stack trace llvmpipe crash

gistfile1.txt

#0  0x00007851019e4d19 in util_memset32 (s=0xf00, ui=4278190335, n=64) at ../mesa-llvmpipe-9999/src/util/u_memset.h:35
#1  util_fill_rect (dst=0xf00 <error: Cannot access memory at address 0xf00>, dst@entry=0x0, format=format@entry=PIPE_FORMAT_B8G8R8A8_UNORM, dst_stride=dst_stride@entry=4096, dst_x=<optimized out>, dst_y=<optimized out>, dst_y@entry=0, width=64, 
    height=<optimized out>, uc=0x7850fa41e550) at ../mesa-llvmpipe-9999/src/gallium/auxiliary/util/u_surface.c:144
#2  0x00007851019e51ff in util_fill_box (dst=0x0, format=format@entry=PIPE_FORMAT_B8G8R8A8_UNORM, stride=4096, layer_stride=0, x=960, y=0, z=0, width=64, height=64, depth=1, uc=0x7850fa41e550)
    at ../mesa-llvmpipe-9999/src/gallium/auxiliary/util/u_surface.c:184
#3  0x0000785101a8684d in lp_rast_clear_color (task=0x2b90005951f8, arg=...) at ../mesa-llvmpipe-9999/src/gallium/drivers/llvmpipe/lp_rast.c:162
#4  0x0000785101a86244 in blit_rasterize_bin (task=0x2b90005951f8, bin=<optimized out>) at ../mesa-llvmpipe-9999/src/gallium/drivers/llvmpipe/lp_rast.c:943
#5  rasterize_bin (task=0x2b90005951f8, bin=<optimized out>, x=<optimized out>, y=<optimized out>) at ../mesa-llvmpipe-9999/src/gallium/drivers/llvmpipe/lp_rast.c:995
#6  rasterize_scene (task=task@entry=0x2b90005951f8, scene=0x2b9000670d08) at ../mesa-llvmpipe-9999/src/gallium/drivers/llvmpipe/lp_rast.c:1065
#7  0x0000785101a87cfb in thread_function (init_data=init_data@entry=0x2b90005951f8) at ../mesa-llvmpipe-9999/src/gallium/drivers/llvmpipe/lp_rast.c:1206
#8  0x000078510146ae39 in impl_thrd_routine (p=<optimized out>) at ../mesa-llvmpipe-9999/src/c11/impl/threads_posix.c:67
#9  0x0000785107f8dbec in start_thread (arg=<optimized out>) at pthread_create.c:442
#10 0x0000785108011400 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100