.
Thread 4 (Thread 0x7fa21e5fb940 (LWP 1845)):
#0  0x00007fa21bb2fdad in open64 () at ../sysdeps/unix/syscall-template.S:82
No locals.
#1  0x00007fa21bac4f99 in _IO_file_open (read_write=8, posix_mode=<optimized out>, filename=<optimized out>, fp=0x2383400, prot=<optimized out>, is32not64=<optimized out>) at fileops.c:233
        fdesc = <optimized out>
        prot = 438
#2  _IO_new_file_fopen (fp=0x2383400, filename=<optimized out>, mode=<optimized out>, is32not64=<optimized out>) at fileops.c:338
        oflags = <optimized out>
        omode = <optimized out>
        read_write = 8
        i = <optimized out>
        result = 0x9
        cs = <optimized out>
        last_recognized = 0x7fa21cee6835 "b"
        __PRETTY_FUNCTION__ = "_IO_new_file_fopen"
#3  0x00007fa21bab9bd6 in __fopen_internal (filename=0x236d010 "/usr/share/unity-greeter/logo.png", mode=0x7fa21cee6834 "rb", is32=1) at ../sysdeps/wordsize-64/../../libio/iofopen.c:93
        new_f = 0x2383400
#4  0x00007fa21ced8cf2 in gdk_pixbuf_new_from_file () from /usr/lib/x86_64-linux-gnu/libgdk_pixbuf-2.0.so.0
No symbol table info available.
#5  0x000000000040d3e6 in ?? ()
No symbol table info available.
#6  0x0000000000410a95 in ?? ()
No symbol table info available.
#7  0x000000000041b9d1 in ?? ()
No symbol table info available.
#8  0x00007fa21ca4bd61 in g_object_newv () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
No symbol table info available.
#9  0x00007fa21ca4c89c in g_object_new () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
No symbol table info available.
#10 0x000000000042c3ce in ?? ()
No symbol table info available.
#11 0x00007fa21ba6c76d in __libc_start_main (main=0x40c560, argc=1, ubp_av=0x7fff88e60798, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff88e60788) at libc-start.c:226
        result = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0, 6131877344669379563, 4244864, 140735490164624, 0, 0, -6131690230357906453, -6170781714896868373}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x437d80, 0x7fff88e60798}, data = {prev = 0x0, cleanup = 0x0, canceltype = 4423040}}}
        not_first_call = <optimized out>
#12 0x000000000040c5a9 in ?? ()
No symbol table info available.
#13 0x00007fff88e60788 in ?? ()
No symbol table info available.
#14 0x000000000000001c in ?? ()
No symbol table info available.
#15 0x0000000000000001 in ?? ()
No symbol table info available.
#16 0x00007fff88e61d7c in ?? ()
No symbol table info available.
#17 0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 3 (Thread 0x7fa214ae1700 (LWP 1856)):
#0  __lll_lock_wait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:132
No locals.
#1  0x00007fa21be12080 in _L_lock_903 () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#2  0x00007fa21be11f19 in __pthread_mutex_lock (mutex=0x22a10c0) at pthread_mutex_lock.c:82
        __PRETTY_FUNCTION__ = "__pthread_mutex_lock"
        type = 36311232
#3  0x00007fa21c7c0acd in g_variant_type_info_get () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#4  0x00007fa21c7ba71e in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#5  0x00007fa21c7b56b7 in g_variant_new_dict_entry () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#6  0x00007fa21d3c60b0 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
No symbol table info available.
#7  0x00007fa21d3c694d in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
No symbol table info available.
#8  0x00007fa21d3c7d34 in g_dbus_message_new_from_blob () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
No symbol table info available.
#9  0x00007fa21d3d29e5 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
No symbol table info available.
#10 0x00007fa21d36ccae in g_simple_async_result_complete () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
No symbol table info available.
#11 0x00007fa21d36cddc in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
No symbol table info available.
#12 0x00007fa21c785bb5 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#13 0x00007fa21c785ee8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#14 0x00007fa21c7862e2 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#15 0x00007fa21d3d07b6 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
No symbol table info available.
#16 0x00007fa21c7a9985 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#17 0x00007fa21be0fe9a in start_thread (arg=0x7fa214ae1700) at pthread_create.c:308
        __res = <optimized out>
        pd = 0x7fa214ae1700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0, 6131877344669379563, 140735490162512, 140334108383680, 0, 3, -6170805975203140629, -6170782283670705173}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#18 0x00007fa21bb3d39d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
No locals.
#19 0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 2 (Thread 0x7fa20f3ee700 (LWP 1872)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:215
No locals.
#1  0x00007fa21c7c32e5 in g_cond_wait_until () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#2  0x00007fa21c75c7b1 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#3  0x00007fa21c7aa0aa in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#4  0x00007fa21c7a9985 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#5  0x00007fa21be0fe9a in start_thread (arg=0x7fa20f3ee700) at pthread_create.c:308
        __res = <optimized out>
        pd = 0x7fa20f3ee700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0, 6131877344669379563, 140735490163536, 140334017210816, 0, 3, -6170824802729153557, -6170782283670705173}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#6  0x00007fa21bb3d39d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
No locals.
#7  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 1 (Thread 0x7fa20fbef700 (LWP 1869)):
#0  0x00007fa21d3aab5a in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
No symbol table info available.
#1  0x00007fa21d3ab0ed in g_settings_backend_path_changed () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
No symbol table info available.
#2  0x00007fa20fbf45f0 in ?? () from /usr/lib/x86_64-linux-gnu/gio/modules/libdconfsettings.so
No symbol table info available.
#3  0x00007fa20fbf6636 in ?? () from /usr/lib/x86_64-linux-gnu/gio/modules/libdconfsettings.so
No symbol table info available.
#4  0x00007fa21d36ccae in g_simple_async_result_complete () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
No symbol table info available.
#5  0x00007fa21d3c240a in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
No symbol table info available.
#6  0x00007fa21d36ccae in g_simple_async_result_complete () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
No symbol table info available.
#7  0x00007fa21d36cddc in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
No symbol table info available.
#8  0x00007fa21c785bb5 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#9  0x00007fa21c785ee8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#10 0x00007fa21c785fa4 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#11 0x00007fa20fbf635d in ?? () from /usr/lib/x86_64-linux-gnu/gio/modules/libdconfsettings.so
No symbol table info available.
#12 0x00007fa21c7a9985 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#13 0x00007fa21be0fe9a in start_thread (arg=0x7fa20fbef700) at pthread_create.c:308
        __res = <optimized out>
        pd = 0x7fa20fbef700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0, 6131877344669379563, 140735490163232, 140334025603520, 0, 3, -6170825902777652245, -6170782283670705173}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#14 0x00007fa21bb3d39d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
No locals.
#15 0x0000000000000000 in ?? ()
No symbol table info available.