fbt::exception_deliver:entry{printf("pid %d got an exception of type %d\n",pid,arg1);stack();ustack();}syscall::kill:entry{printf("pid %d called kill(%d, %d)\n",pid,arg0,arg1);ustack();}syscall::__pthread_kill:entry{printf("pid %d called pthread_kill(%p, %d)\n",pid,arg0,arg1);ustack();}