.
Thread 3 (Thread 0x7f66f1594200 (LWP 4130)):
#0  0x00007f66eef540b4 in __GI___libc_read (fd=3, buf=0x7fffbb9c3290, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:27
        resultvar = 0
        sc_cancel_oldtype = 0
        sc_ret = <optimized out>
        sc_ret = <optimized out>
        nbytes = 16
        resultvar = <optimized out>
        resultvar = <optimized out>
        __arg2 = <optimized out>
        _a3 = <optimized out>
        resultvar = <optimized out>
        resultvar = <optimized out>
        __arg2 = <optimized out>
        _a3 = <optimized out>
        fd = 3
        __arg3 = <optimized out>
        __arg3 = <optimized out>
        buf = 0x7fffbb9c3290
        _a1 = <optimized out>
        _a1 = <optimized out>
        sc_ret = <optimized out>
        __arg1 = <optimized out>
        _a2 = <optimized out>
        sc_cancel_oldtype = <optimized out>
        __arg1 = <optimized out>
        _a2 = <optimized out>
        sc_ret = <optimized out>
        resultvar = <optimized out>
        resultvar = <optimized out>
        __arg3 = <optimized out>
        __arg2 = <optimized out>
        __arg1 = <optimized out>
        _a3 = <optimized out>
        _a2 = <optimized out>
        _a1 = <optimized out>
        sc_cancel_oldtype = <optimized out>
        resultvar = <optimized out>
        resultvar = <optimized out>
        __arg3 = <optimized out>
        __arg2 = <optimized out>
        __arg1 = <optimized out>
        _a3 = <optimized out>
        _a2 = <optimized out>
        _a1 = <optimized out>
#1  0x00007f66eb700870 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#2  0x00007f66eb6bbdb7 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#3  0x00007f66eb6bc270 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#4  0x00007f66eb6bc3dc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#5  0x00007f66efc4255b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
No symbol table info available.
#6  0x00007f66efbe767a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
No symbol table info available.
#7  0x00007f66efbf06c4 in QCoreApplication::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
No symbol table info available.
#8  0x00005555885dd80c in ?? ()
No symbol table info available.
#9  0x00007f66eee65b97 in __libc_start_main (main=0x5555885dd560, argc=1, argv=0x7fffbb9c3808, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffbb9c37f8) at ../csu/libc-start.c:310
        self = <optimized out>
        __self = <optimized out>
        result = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0, -2051388643419649348, 93825848433232, 140736340965376, 0, 0, -5270224088706348356, -5192986915924768068}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x7f66f13c4733 <_dl_init+259>, 0x7f66f13a7798}, data = {prev = 0x0, cleanup = 0x0, canceltype = -247707853}}}
        not_first_call = <optimized out>
#10 0x00005555885dda7a in _start ()
No symbol table info available.
.
Thread 2 (Thread 0x7f66e6c0e700 (LWP 4141)):
#0  0x00007f66eef58bf9 in __GI___poll (fds=0x7f66e0003ce0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
        resultvar = 1
        sc_cancel_oldtype = 0
        sc_ret = <optimized out>
#1  0x00007f66eb6bc2c9 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#2  0x00007f66eb6bc3dc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#3  0x00007f66efc4255b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
No symbol table info available.
#4  0x00007f66efbe767a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
No symbol table info available.
#5  0x00007f66efa0628a in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
No symbol table info available.
#6  0x00007f66f0e56d45 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
No symbol table info available.
#7  0x00007f66efa0b1cd in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
No symbol table info available.
#8  0x00007f66edf8b6db in start_thread (arg=0x7f66e6c0e700) at pthread_create.c:463
        pd = 0x7f66e6c0e700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140079934793472, 5270073741522733756, 140079934791424, 0, 140080107527520, 140736340963248, -5192969619923301700, -5192989207930893636}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
#9  0x00007f66eef6588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
No locals.
.
Thread 1 (Thread 0x7f66e620c700 (LWP 10560)):
#0  __GI_raise (sig=<optimized out>) at ../sysdeps/unix/sysv/linux/raise.c:51
        set = {__val = {0 <repeats 16 times>}}
        pid = <optimized out>
        tid = <optimized out>
        ret = <optimized out>
#1  0x00007f66f07cc7f9 in KCrash::defaultCrashHandler(int) () from /usr/lib/x86_64-linux-gnu/libKF5Crash.so.5
No symbol table info available.
#2  <signal handler called>
No locals.
#3  0x00007f66ecc3f097 in mdb_midl_xmerge () from /usr/lib/x86_64-linux-gnu/liblmdb.so.0
No symbol table info available.
#4  0x00007f66ecc3670c in ?? () from /usr/lib/x86_64-linux-gnu/liblmdb.so.0
No symbol table info available.
#5  0x00007f66ecc36a79 in ?? () from /usr/lib/x86_64-linux-gnu/liblmdb.so.0
No symbol table info available.
#6  0x00007f66ecc3873f in ?? () from /usr/lib/x86_64-linux-gnu/liblmdb.so.0
No symbol table info available.
#7  0x00007f66ecc3b992 in mdb_cursor_put () from /usr/lib/x86_64-linux-gnu/liblmdb.so.0
No symbol table info available.
#8  0x00007f66ecc3dab4 in mdb_txn_commit () from /usr/lib/x86_64-linux-gnu/liblmdb.so.0
No symbol table info available.
#9  0x00007f66f035c991 in Baloo::Transaction::commit() () from /usr/lib/x86_64-linux-gnu/libKF5BalooEngine.so.5
No symbol table info available.
#10 0x00005555885e5aed in ?? ()
No symbol table info available.
#11 0x00007f66efa08302 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
No symbol table info available.
#12 0x00007f66efa0b1cd in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
No symbol table info available.
#13 0x00007f66edf8b6db in start_thread (arg=0x7f66e620c700) at pthread_create.c:463
        pd = 0x7f66e620c700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140079924299520, 5270073741522733756, 140079924297472, 0, 93825881266640, 140736340963104, -5192970997534061892, -5192989207930893636}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
#14 0x00007f66eef6588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
No locals.