qemu使用 协程 发生段错误

#0 0x00005555557cf6bd in qemu_co_queue_run_restart (co=0x555556d70a50) at qemu-coroutine-lock.c:66
#1 0x00005555557d036b in coroutine_swap (from=0x5555569ae5c0, to=0x555556d70a50) at qemu-coroutine.c:95
#2 0x00005555557d04f1 in qemu_coroutine_yield () at qemu-coroutine.c:138

用bochs调试呢，有没有错误？

http://www.cnblogs.com/VincentXu/articles/3114547.html