(gdb) c
Continuing.

Program received signal SIGSEGV, Segmentation fault.
memcpy () at ../sysdeps/i386/i686/memcpy.S:75
75	../sysdeps/i386/i686/memcpy.S: No such file or directory.
	in ../sysdeps/i386/i686/memcpy.S
Current language:  auto; currently asm
(gdb) backtrace full
#0  memcpy () at ../sysdeps/i386/i686/memcpy.S:75
No locals.
#1  0xb55c1000 in ?? ()
No symbol table info available.
#2  0xb5b7dd64 in brw_prepare_vertices (brw=0x8f64248) at brw_draw_upload.c:476
        vs_inputs = <value optimized out>
        i = 0
        ptr = 0x0
        interleave = 0
        min_index = 0
        max_index = 3
        upload = {0x8f79884, 0x8f3b9a0, 0x9556058, 0xbfbb44a8, 0xb6c4ea66, 
          0x8f3b9a0, 0xb7f3e89c, 0xbfbb44d8, 0xb7f3b12e, 0x8f3b9a0, 0x8f79d58, 
          0x8f79620, 0xbfbb44f4, 0x8f79d4c, 0x8f79620, 0x9, 0xb5daf31c, 
          0x9556058, 0x8f64248, 0xbfbb44e8, 0xb5b7d361, 0x9556058, 0x3e0a0000, 
          0xbfbb4518, 0xb5b83f4b, 0x9556058, 0x1, 0x1, 0x1, 0x8, 0x2, 0x0}
        nr_uploads = 1
        __PRETTY_FUNCTION__ = "brw_prepare_vertices"
#3  0xb5b8aab4 in brw_validate_state (brw=0x8f64248) at brw_state_upload.c:322
        atom = 0x1
        __PRETTY_FUNCTION__ = "brw_validate_state"
#4  0xb5b7c925 in brw_try_draw_prims (ctx=0x8f64248, arrays=0x8fa77cc, 
    prim=0xbfbb460c, nr_prims=1, ib=0x0, index_bounds_valid=1 '\1', 
---Type <return> to continue, or q <return> to quit---
    min_index=0, max_index=3) at brw_draw.c:371
        hw_prim = 6
        warn = 0 '\0'
        first_time = 1 '\1'
        i = 0
        __func__ = "brw_try_draw_prims"
        warned = 0 '\0'
#5  brw_draw_prims (ctx=0x8f64248, arrays=0x8fa77cc, prim=0xbfbb460c, 
    nr_prims=1, ib=0x0, index_bounds_valid=1 '\1', min_index=0, max_index=3)
    at brw_draw.c:454
        retval = 0 '\0'
#6  0xb5c44691 in vbo_exec_DrawArrays (mode=6, start=0, count=4)
    at vbo/vbo_exec_array.c:523
        ctx = 0x8f64248
        prim = {{mode = 6, indexed = 0, begin = 1, end = 1, weak = 0, pad = 0, 
            start = 0, count = 4, basevertex = 0}}
#7  0xb5cc4861 in _mesa_meta_Clear (ctx=0x8f64248, 
    buffers=<value optimized out>) at drivers/common/meta.c:1309
        verts = {{x = 0, y = 280, z = -1, r = 0.450980395, g = 0.450980395, 
            b = 0.450980395, a = 0}, {x = 1680, y = 280, z = -1, 
            r = 0.450980395, g = 0.450980395, b = 0.450980395, a = 0}, {
            x = 1680, y = 971, z = -1, r = 0.450980395, g = 0.450980395, 
            b = 0.450980395, a = 0}, {x = 0, y = 971, z = -1, r = 0.450980395, 
---Type <return> to continue, or q <return> to quit---
            g = 0.450980395, b = 0.450980395, a = 0}}
        metaSave = <value optimized out>
        __PRETTY_FUNCTION__ = "_mesa_meta_Clear"
#8  0xb5b42c66 in intelClear (ctx=0x8f64248, mask=18) at intel_clear.c:175
        tri_mask = 18
        blit_mask = 0
        swrast_mask = 0
        fb = 0x92a9c18
        i = 0
#9  0xb5bb98f9 in _mesa_Clear (mask=16640) at main/clear.c:182
        bufferMask = 18
        ctx = 0x8f64248