https://bugs.kde.org/show_bug.cgi?id=488237

--- Comment #4 from Chris <chris.cru...@gmail.com> ---
I apologize, I don't exactly know what you need here, I'm not a developer.
These are the last lines from gdm after a crash:

[New Thread 0x7fff5b4006c0 (LWP 225213)]
[New Thread 0x7fff43e006c0 (LWP 225216)]
[New Thread 0x7fff5be006c0 (LWP 225217)]
[New Thread 0x7fff5aa006c0 (LWP 225218)]
[New Thread 0x7fff416006c0 (LWP 225219)]
[Thread 0x7fff5aa006c0 (LWP 225218) exited]
[Thread 0x7fff43e006c0 (LWP 225216) exited]
[Thread 0x7fff416006c0 (LWP 225219) exited]
[Thread 0x7fff5be006c0 (LWP 225217) exited]
malloc(): unaligned tcache chunk detected
malloc(): unaligned tcache chunk detected

Thread 1 "digikam" received signal SIGABRT, Aborted.
__pthread_kill_implementation (threadid=<optimized out>, signo=signo@entry=6,
no_tid=no_tid@entry=0) at ./nptl/pthread_kill.c:44
44      ./nptl/pthread_kill.c: No such file or directory.


And the backtrace:

#0  __pthread_kill_implementation (threadid=<optimized out>,
signo=signo@entry=6, no_tid=no_tid@entry=0) at ./nptl/pthread_kill.c:44
#1  0x00007ffff42a6b6f in __pthread_kill_internal (signo=6, threadid=<optimized
out>) at ./nptl/pthread_kill.c:78
#2  0x00007ffff42584e2 in __GI_raise (sig=sig@entry=6) at
../sysdeps/posix/raise.c:26
#3  0x00007ffff42414ed in __GI_abort () at ./stdlib/abort.c:79
#4  0x00007ffff4242395 in __libc_message (fmt=fmt@entry=0x7ffff43b655e "%s\n")
at ../sysdeps/posix/libc_fatal.c:150
#5  0x00007ffff42b0455 in malloc_printerr (str=str@entry=0x7ffff43b99a8
"malloc(): unaligned tcache chunk detected") at ./malloc/malloc.c:5765
#6  0x00007ffff42b4a1c in tcache_get_n (ep=<optimized out>, tc_idx=<optimized
out>) at ./malloc/malloc.c:3176
#7  tcache_get (tc_idx=<optimized out>) at ./malloc/malloc.c:3192
#8  __GI___libc_malloc (bytes=128) at ./malloc/malloc.c:3313
#9  0x00007ffff48e66c2 in QArrayData::allocate(unsigned long, unsigned long,
unsigned long, QFlags<QArrayData::AllocationOption>) ()
    at /lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007ffff495fee3 in QString::reallocData(unsigned int, bool) () at
/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007ffff495ffdc in QString::resize(int) () at
/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007ffff729485f in  () at /usr/lib/digikam/libdigikamdatabase.so.8.3.0
#13 0x00007ffff7299fa7 in Digikam::CollectionManager::updateLocations() () at
/usr/lib/digikam/libdigikamdatabase.so.8.3.0
#14 0x00007ffff4b07bd3 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#15 0x00007ffff55529a8 in Solid::StorageAccess::accessibilityChanged(bool,
QString const&) () at /lib/x86_64-linux-gnu/libKF5Solid.so.5
#16 0x00007ffff4b07bd3 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#17 0x00007ffff55b43dd in  () at /lib/x86_64-linux-gnu/libKF5Solid.so.5
#18 0x00007ffff4b07bd3 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x00007ffff55b0159 in  () at /lib/x86_64-linux-gnu/libKF5Solid.so.5
#20 0x00007ffff4b07c32 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#21 0x00007ffff55af791 in  () at /lib/x86_64-linux-gnu/libKF5Solid.so.5
#22 0x00007ffff4b07c32 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#23 0x00007ffff4b07c32 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#24 0x00007ffff4b0b253 in QSocketNotifier::activated(QSocketDescriptor,
QSocketNotifier::Type, QSocketNotifier::QPrivateSignal) ()
    at /lib/x86_64-linux-gnu/libQt5Core.so.5
#25 0x00007ffff4b0ba95 in QSocketNotifier::event(QEvent*) () at
/lib/x86_64-linux-gnu/libQt5Core.so.5
#26 0x00007ffff5762f82 in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() at /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#27 0x00007ffff4ace0e8 in QCoreApplication::notifyInternal2(QObject*, QEvent*)
() at /lib/x86_64-linux-gnu/libQt5Core.so.5
#28 0x00007ffff4b2a345 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#29 0x00007fffeeb0de3f in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#30 0x00007fffeeb0fec7 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#31 0x00007fffeeb104e0 in g_main_context_iteration () at
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#32 0x00007ffff4b2979a in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /lib/x86_64-linux-gnu/libQt5Core.so.5
#33 0x00007ffff4acca8b in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/lib/x86_64-linux-gnu/libQt5Core.so.5
#34 0x00007ffff4ad5244 in QCoreApplication::exec() () at
/lib/x86_64-linux-gnu/libQt5Core.so.5
#35 0x000055555555a0d4 in  ()
#36 0x00007ffff4242c8a in __libc_start_call_main
(main=main@entry=0x555555558f60, argc=argc@entry=1,
argv=argv@entry=0x7fffffffdc78)
    at ../sysdeps/nptl/libc_start_call_main.h:58
#37 0x00007ffff4242d45 in __libc_start_main_impl
    (main=0x555555558f60, argc=1, argv=0x7fffffffdc78, init=<optimized out>,
fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffffffdc68)
    at ../csu/libc-start.c:360
#38 0x000055555555ace1 in  ()

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