==00:01:01:35.906 26087== Invalid read of size 8
==00:01:01:35.906 26087==    at 0x32868A52: ??? (in /usr/lib/xorg/modules/dri/i965_dri.so)
==00:01:01:35.906 26087==    by 0x328445FA: ??? (in /usr/lib/xorg/modules/dri/i965_dri.so)
==00:01:01:35.906 26087==    by 0x32843F6C: ??? (in /usr/lib/xorg/modules/dri/i965_dri.so)
==00:01:01:35.906 26087==    by 0x32868B69: ??? (in /usr/lib/xorg/modules/dri/i965_dri.so)
==00:01:01:35.906 26087==    by 0x328440F7: ??? (in /usr/lib/xorg/modules/dri/i965_dri.so)
==00:01:01:35.906 26087==    by 0x32843F6C: ??? (in /usr/lib/xorg/modules/dri/i965_dri.so)
==00:01:01:35.906 26087==    by 0x328441AD: ??? (in /usr/lib/xorg/modules/dri/i965_dri.so)
==00:01:01:35.906 26087==    by 0x32843F6C: ??? (in /usr/lib/xorg/modules/dri/i965_dri.so)
==00:01:01:35.906 26087==    by 0x328694D6: ??? (in /usr/lib/xorg/modules/dri/i965_dri.so)
==00:01:01:35.906 26087==    by 0x32838392: ??? (in /usr/lib/xorg/modules/dri/i965_dri.so)
==00:01:01:35.906 26087==    by 0x32838578: ??? (in /usr/lib/xorg/modules/dri/i965_dri.so)
==00:01:01:35.906 26087==    by 0x326E1DDA: ??? (in /usr/lib/xorg/modules/dri/i965_dri.so)
==00:01:01:35.906 26087==    by 0x14B19B87: gst_gl_shader_compile (gstglshader.c:428)
==00:01:01:35.906 26087==    by 0x14B1F16E: _create_shader (gstgldownload.c:686)
==00:01:01:35.906 26087==    by 0x14B1F2D5: _init_download_shader (gstgldownload.c:783)
==00:01:01:35.906 26087==    by 0x14B1F7EE: _init_download (gstgldownload.c:660)
==00:01:01:35.906 26087==    by 0x14B22B87: _run_message_sync (gstglwindow.c:317)
==00:01:01:35.906 26087==    by 0x14B26411: _run_message (gstglwindow_x11.c:620)
==00:01:01:35.906 26087==    by 0x62DC295: g_main_context_dispatch (in /usr/lib/libglib-2.0.so.0.3800.2)
==00:01:01:35.906 26087==    by 0x62DC5E7: ??? (in /usr/lib/libglib-2.0.so.0.3800.2)
==00:01:01:35.906 26087==    by 0x62DC9E9: g_main_loop_run (in /usr/lib/libglib-2.0.so.0.3800.2)
==00:01:01:35.906 26087==    by 0x14B0D203: gst_gl_context_create_thread (gstglcontext.c:787)
==00:01:01:35.906 26087==    by 0x6300FB4: ??? (in /usr/lib/libglib-2.0.so.0.3800.2)
==00:01:01:35.906 26087==    by 0x659C0A1: start_thread (in /usr/lib/libpthread-2.19.so)
==00:01:01:35.906 26087==  Address 0x31d7c538 is 56 bytes inside a block of size 184 free'd
==00:01:01:35.906 26087==    at 0x4C2999C: free (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==00:01:01:35.906 26087==    by 0x3286F32C: ??? (in /usr/lib/xorg/modules/dri/i965_dri.so)
==00:01:01:35.906 26087==    by 0x328186CF: ??? (in /usr/lib/xorg/modules/dri/i965_dri.so)
==00:01:01:35.906 26087==    by 0x32838748: ??? (in /usr/lib/xorg/modules/dri/i965_dri.so)
==00:01:01:35.906 26087==    by 0x3287121D: ??? (in /usr/lib/xorg/modules/dri/i965_dri.so)
==00:01:01:35.906 26087==    by 0x127971A1: ??? (in /usr/lib/mesa-libGL.so.1.2.0)
==00:01:01:35.906 26087==    by 0x12773A55: ??? (in /usr/lib/mesa-libGL.so.1.2.0)
==00:01:01:35.906 26087==    by 0x12773AD4: ??? (in /usr/lib/mesa-libGL.so.1.2.0)
==00:01:01:35.906 26087==    by 0x12773BD4: ??? (in /usr/lib/mesa-libGL.so.1.2.0)
==00:01:01:35.906 26087==    by 0x67D09F1: XCloseDisplay (in /usr/lib/libX11.so.6.3.0)
==00:01:01:35.906 26087==    by 0x14B268BB: gst_gl_window_x11_close (gstglwindow_x11.c:295)
==00:01:01:35.906 26087==    by 0x14B0D29B: gst_gl_context_create_thread (gstglcontext.c:805)
==00:01:01:35.906 26087==    by 0x6300FB4: ??? (in /usr/lib/libglib-2.0.so.0.3800.2)
==00:01:01:35.906 26087==    by 0x659C0A1: start_thread (in /usr/lib/libpthread-2.19.so)