#0  0xf50b92c7 in do_single_blorp_clear (brw=brw@entry=0xf546c01c, fb=fb@entry=0x973c5d0, rb=0x973c9f8, buf=0, partial_clear=false, encode_srgb=false)
    at /var/tmp/portage/media-libs/mesa-13.0.0/work/mesa-13.0.0/src/mesa/drivers/dri/i965/brw_blorp.c:868
        clear_color = {f32 = {0, 0, 1.40129846e-44, 0}, u32 = {0, 0, 10, 0}, i32 = {0, 0, 10, 0}}
        batch = {blorp = 0x1, driver_batch = 0x0, flags = (unknown: 0)}
        ctx = 0xf546c01c
        format = MESA_FORMAT_B8G8R8X8_UNORM
        x0 = 0
        x1 = 640
        y0 = 0
        y1 = 480
        can_fast_clear = <optimized out>
        color_write_disable = {false, false, false, false}
        is_lossless_compressed = false
        isl_tmp = {{dim = ISL_SURF_DIM_2D, dim_layout = ISL_DIM_LAYOUT_GEN4_2D, msaa_layout = ISL_MSAA_LAYOUT_NONE, tiling = ISL_TILING_X, 
            format = ISL_FORMAT_B8G8R8X8_UNORM, image_alignment_el = {{w = 4, width = 4}, {h = 2, height = 2}, {d = 1, depth = 1}}, logical_level0_px = {{w = 640, 
                width = 640}, {h = 480, height = 480}, {d = 1, depth = 1}, {a = 1, array_len = 1}}, phys_level0_sa = {{w = 640, width = 640}, {h = 480, height = 480}, 
              {d = 1, depth = 1}, {a = 1, array_len = 1}}, levels = 1, samples = 1, size = 0, alignment = 0, row_pitch = 2560, array_pitch_el_rows = 0, 
            array_pitch_span = ISL_ARRAY_PITCH_SPAN_FULL, usage = 1}, {dim = ISL_SURF_DIM_1D, dim_layout = (ISL_DIM_LAYOUT_GEN9_1D | unknown: 27394048), 
            msaa_layout = ISL_MSAA_LAYOUT_NONE, tiling = 4293881268, format = 160311928, image_alignment_el = {{w = 4115054620, width = 4115054620}, {h = 4115054620, 
                height = 4115054620}, {d = 4294967295, depth = 4294967295}}, logical_level0_px = {{w = 4150200089, width = 4150200089}, {h = 4114780160, 
                height = 4114780160}, {d = 4115054620, depth = 4115054620}, {a = 4115054620, array_len = 4115054620}}, phys_level0_sa = {{w = 4111586917, 
                width = 4111586917}, {h = 4111549277, height = 4111549277}, {d = 156161516, depth = 156161516}, {a = 3, array_len = 3}}, levels = 0, samples = 0, 
            size = 4111549255, alignment = 4114780160, row_pitch = 158582224, array_pitch_el_rows = 4111295258, array_pitch_span = (unknown: 156161516), 
            usage = 17824973654111289344}}
        surf = {surf = 0xffef6cec, addr = {buffer = 0x973cd00, read_domains = 2, write_domain = 2, offset = 0}, aux_surf = 0x2, aux_addr = {buffer = 0x0, 
            read_domains = 0, write_domain = 0, offset = 0}, aux_usage = ISL_AUX_USAGE_NONE, clear_color = {f32 = {0, 0, 0, 0}, u32 = {0, 0, 0, 0}, i32 = {0, 0, 0, 
              0}}}
        level = 0
        num_layers = 1
        __func__ = "do_single_blorp_clear"
#1  0xf50ba848 in brw_blorp_clear_color (brw=0xf546c01c, fb=0x973c5d0, mask=2, partial_clear=false, encode_srgb=false)
    at /var/tmp/portage/media-libs/mesa-13.0.0/work/mesa-13.0.0/src/mesa/drivers/dri/i965/brw_blorp.c:920
        rb = <optimized out>
        num_layers = 1
        buf = 0
#2  0xf50bb4e2 in brw_clear (ctx=0xf546c01c, mask=2) at /var/tmp/portage/media-libs/mesa-13.0.0/work/mesa-13.0.0/src/mesa/drivers/dri/i965/brw_clear.c:253
        encode_srgb = <optimized out>
        fb = 0x973c5d0
        partial_clear = <optimized out>
        tri_mask = <optimized out>
#3  0xf4d7eea8 in _mesa_Clear (mask=16384) at /var/tmp/portage/media-libs/mesa-13.0.0/work/mesa-13.0.0/src/mesa/main/clear.c:224
        bufferMask = 2
        ctx = <optimized out>
#4  0x083139dd in gl_clearwin () at linux/gl_draw.c:145
No locals.
#5  0x08313b8d in gl_start (width=640, height=480, req_depth=16, FullScreen=1) at linux/gl_draw.c:90
        flags = <optimized out>
        i = <optimized out>
#6  0x08312569 in startgame () at linux/sdllink.c:809
        ranonce = true
        status = <optimized out>
#7  0x0831294f in initwinvideo () at linux/sdllink.c:1010
        newmode = 1
#8  0x08310233 in initvideo ()
No symbol table info available.
#9  0x088bd49c in regptwa ()
No symbol table info available.
#10 0x083a0f30 in SA1tableG ()
No symbol table info available.
#11 0xffef6fc8 in ?? ()
No symbol table info available.
#12 0xf70ed557 in __libc_start_main () from /lib32/libc.so.6
No symbol table info available.
#13 0xf7728fbc in ?? () from /lib/ld-linux.so.2
No symbol table info available.
Backtrace stopped: previous frame inner to this frame (corrupt stack?)