Program received signal SIGABRT, Aborted.                                       
0x00007f1bae20ef85 in raise () from /lib/libc.so.6                              
(gdb) bt                                                                        
#0  0x00007f1bae20ef85 in raise () from /lib/libc.so.6                          
#1  0x00007f1bae2104a3 in abort () from /lib/libc.so.6                          
#2  0x00007f1bae207f59 in __assert_fail () from /lib/libc.so.6                  
#3  0x00007f1b9bfc8e42 in dri_fake_emit_reloc (reloc_buf=0x12ef5650,            
    flags=33554433, delta=0, offset=4, target_buf=0x12ef5900)                   
    at ../common/dri_bufmgr_fake.c:982                                          
#4  0x00007f1b9c00b6eb in prepare_wm_surfaces (brw=0xe9e5e0)                    
    at brw_wm_surface_state.c:206                                               
#5  0x00007f1b9bff2a5e in brw_validate_state (brw=0xe9e5e0)                     
    at brw_state_upload.c:223                                                   
#6  0x00007f1b9bfe7cad in brw_draw_prims (ctx=0xe9e5e0, arrays=0xec5928,        
    prim=0x7fffb722ad80, nr_prims=1, ib=0x0, min_index=0, max_index=3)          
    at brw_draw.c:315                                                           
#7  0x00007f1b9c0907a8 in vbo_exec_DrawArrays (mode=7, start=0, count=4)        
    at vbo/vbo_exec_array.c:263                                                 
#8  0x00007f1bad55cc2c in __glXDisp_DrawArrays (pc=0xf216a6c "")                
    at render2.c:248                                                            
#9  0x00007f1bad556e26 in __glXDisp_Render (cl=<value optimized out>,           
    pc=0xf216a3c "x") at glxcmds.c:1788                                         
#10 0x00007f1bad55b0f2 in __glXDispatch (client=0x10daf00) at glxext.c:492      
#11 0x000000000044e684 in Dispatch () at dispatch.c:448                         
#12 0x0000000000433e2d in main (argc=8, argv=0x7fffb722b058,                    
    envp=<value optimized out>) at main.c:415                                   
(gdb)