#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 (region_handle=0x2dc7aa8) at intel_regions.c:294
        region = 0x2da6ef0
        __FUNCTION__ = "intel_region_release"
#4  0x00007f1545361aca in intel_miptree_release (intel=<value optimized out>, mt=0x2785668) at intel_mipmap_tree.c:204
        i = <value optimized out>
        __FUNCTION__ = "intel_miptree_release"
#5  0x00007f154536d449 in intelFreeTextureImageData (ctx=0x162ecd0, texImage=0x27855e0) at intel_tex.c:55
        __FUNCTION__ = "intelFreeTextureImageData"
#6  0x00007f1544fc5a1d in _mesa_delete_texture_image (ctx=<value optimized out>, texImage=0x27855e0) at main/teximage.c:606
No locals.
#7  0x00007f1544fca771 in _mesa_delete_texture_object (ctx=0x162ecd0, texObj=0x2a3bc00) at main/texobj.c:200
        i = <value optimized out>
        face = <value optimized out>
#8  0x00007f1544fca9d3 in _mesa_reference_texobj (ptr=0x7ffff843a848, tex=0x0) at main/texobj.c:345
        ctx = <value optimized out>
        deleteFlag = 1 '\001'
        oldTex = 0x2a3bc00
        __PRETTY_FUNCTION__ = "_mesa_reference_texobj"
#9  0x00007f1544fcb533 in _mesa_DeleteTextures (n=1, textures=<value optimized out>) at main/texobj.c:953
        delObj = 0x2a3bc00
        ctx = 0x162ecd0
        i = <value optimized out>
#10 0x00007f153f1499ad in nux::IOpenGLTexture2D::~IOpenGLTexture2D (this=0x2daf310, __in_chrg=<value optimized out>) at ./IOpenGLTexture2D.cpp:69
No locals.
#11 0x00007f153f149ae9 in nux::IOpenGLTexture2D::~IOpenGLTexture2D (this=0x2daf310, __in_chrg=<value optimized out>) at ./IOpenGLTexture2D.cpp:73
No locals.
#12 0x00007f153e7e8a2b in nux::Object::Destroy (this=0x2daf310) at ./Object.cpp:430
No locals.
#13 0x00007f153e7e8c1e in nux::Object::UnReference (this=0x2daf310) at ./Object.cpp:333
No locals.
#14 0x00007f153f10fc6b in ReleaseReference (this=0x2a2beb0, __in_chrg=<value optimized out>) at ../NuxCore/ObjectPtr.h:412
        delete_warning = 176
        destroyed = false
#15 Release (this=0x2a2beb0, __in_chrg=<value optimized out>) at ../NuxCore/ObjectPtr.h:388
No locals.
#16 nux::CachedBaseTexture::~CachedBaseTexture (this=0x2a2beb0, __in_chrg=<value optimized out>) at ./GLTextureResourceManager.cpp:361
No locals.
#17 0x00007f153f10fe09 in nux::CachedTexture2D::~CachedTexture2D (this=0x2a2beb0, __in_chrg=<value optimized out>) at ./GLTextureResourceManager.cpp:411
No locals.
#18 0x00007f153e7e8a2b in nux::Object::Destroy (this=0x2a2beb0) at ./Object.cpp:430
No locals.
#19 0x00007f153e7e8c1e in nux::Object::UnReference (this=0x2a2beb0) at ./Object.cpp:333
No locals.
#20 0x00007f153f106ab3 in ReleaseReference (this=0x1aeb280, Resource=<value optimized out>) at ../NuxCore/ObjectPtr.h:412
No locals.
#21 ~ObjectPtr (this=0x1aeb280, Resource=<value optimized out>) at ../NuxCore/ObjectPtr.h:234
No locals.
#22 FlushResourceId (this=0x1aeb280, Resource=<value optimized out>) at ./GLResourceManager.h:310
        CachedResource = {ptr_ = 0x2a2beb0, _reference_count = 0x2cff0c0, _weak_reference_count = 0x2de08a0, _objectptr_count = 0x2a47790, _destroyed = 0x2ef07c0}
#23 nux::GraphicsEngine::FlushCachedResourceData (this=0x1aeb280, Resource=<value optimized out>) at ./GraphicsEngine.cpp:1235
        cached = <value optimized out>
#24 0x00007f153f10b9e6 in nux::ResourceData::~ResourceData (this=0x2e092c0, __in_chrg=<value optimized out>) at ./GLResourceManager.cpp:49
No locals.
#25 0x00007f153f10e6b9 in nux::Texture2D::~Texture2D (this=0x2e092c0, __in_chrg=<value optimized out>) at ./GLTextureResourceManager.cpp:294
No locals.
#26 0x00007f153e7e8a2b in nux::Object::Destroy (this=0x2e092c0) at ./Object.cpp:430
No locals.
#27 0x00007f153e7e8c1e in nux::Object::UnReference (this=0x2e092c0) at ./Object.cpp:333
No locals.
#28 0x00007f153f80df52 in PanelMenuView::Refresh (this=0x242f600) at /build/buildd/unity-3.6.6/src/PanelMenuView.cpp:569
        geo = {x = 66, y = 0, width = 902, height = 24}
        texture2D = 0x2cf1630
        text_margin = 30
        cairo_graphics = {m_surface_format = CAIRO_FORMAT_ARGB32, _cairo_surface = 0x24ba430, _cr = 0x2e27ac0, _width = 902, _height = 24, _zoom = 1, _opacity = 1, _opacity_stack = {c = {<std::_Deque_base<float, std::allocator<float> >> = {_M_impl = {<std::allocator<float>> = {<__gnu_cxx::new_allocator<float>> = {<No data fields>}, <No data fields>}, _M_map = 0x2ef0820, _M_map_size = 8, _M_start = {_M_cur = 0x2dbd400, _M_first = 0x2dbd400, _M_last = 0x2dbd600, _M_node = 0x2ef0838}, _M_finish = {_M_cur = 0x2dbd400, _M_first = 0x2dbd400, _M_last = 0x2dbd600, _M_node = 0x2ef0838}}}, <No data fields>}}}
        linpat = <value optimized out>
        x = <value optimized out>
        width = 902
        bitmap = <value optimized out>
        texxform = {u0 = 0, v0 = 0, u1 = 0, v1 = 0, uscale = 1, vscale = 1, uoffset = 0, voffset = 0, uwrap = nux::TEXWRAP_REPEAT, vwrap = nux::TEXWRAP_REPEAT, min_filter = nux::TEXFILTER_NEAREST, mag_filter = nux::TEXFILTER_NEAREST, flip_u_coord = false, flip_v_coord = false, m_tex_coord_type = nux::TexCoordXForm::OFFSET_COORD}
        layout = <value optimized out>
        settings = <value optimized out>
        screen = <value optimized out>
        y = <value optimized out>
        text_width = 0
        text_height = <value optimized out>
        label = 0x2e04640 "Terminal"
        desc = <value optimized out>
        cr = <value optimized out>
        font_description = 0x2e273e0 "\304\001"
        dpi = 98304
        height = 4
        rop = {Blend = true, SrcBlend = 1, DstBlend = 771, static Default = {Blend = false, SrcBlend = 770, DstBlend = 771, static Default = <same as static member of an already seen type>}}
#29 0x00007f153f810271 in PanelMenuView::OnActiveWindowChanged (this=0x242f600, old_view=<value optimized out>, new_view=0x0) at /build/buildd/unity-3.6.6/src/PanelMenuView.cpp:700
No locals.
#30 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"
#31 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
#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 = 0x2a48800
        signal_return_type = 4
        param_values = 0x2a48818
        node = 0x2412020
        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 = 0x7ffff843b1a0, reg_save_area = 0x7ffff843b0e0}}
#34 0x00007f153cb6ac2f in marshal_dbus_message_to_g_marshaller (closure=0x245c9f0, return_value=0x0, n_param_values=<value optimized out>, param_values=<value optimized out>, invocation_hint=0x7ffff843b350, marshal_data=0x0) at dbus-gproxy.c:1681
        value_array = 0x24ba000
        c_marshaller = 0x7f153e5a9340 <bamf_marshal_VOID__STRING_STRING>
        proxy = 0x2364630
        message = 0x2e13160
        gsignature = <value optimized out>
        types = <value optimized out>
        priv = 0x2471430
        __PRETTY_FUNCTION__ = "marshal_dbus_message_to_g_marshaller"
#35 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"
#36 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
#37 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"
#38 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}}
#39 0x00007f153cb6b75b in dbus_g_proxy_emit_remote_signal (connection=<value optimized out>, message=<value optimized out>, user_data=0x2404860) at dbus-gproxy.c:1734
        gsignature = <value optimized out>
        i = <value optimized out>
        interface = <value optimized out>
        signal = <value optimized out>
        q = 1065
        name = 0x2e23b90 "org-ayatana-bamf-matcher-ActiveWindowChanged"
        priv = 0x2364650
        msg_gsignature = <value optimized out>
#40 dbus_g_proxy_manager_filter (connection=<value optimized out>, message=<value optimized out>, user_data=0x2404860) at dbus-gproxy.c:1301
        proxy = 0x2364630
        tri = <value optimized out>
        tmp = 0x2457990
        full_list = 0x2457990
        owned_names = <value optimized out>
        sender = <value optimized out>
        manager = 0x2404860
        __PRETTY_FUNCTION__ = "dbus_g_proxy_manager_filter"
#41 0x00007f153c924ac6 in dbus_connection_dispatch () from /lib/x86_64-linux-gnu/libdbus-1.so.3
No symbol table info available.
#42 0x00007f153cb64655 in message_queue_dispatch (source=<value optimized out>, callback=<value optimized out>, user_data=<value optimized out>) at dbus-gmain.c:101
        connection = 0x2457650
#43 0x00007f154aff6bcd in g_main_dispatch (context=0x15bbea0) at /build/buildd/glib2.0-2.28.4/./glib/gmain.c:2440
        dispatch = 0x7f153cb64640 <message_queue_dispatch>
        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>
#44 g_main_context_dispatch (context=0x15bbea0) at /build/buildd/glib2.0-2.28.4/./glib/gmain.c:3013
No locals.
#45 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>
#46 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"
#47 0x000000000042a1ea in CompScreen::eventLoop() ()
No symbol table info available.
#48 0x0000000000423140 in main ()
No symbol table info available.