#0  0x2b3ad85a in ?? () from /usr/lib/arm-linux-gnueabihf/libcogl.so.5
No symbol table info available.
#1  0x2b3aed84 in cogl_object_unref () from /usr/lib/arm-linux-gnueabihf/libcogl.so.5
No symbol table info available.
#2  0x7ea652cc in ?? ()
No symbol table info available.
Cannot access memory at address 0x0
#3  0x7ea652cc in ?? ()
No symbol table info available.
Cannot access memory at address 0x0
Backtrace stopped: previous frame identical to this frame (corrupt stack?)