128 	struct cmsghdr *kcmsg, *kcmsg_base;  in cmsghdr_from_user_compat_to_kern()  local
137 	kcmsg_base = kcmsg = (struct cmsghdr *)stackbuf;  in cmsghdr_from_user_compat_to_kern()
161 		kcmsg_base = kcmsg = sock_kmalloc(sk, kcmlen, GFP_KERNEL);  in cmsghdr_from_user_compat_to_kern()
162 	if (kcmsg == NULL)  in cmsghdr_from_user_compat_to_kern()
166 	memset(kcmsg, 0, kcmlen);  in cmsghdr_from_user_compat_to_kern()
174 		if ((char *)kcmsg_base + kcmlen - (char *)kcmsg < CMSG_ALIGN(tmp))  in cmsghdr_from_user_compat_to_kern()
176 		kcmsg->cmsg_len = tmp;  in cmsghdr_from_user_compat_to_kern()
178 		if (__get_user(kcmsg->cmsg_level, &ucmsg->cmsg_level) ||  in cmsghdr_from_user_compat_to_kern()
179 		    __get_user(kcmsg->cmsg_type, &ucmsg->cmsg_type) ||  in cmsghdr_from_user_compat_to_kern()
180 		    copy_from_user(CMSG_DATA(kcmsg),  in cmsghdr_from_user_compat_to_kern()
186 		kcmsg = (struct cmsghdr *)((char *)kcmsg + tmp);  in cmsghdr_from_user_compat_to_kern()
194 	if ((char *)kcmsg - (char *)kcmsg_base != kcmlen)  in cmsghdr_from_user_compat_to_kern()