Here is some backtrace of digikam crashing after trying to import photos from camera, 
Application: digiKam (digikam), signal: Segmentation fault

[KCrash Handler]
#4  __strlen_avx2 () at ../sysdeps/x86_64/multiarch/strlen-avx2.S:74
#5  0x00007f50de2a8603 in __GI___strdup (s=0x0) at ./string/strdup.c:41
#6  0x00007f50e1c66820 in gp_port_set_info (port=0x7f4fc0001c00, info=info@entry=0x7f4fd37ec860) at gphoto2-port.c:146
#7  0x00007f50e0f8323d in gp_camera_set_port_info (camera=0x7f4fc0004760, info=0x7f4fd37ec860) at gphoto2-camera.c:421
#8  0x00007f50e196ae23 in  () at /usr/lib/digikam/libdigikamgui.so.8.1.0
#9  0x00007f50e195f921 in Digikam::CameraController::executeCommand(Digikam::CameraCommand*) () at /usr/lib/digikam/libdigikamgui.so.8.1.0
#10 0x00007f50e1963164 in Digikam::CameraController::run() () at /usr/lib/digikam/libdigikamgui.so.8.1.0
#11 0x00007f50deaccca1 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007f50de294b43 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:442
#13 0x00007f50de326a00 in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:81

Thread 29 (Thread 0x7f4fd27fc640 (LWP 282576) "ThreadPoolSingl"):
#1  __futex_abstimed_wait_common (cancel=true, private=0, abstime=0x0, clockid=0, expected=0, futex_word=0x7f4fd27ea988) at ./nptl/futex-internal.c:87
#2  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x7f4fd27ea988, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at ./nptl/futex-internal.c:139
#3  0x00007f50de293ac1 in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x7f4fd27ea938, cond=0x7f4fd27ea960) at ./nptl/pthread_cond_wait.c:503
#4  ___pthread_cond_wait (cond=0x7f4fd27ea960, mutex=0x7f4fd27ea938) at ./nptl/pthread_cond_wait.c:627
#5  0x00007f50d356a67b in  () at /lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f4fd27ea860 in  ()
#7  0x00007f4fd27ea8c0 in  ()
#8  0x00007f50d7f17d70 in  () at /lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x000055b28184abe0 in  ()
#10 0x0000000000000000 in  ()

Thread 28 (Thread 0x7f4fd17fa640 (LWP 282575) "MemoryInfra"):
#1  __futex_abstimed_wait_common (cancel=true, private=0, abstime=0x0, clockid=0, expected=0, futex_word=0x7f4fd17e8878) at ./nptl/futex-internal.c:87
#2  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x7f4fd17e8878, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at ./nptl/futex-internal.c:139
#3  0x00007f50de293ac1 in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x7f4fd17e8828, cond=0x7f4fd17e8850) at ./nptl/pthread_cond_wait.c:503
#4  ___pthread_cond_wait (cond=0x7f4fd17e8850, mutex=0x7f4fd17e8828) at ./nptl/pthread_cond_wait.c:627
#5  0x00007f50d356a67b in  () at /lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x0000000000000000 in  ()

Thread 27 (Thread 0x7f4ff17fa640 (LWP 282551) "ThreadPoolSingl"):
#1  __futex_abstimed_wait_common (cancel=true, private=0, abstime=0x0, clockid=0, expected=0, futex_word=0x7f4ff17e8988) at ./nptl/futex-internal.c:87
#2  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x7f4ff17e8988, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at ./nptl/futex-internal.c:139
#3  0x00007f50de293ac1 in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x7f4ff17e8938, cond=0x7f4ff17e8960) at ./nptl/pthread_cond_wait.c:503
#4  ___pthread_cond_wait (cond=0x7f4ff17e8960, mutex=0x7f4ff17e8938) at ./nptl/pthread_cond_wait.c:627
#5  0x00007f50d356a67b in  () at /lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x0000000000000000 in  ()

Thread 26 (Thread 0x7f4ff1ffb640 (LWP 282550) "CacheThread_Blo"):
#1  __GI___lll_lock_wait_private (futex=0x7f50de41ba60 <_IO_stdfile_2_lock>) at ./nptl/lowlevellock.c:34
#2  0x00007f50de277845 in buffered_vfprintf (s=0x7f50de41a6a0 <_IO_2_1_stderr_>, format=format@entry=0x7f50c74e8c85 "[%s] %s\n", args=args@entry=0x7f4ff1fe9200, mode_flags=mode_flags@entry=2) at ./stdio-common/vfprintf-internal.c:2265
#3  0x00007f50de2766de in __vfprintf_internal (s=<optimized out>, format=0x7f50c74e8c85 "[%s] %s\n", ap=ap@entry=0x7f4ff1fe9200, mode_flags=2) at ./stdio-common/vfprintf-internal.c:1236
#4  0x00007f50de334ec3 in ___fprintf_chk (fp=<optimized out>, flag=<optimized out>, format=<optimized out>) at ./debug/fprintf_chk.c:33
#5  0x00007f50c74cd37e in event_logv_ () at /lib/x86_64-linux-gnu/libevent-2.1.so.7
#6  0x00007f50c74cd549 in event_warn () at /lib/x86_64-linux-gnu/libevent-2.1.so.7
#7  0x00007f50c74d223c in  () at /lib/x86_64-linux-gnu/libevent-2.1.so.7
#8  0x00007f50c74c95d1 in event_base_loop () at /lib/x86_64-linux-gnu/libevent-2.1.so.7
#9  0x00007f50d357c624 in  () at /lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x0001000000000008 in  ()
#11 0x00007f4ff1fe9908 in  ()
#12 0x00007f4ff1fe99c0 in  ()
#13 0x0000000001c78437 in  ()
#14 0x000000000000001d in  ()
#15 0x00000000000d02f7 in  ()
#16 0x000055b285fbb288 in  ()
#17 0x000055b285fbb270 in  ()
#18 0x7fffffffffffffff in  ()
#19 0x0000000000000001 in  ()
#20 0x7fffffffffffffff in  ()
#21 0x00007f5018038410 in  ()
#22 0x00007f4ff1fe9980 in  ()
#23 0x00007f50d353fb6c in  () at /lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#24 0x00007f50d879af08 in  () at /lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#25 0x00007f4ff1fe9a50 in  ()
#26 0x00007f4ff1fe99c0 in  ()
#27 0x00007f4ff1fe99c8 in  ()
#28 0x00007f4ff1fe9a30 in  ()
#29 0x00007f50d3517ce6 in  () at /lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#30 0x0000000000000000 in  ()

Thread 25 (Thread 0x7f4ff27fc640 (LWP 282549) "NetworkService"):
#1  __GI___lll_lock_wait_private (futex=0x7f50de41ba60 <_IO_stdfile_2_lock>) at ./nptl/lowlevellock.c:34
#2  0x00007f50de277845 in buffered_vfprintf (s=0x7f50de41a6a0 <_IO_2_1_stderr_>, format=format@entry=0x7f50c74e8c85 "[%s] %s\n", args=args@entry=0x7f4ff27ea200, mode_flags=mode_flags@entry=2) at ./stdio-common/vfprintf-internal.c:2265
#3  0x00007f50de2766de in __vfprintf_internal (s=<optimized out>, format=0x7f50c74e8c85 "[%s] %s\n", ap=ap@entry=0x7f4ff27ea200, mode_flags=2) at ./stdio-common/vfprintf-internal.c:1236
#4  0x00007f50de334ec3 in ___fprintf_chk (fp=<optimized out>, flag=<optimized out>, format=<optimized out>) at ./debug/fprintf_chk.c:33
#5  0x00007f50c74cd37e in event_logv_ () at /lib/x86_64-linux-gnu/libevent-2.1.so.7
#6  0x00007f50c74cd549 in event_warn () at /lib/x86_64-linux-gnu/libevent-2.1.so.7
#7  0x00007f50c74d223c in  () at /lib/x86_64-linux-gnu/libevent-2.1.so.7
#8  0x00007f50c74c95d1 in event_base_loop () at /lib/x86_64-linux-gnu/libevent-2.1.so.7
#9  0x00007f50d357c624 in  () at /lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x0001000000000008 in  ()
#11 0x00007f4ff27ea908 in  ()
#12 0x00007f4ff27ea9c0 in  ()
#13 0x0000000044947db9 in  ()
#14 0x000000000000047e in  ()
#15 0x000000000008e239 in  ()
#16 0x000055b285fc52a8 in  ()
#17 0x000055b285fc5290 in  ()
#18 0x7fffffffffffffff in  ()
#19 0x0000000000000001 in  ()
#20 0x7fffffffffffffff in  ()
#21 0x00007f50d87b8528 in  () at /lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#22 0x00007f4ff27ea980 in  ()
#23 0x00007f50d353fb6c in  () at /lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#24 0x00007f50d87b8480 in  () at /lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#25 0x00007f4ff27eaa50 in  ()
#26 0x00007f4ff27ea9c0 in  ()
#27 0x00007f4ff27ea9c8 in  ()
#28 0x00007f4ff27eaa30 in  ()
#29 0x00007f50d3517ce6 in  () at /lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#30 0x0000000000000000 in  ()

Thread 24 (Thread 0x7f4ff2ffd640 (LWP 282548) "Thread (pooled)"):
#1  __futex_abstimed_wait_common (cancel=true, private=544, abstime=0x7f4ff2feb9f0, clockid=0, expected=0, futex_word=0x55b285faaaf0) at ./nptl/futex-internal.c:87
#2  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x55b285faaaf0, expected=expected@entry=0, clockid=clockid@entry=1, abstime=abstime@entry=0x7f4ff2feb9f0, private=private@entry=0) at ./nptl/futex-internal.c:139
#3  0x00007f50de293f1b in __pthread_cond_wait_common (abstime=0x7f4ff2feb9f0, clockid=1, mutex=0x55b285faaaa0, cond=0x55b285faaac8) at ./nptl/pthread_cond_wait.c:503
#4  ___pthread_cond_timedwait64 (cond=0x55b285faaac8, mutex=0x55b285faaaa0, abstime=0x7f4ff2feb9f0) at ./nptl/pthread_cond_wait.c:652
#5  0x00007f50dead2c7c in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f50dead0145 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f50deaccca1 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f50de294b43 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:442
#9  0x00007f50de326a00 in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:81

Thread 23 (Thread 0x7f4ff37fe640 (LWP 282547) "Thread (pooled)"):
#1  __futex_abstimed_wait_common (cancel=true, private=544, abstime=0x7f4ff37ec9f0, clockid=0, expected=0, futex_word=0x55b285faa460) at ./nptl/futex-internal.c:87
#2  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x55b285faa460, expected=expected@entry=0, clockid=clockid@entry=1, abstime=abstime@entry=0x7f4ff37ec9f0, private=private@entry=0) at ./nptl/futex-internal.c:139
#3  0x00007f50de293f1b in __pthread_cond_wait_common (abstime=0x7f4ff37ec9f0, clockid=1, mutex=0x55b285faa410, cond=0x55b285faa438) at ./nptl/pthread_cond_wait.c:503
#4  ___pthread_cond_timedwait64 (cond=0x55b285faa438, mutex=0x55b285faa410, abstime=0x7f4ff37ec9f0) at ./nptl/pthread_cond_wait.c:652
#5  0x00007f50dead2c7c in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f50dead0145 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f50deaccca1 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f50de294b43 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:442
#9  0x00007f50de326a00 in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:81

Thread 22 (Thread 0x7f4ff3fff640 (LWP 282546) "Thread (pooled)"):
#1  __futex_abstimed_wait_common (cancel=true, private=544, abstime=0x7f4ff3fed9f0, clockid=0, expected=0, futex_word=0x55b285fa9e84) at ./nptl/futex-internal.c:87
#2  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x55b285fa9e84, expected=expected@entry=0, clockid=clockid@entry=1, abstime=abstime@entry=0x7f4ff3fed9f0, private=private@entry=0) at ./nptl/futex-internal.c:139
#3  0x00007f50de293f1b in __pthread_cond_wait_common (abstime=0x7f4ff3fed9f0, clockid=1, mutex=0x55b285fa9e30, cond=0x55b285fa9e58) at ./nptl/pthread_cond_wait.c:503
#4  ___pthread_cond_timedwait64 (cond=0x55b285fa9e58, mutex=0x55b285fa9e30, abstime=0x7f4ff3fed9f0) at ./nptl/pthread_cond_wait.c:652
#5  0x00007f50dead2c7c in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f50dead0145 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f50deaccca1 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f50de294b43 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:442
#9  0x00007f50de326a00 in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:81

Thread 21 (Thread 0x7f5014ff9640 (LWP 282545) "Thread (pooled)"):
#1  __futex_abstimed_wait_common (cancel=true, private=544, abstime=0x7f5014fe79f0, clockid=0, expected=0, futex_word=0x55b285f9d134) at ./nptl/futex-internal.c:87
#2  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x55b285f9d134, expected=expected@entry=0, clockid=clockid@entry=1, abstime=abstime@entry=0x7f5014fe79f0, private=private@entry=0) at ./nptl/futex-internal.c:139
#3  0x00007f50de293f1b in __pthread_cond_wait_common (abstime=0x7f5014fe79f0, clockid=1, mutex=0x55b285f9d0e0, cond=0x55b285f9d108) at ./nptl/pthread_cond_wait.c:503
#4  ___pthread_cond_timedwait64 (cond=0x55b285f9d108, mutex=0x55b285f9d0e0, abstime=0x7f5014fe79f0) at ./nptl/pthread_cond_wait.c:652
#5  0x00007f50dead2c7c in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f50dead0145 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f50deaccca1 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f50de294b43 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:442
#9  0x00007f50de326a00 in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:81

Thread 20 (Thread 0x7f50157fa640 (LWP 282544) "VizCompositorTh"):
#1  __futex_abstimed_wait_common (cancel=true, private=0, abstime=0x0, clockid=0, expected=0, futex_word=0x7f50157e8878) at ./nptl/futex-internal.c:87
#2  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x7f50157e8878, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at ./nptl/futex-internal.c:139
#3  0x00007f50de293ac1 in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x7f50157e8828, cond=0x7f50157e8850) at ./nptl/pthread_cond_wait.c:503
#4  ___pthread_cond_wait (cond=0x7f50157e8850, mutex=0x7f50157e8828) at ./nptl/pthread_cond_wait.c:627
#5  0x00007f50d356a67b in  () at /lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x0000000000000000 in  ()

Thread 19 (Thread 0x7f5015ffb640 (LWP 282543) "Chrome_ChildIOT"):
#1  ___pthread_rwlock_rdlock (rwlock=rwlock@entry=0x7f50de41ad60 <lock>) at ./nptl/pthread_rwlock_rdlock.c:26
#2  0x00007f50de23bed6 in _nl_find_domain (dirname=dirname@entry=0x7f50de3e15b0 <_nl_default_dirname> "/usr/share/locale", locale=locale@entry=0x7f5015fe9570 "en_US.UTF-8", domainname=domainname@entry=0x7f5015fe9590 "LC_MESSAGES/libc.mo", domainbinding=domainbinding@entry=0x0) at ./intl/finddomain.c:86
#3  0x00007f50de23b845 in __dcigettext (domainname=0x7f50de3d850a <_libc_intl_domainname> "libc", msgid1=msgid1@entry=0x7f50de3d895a "Bad file descriptor", msgid2=msgid2@entry=0x0, plural=plural@entry=0, n=n@entry=0, category=category@entry=5) at ./intl/dcigettext.c:702
#4  0x00007f50de23a903 in __GI___dcgettext (domainname=<optimized out>, msgid=msgid@entry=0x7f50de3d895a "Bad file descriptor", category=category@entry=5) at ./intl/dcgettext.c:47
#5  0x00007f50de2b174f in translate (loc=<optimized out>, str=0x7f50de3d895a "Bad file descriptor") at ./string/strerror_l.c:29
#6  __GI___strerror_l (errnum=9, loc=<optimized out>) at ./string/strerror_l.c:52
#7  0x00007f50c74cd536 in event_warn () at /lib/x86_64-linux-gnu/libevent-2.1.so.7
#8  0x00007f50c74d223c in  () at /lib/x86_64-linux-gnu/libevent-2.1.so.7
#9  0x00007f50c74c95d1 in event_base_loop () at /lib/x86_64-linux-gnu/libevent-2.1.so.7
#10 0x00007f50d357c624 in  () at /lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#11 0x0001000000000008 in  ()
#12 0x00007f5015fe9908 in  ()
#13 0x00007f5015fe99c0 in  ()
#14 0x00007f5015fe99c8 in  ()
#15 0x00007f5000001fc0 in  ()
#16 0x00007f50de2a51b9 in __GI___libc_malloc (bytes=139981943118160) at ./malloc/malloc.c:3329
#17 0x00007f5000001fc0 in  ()
#18 0x00007f5015fe9980 in  ()
#19 0x00007f50d353fb6c in  () at /lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#20 0x00007f5000001df0 in  ()
#21 0x00007f5015fe9a50 in  ()
#22 0x00007f5015fe99c0 in  ()
#23 0x00007f5015fe99c8 in  ()
#24 0x00007f5015fe9a30 in  ()
#25 0x00007f50d3517ce6 in  () at /lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#26 0x0000000000000000 in  ()

Thread 18 (Thread 0x7f50167fc640 (LWP 282542) "Chrome_InProcGp"):
#1  __futex_abstimed_wait_common (cancel=true, private=1, abstime=0x7f50167ea6c0, clockid=377398608, expected=0, futex_word=0x7f50167ea898) at ./nptl/futex-internal.c:87
#2  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x7f50167ea898, expected=expected@entry=0, clockid=clockid@entry=1, abstime=abstime@entry=0x7f50167ea6c0, private=private@entry=0) at ./nptl/futex-internal.c:139
#3  0x00007f50de293f1b in __pthread_cond_wait_common (abstime=0x7f50167ea6c0, clockid=1, mutex=0x7f50167ea848, cond=0x7f50167ea870) at ./nptl/pthread_cond_wait.c:503
#4  ___pthread_cond_timedwait64 (cond=0x7f50167ea870, mutex=0x7f50167ea848, abstime=0x7f50167ea6c0) at ./nptl/pthread_cond_wait.c:652
#5  0x00007f50d356a7da in  () at /lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x000000000000e965 in  ()
#7  0x00000000360c15b9 in  ()
#8  0x000000000000e947 in  ()
#9  0x00000000360ed4d9 in  ()
#10 0x00007f500000003a in  ()
#11 0x00007f50d353c9c8 in  () at /lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#12 0x0000000000000000 in  ()

Thread 17 (Thread 0x7f5016ffd640 (LWP 282541) "VideoCaptureThr"):
#1  __futex_abstimed_wait_common (cancel=true, private=0, abstime=0x0, clockid=0, expected=0, futex_word=0x7f5016feb878) at ./nptl/futex-internal.c:87
#2  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x7f5016feb878, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at ./nptl/futex-internal.c:139
#3  0x00007f50de293ac1 in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x7f5016feb828, cond=0x7f5016feb850) at ./nptl/pthread_cond_wait.c:503
#4  ___pthread_cond_wait (cond=0x7f5016feb850, mutex=0x7f5016feb828) at ./nptl/pthread_cond_wait.c:627
#5  0x00007f50d356a67b in  () at /lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x0000000000000000 in  ()

Thread 16 (Thread 0x7f50177fe640 (LWP 282540) "CompositorTileW"):
#1  __futex_abstimed_wait_common (cancel=true, private=0, abstime=0x0, clockid=0, expected=0, futex_word=0x55b281844e1c) at ./nptl/futex-internal.c:87
#2  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x55b281844e1c, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at ./nptl/futex-internal.c:139
#3  0x00007f50de293ac1 in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55b281844d58, cond=0x55b281844df0) at ./nptl/pthread_cond_wait.c:503
#4  ___pthread_cond_wait (cond=0x55b281844df0, mutex=0x55b281844d58) at ./nptl/pthread_cond_wait.c:627
#5  0x00007f50d356a67b in  () at /lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f5008000b70 in  ()
#7  0x000055b2838b5e58 in  ()
#8  0x00007f50177ecaa0 in  ()
#9  0x00007f50d35b1e84 in  () at /lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x0000000000000000 in  ()

Thread 15 (Thread 0x7f503cdbe640 (LWP 282538) "ThreadPoolForeg"):
#1  __futex_abstimed_wait_common (cancel=true, private=-749437892, abstime=0x7f503cdac7d0, clockid=0, expected=0, futex_word=0x7f503cdac9a8) at ./nptl/futex-internal.c:87
#2  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x7f503cdac9a8, expected=expected@entry=0, clockid=clockid@entry=1, abstime=abstime@entry=0x7f503cdac7d0, private=private@entry=0) at ./nptl/futex-internal.c:139
#3  0x00007f50de293f1b in __pthread_cond_wait_common (abstime=0x7f503cdac7d0, clockid=1, mutex=0x7f503cdac958, cond=0x7f503cdac980) at ./nptl/pthread_cond_wait.c:503
#4  ___pthread_cond_timedwait64 (cond=0x7f503cdac980, mutex=0x7f503cdac958, abstime=0x7f503cdac7d0) at ./nptl/pthread_cond_wait.c:652
#5  0x00007f50d356a7da in  () at /lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x000000000000e968 in  ()
#7  0x00000000361461b3 in  ()
#8  0x000000000000e947 in  ()
#9  0x00000000361461b3 in  ()
#10 0x00007f503cdac800 in  ()
#11 0x00007f50d357e692 in  () at /lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#12 0x0000000000000000 in  ()

Thread 14 (Thread 0x7f503ddc0640 (LWP 282536) "ThreadPoolForeg"):
#1  __futex_abstimed_wait_common (cancel=true, private=-749437892, abstime=0x7f503ddae7d0, clockid=0, expected=0, futex_word=0x7f503ddae9a8) at ./nptl/futex-internal.c:87
#2  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x7f503ddae9a8, expected=expected@entry=0, clockid=clockid@entry=1, abstime=abstime@entry=0x7f503ddae7d0, private=private@entry=0) at ./nptl/futex-internal.c:139
#3  0x00007f50de293f1b in __pthread_cond_wait_common (abstime=0x7f503ddae7d0, clockid=1, mutex=0x7f503ddae958, cond=0x7f503ddae980) at ./nptl/pthread_cond_wait.c:503
#4  ___pthread_cond_timedwait64 (cond=0x7f503ddae980, mutex=0x7f503ddae958, abstime=0x7f503ddae7d0) at ./nptl/pthread_cond_wait.c:652
#5  0x00007f50d356a7da in  () at /lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x000000000000e968 in  ()
#7  0x00000000360ba351 in  ()
#8  0x000000000000e947 in  ()
#9  0x00000000360ba351 in  ()
#10 0x00007f503ddaea40 in  ()
#11 0x00007f50d35afb80 in  () at /lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#12 0x0000000000000000 in  ()

Thread 13 (Thread 0x7f503e5c1640 (LWP 282535) "Chrome_IOThread"):
#1  __GI___lll_lock_wait_private (futex=0x7f50de41ba60 <_IO_stdfile_2_lock>) at ./nptl/lowlevellock.c:34
#2  0x00007f50de277845 in buffered_vfprintf (s=0x7f50de41a6a0 <_IO_2_1_stderr_>, format=format@entry=0x7f50c74e8c85 "[%s] %s\n", args=args@entry=0x7f503e5af1c0, mode_flags=mode_flags@entry=2) at ./stdio-common/vfprintf-internal.c:2265
#3  0x00007f50de2766de in __vfprintf_internal (s=<optimized out>, format=0x7f50c74e8c85 "[%s] %s\n", ap=ap@entry=0x7f503e5af1c0, mode_flags=2) at ./stdio-common/vfprintf-internal.c:1236
#4  0x00007f50de334ec3 in ___fprintf_chk (fp=<optimized out>, flag=<optimized out>, format=<optimized out>) at ./debug/fprintf_chk.c:33
#5  0x00007f50c74cd37e in event_logv_ () at /lib/x86_64-linux-gnu/libevent-2.1.so.7
#6  0x00007f50c74cd549 in event_warn () at /lib/x86_64-linux-gnu/libevent-2.1.so.7
#7  0x00007f50c74d223c in  () at /lib/x86_64-linux-gnu/libevent-2.1.so.7
#8  0x00007f50c74c95d1 in event_base_loop () at /lib/x86_64-linux-gnu/libevent-2.1.so.7
#9  0x00007f50d357c767 in  () at /lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x0001000000000008 in  ()
#11 0x00007f503e5af8c8 in  ()
#12 0x00007f503e5af980 in  ()
#13 0x00007f503e5af988 in  ()
#14 0x00007f503e5afa08 in  ()
#15 0x00007f50de2a51b9 in __GI___libc_malloc (bytes=139982620260624) at ./malloc/malloc.c:3329
#16 0x00007f503e5afa08 in  ()
#17 0x00007f503e5af940 in  ()
#18 0x00007f50d353fb6c in  () at /lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#19 0x000055b2815b9eb0 in  ()
#20 0x00007f503e5afa50 in  ()
#21 0x00007f503e5af980 in  ()
#22 0x00007f503e5af988 in  ()
#23 0x00007f503e5af9f0 in  ()
#24 0x00007f50d3517ce6 in  () at /lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#25 0x0000000000000000 in  ()

Thread 12 (Thread 0x7f50a9f2e640 (LWP 282533) "ThreadPoolServi"):
#1  0x00007f50de277845 in buffered_vfprintf (s=0x7f50de41a6a0 <_IO_2_1_stderr_>, format=format@entry=0x7f50c74e8c85 "[%s] %s\n", args=args@entry=0x7f50a9f1c1e0, mode_flags=mode_flags@entry=2) at ./stdio-common/vfprintf-internal.c:2265
#2  0x00007f50de2766de in __vfprintf_internal (s=<optimized out>, format=0x7f50c74e8c85 "[%s] %s\n", ap=ap@entry=0x7f50a9f1c1e0, mode_flags=2) at ./stdio-common/vfprintf-internal.c:1236
#3  0x00007f50de334ec3 in ___fprintf_chk (fp=<optimized out>, flag=<optimized out>, format=<optimized out>) at ./debug/fprintf_chk.c:33
#4  0x00007f50c74cd37e in event_logv_ () at /lib/x86_64-linux-gnu/libevent-2.1.so.7
#5  0x00007f50c74cd549 in event_warn () at /lib/x86_64-linux-gnu/libevent-2.1.so.7
#6  0x00007f50c74d223c in  () at /lib/x86_64-linux-gnu/libevent-2.1.so.7
#7  0x00007f50c74c95d1 in event_base_loop () at /lib/x86_64-linux-gnu/libevent-2.1.so.7
#8  0x00007f50d357c624 in  () at /lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x0001000000000008 in  ()
#10 0x00007f50a9f1c8e8 in  ()
#11 0x00007f50a9f1c930 in  ()
#12 0x00000000d00396dd in  ()
#13 0x0000000000000da1 in  ()
#14 0x00000000000dac9d in  ()
#15 0x000055b28176c5c0 in  ()
#16 0x000055b281602070 in  ()
#17 0x7fffffffffffffff in  ()
#18 0x0000000000000001 in  ()
#19 0x7fffffffffffffff in  ()
#20 0x000055b28176c5c0 in  ()
#21 0x00007f50a9f1c960 in  ()
#22 0x00007f50d353fb6c in  () at /lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#23 0x000055b2816555f0 in  ()
#24 0x00007f50a9f1ca50 in  ()
#25 0x00007f50a9f1c9a0 in  ()
#26 0x00007f50a9f1c9a8 in  ()
#27 0x00007f50a9f1ca10 in  ()
#28 0x00007f50d3517ce6 in  () at /lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#29 0x0000000000000000 in  ()

Thread 11 (Thread 0x7f503fb5b640 (LWP 282516) "Digikam::ExifTo"):
#1  __GI___libc_read (fd=33, buf=0x7f503fb498b0, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:24
#2  0x00007f50d0121134 in g_main_context_check () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f50d017619d in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f50d011e3e3 in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f50ded1312e in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f50decb875b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f50deacbaf2 in QThread::exec() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f50e0562869 in Digikam::ExifToolThread::run() () at /usr/lib/digikam/libdigikamcore.so.8.1.0
#9  0x00007f50deaccca1 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f50de294b43 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:442
#11 0x00007f50de326a00 in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:81

Thread 10 (Thread 0x7f504035c640 (LWP 282515) "Qt bearer threa"):
#1  __libc_recv (fd=6, buf=0x7f5038011ab8, len=8192, flags=0) at ../sysdeps/unix/sysv/linux/recv.c:23
#2  0x00007f50da53850d in  () at /lib/x86_64-linux-gnu/libQt5Network.so.5
#3  0x00007f50da528244 in  () at /lib/x86_64-linux-gnu/libQt5Network.so.5
#4  0x00007f50da5294d5 in QNetworkInterface::allInterfaces() () at /lib/x86_64-linux-gnu/libQt5Network.so.5
#5  0x00007f507407889f in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/bearer/libqgenericbearer.so
#6  0x00007f50decc525b in QMetaMethod::invoke(QObject*, Qt::ConnectionType, QGenericReturnArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument) const () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f50decca126 in QMetaObject::invokeMethod(QObject*, char const*, Qt::ConnectionType, QGenericReturnArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f50da514570 in QNetworkConfigurationManagerPrivate::performAsyncConfigurationUpdate() () at /lib/x86_64-linux-gnu/libQt5Network.so.5
#9  0x00007f50da514772 in QNetworkConfigurationManagerPrivate::startPolling() () at /lib/x86_64-linux-gnu/libQt5Network.so.5
#10 0x00007f50da514e18 in QNetworkConfigurationManagerPrivate::updateConfigurations() () at /lib/x86_64-linux-gnu/libQt5Network.so.5
#11 0x00007f50dece741e in QObject::event(QEvent*) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007f50decb9e07 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007f50decbcf27 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#14 0x00007f50ded13a67 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#15 0x00007f50d0120d3b in g_main_context_dispatch () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#16 0x00007f50d0176258 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#17 0x00007f50d011e3e3 in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#18 0x00007f50ded130b8 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x00007f50decb875b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x00007f50deacbaf2 in QThread::exec() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#21 0x00007f50deaccca1 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#22 0x00007f50de294b43 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:442
#23 0x00007f50de326a00 in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:81

Thread 9 (Thread 0x7f5053fff640 (LWP 282514) "Thread (pooled)"):
#1  __futex_abstimed_wait_common (cancel=true, private=544, abstime=0x7f5053fed9f0, clockid=0, expected=0, futex_word=0x55b28162b8f4) at ./nptl/futex-internal.c:87
#2  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x55b28162b8f4, expected=expected@entry=0, clockid=clockid@entry=1, abstime=abstime@entry=0x7f5053fed9f0, private=private@entry=0) at ./nptl/futex-internal.c:139
#3  0x00007f50de293f1b in __pthread_cond_wait_common (abstime=0x7f5053fed9f0, clockid=1, mutex=0x55b28162b8a0, cond=0x55b28162b8c8) at ./nptl/pthread_cond_wait.c:503
#4  ___pthread_cond_timedwait64 (cond=0x55b28162b8c8, mutex=0x55b28162b8a0, abstime=0x7f5053fed9f0) at ./nptl/pthread_cond_wait.c:652
#5  0x00007f50dead2c7c in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f50dead0145 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f50deaccca1 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f50de294b43 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:442
#9  0x00007f50de326a00 in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:81

Thread 8 (Thread 0x7f5068fff640 (LWP 282513) "Thread (pooled)"):
#1  __futex_abstimed_wait_common (cancel=true, private=16711935, abstime=0x7f5068fed9f0, clockid=1086324736, expected=0, futex_word=0x55b281604980) at ./nptl/futex-internal.c:87
#2  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x55b281604980, expected=expected@entry=0, clockid=clockid@entry=1, abstime=abstime@entry=0x7f5068fed9f0, private=private@entry=0) at ./nptl/futex-internal.c:139
#3  0x00007f50de293f1b in __pthread_cond_wait_common (abstime=0x7f5068fed9f0, clockid=1, mutex=0x55b281604930, cond=0x55b281604958) at ./nptl/pthread_cond_wait.c:503
#4  ___pthread_cond_timedwait64 (cond=0x55b281604958, mutex=0x55b281604930, abstime=0x7f5068fed9f0) at ./nptl/pthread_cond_wait.c:652
#5  0x00007f50dead2c7c in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f50dead0145 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f50deaccca1 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f50de294b43 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:442
#9  0x00007f50de326a00 in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:81

Thread 7 (Thread 0x7f5074b6c640 (LWP 282512) "Thread (pooled)"):
#1  __futex_abstimed_wait_common (cancel=true, private=544, abstime=0x7f5074b5a9f0, clockid=0, expected=0, futex_word=0x7f5070053104) at ./nptl/futex-internal.c:87
#2  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x7f5070053104, expected=expected@entry=0, clockid=clockid@entry=1, abstime=abstime@entry=0x7f5074b5a9f0, private=private@entry=0) at ./nptl/futex-internal.c:139
#3  0x00007f50de293f1b in __pthread_cond_wait_common (abstime=0x7f5074b5a9f0, clockid=1, mutex=0x7f50700530b0, cond=0x7f50700530d8) at ./nptl/pthread_cond_wait.c:503
#4  ___pthread_cond_timedwait64 (cond=0x7f50700530d8, mutex=0x7f50700530b0, abstime=0x7f5074b5a9f0) at ./nptl/pthread_cond_wait.c:652
#5  0x00007f50dead2c7c in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f50dead0145 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f50deaccca1 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f50de294b43 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:442
#9  0x00007f50de326a00 in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:81

Thread 6 (Thread 0x7f5075bfd640 (LWP 282511) "Thread (pooled)"):
#1  __futex_abstimed_wait_common (cancel=true, private=400, abstime=0x7f5075beb9f0, clockid=112, expected=0, futex_word=0x55b281609b14) at ./nptl/futex-internal.c:87
#2  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x55b281609b14, expected=expected@entry=0, clockid=clockid@entry=1, abstime=abstime@entry=0x7f5075beb9f0, private=private@entry=0) at ./nptl/futex-internal.c:139
#3  0x00007f50de293f1b in __pthread_cond_wait_common (abstime=0x7f5075beb9f0, clockid=1, mutex=0x55b281609ac0, cond=0x55b281609ae8) at ./nptl/pthread_cond_wait.c:503
#4  ___pthread_cond_timedwait64 (cond=0x55b281609ae8, mutex=0x55b281609ac0, abstime=0x7f5075beb9f0) at ./nptl/pthread_cond_wait.c:652
#5  0x00007f50dead2c7c in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f50dead0145 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f50deaccca1 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f50de294b43 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:442
#9  0x00007f50de326a00 in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:81

Thread 5 (Thread 0x7f50763fe640 (LWP 282509) "digikam"):
#1  __pselect (nfds=6, readfds=0x7f50763e4980, writefds=0x0, exceptfds=0x0, timeout=<optimized out>, sigmask=<optimized out>) at ../sysdeps/unix/sysv/linux/pselect.c:56
#2  0x00007f50c6a3f03d in  () at /lib/x86_64-linux-gnu/libusbmuxd-2.0.so.6
#3  0x00007f50c6a3fd88 in  () at /lib/x86_64-linux-gnu/libusbmuxd-2.0.so.6
#4  0x00007f50de294b43 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:442
#5  0x00007f50de326a00 in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:81

Thread 4 (Thread 0x7f5076bff640 (LWP 282508) "Digikam::ScanCo"):
#1  0x00007f50de2e676c in __GI___readdir64 (dirp=0x7f505c25ea50) at ../sysdeps/unix/sysv/linux/readdir64.c:51
#2  0x00007f50dec4ad1a in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007f50debd7e7d in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f50debd874f in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f50debd8ed0 in QDirIterator::QDirIterator(QString const&, QStringList const&, QFlags<QDir::Filter>, QFlags<QDirIterator::IteratorFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f50debd215c in QDir::entryList(QStringList const&, QFlags<QDir::Filter>, QFlags<QDir::SortFlag>) const () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f50debd2440 in QDir::entryList(QFlags<QDir::Filter>, QFlags<QDir::SortFlag>) const () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f50e107da19 in Digikam::CollectionScanner::scanForStaleAlbums(QList<int> const&) () at /usr/lib/digikam/libdigikamdatabase.so.8.1.0
#9  0x00007f50e107e42f in Digikam::CollectionScanner::scanForStaleAlbums(QList<Digikam::CollectionLocation> const&) () at /usr/lib/digikam/libdigikamdatabase.so.8.1.0
#10 0x00007f50e1081b4e in Digikam::CollectionScanner::completeScan() () at /usr/lib/digikam/libdigikamdatabase.so.8.1.0
#11 0x00007f50e16eaf95 in Digikam::ScanController::run() () at /usr/lib/digikam/libdigikamgui.so.8.1.0
#12 0x00007f50deaccca1 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007f50de294b43 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:442
#14 0x00007f50de326a00 in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:81

Thread 3 (Thread 0x7f5077fff640 (LWP 282507) "digikam:disk$0"):
#1  __futex_abstimed_wait_common (cancel=true, private=0, abstime=0x0, clockid=0, expected=0, futex_word=0x55b28135dbc8) at ./nptl/futex-internal.c:87
#2  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x55b28135dbc8, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at ./nptl/futex-internal.c:139
#3  0x00007f50de293ac1 in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55b28135db78, cond=0x55b28135dba0) at ./nptl/pthread_cond_wait.c:503
#4  ___pthread_cond_wait (cond=0x55b28135dba0, mutex=0x55b28135db78) at ./nptl/pthread_cond_wait.c:627
#5  0x00007f507c30f89d in  () at /usr/lib/x86_64-linux-gnu/dri/nouveau_dri.so
#6  0x00007f507c2bfb0b in  () at /usr/lib/x86_64-linux-gnu/dri/nouveau_dri.so
#7  0x00007f507c30f7cb in  () at /usr/lib/x86_64-linux-gnu/dri/nouveau_dri.so
#8  0x00007f50de294b43 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:442
#9  0x00007f50de326a00 in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:81

Thread 2 (Thread 0x7f507ea69640 (LWP 282506) "QDBusConnection"):
#1  __GI___libc_read (fd=6, buf=0x7f507ea578a0, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:24
#2  0x00007f50d0121134 in g_main_context_check () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f50d017619d in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f50d011e3e3 in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f50ded130b8 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f50decb875b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f50deacbaf2 in QThread::exec() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f50ddd84f0b in  () at /lib/x86_64-linux-gnu/libQt5DBus.so.5
#9  0x00007f50deaccca1 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f50de294b43 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:442
#11 0x00007f50de326a00 in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:81

Thread 1 (Thread 0x7f50bb74da80 (LWP 282496) "digikam"):
#1  0x00007f50deaccfe5 in QBasicMutex::lockInternal() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007f50deacd2f3 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007f50da512fa9 in QNetworkConfigurationManagerPrivate::disablePolling() () at /lib/x86_64-linux-gnu/libQt5Network.so.5
#4  0x00007f50da5114c8 in QNetworkConfigurationManager::~QNetworkConfigurationManager() () at /lib/x86_64-linux-gnu/libQt5Network.so.5
#5  0x00007f50da49c3de in  () at /lib/x86_64-linux-gnu/libQt5Network.so.5
#6  0x00007f50da49c4dd in  () at /lib/x86_64-linux-gnu/libQt5Network.so.5
#7  0x00007f50da4967bd in QNetworkAccessManager::~QNetworkAccessManager() () at /lib/x86_64-linux-gnu/libQt5Network.so.5
#8  0x00007f50dece4a6e in QObjectPrivate::deleteChildren() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f50decef924 in QObject::~QObject() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f50e05e5ecd in  () at /usr/lib/digikam/libdigikamcore.so.8.1.0
#11 0x00007f50de245495 in __run_exit_handlers (status=1, listp=0x7f50de419838 <__exit_funcs>, run_list_atexit=run_list_atexit@entry=true, run_dtors=run_dtors@entry=true) at ./stdlib/exit.c:113
#12 0x00007f50de245610 in __GI_exit (status=<optimized out>) at ./stdlib/exit.c:143
#13 0x00007f507f6c9e29 in  () at /lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#14 0x00007f507f6f8d67 in  () at /lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#15 0x00007f50d0120d3b in g_main_context_dispatch () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#16 0x00007f50d0176258 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#17 0x00007f50d011e3e3 in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#18 0x00007f50ded130b8 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x00007f50decb875b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x00007f50e16ec8c0 in Digikam::ScanController::completeCollectionScanCore(bool, bool, bool) () at /usr/lib/digikam/libdigikamgui.so.8.1.0
#21 0x00007f50e1894c2b in Digikam::NewItemsFinder::slotStart() () at /usr/lib/digikam/libdigikamgui.so.8.1.0
#22 0x00007f50dece741e in QObject::event(QEvent*) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#23 0x00007f50df96c713 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#24 0x00007f50decb9e3a in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#25 0x00007f50decbcf27 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#26 0x00007f50ded13a67 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#27 0x00007f50d0120d3b in g_main_context_dispatch () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#28 0x00007f50d0176258 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#29 0x00007f50d011e3e3 in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#30 0x00007f50ded130b8 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#31 0x00007f50decb875b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#32 0x00007f50decc0cf4 in QCoreApplication::exec() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#33 0x000055b27f2cc9b4 in  ()
#34 0x00007f50de229d90 in __libc_start_call_main (main=main@entry=0x55b27f2cb850, argc=argc@entry=1, argv=argv@entry=0x7ffc8df6e5a8) at ../sysdeps/nptl/libc_start_call_main.h:58
#35 0x00007f50de229e40 in __libc_start_main_impl (main=0x55b27f2cb850, argc=1, argv=0x7ffc8df6e5a8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffc8df6e598) at ../csu/libc-start.c:392
#36 0x000055b27f2cd775 in  ()
[Inferior 1 (process 282496) detached]