GAME STARTED, ALL INIT COMPLETE

Program received signal SIGSEGV, Segmentation fault.
0xa7a9ff57 in radeon_bo_is_referenced_by_cs () from /usr/lib/libdrm_radeon.so.1
(gdb) bt
#0  0xa7a9ff57 in radeon_bo_is_referenced_by_cs ()
   from /usr/lib/libdrm_radeon.so.1
#1  0xa57f3a44 in _mesa_BufferSubDataARB () from /usr/lib/dri/r600_dri.so
#2  0x08228a08 in CVertexBuffer::UpdateChunkVertices (this=0xa59ed478, 
    chunk=0xe8d5790, data=0x84eae50)
    at ../../../source/renderer/VertexBuffer.cpp:156
#3  0x0823345f in CPatchRData::BuildBlends (this=0xd416578)
    at ../../../source/renderer/PatchRData.cpp:298
#4  0x0823425a in CPatchRData::Build (this=0xd416578, patch=0x8b743b9c)
    at ../../../source/renderer/PatchRData.cpp:645
#5  CPatchRData (this=0xd416578, patch=0x8b743b9c)
    at ../../../source/renderer/PatchRData.cpp:61
#6  0x0821fbf3 in TerrainRenderer::Submit (this=0x88cb088, patch=0x8b743b9c)
    at ../../../source/renderer/TerrainRenderer.cpp:118
#7  0x0819bbbd in CGameView::EnumerateObjects (this=0xbb9a670, frustum=..., 
    c=0x88c6164) at ../../../source/graphics/GameView.cpp:538
#8  0x081e77c6 in CRenderer::RenderScene (this=0x88c6120, scene=...)
    at ../../../source/renderer/Renderer.cpp:1663
#9  0x0819be0a in CGameView::Render (this=0xbb9a670)
    at ../../../source/graphics/GameView.cpp:470
#10 0x0815a6cb in Render () at ../../../source/ps/GameSetup/GameSetup.cpp:211
#11 0x08057513 in Frame () at ../../../source/main.cpp:380
#12 0x0805832d in RunGameOrAtlas (argc=1, argv=0xb92f17b4)
---Type <return> to continue, or q <return> to quit---
    at ../../../source/main.cpp:493
#13 main (argc=1, argv=0xb92f17b4) at ../../../source/main.cpp:512
(gdb)