.
Thread 3 (Thread 1826):
#0  0x00007f1549caae33 in __poll (fds=<value optimized out>, nfds=<value optimized out>, timeout=<value optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
        resultvar = 18446744073709551100
        oldtype = 0
        result = <value optimized out>
#1  0x00007f154aff7104 in g_main_context_poll (context=0x1a79fd0, block=<value optimized out>, dispatch=1, self=<value optimized out>) at /build/buildd/glib2.0-2.28.4/./glib/gmain.c:3404
        poll_func = 0x7f154b007130 <g_poll>
#2  g_main_context_iterate (context=0x1a79fd0, block=<value optimized out>, dispatch=1, self=<value optimized out>) at /build/buildd/glib2.0-2.28.4/./glib/gmain.c:3086
        max_priority = 2147483647
        timeout = -1
        some_ready = <value optimized out>
        nfds = 1
        allocated_nfds = <value optimized out>
        fds = 0x23675a0
#3  0x00007f154aff79f2 in g_main_loop_run (loop=0x2357e80) at /build/buildd/glib2.0-2.28.4/./glib/gmain.c:3299
        __PRETTY_FUNCTION__ = "g_main_loop_run"
#4  0x00007f153980a69b in ?? () from /usr/lib/gio/modules/libdconfsettings.so
No symbol table info available.
#5  0x00007f154b01e3e4 in g_thread_create_proxy (data=0x1a79a90) at /build/buildd/glib2.0-2.28.4/./glib/gthread.c:1897
        thread = 0x1a79a90
        __PRETTY_FUNCTION__ = "g_thread_create_proxy"
#6  0x00007f154a922d8c in start_thread (arg=0x7f153589e700) at pthread_create.c:304
        pd = 0x7f153589e700
        now = <value optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {139729069270784, 735071351510983893, 140737358571440, 139729069271488, 0, 3, -857631798392199979, -857396574290647851}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
        robust = <value optimized out>
        sp = <value optimized out>
        freesize = <value optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#7  0x00007f1549cb7f7d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
No locals.
#8  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 2 (Thread 1750):
#0  0x00007f1549caae33 in __poll (fds=<value optimized out>, nfds=<value optimized out>, timeout=<value optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
        resultvar = 18446744073709551100
        oldtype = 0
        result = <value optimized out>
#1  0x00007f154aff7104 in g_main_context_poll (context=0x15bbb90, block=<value optimized out>, dispatch=1, self=<value optimized out>) at /build/buildd/glib2.0-2.28.4/./glib/gmain.c:3404
        poll_func = 0x7f154b007130 <g_poll>
#2  g_main_context_iterate (context=0x15bbb90, block=<value optimized out>, dispatch=1, self=<value optimized out>) at /build/buildd/glib2.0-2.28.4/./glib/gmain.c:3086
        max_priority = 2147483647
        timeout = -1
        some_ready = <value optimized out>
        nfds = 3
        allocated_nfds = <value optimized out>
        fds = 0x15bbfd0
#3  0x00007f154aff79f2 in g_main_loop_run (loop=0x15bbb70) at /build/buildd/glib2.0-2.28.4/./glib/gmain.c:3299
        __PRETTY_FUNCTION__ = "g_main_loop_run"
#4  0x00007f154c020d44 in gdbus_shared_thread_func (data=<value optimized out>) at /build/buildd/glib2.0-2.28.4/./gio/gdbusprivate.c:276
No locals.
#5  0x00007f154b01e3e4 in g_thread_create_proxy (data=0x15bbc70) at /build/buildd/glib2.0-2.28.4/./glib/gthread.c:1897
        thread = 0x15bbc70
        __PRETTY_FUNCTION__ = "g_thread_create_proxy"
#6  0x00007f154a922d8c in start_thread (arg=0x7f1547523700) at pthread_create.c:304
        pd = 0x7f1547523700
        now = <value optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {139729367611136, 735071351510983893, 140737358573424, 139729367611840, 0, 3, -857388327970478891, -857396574290647851}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
        robust = <value optimized out>
        sp = <value optimized out>
        freesize = <value optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#7  0x00007f1549cb7f7d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
No locals.
#8  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 1 (Thread 1746):
#0  0x00007f1549c4e8c3 in __libc_free (mem=0x7f1528209470) at malloc.c:3736
        ar_ptr = 0x7f1568000012
        p = 0x7f1528209460
        hook = <value optimized out>
#1  0x00007f15447ccf89 in ?? () from /lib/x86_64-linux-gnu/libdrm_intel.so.1
No symbol table info available.
#2  0x00007f15447cd379 in ?? () from /lib/x86_64-linux-gnu/libdrm_intel.so.1
No symbol table info available.
#3  0x00007f154536285c in intel_region_release () from /usr/lib/dri/i965_dri.so
No symbol table info available.
#4  0x00007f1545361aca in intel_miptree_release () from /usr/lib/dri/i965_dri.so
No symbol table info available.
#5  0x00007f154536d449 in ?? () from /usr/lib/dri/i965_dri.so
No symbol table info available.
#6  0x00007f1544fc5a1d in _mesa_delete_texture_image () from /usr/lib/dri/libdricore.so
No symbol table info available.
#7  0x00007f1544fca771 in _mesa_delete_texture_object () from /usr/lib/dri/libdricore.so
No symbol table info available.
#8  0x00007f1544fca9d3 in _mesa_reference_texobj () from /usr/lib/dri/libdricore.so
No symbol table info available.
#9  0x00007f1544fcb533 in _mesa_DeleteTextures () from /usr/lib/dri/libdricore.so
No symbol table info available.
#10 0x00007f153f1499ad in nux::IOpenGLTexture2D::~IOpenGLTexture2D() () from /usr/lib/libnux-graphics-0.9.so.0
No symbol table info available.
#11 0x00007f153f149ae9 in nux::IOpenGLTexture2D::~IOpenGLTexture2D() () from /usr/lib/libnux-graphics-0.9.so.0
No symbol table info available.
#12 0x00007f153e7e8a2b in nux::Object::Destroy() () from /usr/lib/libnux-core-0.9.so.0
No symbol table info available.
#13 0x00007f153e7e8c1e in nux::Object::UnReference() () from /usr/lib/libnux-core-0.9.so.0
No symbol table info available.
#14 0x00007f153f10fc6b in nux::CachedBaseTexture::~CachedBaseTexture() () from /usr/lib/libnux-graphics-0.9.so.0
No symbol table info available.
#15 0x00007f153f10fe09 in nux::CachedTexture2D::~CachedTexture2D() () from /usr/lib/libnux-graphics-0.9.so.0
No symbol table info available.
#16 0x00007f153e7e8a2b in nux::Object::Destroy() () from /usr/lib/libnux-core-0.9.so.0
No symbol table info available.
#17 0x00007f153e7e8c1e in nux::Object::UnReference() () from /usr/lib/libnux-core-0.9.so.0
No symbol table info available.
#18 0x00007f153f106ab3 in nux::GraphicsEngine::FlushCachedResourceData(nux::ResourceData*) () from /usr/lib/libnux-graphics-0.9.so.0
No symbol table info available.
#19 0x00007f153f10b9e6 in nux::ResourceData::~ResourceData() () from /usr/lib/libnux-graphics-0.9.so.0
No symbol table info available.
#20 0x00007f153f10e6b9 in nux::Texture2D::~Texture2D() () from /usr/lib/libnux-graphics-0.9.so.0
No symbol table info available.
#21 0x00007f153e7e8a2b in nux::Object::Destroy() () from /usr/lib/libnux-core-0.9.so.0
No symbol table info available.
#22 0x00007f153e7e8c1e in nux::Object::UnReference() () from /usr/lib/libnux-core-0.9.so.0
No symbol table info available.
#23 0x00007f153f80df52 in PanelMenuView::Refresh() () from /usr/lib/compiz/libunityshell.so
No symbol table info available.
#24 0x00007f153f810271 in PanelMenuView::OnActiveWindowChanged(_BamfView*, _BamfView*) () from /usr/lib/compiz/libunityshell.so
No symbol table info available.
#25 0x00007f154b8c381c in g_closure_invoke (closure=0x245ca20, return_value=0x0, n_param_values=3, param_values=0x2a48800, invocation_hint=0x7ffff843aeb0) at /build/buildd/glib2.0-2.28.4/./gobject/gclosure.c:767
        marshal = <value optimized out>
        marshal_data = <value optimized out>
        in_marshal = 0
        __PRETTY_FUNCTION__ = "g_closure_invoke"
#26 0x00007f154b8d5019 in signal_emit_unlocked_R (node=<value optimized out>, detail=0, instance=0x22eea80, emission_return=0x0, instance_and_params=0x2a48800) at /build/buildd/glib2.0-2.28.4/./gobject/gsignal.c:3252
        tmp = <value optimized out>
        handler = 0x2403f30
        accumulator = 0x0
        emission = {next = 0x7ffff843b340, instance = 0x22eea80, ihint = {signal_id = 187, detail = 0, run_type = G_SIGNAL_RUN_FIRST}, state = EMISSION_RUN, chain_type = 4}
        class_closure = 0x0
        handler_list = 0x2403f30
        return_accu = 0x0
        accu = {g_type = 0, data = {{v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}, {v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}}}
        signal_id = 187
        max_sequential_handler_number = 937
        return_value_altered = 0
#27 0x00007f154b8de258 in g_signal_emit_valist (instance=<value optimized out>, signal_id=<value optimized out>, detail=<value optimized out>, var_args=<value optimized out>) at /build/buildd/glib2.0-2.28.4/./gobject/gsignal.c:2983
        instance_and_params = 0x2a48800
        signal_return_type = 4
        param_values = 0x2a48818
        node = 0x2412020
        i = <value optimized out>
        n_params = 2
        __PRETTY_FUNCTION__ = "g_signal_emit_valist"
#28 0x00007f154b8de41f in g_signal_emit (instance=<value optimized out>, signal_id=<value optimized out>, detail=<value optimized out>) at /build/buildd/glib2.0-2.28.4/./gobject/gsignal.c:3040
        var_args = {{gp_offset = 40, fp_offset = 48, overflow_arg_area = 0x7ffff843b1a0, reg_save_area = 0x7ffff843b0e0}}
#29 0x00007f153cb6ac2f in ?? () from /usr/lib/libdbus-glib-1.so.2
No symbol table info available.
#30 0x00007f154b8c381c in g_closure_invoke (closure=0x245c9f0, return_value=0x0, n_param_values=3, param_values=0x2a488f0, invocation_hint=0x7ffff843b350) at /build/buildd/glib2.0-2.28.4/./gobject/gclosure.c:767
        marshal = <value optimized out>
        marshal_data = <value optimized out>
        in_marshal = 0
        __PRETTY_FUNCTION__ = "g_closure_invoke"
#31 0x00007f154b8d5019 in signal_emit_unlocked_R (node=<value optimized out>, detail=1065, instance=0x2364630, emission_return=0x0, instance_and_params=0x2a488f0) at /build/buildd/glib2.0-2.28.4/./gobject/gsignal.c:3252
        tmp = <value optimized out>
        handler = 0x2403f00
        accumulator = 0x0
        emission = {next = 0x0, instance = 0x2364630, ihint = {signal_id = 189, detail = 1065, run_type = G_SIGNAL_RUN_FIRST}, state = EMISSION_RUN, chain_type = 4}
        class_closure = 0x0
        handler_list = 0x2403ed0
        return_accu = 0x0
        accu = {g_type = 0, data = {{v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}, {v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}}}
        signal_id = 189
        max_sequential_handler_number = 937
        return_value_altered = 0
#32 0x00007f154b8de258 in g_signal_emit_valist (instance=<value optimized out>, signal_id=<value optimized out>, detail=<value optimized out>, var_args=<value optimized out>) at /build/buildd/glib2.0-2.28.4/./gobject/gsignal.c:2983
        instance_and_params = 0x2a488f0
        signal_return_type = 4
        param_values = 0x2a48908
        node = 0x245c8b0
        i = <value optimized out>
        n_params = 2
        __PRETTY_FUNCTION__ = "g_signal_emit_valist"
#33 0x00007f154b8de41f in g_signal_emit (instance=<value optimized out>, signal_id=<value optimized out>, detail=<value optimized out>) at /build/buildd/glib2.0-2.28.4/./gobject/gsignal.c:3040
        var_args = {{gp_offset = 40, fp_offset = 48, overflow_arg_area = 0x7ffff843b640, reg_save_area = 0x7ffff843b580}}
#34 0x00007f153cb6b75b in ?? () from /usr/lib/libdbus-glib-1.so.2
No symbol table info available.
#35 0x00007f153c924ac6 in dbus_connection_dispatch () from /lib/x86_64-linux-gnu/libdbus-1.so.3
No symbol table info available.
#36 0x00007f153cb64655 in ?? () from /usr/lib/libdbus-glib-1.so.2
No symbol table info available.
#37 0x00007f154aff6bcd in g_main_dispatch (context=0x15bbea0) at /build/buildd/glib2.0-2.28.4/./glib/gmain.c:2440
        dispatch = 0x7f153cb64640
        was_in_call = 0
        user_data = 0x0
        callback = 0
        cb_funcs = 0x0
        cb_data = 0x0
        current_source_link = {data = 0x2445d80, next = 0x0}
        need_destroy = <value optimized out>
        source = 0x2445d80
        current = 0x15bca90
        i = <value optimized out>
#38 g_main_context_dispatch (context=0x15bbea0) at /build/buildd/glib2.0-2.28.4/./glib/gmain.c:3013
No locals.
#39 0x00007f154aff73a8 in g_main_context_iterate (context=0x15bbea0, block=<value optimized out>, dispatch=1, self=<value optimized out>) at /build/buildd/glib2.0-2.28.4/./glib/gmain.c:3091
        max_priority = 0
        timeout = 0
        some_ready = 1
        nfds = 14
        allocated_nfds = <value optimized out>
        fds = <value optimized out>
#40 0x00007f154aff79f2 in g_main_loop_run (loop=0x15fcf00) at /build/buildd/glib2.0-2.28.4/./glib/gmain.c:3299
        __PRETTY_FUNCTION__ = "g_main_loop_run"
#41 0x000000000042a1ea in CompScreen::eventLoop() ()
No symbol table info available.
#42 0x0000000000423140 in main ()
No symbol table info available.