https://bugs.kde.org/show_bug.cgi?id=497163
--- Comment #3 from Stanislav <stankarpi...@gmail.com> ---
(In reply to Johannes Zarl-Zierl from comment #2)
> Hi Stanislav!
>
> Does the .videoThumbnails directory inside your image directory contain
> empty files, by any chance?
>
> Cheers,
> Johannes
Hi Johannes and Tobias,
Thank you for the reply!
I tried to reproduce the bug in the debugger using the main branch (Qt 6), but
so far I haven't got reliable results. I got one C++ exception and one crash
(see below), but then I could not reproduce the crash and thought it was
because the thumbnail indexing was finished. Then I renamed the thumbnails
directory to start from scratch. However, several times the process was
terminated by the OOM killer due to excessive RAM taken by the spawned ffmpeg
processes (I don't know for sure, unfortunately, I haven't analysed this
issue), I'm running this on a VM with 8 GB of RAM:
Ubuntu 24.10 (Kubuntu)
Linux kubuntu-virtualbox 6.11.0-13-generic #14-Ubuntu SMP PREEMPT_DYNAMIC Sat
Nov 30 23:51:51 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux
commit 42704b7389e4fe85bd4249d6813ee5735941e57c (HEAD -> master, origin/master,
origin/HEAD)
Author: l10n daemon script <scri...@kde.org>
Date: Thu Dec 12 01:30:26 2024 +0000
GIT_SILENT Sync po/docbooks with svn
-------------------------------------------------------------------------------------------------
1. Segmentation fault (the 2017_0101_000005_085A.MOV file is not empty and was
shown perfectly fine next time I run the program)
Thread 1 "kphotoalbum" received signal SIGSEGV, Segmentation fault.
0x00005555558022c0 in
BackgroundJobs::HandleVideoThumbnailRequestJob::sendResult
(this=0x5555b94d86e0, image=...) at
/home/kubuntu/kphotoalbum/BackgroundJobs/HandleVideoThumbnailRequestJob.cpp:75
75 m_request->client()->pixmapLoaded(m_request, image);
(gdb) bt 10
#0 0x00005555558022c0 in
BackgroundJobs::HandleVideoThumbnailRequestJob::sendResult
(this=0x5555b94d86e0, image=...) at
/home/kubuntu/kphotoalbum/BackgroundJobs/HandleVideoThumbnailRequestJob.cpp:75
#1 0x000055555580263d in
BackgroundJobs::HandleVideoThumbnailRequestJob::frameLoaded
(this=0x5555b94d86e0, image=...) at
/home/kubuntu/kphotoalbum/BackgroundJobs/HandleVideoThumbnailRequestJob.cpp:63
#2 0x0000555555802755 in
BackgroundJobs::HandleVideoThumbnailRequestJob::qt_static_metacall
(_o=0x5555b94d86e0, _c=<optimised out>, _id=<optimised out>, _a=<optimised
out>)
at
/home/kubuntu/kphotoalbum/build/kphotoalbum_autogen/include/moc_HandleVideoThumbnailRequestJob.cpp:112
#3 0x00007ffff59ba914 in doActivate<false> (sender=0x5555b97ddb60,
signal_index=3, argv=0x7fffffffd000) at
/usr/src/qt6-base-6.6.2+dfsg-12/src/corelib/kernel/qobject.cpp:4051
#4 0x00005555556fbdcc in ImageManager::ExtractOneVideoFrame::result
(this=0x5555b97ddb60, _t1=...) at
/home/kubuntu/kphotoalbum/build/kphotoalbum_autogen/include/moc_ExtractOneVideoFrame.cpp:188
#5 ImageManager::ExtractOneVideoFrame::frameFetched (this=0x5555b97ddb60) at
/home/kubuntu/kphotoalbum/ImageManager/ExtractOneVideoFrame.cpp:83
#6 0x00007ffff59ba5c4 in QtPrivate::QSlotObjectBase::call (this=<optimised
out>, r=0x5555b97ddb60, a=0x7fffffffd150, this=<optimised out>, r=<optimised
out>, a=<optimised out>)
at
/usr/src/qt6-base-6.6.2+dfsg-12/src/corelib/kernel/qobjectdefs_impl.h:433
#7 doActivate<false> (sender=0x5555b9818080, signal_index=10,
argv=0x7fffffffd150) at
/usr/src/qt6-base-6.6.2+dfsg-12/src/corelib/kernel/qobject.cpp:4039
#8 0x00007ffff5b02688 in QProcess::finished (this=<optimised out>,
_t1=<optimised out>, _t2=<optimised out>) at
/usr/src/qt6-base-6.6.2+dfsg-12/obj-x86_64-linux-gnu/src/corelib/Core_autogen/include/moc_qprocess.cpp:502
#9 0x00007ffff59ba914 in doActivate<false> (sender=0x5555bba80900,
signal_index=3, argv=0x7fffffffd270) at
/usr/src/qt6-base-6.6.2+dfsg-12/src/corelib/kernel/qobject.cpp:4051
(More stack frames follow...)
(gdb) info args
this = 0x5555b94d86e0
image = {<QPaintDevice> = {_vptr.QPaintDevice = 0x5555558a7970 <vtable for
QImage@Qt_6+16>, painters = 0}, static staticMetaObject = {d = {superdata =
{direct = 0x0},
stringdata = 0x7ffff644d940 <(anonymous
namespace)::qt_meta_stringdata_CLASSQImageENDCLASS>, data = 0x7ffff644d7c0
<qt_meta_data_CLASSQImageENDCLASS>, static_metacall = 0x0, relatedMetaObjects =
0x0,
metaTypes = 0x7ffff65548c0 <qt_incomplete_metaTypeArray<(anonymous
namespace)::qt_meta_stringdata_CLASSQImageENDCLASS_t,
QtPrivate::TypeAndForceComplete<QImage::Format, std::integral_constant<bool,
true> >, QtPrivate::TypeAndForceComplete<QImage, std::integral_constant<bool,
true> > >>, extradata = 0x0}}, d = 0x5555b990b600}
(gdb) print m_request
$1 = (ImageManager::ImageRequest *) 0x5555ba97cfd0
(gdb) print *m_request
$2 = {_vptr.ImageRequest = 0x5555558a6b70 <vtable for
ImageManager::ImageRequest+16>, m_type =
ImageManager::ImageRequest::RequestType::ImageRequest, m_fileName =
{m_relativePath = {d = {d = 0x555563bc67f0,
ptr = 0x555563bc6800 u"To review files/HTC
backup/Full/vcamera.dod/video.dod/2017_0101_000005_085A.MOV", size = 79}},
m_absoluteFilePath = {d = {d = 0x555563bc68b0,
ptr = 0x555563bc68c0 u"/media/kubuntu/T7/To review files/HTC
backup/Full/vcamera.dod/video.dod/2017_0101_000005_085A.MOV", size = 97}},
m_isNull = false}, m_width = 1024, m_height = 768, m_client = 0x5555b7691a30,
m_angle = 0,
m_fullSize = {wd = -1, ht = -1}, m_priority = ImageManager::ViewerPreload,
m_loadedOK = true, m_dontUpScale = false, m_isThumbnailRequest = false,
m_imageIsPreRotated = false}
-------------------------------------------------------------------------------------------------
2. C++ Exception for an empty file:
libstdc++.so.6!__cxa_throw (Unknown Source:0)
libraw.so.23![Unknown/Just-In-Time compiled code] (Unknown Source:0)
libraw.so.23!LibRaw::open_datastream(LibRaw_abstract_datastream*) (Unknown
Source:0)
kimg_raw.so![Unknown/Just-In-Time compiled code] (Unknown Source:0)
libQt6Gui.so.6!QImageReader::imageFormat(QIODevice*) (Unknown Source:0)
libQt6Gui.so.6!QImageReader::imageFormat(QString const&) (Unknown Source:0)
Utilities::isJPEG(const DB::FileName & fileName)
(/home/kubuntu/kphotoalbum/Utilities/FastJpeg.cpp:188)
ImageManager::ImageLoaderThread::loadImage(ImageManager::ImageLoaderThread *
const this, ImageManager::ImageRequest * request, bool & ok)
(/home/kubuntu/kphotoalbum/ImageManager/ImageLoaderThread.cpp:82)
ImageManager::ImageLoaderThread::run(ImageManager::ImageLoaderThread * const
this) (/home/kubuntu/kphotoalbum/ImageManager/ImageLoaderThread.cpp:60)
libQt6Core.so.6![Unknown/Just-In-Time compiled code] (Unknown Source:0)
libc.so.6!start_thread(void * arg) (pthread_create.c:447)
libc.so.6!__GI___clone3() (clone3.S:78)
#0 0x00007ffff54bb35a in __cxa_throw () at
/lib/x86_64-linux-gnu/libstdc++.so.6
#1 0x00007fffe430505a in ??? () at /lib/x86_64-linux-gnu/libraw.so.23
#2 0x00007fffe438a514 in LibRaw::open_datastream(LibRaw_abstract_datastream*)
() at /lib/x86_64-linux-gnu/libraw.so.23
#3 0x00007fffeca259b4 in ??? () at
/usr/lib/x86_64-linux-gnu/qt6/plugins/imageformats/kimg_raw.so
#4 0x00007fffeca25d24 in ??? () at
/usr/lib/x86_64-linux-gnu/qt6/plugins/imageformats/kimg_raw.so
#5 0x00007ffff5f74d5c in ??? () at /lib/x86_64-linux-gnu/libQt6Gui.so.6
#6 0x00007ffff5f773a0 in QImageReader::imageFormat(QIODevice*) () at
/lib/x86_64-linux-gnu/libQt6Gui.so.6
#7 0x00007ffff5f774ab in QImageReader::imageFormat(QString const&) () at
/lib/x86_64-linux-gnu/libQt6Gui.so.6
#8 0x00005555558e3307 in Utilities::isJPEG (fileName=...) at
/home/kubuntu/kphotoalbum/Utilities/FastJpeg.cpp:188
#9 0x000055555574d91c in ImageManager::ImageLoaderThread::loadImage
(this=0x5555b7144670, request=0x7fffe0006420, ok=@0x7fffce1ff7df: false) at
/home/kubuntu/kphotoalbum/ImageManager/ImageLoaderThread.cpp:82
#10 0x000055555574d6a8 in ImageManager::ImageLoaderThread::run
(this=0x5555b7144670) at
/home/kubuntu/kphotoalbum/ImageManager/ImageLoaderThread.cpp:60
#11 0x00007ffff5ab5834 in ??? () at /lib/x86_64-linux-gnu/libQt6Core.so.6
#12 0x00007ffff50a1e2e in start_thread (arg=<optimised out>) at
./nptl/pthread_create.c:447
#13 0x00007ffff5133a4c in __GI___clone3 () at
../sysdeps/unix/sysv/linux/x86_64/clone3.S:78
-exec print fileName
$1 = (const DB::FileName &) @0x7fffce1ff760: {m_relativePath = {d = {d =
0x55556a72b1e0, ptr = 0x55556a72b1f0 u"To review files/HTC
backup/Full/Slack/IMG_20171117_191122.jpg", size = 61}, static _empty = 0
u'\000'}, m_absoluteFilePath = {d = {d = 0x55556a72b280, ptr = 0x55556a72b290
u"/media/kubuntu/T7/To review files/HTC
backup/Full/Slack/IMG_20171117_191122.jpg", size = 79}, static _empty = 0
u'\000'}, m_isNull = false}
$ stat IMG_20171117_191122.jpg
File: IMG_20171117_191122.jpg
Size: 0 Blocks: 0 IO Block: 131072 regular empty file
Device: 8,17 Inode: 3558241 Links: 1
Access: (0755/-rwxr-xr-x) Uid: ( 1000/ kubuntu) Gid: ( 1000/ kubuntu)
Access: 2024-12-13 13:26:58.000000000 +0000
Modify: 2017-11-17 16:11:22.000000000 +0000
Change: 2017-11-17 16:11:22.000000000 +0000
Birth: 2023-06-14 17:43:29.010000000 +0100
$ file IMG_20171117_191122.jpg
IMG_20171117_191122.jpg: empty
-------------------------------------------------------------------------------------------------
3. OOM Killer dmesg log
Dec 13 17:17:23 kubuntu-virtualbox kernel: Tasks state (memory values in
pages):
Dec 13 17:17:23 kubuntu-virtualbox kernel: [ pid ] uid tgid total_vm
rss rss_anon rss_file rss_shmem pgtables_bytes swapents oom_score_adj name
[...other lines omitted]
Dec 13 17:17:23 kubuntu-virtualbox kernel: [ 32893] 1000 32893 191297
67431 67302 129 0 929792 0 200 gdb
Dec 13 17:17:23 kubuntu-virtualbox kernel: [ 32916] 1000 32916 875180
504573 499724 783 4066 4845568 0 200 kphotoalbum
Dec 13 17:17:23 kubuntu-virtualbox kernel: [ 33194] 0 33194 119161
1592 1306 286 0 266240 0 0 fwupd
Dec 13 17:17:23 kubuntu-virtualbox kernel: [ 59488] 1000 59488 787532
433595 433103 492 0 4382720 0 200 ffmpeg
Dec 13 17:17:23 kubuntu-virtualbox kernel: [ 59531] 1000 59531 652165
378273 377419 854 0 3870720 0 200 ffmpeg
Dec 13 17:17:23 kubuntu-virtualbox kernel:
oom-kill:constraint=CONSTRAINT_NONE,nodemask=(null),cpuset=/,mems_allowed=0,global_oom,task_memcg=/user.slice/user-1000.slice/user@1000.service/app.slice/app-code@269c1bf1a3e843ee914e3bab80c1c>
Dec 13 17:17:23 kubuntu-virtualbox kernel: Out of memory: Killed process 32916
(kphotoalbum) total-vm:3500720kB, anon-rss:1998896kB, file-rss:3132kB,
shmem-rss:16264kB, UID:1000 pgtables:4732kB oom_score_adj:200
Regards,
Stanislav
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