Program received signal SIGSEGV, Segmentation fault.
0xb7dc3027 in memset () from /lib/libc.so.6
(gdb) bt
#0  0xb7dc3027 in memset () from /lib/libc.so.6
#1  0xa7974b68 in _mesa_memset (dst=0xa28b4008, val=1, n=923476)
    at main/imports.c:240
#2  0xa79fe666 in _swrast_write_rgba_span (ctx=0x84a6e50, span=0xbffe424c)
    at swrast/s_span.c:1271
#3  0xa7a1a653 in general_triangle (ctx=0x84a6e50, v0=0xa2682540,
    v1=0xa2682688, v2=0xa2682918) at swrast/s_tritemp.h:862
#4  0xa79f239e in _swrast_Triangle (ctx=0x84a6e50, v0=0xa2682540,
    v1=0xa2682688, v2=0xa2682918) at swrast/s_context.c:729
#5  0xa7a2d331 in triangle_rgba (ctx=0x84a6e50, e0=4, e1=5, e2=7)
    at swrast_setup/ss_tritmp.h:188
#6  0xa7a2d363 in quadfunc_rgba (ctx=0x84a6e50, v0=4, v1=5, v2=6, v3=7)
    at swrast_setup/ss_tritmp.h:250
#7  0xa79c6ef1 in clip_render_quads_verts (ctx=0x84a6e50, start=0, count=44,
    flags=55) at tnl/t_vb_rendertmp.h:338
#8  0xa79c9caa in run_render (ctx=0x84a6e50, stage=0x84cb30c)
    at tnl/t_vb_render.c:320
#9  0xa79c161b in _tnl_run_pipeline (ctx=0x84a6e50) at tnl/t_pipeline.c:158
#10 0xa7928bec in intelRunPipeline (ctx=0x84a6e50) at intel_tris.c:898
#11 0xa79c2509 in _tnl_draw_prims (ctx=0x84a6e50, arrays=0x84756e8,
    prim=0xbffe49f0, nr_prims=1, ib=0x0, min_index=0, max_index=43)
    at tnl/t_draw.c:402
#12 0xa79baa6f in vbo_exec_DrawArrays (mode=7, start=0, count=44)
    at vbo/vbo_exec_array.c:259
#13 0xb7d27729 in __glXDisp_DrawArrays (pc=0x89428d0 "") at render2.c:248
#14 0xb7d05e4e in __glXDisp_Render (cl=0x83d2c3c, pc=0x89428a0 "è\002Á")
    at glxcmds.c:1778
#15 0xb7d0a046 in __glXDispatch (client=0x83d2b08) at glxext.c:493
#16 0x0814ad0e in XaceCatchExtProc (client=0x83d2b08) at xace.c:294
#17 0x0808ac37 in Dispatch () at dispatch.c:502
#18 0x08072155 in main (argc=9, argv=0xbffe4c34, envp=Cannot access memory at address 0x27ddf
) at main.c:454
(gdb)