Program received signal SIGSEGV, Segmentation fault.
nv50_vertex_arrays_validate (nv50=0x55555584ad60) at nv50_vbo.c:338
338	      size = vb->buffer->width0;
(gdb) p *vb
$1 = {stride = 40, buffer_offset = 0, buffer = 0x0}
(gdb) up
#1  0x00007fffeb9dcd63 in nv50_state_validate (nv50=0x55555584ad60, mask=<optimized out>, words=8) at nv50_state_validate.c:385
385	            validate->func(nv50);
(gdb) p nv50->vertex->num_elements 
$2 = 2
(gdb) p nv50->vertex->element[0]
$3 = {pipe = {src_offset = 0, instance_divisor = 0, vertex_buffer_index = 0, src_format = PIPE_FORMAT_R32G32B32A32_FLOAT}, 
  state = 2114453504}
(gdb) p nv50->vertex->element[1]
$4 = {pipe = {src_offset = 0, instance_divisor = 0, vertex_buffer_index = 1, src_format = PIPE_FORMAT_R32G32_FLOAT}, 
  state = 2116026369}
(gdb) p nv50->num_vtxbufs 
$5 = 1
(gdb) p nv50->vtxbuf[0]
$6 = {stride = 32, buffer_offset = 1408, buffer = 0x7fffdc665400}
(gdb) p nv50->vtxbuf[1]
$7 = {stride = 40, buffer_offset = 0, buffer = 0x0}
(gdb) p *nv50
$8 = {base = {pipe = {winsys = 0x0, screen = 0x555555860af0, priv = 0x0, draw = 0x0, destroy = 0x7fffeb9d8300 <nv50_destroy>, 
      draw_vbo = 0x7fffeb9ddc40 <nv50_draw_vbo>, render_condition = 0x7fffeb9f3730 <nv50_render_condition>, 
      create_query = 0x7fffeb9f35b0 <nv50_query_create>, destroy_query = 0x7fffeb9f3590 <nv50_query_destroy>, 
      begin_query = 0x7fffeb9f38b0 <nv50_query_begin>, end_query = 0x7fffeb9f3aa0 <nv50_query_end>, 
      get_query_result = 0x7fffeb9f32e0 <nv50_query_result>, create_blend_state = 0x7fffeb9da670 <nv50_blend_state_create>, 
      bind_blend_state = 0x7fffeb9d9970 <nv50_blend_state_bind>, 
      delete_blend_state = 0x7fffeb9d9e50 <nv50_blend_state_delete>, 
      create_sampler_state = 0x7fffeb9daec0 <nv50_sampler_state_create>, 
      bind_fragment_sampler_states = 0x7fffeb9db6b0 <nv50_fp_sampler_states_bind>, 
      bind_vertex_sampler_states = 0x7fffeb9db5e0 <nv50_vp_sampler_states_bind>, 
      bind_geometry_sampler_states = 0x7fffeb9d99a0 <nv50_gp_sampler_states_bind>, 
      delete_sampler_state = 0x7fffeb9d9d70 <nv50_sampler_state_delete>, 
      create_rasterizer_state = 0x7fffeb9da210 <nv50_rasterizer_state_create>, 
      bind_rasterizer_state = 0x7fffeb9d9980 <nv50_rasterizer_state_bind>, 
      delete_rasterizer_state = 0x7fffeb9d9e40 <nv50_rasterizer_state_delete>, 
      create_depth_stencil_alpha_state = 0x7fffeb9d9e60 <nv50_zsa_state_create>, 
      bind_depth_stencil_alpha_state = 0x7fffeb9d9990 <nv50_zsa_state_bind>, 
      delete_depth_stencil_alpha_state = 0x7fffeb9d9e30 <nv50_zsa_state_delete>, 
      create_fs_state = 0x7fffeb9dad10 <nv50_fp_state_create>, bind_fs_state = 0x7fffeb9d9a80 <nv50_fp_state_bind>, 
      delete_fs_state = 0x7fffeb9d9d50 <nv50_sp_state_delete>, create_vs_state = 0x7fffeb9dad20 <nv50_vp_state_create>, 
      bind_vs_state = 0x7fffeb9d9a70 <nv50_vp_state_bind>, delete_vs_state = 0x7fffeb9d9d50 <nv50_sp_state_delete>, 
      create_gs_state = 0x7fffeb9dad00 <nv50_gp_state_create>, bind_gs_state = 0x7fffeb9d9aa0 <nv50_gp_state_bind>, 
      delete_gs_state = 0x7fffeb9d9d50 <nv50_sp_state_delete>, 
      create_vertex_elements_state = 0x7fffeb9dd240 <nv50_vertex_state_create>, 
      bind_vertex_elements_state = 0x7fffeb9d9cc0 <nv50_vertex_state_bind>, 
      delete_vertex_elements_state = 0x7fffeb9dd220 <nv50_vertex_state_delete>, 
      set_blend_color = 0x7fffeb9d9ab0 <nv50_set_blend_color>, set_stencil_ref = 0x7fffeb9d9ad0 <nv50_set_stencil_ref>, 
      set_sample_mask = 0x7fffeb9d9af0 <nv50_set_sample_mask>, set_clip_state = 0x7fffeb9d9ce0 <nv50_set_clip_state>, 
      set_constant_buffer = 0x7fffeb9db3b0 <nv50_set_constant_buffer>, 
      set_framebuffer_state = 0x7fffeb9d9b10 <nv50_set_framebuffer_state>, 
      set_polygon_stipple = 0x7fffeb9d9ba0 <nv50_set_polygon_stipple>, 
      set_scissor_state = 0x7fffeb9d9c60 <nv50_set_scissor_state>, 
      set_viewport_state = 0x7fffeb9d9c80 <nv50_set_viewport_state>, 
      set_fragment_sampler_views = 0x7fffeb9db910 <nv50_fp_set_sampler_views>, 
      set_vertex_sampler_views = 0x7fffeb9dad30 <nv50_vp_set_sampler_views>, 
---Type <return> to continue, or q <return> to quit---
      set_geometry_sampler_views = 0x7fffeb9db780 <nv50_gp_set_sampler_views>, 
      set_vertex_buffers = 0x7fffeb9db290 <nv50_set_vertex_buffers>, 
      set_index_buffer = 0x7fffeb9db510 <nv50_set_index_buffer>, create_stream_output_target = 0, 
      stream_output_target_destroy = 0, set_stream_output_targets = 0, 
      resource_copy_region = 0x7fffeb9d5770 <nv50_resource_copy_region>, 
      resource_resolve = 0x7fffeb9d4020 <nv50_resource_resolve>, clear = 0x7fffeb9d5cd0 <nv50_clear>, 
      clear_render_target = 0x7fffeb9d5420 <nv50_clear_render_target>, 
      clear_depth_stencil = 0x7fffeb9d4ce0 <nv50_clear_depth_stencil>, flush = 0x7fffeb9d81e0 <nv50_flush>, 
      create_sampler_view = 0x7fffeb9d6820 <nv50_create_sampler_view>, 
      sampler_view_destroy = 0x7fffeb9db470 <nv50_sampler_view_destroy>, 
      create_surface = 0x7fffeb9d9890 <nv50_surface_create>, surface_destroy = 0x7fffeb9d9740 <nv50_surface_destroy>, 
      get_transfer = 0x7fffebc026e0 <u_get_transfer_vtbl>, transfer_destroy = 0x7fffebc026f0 <u_transfer_destroy_vtbl>, 
      transfer_map = 0x7fffebc02700 <u_transfer_map_vtbl>, 
      transfer_flush_region = 0x7fffebc02710 <u_transfer_flush_region_vtbl>, 
      transfer_unmap = 0x7fffebc02720 <u_transfer_unmap_vtbl>, 
      transfer_inline_write = 0x7fffebc02730 <u_transfer_inline_write_vtbl>, 
      redefine_user_buffer = 0x7fffebc026b0 <u_default_redefine_user_buffer>, 
      texture_barrier = 0x7fffeb9d8290 <nv50_texture_barrier>, 
      create_video_decoder = 0x7fffeba31d20 <nouveau_context_create_decoder>, 
      create_video_buffer = 0x7fffeba30be0 <nouveau_context_video_buffer_create>}, screen = 0x555555860af0, 
    vbo_dirty = 0 '\000', cb_dirty = 0 '\000', copy_data = 0x7fffeb9d7980 <nv50_m2mf_copy_linear>, 
    push_data = 0x7fffeb9d76c0 <nv50_sifc_linear_u8>, push_cb = 0}, screen = 0x555555860af0, residents = {{data = 0x0, 
      size = 0, capacity = 0}, {data = 0x5555559fc9c0, size = 32, capacity = 32}, {data = 0x555555b87c60, size = 16, 
      capacity = 16}, {data = 0x555555bedc70, size = 16, capacity = 16}}, residents_size = 64, dirty = 2069647, state = {
    instance_elts = 0, instance_base = 0, interpolant_ctrl = 134349826, semantic_color = 16778244, semantic_psize = 0, 
    index_bias = 0, prim_restart = 0 '\000', point_sprite = 0 '\000', num_vtxbufs = 0 '\000', num_vtxelts = 2 '\002', 
    num_textures = "\000\000\001", num_samplers = "\000\000\001", scissor = 1}, blend = 0x5555559fc620, rast = 0x555555b87cc0, 
  zsa = 0x555555a0daa0, vertex = 0x7fffdc125eb0, vertprog = 0x7fffdc15c720, gmtyprog = 0x0, fragprog = 0x7fffdc676000, 
  constbuf = {{0x7fffdc678d00, 0x0 <repeats 15 times>}, {0x7fffdc675d90, 0x0 <repeats 15 times>}, {0x0 <repeats 16 times>}}, 
  constbuf_dirty = {0, 0, 0}, vtxbuf = {{stride = 32, buffer_offset = 1408, buffer = 0x7fffdc665400}, {stride = 40, 
      buffer_offset = 0, buffer = 0x0}, {stride = 40, buffer_offset = 0, buffer = 0x0}, {stride = 0, buffer_offset = 0, 
      buffer = 0x0} <repeats 29 times>}, num_vtxbufs = 1, idxbuf = {index_size = 4, offset = 0, buffer = 0x7fffdc3302b0}, 
  vbo_fifo = 0, vbo_user = 0, vbo_min_index = 0, vbo_max_index = 5, textures = {{0x0 <repeats 16 times>}, {
      0x0 <repeats 16 times>}, {0x7fffdc6788c0, 0x0 <repeats 15 times>}}, num_textures = {0, 0, 1}, samplers = {{
      0x0 <repeats 16 times>}, {0x0 <repeats 16 times>}, {0x7fffdc1c7560, 0x0 <repeats 15 times>}}, num_samplers = {0, 0, 1}, 
---Type <return> to continue, or q <return> to quit---
  framebuffer = {width = 1024, height = 768, nr_cbufs = 1, cbufs = {0x5555559fcca0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, 
    zsbuf = 0x5555559fd0d0}, blend_colour = {color = {0, 0, 0, 0}}, stencil_ref = {ref_value = "\000"}, stipple = {stipple = {
      4294967295 <repeats 32 times>}}, scissor = {minx = 496, miny = 369, maxx = 531, maxy = 397}, viewport = {scale = {17.5, 
      -14, 0.5, 1}, translate = {513.5, 385, 0.5, 0}}, clip = {ucp = {{0, 0, 0, 0}, {0, 0, 0, 0}, {0, 0, 0, 0}, {0, 0, 0, 0}, {
        0, 0, 0, 0}, {0, 0, 0, 0}, {0, 0, 0, 0}, {0, 0, 0, 0}}, nr = 0, depth_clamp = 1}, sample_mask = 4294967295, 
  vbo_push_hint = 1 '\001', draw = 0x55555584c0f0}
(gdb) 
(gdb) quit
A debugging session is active.

	Inferior 1 [process 30571] will be killed.

Quit anyway? (y or n) y