https://bugs.kde.org/show_bug.cgi?id=464646

            Bug ID: 464646
           Summary: Any faces detection command cause Core Dump error
    Classification: Applications
           Product: digikam
           Version: 7.9.0
          Platform: Archlinux
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: Faces-Engine
          Assignee: digikam-bugs-n...@kde.org
          Reporter: olivier.berth...@xunil.fr
  Target Milestone: ---

Created attachment 155498
  --> https://bugs.kde.org/attachment.cgi?id=155498&action=edit
coredumpct debug

SUMMARY
When i launch any command on face detection (including "Clear and rebuild all
training data"), digikam abort. This bug occurs with or without YOLO v3.

STEPS TO REPRODUCE
1. Launch digikam
2. Execute "Scan for faces" on an album or a collection

OBSERVED RESULT
/usr/include/c++/12.2.0/bits/stl_vector.h:1123: std::vector<_Tp,
_Alloc>::reference std::vector<_Tp, _Alloc>::operator[](size_type) [with _Tp =
float; _Alloc = std::allocator<float>; reference = float&; size_type = long
unsigned int]: Assertion '__n < this->size()' failed.
Aborted (core dumped)

EXPECTED RESULT
Faces detection ends without core dump.

SOFTWARE/OS VERSIONS
Linux:  Linux 6.1.7-arch1-1 #1 SMP PREEMPT_DYNAMIC Wed, 18 Jan 2023 19:54:38
+0000 x86_64 GNU/Linux
GNOME Version: 43.2
Windowing System: Wayland
Qt Version: 5.15.8
LibOpenCV: 4.7.0
Database backend: QMYSQL

ADDITIONAL INFORMATION
GDB report:
> gdb /usr/local/bin/digikam
> (gdb) catch throw
> (gdb) run
> Starting program: /usr/local/bin/digikam
> ...
> digikam.general: Action Thread run  1  new jobs
> [New Thread 0x7fff3b7fe6c0 (LWP 9217)]
> digikam.general: false true
> digikam.general: One job is done
> digikam.general: Cancel Main Thread
> [Thread 0x7ffedbfff6c0 (LWP 9216) exited]
> [Thread 0x7fff3b7fe6c0 (LWP 9217) exited]
> digikam.general: Check for finish:  0 packages, 449 infos to filter, 
> hasFinished() false
> digikam.general: Check for finish:  0 packages, 9 infos to filter, 
> hasFinished() false
> digikam.facedb: YOLO model: 
> "/home/moi/.local/share/digikam/facesengine/yolov3-face.cfg" , YOLO data: 
> "/home/moi/.local/share/digikam/facesengine/yolov3-wider_16000.weights"
> digikam.general: Try to get preview from 
> "/home/moi/Photos/Olivier/Diapos/1977/19770100 - {diapos_Date_1977_01_02-16} 
> - [DIAPO] - (Jura) -  Panorama sur les Aples_v1.jpg"
> digikam.general: Preview quality:  2
> digikam.dimg: "/home/moi/Photos/Olivier/Diapos/1977/19770100 - 
> {diapos_Date_1977_01_02-16} - [DIAPO] - (Jura) -  Panorama sur les 
> Aples_v1.jpg" : "JPEG" file identified
> digikam.metaengine: Loading metadata with "Exiv2" backend from 
> "/home/moi/Photos/Olivier/Diapos/1977/19770100 - {diapos_Date_1977_01_02-16} 
> - [DIAPO] - (Jura) -  Panorama sur les Aples_v1.jpg"
> digikam.dimg.jpeg: Start of Image  ( 1 )
> digikam.dimg.jpeg: JFIF APP0 marker: version 1.01, density 1x1  0  ( 1 )
> digikam.dimg.jpeg: Miscellaneous marker 0xe1, length 102  ( 1 )
> digikam.dimg.jpeg: Miscellaneous marker 0xe1, length 5066  ( 1 )
> digikam.dimg.jpeg: Miscellaneous marker 0xe2, length 65510  ( 1 )
> digikam.dimg.jpeg: Miscellaneous marker 0xe2, length 65510  ( 1 )
> digikam.dimg.jpeg: Miscellaneous marker 0xe2, length 65510  ( 1 )
> digikam.dimg.jpeg: Miscellaneous marker 0xe2, length 21366  ( 1 )
> digikam.dimg.jpeg: Miscellaneous marker 0xed, length 162  ( 1 )
> digikam.dimg.jpeg: Define Quantization Table 0  precision 0  ( 1 )
> digikam.dimg.jpeg: Define Quantization Table 1  precision 0  ( 1 )
> digikam.dimg.jpeg: Start Of Frame 0xc0: width=10368, height=7200, 
> components=3  ( 1 )
> digikam.dimg.jpeg:     Component 1: 1hx1v q=0  ( 1 )
> digikam.dimg.jpeg:     Component 2: 1hx1v q=1  ( 1 )
> digikam.dimg.jpeg:     Component 3: 1hx1v q=1  ( 1 )
> digikam.dimg.jpeg: Define Huffman Table 0x00  ( 1 )
> digikam.dimg.jpeg:           0   1   5   1   1   1   1   1  ( 2 )
> digikam.dimg.jpeg:           1   0   0   0   0   0   0   0  ( 2 )
> digikam.dimg.jpeg: Define Huffman Table 0x10  ( 1 )
> digikam.dimg.jpeg:           0   2   1   3   3   2   4   3  ( 2 )
> digikam.dimg.jpeg:           5   5   4   4   0   0   1 125  ( 2 )
> digikam.dimg.jpeg: Define Huffman Table 0x01  ( 1 )
> digikam.dimg.jpeg:           0   3   1   1   1   1   1   1  ( 2 )
> digikam.dimg.jpeg:           1   1   1   0   0   0   0   0  ( 2 )
> digikam.dimg.jpeg: Define Huffman Table 0x11  ( 1 )
> digikam.dimg.jpeg:           0   2   1   2   4   4   3   4  ( 2 )
> digikam.dimg.jpeg:           7   5   4   4   0   1   2 119  ( 2 )
> digikam.dimg.jpeg: Start Of Scan: 3 components  ( 1 )
> digikam.dimg.jpeg:     Component 1: dc=0 ac=0  ( 1 )
> digikam.dimg.jpeg:     Component 2: dc=1 ac=1  ( 1 )
> digikam.dimg.jpeg:     Component 3: dc=1 ac=1  ( 1 )
> digikam.dimg.jpeg:   Ss=0, Se=63, Ah=0, Al=0  ( 1 )
> digikam.dimg.jpeg: End Of Image  ( 1 )
> [Thread 0x7fff397fa6c0 (LWP 8749) exited]
> [Thread 0x7fff177fe6c0 (LWP 8752) exited]
> [Thread 0x7fff39ffb6c0 (LWP 8748) exited]
> [Thread 0x7fff3affd6c0 (LWP 8746) exited]
> [Thread 0x7fff3a7fc6c0 (LWP 8747) exited]
> [Thread 0x7fff17fff6c0 (LWP 8751) exited]
> digikam.general: Try to get preview from 
> "/home/moi/Photos/Olivier/Diapos/1977/19770100 - {diapos_Date_1977_01_02-17} 
> - [DIAPO] - (Jura) -  Panorama sur les Aples_v1.jpg"
> digikam.general: Preview quality:  2
> digikam.dimg: "/home/moi/Photos/Olivier/Diapos/1977/19770100 - 
> {diapos_Date_1977_01_02-17} - [DIAPO] - (Jura) -  Panorama sur les 
> Aples_v1.jpg" : "JPEG" file identified
> digikam.metaengine: Loading metadata with "Exiv2" backend from 
> "/home/moi/Photos/Olivier/Diapos/1977/19770100 - {diapos_Date_1977_01_02-17} 
> - [DIAPO] - (Jura) -  Panorama sur les Aples_v1.jpg"
> digikam.dimg.jpeg: Start of Image  ( 1 )
> digikam.dimg.jpeg: JFIF APP0 marker: version 1.01, density 1x1  0  ( 1 )
> digikam.dimg.jpeg: Miscellaneous marker 0xe1, length 102  ( 1 )
> digikam.dimg.jpeg: Miscellaneous marker 0xe1, length 5066  ( 1 )
> digikam.dimg.jpeg: Miscellaneous marker 0xe2, length 65510  ( 1 )
> digikam.dimg.jpeg: Miscellaneous marker 0xe2, length 65510  ( 1 )
> digikam.dimg.jpeg: Miscellaneous marker 0xe2, length 65510  ( 1 )
> digikam.dimg.jpeg: Miscellaneous marker 0xe2, length 21366  ( 1 )
> digikam.dimg.jpeg: Miscellaneous marker 0xed, length 162  ( 1 )
> digikam.dimg.jpeg: Define Quantization Table 0  precision 0  ( 1 )
> digikam.dimg.jpeg: Define Quantization Table 1  precision 0  ( 1 )
> digikam.dimg.jpeg: Start Of Frame 0xc0: width=10368, height=7200, 
> components=3  ( 1 )
> digikam.dimg.jpeg:     Component 1: 1hx1v q=0  ( 1 )
> digikam.dimg.jpeg:     Component 2: 1hx1v q=1  ( 1 )
> digikam.dimg.jpeg:     Component 3: 1hx1v q=1  ( 1 )
> digikam.dimg.jpeg: Define Huffman Table 0x00  ( 1 )
> digikam.dimg.jpeg:           0   1   5   1   1   1   1   1  ( 2 )
> digikam.dimg.jpeg:           1   0   0   0   0   0   0   0  ( 2 )
> digikam.dimg.jpeg: Define Huffman Table 0x10  ( 1 )
> digikam.dimg.jpeg:           0   2   1   3   3   2   4   3  ( 2 )
> digikam.dimg.jpeg:           5   5   4   4   0   0   1 125  ( 2 )
> digikam.dimg.jpeg: Define Huffman Table 0x01  ( 1 )
> digikam.dimg.jpeg:           0   3   1   1   1   1   1   1  ( 2 )
> digikam.dimg.jpeg:           1   1   1   0   0   0   0   0  ( 2 )
> digikam.dimg.jpeg: Define Huffman Table 0x11  ( 1 )
> digikam.dimg.jpeg:           0   2   1   2   4   4   3   4  ( 2 )
> digikam.dimg.jpeg:           7   5   4   4   0   1   2 119  ( 2 )
> digikam.dimg.jpeg: Start Of Scan: 3 components  ( 1 )
> digikam.dimg.jpeg:     Component 1: dc=0 ac=0  ( 1 )
> digikam.dimg.jpeg:     Component 2: dc=1 ac=1  ( 1 )
> digikam.dimg.jpeg:     Component 3: dc=1 ac=1  ( 1 )
> digikam.dimg.jpeg:   Ss=0, Se=63, Ah=0, Al=0  ( 1 )
> digikam.dimg.jpeg: End Of Image  ( 1 )
> [New Thread 0x7fff17fff6c0 (LWP 9220)]
> [New Thread 0x7fff3a7fc6c0 (LWP 9221)]
> [New Thread 0x7fff3affd6c0 (LWP 9222)]
> [New Thread 0x7fff177fe6c0 (LWP 9223)]
> [New Thread 0x7fff3b6fd6c0 (LWP 9224)]
> [New Thread 0x7fff391636c0 (LWP 9226)]
> [New Thread 0x7fff395646c0 (LWP 9225)]
> /usr/include/c++/12.2.0/bits/stl_vector.h:1123: std::vector<_Tp, 
> _Alloc>::reference std::vector<_Tp, _Alloc>::operator[](size_type) [with _Tp 
> = float; _Alloc = std::allocator<float>; reference = float&; size_type = long 
> unsigned int]: Assertion '__n < this->size()' failed.
> /usr/include/c++/12.2.0/bits/stl_vector.h:1123: std::vector<_Tp, 
> _Alloc>::reference std::vector<_Tp, _Alloc>::operator[](size_type) [with _Tp 
> = float; _Alloc = std::allocator<float>; reference = float&; size_type = long 
> unsigned int]: Assertion '__n < this->size()' failed.
> /usr/include/c++/12.2.0/bits/stl_vector.h:1123: std::vector<_Tp, 
> _Alloc>::reference std::vector<_Tp, _Alloc>::operator[](size_type) [with _Tp 
> = float; _Alloc = std::allocator<float>; reference = float&; size_type = long 
> unsigned int]: Assertion '__n < this->size()' failed.
> /usr/include/c++/12.2.0/bits/stl_vector.h:1123: std::vector<_Tp, 
> _Alloc>::reference std::vector<_Tp, _Alloc>::operator[](size_type) [with _Tp 
> = float; _Alloc = std::allocator<float>; reference = float&; size_type = long 
> unsigned int]: Assertion '__n < this->size()' failed.
> /usr/include/c++/12.2.0/bits/stl_vector.h:1123: std::vector<_Tp, 
> _Alloc>::reference std::vector<_Tp, _Alloc>::operator[](size_type) [with _Tp 
> = float; _Alloc = std::allocator<float>; reference = float&; size_type = long 
> unsigned int]: Assertion '__n < this->size()' failed.
> /usr/include/c++/12.2.0/bits/stl_vector.h:1123: std::vector<_Tp, 
> _Alloc>::reference std::vector<_Tp, _Alloc>::operator[](size_type) [with _Tp 
> = float; _Alloc = std::allocator<float>; reference = float&; size_type = long 
> unsigned int]: Assertion '__n < this->size()' failed.
> /usr/include/c++/12.2.0/bits/stl_vector.h:1123: std::vector<_Tp, 
> _Alloc>::reference std::vector<_Tp, _Alloc>::operator[](size_type) [with _Tp 
> = float; _Alloc = std::allocator<float>; reference = float&; size_type = long 
> unsigned int]: Assertion '__n < this->size()' failed.
> /usr/include/c++/12.2.0/bits/stl_vector.h:1123: std::vector<_Tp, 
> _Alloc>::reference std::vector<_Tp, _Alloc>::operator[](size_type) [with _Tp 
> = float; _Alloc = std::allocator<float>; reference = float&; size_type = long 
> unsigned int]: Assertion '__n < this->size()' failed.
> 
> Thread 139 "Thread (pooled)" received signal SIGABRT, Aborted.
> [Switching to Thread 0x7fff3affd6c0 (LWP 9222)]
> __pthread_kill_implementation (threadid=<optimized out>, signo=signo@entry=6, 
> no_tid=no_tid@entry=0) at pthread_kill.c:44
> 44          return INTERNAL_SYSCALL_ERROR_P (ret) ? INTERNAL_SYSCALL_ERRNO 
> (ret) : 0;
> (gdb) bt
> #0  __pthread_kill_implementation (threadid=<optimized out>, 
> signo=signo@entry=6, no_tid=no_tid@entry=0) at pthread_kill.c:44
> #1  0x00007ffff36a16b3 in __pthread_kill_internal (signo=6, 
> threadid=<optimized out>) at pthread_kill.c:78
> #2  0x00007ffff3651938 in __GI_raise (sig=sig@entry=6) at 
> ../sysdeps/posix/raise.c:26
> #3  0x00007ffff363b53d in __GI_abort () at abort.c:79
> #4  0x00007ffff38d30a2 in std::__glibcxx_assert_fail(char const*, int, char 
> const*, char const*) (file=<optimized out>, line=<optimized out>, 
> function=<optimized out>, condition=<optimized out>) at 
> /usr/src/debug/gcc/gcc/libstdc++-v3/src/c++11/debug.cc:60
> #5  0x00007fffe7bdc26d in  () at /usr/lib/libopencv_dnn.so.407
> #6  0x00007fffe4e97a0e in  () at /usr/lib/libopencv_core.so.407
> #7  0x00007fffe4e8ff7b in  () at /usr/lib/libopencv_core.so.407
> #8  0x00007fffe4ea35c7 in  () at /usr/lib/libopencv_core.so.407
> #9  0x00007fffd4d8a48b in  () at /usr/lib/libtbb.so.12
> #10 0x00007fffd4d8c169 in  () at /usr/lib/libtbb.so.12
> #11 0x00007ffff369f8fd in start_thread (arg=<optimized out>) at 
> pthread_create.c:442
> #12 0x00007ffff3721d20 in clone3 () at 
> ../sysdeps/unix/sysv/linux/x86_64/clone3.S:81
> (gdb) info threads
>   Id   Target Id                                          Frame 
>   1    Thread 0x7fffd2764200 (LWP 8690) "digikam"         0x00007ffff371437f 
> in __GI___poll (fds=0x55555f0fa830, nfds=14, timeout=1501) at 
> ../sysdeps/unix/sysv/linux/poll.c:29
>   2    Thread 0x7fffd21bb6c0 (LWP 8699) "QDBusConnection" 0x00007ffff371437f 
> in __GI___poll (fds=0x7fffcc01c6c0, nfds=4, timeout=-1) at 
> ../sysdeps/unix/sysv/linux/poll.c:29
>   3    Thread 0x7fffd19ba6c0 (LWP 8700) "QXcbEventQueue"  0x00007ffff371437f 
> in __GI___poll (fds=fds@entry=0x7fffd19b9288, nfds=nfds@entry=1, 
> timeout=timeout@entry=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
>   4    Thread 0x7fffcbfff6c0 (LWP 8701) "gmain"           0x00007ffff371437f 
> in __GI___poll (fds=0x555555770690, nfds=1, timeout=-1) at 
> ../sysdeps/unix/sysv/linux/poll.c:29
>   6    Thread 0x7fffcaffd6c0 (LWP 8703) "gdbus"           0x00007ffff371437f 
> in __GI___poll (fds=0x7fffb800f620, nfds=2, timeout=-1) at 
> ../sysdeps/unix/sysv/linux/poll.c:29
>   7    Thread 0x7fffca7fc6c0 (LWP 8704) "dconf worker"    0x00007ffff371437f 
> in __GI___poll (fds=0x55555578aa30, nfds=1, timeout=-1) at 
> ../sysdeps/unix/sysv/linux/poll.c:29
>   8    Thread 0x7fffb7fff6c0 (LWP 8705) "digikam:disk$0"  
> __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, 
> expected=0, futex_word=0x555555a733c8) at futex-internal.c:57
>   9    Thread 0x7fffb77fe6c0 (LWP 8706) "digikam:sh0"     
> __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, 
> expected=0, futex_word=0x555555a76690) at futex-internal.c:57
>   10   Thread 0x7fffb6ffd6c0 (LWP 8707) "digikam:sh1"     
> __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, 
> expected=0, futex_word=0x555555a76690) at futex-internal.c:57
>   11   Thread 0x7fffb67fc6c0 (LWP 8708) "digikam:sh2"     
> __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, 
> expected=0, futex_word=0x555555a76690) at futex-internal.c:57
>   12   Thread 0x7fffb5ffb6c0 (LWP 8709) "digikam:sh3"     
> __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, 
> expected=0, futex_word=0x555555a76690) at futex-internal.c:57
>   13   Thread 0x7fffb57fa6c0 (LWP 8710) "digikam:sh4"     
> __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, 
> expected=0, futex_word=0x555555a76690) at futex-internal.c:57
>   14   Thread 0x7fffb4ff96c0 (LWP 8711) "digikam:sh5"     
> __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, 
> expected=0, futex_word=0x555555a76690) at futex-internal.c:57
>   15   Thread 0x7fff8bfff6c0 (LWP 8712) "digikam:gdrv0"   
> __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, 
> expected=0, futex_word=0x555555ad60c0) at futex-internal.c:57
>   16   Thread 0x7fff8b7fe6c0 (LWP 8713) "Digikam::ScanCo" 
> __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, 
> expected=0, futex_word=0x555555b55de0) at futex-internal.c:57
>   17   Thread 0x7fff8affd6c0 (LWP 8714) "digikam"         pselect64_syscall 
> (sigmask=<optimized out>, timeout=<optimized out>, exceptfds=0x0, 
> writefds=0x0, readfds=0x7fff8aff4290, nfds=30) at 
> ../sysdeps/unix/sysv/linux/pselect.c:34
>   19   Thread 0x7fffcb7fe6c0 (LWP 8718) "Digikam::Parkin" 
> __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, 
> expected=0, futex_word=0x555555d149e4) at futex-internal.c:57
>   21   Thread 0x7fff8a7fc6c0 (LWP 8722) "sandbox_ipc_thr" 0x00007ffff371437f 
> in __GI___poll (fds=0x7fff8a7fb1f0, nfds=2, timeout=-1) at 
> ../sysdeps/unix/sysv/linux/poll.c:29
>   22   Thread 0x7fff7bfff6c0 (LWP 8728) "digikam"         0x00007ffff36eb0f7 
> in __GI___wait4 (pid=8725, stat_loc=0x7fff7bffe36c, options=0, usage=0x0) at 
> ../sysdeps/unix/sysv/linux/wait4.c:30
>   23   Thread 0x7fff7b7fe6c0 (LWP 8729) "ThreadPoolServi" 0x00007ffff3721356 
> in epoll_wait (epfd=52, events=events@entry=0x7fff68002240, maxevents=32, 
> timeout=timeout@entry=2100000) at ../sysdeps/unix/sysv/linux/epoll_wait.c:30
>   24   Thread 0x7fff7affd6c0 (LWP 8730) "ThreadPoolForeg" 
> __futex_abstimed_wait_common64 (private=0, cancel=true, 
> abstime=0x7fff7affc0d0, op=137, expected=0, futex_word=0x7fff7affc2a8) at 
> futex-internal.c:57
>   25   Thread 0x7fff7a7fc6c0 (LWP 8731) "Chrome_IOThread" 0x00007ffff3721356 
> in epoll_wait (epfd=53, events=events@entry=0x7fff60002220, maxevents=32, 
> timeout=timeout@entry=-1) at ../sysdeps/unix/sysv/linux/epoll_wait.c:30
>   27   Thread 0x7fff797fa6c0 (LWP 8733) "ThreadPoolForeg" 
> __futex_abstimed_wait_common64 (private=0, cancel=true, 
> abstime=0x7fff797f90d0, op=137, expected=0, futex_word=0x7fff797f92a8) at 
> futex-internal.c:57
>   29   Thread 0x7fff5bfff6c0 (LWP 8735) "inotify_reader"  0x00007ffff3716b5c 
> in __GI___select (nfds=63, readfds=0x7fff5bffe300, writefds=0x0, 
> exceptfds=0x0, timeout=0x0) at ../sysdeps/unix/sysv/linux/select.c:69
>   31   Thread 0x7fff5affd6c0 (LWP 8737) "CompositorTileW" 
> __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, 
> expected=0, futex_word=0x555555c8adfc) at futex-internal.c:57
>   32   Thread 0x7fff5a7fc6c0 (LWP 8738) "Chrome_InProcGp" 
> __futex_abstimed_wait_common64 (private=0, cancel=true, 
> abstime=0x7fff5a7fafe0, op=137, expected=0, futex_word=0x7fff5a7fb1b8) at 
> futex-internal.c:57
>   33   Thread 0x7fff59ffb6c0 (LWP 8739) "VideoCaptureThr" 
> __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, 
> expected=0, futex_word=0x7fff59ffa198) at futex-internal.c:57
>   34   Thread 0x7fff597fa6c0 (LWP 8740) "Chrome_ChildIOT" 0x00007ffff3721356 
> in epoll_wait (epfd=65, events=events@entry=0x7fff40002240, maxevents=32, 
> timeout=timeout@entry=-1) at ../sysdeps/unix/sysv/linux/epoll_wait.c:30
>   37   Thread 0x7fff58ff96c0 (LWP 8743) "VizCompositorTh" 
> __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, 
> expected=0, futex_word=0x7fff58ff8198) at futex-internal.c:57
>   38   Thread 0x7fff3bfff6c0 (LWP 8744) "digikam:gdrv0"   
> __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, 
> expected=0, futex_word=0x7fff3c027fe0) at futex-internal.c:57
>   47   Thread 0x7fff16ffd6c0 (LWP 8753) "NetworkService"  0x00007ffff3721356 
> in epoll_wait (epfd=86, events=events@entry=0x7fff0c002220, maxevents=32, 
> timeout=timeout@entry=1195000) at ../sysdeps/unix/sysv/linux/epoll_wait.c:30
>   48   Thread 0x7fff167fc6c0 (LWP 8754) "CacheThread_Blo" 0x00007ffff3721356 
> in epoll_wait (epfd=98, events=events@entry=0x7fff00002240, maxevents=32, 
> timeout=timeout@entry=30000) at ../sysdeps/unix/sysv/linux/epoll_wait.c:30
>   49   Thread 0x7fff15ffb6c0 (LWP 8755) "ThreadPoolSingl" 
> __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, 
> expected=0, futex_word=0x7fff15ffa288) at futex-internal.c:57
>   60   Thread 0x7ffefd7fa6c0 (LWP 8797) "Thread (pooled)" 0x00007ffff18c8110 
> in ?? () from /usr/lib/liblcms2.so.2
>   63   Thread 0x7ffedb7fe6c0 (LWP 8800) "digikam:gdrv0"   
> __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, 
> expected=0, futex_word=0x7fff3c105d80) at futex-internal.c:57
>   64   Thread 0x7ffefcff96c0 (LWP 8801) "digikam:gdrv0"   
> __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, 
> expected=0, futex_word=0x7fff3c1fd110) at futex-internal.c:57
>   65   Thread 0x7ffefdffb6c0 (LWP 8802) "MemoryInfra"     
> __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, 
> expected=0, futex_word=0x7ffefdffa198) at futex-internal.c:57
>   66   Thread 0x7ffefe7fc6c0 (LWP 8803) "ThreadPoolSingl" 
> __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, 
> expected=0, futex_word=0x7ffefe7fb288) at futex-internal.c:57
>   95   Thread 0x7fff79ffb6c0 (LWP 9174) "Thread (pooled)" 0x00007ffff371437f 
> in __GI___poll (fds=0x7fff5c005bb0, nfds=1, timeout=-1) at 
> ../sysdeps/unix/sysv/linux/poll.c:29
>   100  Thread 0x7ffefeffd6c0 (LWP 9180) "Thread (pooled)" 
> __pthread_kill_implementation (threadid=<optimized out>, signo=signo@entry=6, 
> no_tid=no_tid@entry=0) at pthread_kill.c:44
>   137  Thread 0x7fff17fff6c0 (LWP 9220) "Thread (pooled)" 
> __pthread_kill_implementation (threadid=<optimized out>, signo=signo@entry=6, 
> no_tid=no_tid@entry=0) at pthread_kill.c:44
>   138  Thread 0x7fff3a7fc6c0 (LWP 9221) "Thread (pooled)" 
> __pthread_kill_implementation (threadid=<optimized out>, signo=signo@entry=6, 
> no_tid=no_tid@entry=0) at pthread_kill.c:44
> * 139  Thread 0x7fff3affd6c0 (LWP 9222) "Thread (pooled)" 
> __pthread_kill_implementation (threadid=<optimized out>, signo=signo@entry=6, 
> no_tid=no_tid@entry=0) at pthread_kill.c:44
>   140  Thread 0x7fff177fe6c0 (LWP 9223) "Thread (pooled)" 
> __pthread_kill_implementation (threadid=<optimized out>, signo=signo@entry=6, 
> no_tid=no_tid@entry=0) at pthread_kill.c:44
>   141  Thread 0x7fff3b6fd6c0 (LWP 9224) "Thread (pooled)" 
> __pthread_kill_implementation (threadid=<optimized out>, signo=signo@entry=6, 
> no_tid=no_tid@entry=0) at pthread_kill.c:44
>   142  Thread 0x7fff391636c0 (LWP 9226) "Thread (pooled)" 
> __pthread_kill_implementation (threadid=<optimized out>, signo=signo@entry=6, 
> no_tid=no_tid@entry=0) at pthread_kill.c:44
>   143  Thread 0x7fff395646c0 (LWP 9225) "Thread (pooled)" 
> __pthread_kill_implementation (threadid=<optimized out>, signo=signo@entry=6, 
> no_tid=no_tid@entry=0) at pthread_kill.c:44
> (gdb)

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