r300_emit.c:865:r300_emit_vertex_arrays: Assertion `(buf)' failed.

Program received signal SIGTRAP, Trace/breakpoint trap.
0x0284aa37 in _debug_assert_fail (expr=0x317ebdd "(buf)", file=
    0x317e880 "r300_emit.c", line=865, function=
    0x317ee7c "r300_emit_vertex_arrays") at util/u_debug.c:278
278	      os_abort();
(gdb) bt full
#0  0x0284aa37 in _debug_assert_fail (expr=0x317ebdd "(buf)", file=
    0x317e880 "r300_emit.c", line=865, function=
    0x317ee7c "r300_emit_vertex_arrays") at util/u_debug.c:278
No locals.
#1  0x0259623d in r300_emit_vertex_arrays (r300=0xa345c000, offset=0, indexed=
    16 '\020', instance_id=-1) at r300_emit.c:865
        vbuf = 0xa345c510
        velem = 0x96c94804
        buf = 0x0
        i = 1
        vertex_array_count = 2
        packet_size = 3
        vb1 = 0xa345c510
        vb2 = 0xa345c520
        hw_format_size = 0x96c94a04
        size1 = 8
        size2 = 12
        offset1 = 2648569856
        offset2 = 18
        stride1 = 2739257344
        stride2 = 39420710
        cs_copy = 0x9dac5000
        cs_winsys = 0x9dbe6c00
        cs_count = 2
        __FUNCTION__ = "r300_emit_vertex_arrays"
#2  0x02599dc6 in r300_emit_states (r300=0xa345c000, flags=
    (PREP_EMIT_STATES | PREP_VALIDATE_VBOS | PREP_EMIT_VARRAYS | PREP_INDEXED), index_buffer=0x96b27c00, buffer_offset=0, index_bias=0, instance_id=-1)
    at r300_render.c:273
        emit_states = 1 '\001'
        emit_vertex_arrays = 4 '\004'
        emit_vertex_arrays_swtcl = 0 '\000'
        indexed = 16 '\020'
        validate_vbos = 2 '\002'
#3  0x02599e6e in r300_prepare_for_rendering (r300=0xa345c000, flags=
    (PREP_EMIT_STATES | PREP_VALIDATE_VBOS | PREP_EMIT_VARRAYS | PREP_INDEXED), index_buffer=0x96b27c00, cs_dwords=19, buffer_offset=0, index_bias=0, 
    instance_id=-1) at r300_render.c:311
No locals.
#4  0x0259b336 in r300_draw_elements (r300=0xa345c000, info=0xbfff9658, 
    instance_id=-1) at r300_render.c:642
        indexBuffer = 0x96b27c00
        indexSize = 2
        orgIndexBuffer = 0x96b27c00
        start = 0
        count = 6
        alt_num_verts = 0 '\000'
        short_count = 56305776
        buffer_offset = 0
        index_offset = 0
        indices3 = {859, 11424, 40454}
#5  0x0259b906 in r300_draw_vbo (pipe=0xa345c000, dinfo=0xbfff97b0)
    at r300_render.c:830
        max_count = 76
        r300 = 0xa345c000
        info = {indexed = 1 '\001', mode = 4, start = 0, count = 6, 
          start_instance = 0, instance_count = 1, index_bias = 0, min_index = 
    0, max_index = 75, primitive_restart = 0 '\000', restart_index = 0, 
          count_from_stream_output = 0x0}
#6  0x0286b696 in u_vbuf_draw_vbo (mgr=0x9b325000, info=0xbfff97b0)
    at util/u_vbuf.c:998
        pipe = 0xa345c000
        start_vertex = 40564496
        min_index = -1557186304
        num_vertices = 3221198712
        unroll_indices = 0 '\000'
        user_vb_mask = 0
        __FUNCTION__ = "u_vbuf_draw_vbo"
#7  0x028093f1 in cso_draw_vbo (cso=0x9b324000, info=0xbfff97b0)
    at cso_cache/cso_context.c:1382
        vbuf = 0x9b325000
#8  0x026afd48 in st_draw_vbo (ctx=0x9dae7000, prims=0xbfff9894, nr_prims=1, 
    ib=0xbfff98a8, index_bounds_valid=0 '\000', min_index=4294967295, 
    max_index=4294967295, tfb_vertcount=0x0) at state_tracker/st_draw.c:831
        st = 0x9da8d000
        ibuffer = {index_size = 2, offset = 0, buffer = 0x96b27c00, 
          user_buffer = 0x0}
        info = {indexed = 1 '\001', mode = 4, start = 0, count = 6, 
          start_instance = 0, instance_count = 1, index_bias = 0, min_index = 
    0, max_index = 4294967295, primitive_restart = 0 '\000', restart_index = 
    0, count_from_stream_output = 0x0}
        arrays = 0x9b311690
        i = 0
        new_array = 0 '\000'
        __FUNCTION__ = "st_draw_vbo"
#9  0x027ba284 in vbo_handle_primitive_restart (ctx=0x9dae7000, prim=
    0xbfff9894, nr_prims=1, ib=0xbfff98a8, index_bounds_valid=0 '\000', 
    min_index=4294967295, max_index=4294967295) at vbo/vbo_exec_array.c:570
        vbo = 0x9b30f000
#10 0x027ba866 in vbo_validated_drawrangeelements (ctx=0x9dae7000, mode=4, 
    index_bounds_valid=0 '\000', start=4294967295, end=4294967295, count=6, 
    type=5123, indices=0x0, basevertex=0, numInstances=1)
    at vbo/vbo_exec_array.c:839
        vbo = 0x9b30f000
        exec = 0x9b30f8c4
        ib = {count = 6, type = 5123, obj = 0x96d5fd80, ptr = 0x0}
        prim = {{mode = 4, indexed = 1, begin = 1, end = 1, weak = 0, 
            no_current_update = 0, pad = 0, start = 0, count = 6, basevertex = 
    0, num_instances = 1}}
#11 0x027bada3 in vbo_exec_DrawElements (mode=4, count=6, type=5123, indices=
    0x0) at vbo/vbo_exec_array.c:973
        ctx = 0x9dae7000
        __FUNCTION__ = "vbo_exec_DrawElements"
#12 0x00ad707f in ?? () from /usr/lib/xulrunner-2/libxul.so
No symbol table info available.
#13 0x00e9d617 in ?? () from /usr/lib/xulrunner-2/libxul.so
No symbol table info available.
#14 0x022a562c in ?? ()
No symbol table info available.
#15 0x004e8250 in ?? () from /usr/lib/xulrunner-2/libmozjs.so
No symbol table info available.