Ok i see. My case causes SIGSEGV in various cases.
For Ex.
When to call Func in script, received signal SIGSEGV.
'run_script_main (st=0x7fffe2e7254c) at script.c'
line : enum c_op c = get_com(st->script->script_buf,&st->pos);
i guess st->bk_st's pointer has been lost when through db(in db.c *not use DBmap).
But this line is a original code. So I think the cause in what I mentioned, also it's a comprehensive reason that is not specific.
use x86?