Comment 3 for bug 1581805

StacktraceTop:
 _int_free (av=0x1fdc862c <main_arena>, p=<optimized out>, have_lock=0) at malloc.c:4015
 _mesa_function_pool () from /tmp/apport_sandbox_unXHo5/usr/lib/powerpc-linux-gnu/dri/r300_dri.so
 r600_set_atom_dirty (rctx=0x0, atom=0x570, dirty=true) at ../../../../../src/gallium/drivers/r600/r600_pipe.h:564
 r600_mark_atom_dirty (atom=0x570, rctx=0x0) at ../../../../../src/gallium/drivers/r600/r600_pipe.h:572
 r600_draw_vbo (ctx=0x0, dinfo=<optimized out>) at ../../../../../src/gallium/drivers/r600/r600_state_common.c:1778