reb/src/digikam/digikam-7.4.0/core/libs/database/collection/collectionscanner_scan.cpp:95
#16 0x00007f2f0fc0b345 in Digikam::ScanController::run() (this=0x7f2f101329a0 <Digikam::(anonymous namespace)::Q_QGS_creator::innerFunction()::holder>) at /home/reb/src/digikam/digikam-7.4.0/core/libs/database/utils/scan/scancontroller.cpp:248
#17 0x00007f2f0d561961 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#18 0x00007f2f0b6fad80 in start_thread (arg=0x7f2eda35a640) at pthread_create.c:481
#19 0x00007f2f0d1a1b6f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f2eeca2c640 (LWP 675437) "digikam:gdrv0"):
#1  0x00007f2f0b70715b in __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x5584cbaa2f50, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at ../sysdeps/nptl/futex-internal.c:123
#2  0x00007f2f0b700c30 in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x5584cbaa2f00, cond=0x5584cbaa2f28) at pthread_cond_wait.c:504
#3  __pthread_cond_wait (cond=0x5584cbaa2f28, mutex=0x5584cbaa2f00) at pthread_cond_wait.c:619
#4  0x00007f2ee68393eb in  () at /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#5  0x00007f2ee6838ec7 in  () at /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#6  0x00007f2f0b6fad80 in start_thread (arg=0x7f2eeca2c640) at pthread_create.c:481
#7  0x00007f2f0d1a1b6f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f2eed23d640 (LWP 675436) "digikam:disk$0"):
#1  0x00007f2f0b70715b in __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x5584cbb4fa98, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at ../sysdeps/nptl/futex-internal.c:123
#2  0x00007f2f0b700c30 in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x5584cbb4fa48, cond=0x5584cbb4fa70) at pthread_cond_wait.c:504
#3  __pthread_cond_wait (cond=0x5584cbb4fa70, mutex=0x5584cbb4fa48) at pthread_cond_wait.c:619
#4  0x00007f2ee68393eb in  () at /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#5  0x00007f2ee6838ec7 in  () at /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#6  0x00007f2f0b6fad80 in start_thread (arg=0x7f2eed23d640) at pthread_create.c:481
#7  0x00007f2f0d1a1b6f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f2eee1ce640 (LWP 675434) "QDBusConnection"):
#1  0x00007f2f00bc6954 in g_main_context_check () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f2f00bc6ec5 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f2f00bc703f in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f2f0d79d1c6 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f2f0d74452b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f2f0d56082e in QThread::exec() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f2f0bc6c4d7 in  () at /lib/x86_64-linux-gnu/libQt5DBus.so.5
#8  0x00007f2f0d561961 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f2f0b6fad80 in start_thread (arg=0x7f2eee1ce640) at pthread_create.c:481
#10 0x00007f2f0d1a1b6f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f2eeee2d640 (LWP 675433) "QXcbEventQueue"):
#1  0x00007f2f00268d02 in  () at /lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f2f0026b05a in xcb_wait_for_event () at /lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f2eef152520 in  () at /lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007f2f0d561961 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f2f0b6fad80 in start_thread (arg=0x7f2eeee2d640) at pthread_create.c:481
#6  0x00007f2f0d1a1b6f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f2eef59ca40 (LWP 675430) "digikam"):
#1  0x00007f2f00bc4de8 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f2f00bc635b in g_main_context_prepare () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f2f00bc6e4b in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f2f00bc703f in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f2f0d79d1c6 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f2f0d74452b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f2f0fc0c9af in Digikam::ScanController::completeCollectionScanCore(bool, bool, bool) (this=0x7f2f101329a0 <Digikam::(anonymous namespace)::Q_QGS_creator::innerFunction()::holder>, needTotalFiles=<optimized out>, defer=<optimized out>, fastScan=<optimized out>) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qflags.h:121
#8  0x00007f2f0fd82eb9 in Digikam::NewItemsFinder::slotStart() (this=0x5584cfae1460) at /home/reb/src/digikam/digikam-7.4.0/core/utilities/maintenance/newitemsfinder.cpp:119
#9  0x00007f2f0d77212e in QObject::event(QEvent*) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f2f0e2176bf in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#11 0x00007f2f0d745b1a in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007f2f0d748b67 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007f2f0d79dad3 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#14 0x00007f2f00bc6cdb in g_main_context_dispatch () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#15 0x00007f2f00bc6f88 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#16 0x00007f2f00bc703f in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#17 0x00007f2f0d79d154 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#18 0x00007f2f0d74452b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x00007f2f0d74c800 in QCoreApplication::exec() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x00005584c9e561ed in main(int, char**) (argc=<optimized out>, argv=<optimized out>) at /home/reb/src/digikam/digikam-7.4.0/core/app/main/main.cpp:488
[Inferior 1 (process 675430) detached]

Possible duplicates by query: bug 427333, bug 426597, bug 425230, bug 424133, bug 421043.

Reported using DrKonqi
Comment 1 caulier.gilles 2021-12-28 07:12:52 UTC 
Sound like a duplicate of bug #426597
Comment 2 Maik Qualmann 2021-12-28 08:35:11 UTC 
If the crash cannot be reproduced with the AppImage, the cause is probably due to your compiled version. I can see in the other threads that QDBus communication is present. We already know the problems with * buntu and Debian systems when digiKam is compiled with QDBus support. Please compile digiKam without QDBus support and try again.

Maik
Comment 3 caulier.gilles 2022-01-14 21:52:18 UTC 
Hi Bob, 

Can you reproduce the crash using current digiKam 7.5.0 pre-release bundle available here :

https://files.kde.org/digikam/

Thanks in advance

Gilles Caulier
Comment 4 caulier.gilles 2023-04-19 14:38:04 UTC 
@Bob

digiKam 8.0.0 is out. Problem still reproducible ?

Best regards
Gilles Caulier
Comment 5 Bob Billson 2023-04-22 00:01:26 UTC 
(In reply to caulier.gilles from comment #4)
> @Bob
> 
> digiKam 8.0.0 is out. Problem still reproducible ?
> 
> Best regards
> Gilles Caulier

No the problem cannot be reproduced on 8.0.0.