static void
__gr_check_mem(char *msg, char *to, unsigned long n)
{
	if (object_is_on_stack(to) && !object_is_on_stack(to + n))
		goto exploit;
	else {
		struct page *page;

		page = virt_to_head_page(to);

		if (!PageSlab(page)) {
			unsigned long max;
			char *pagestart = page_address(page);

			if ((!PageCompound(page) && ((to + n) > (pagestart + PAGE_SIZE))) ||
			    (PageCompound(page) && ((to + n) > (pagestart + (PAGE_SIZE << compound_order(page))))))
				goto exploit;
		} else if (n > ksize(to))
			goto exploit;
	}
	return;
exploit:
	{
		char err_msg[128];
		if (current->signal->curr_ip)
			snprintf(err_msg, sizeof(err_msg) - 1, "grsec: From %u.%u.%u.%u: Attempted %s by %.16s:%d, UID:%d EUID:%d",
				NIPQUAD(current->signal->curr_ip), msg, current->comm, current->pid, current_uid(), current_euid());
		else
			snprintf(err_msg, sizeof(err_msg) - 1, "grsec: Attempted %s by %.16s:%d, UID:%d EUID:%d",
				msg, current->comm, current->pid, current_uid(), current_euid());
		panic(err_msg);
	}
}

void
gr_check_mem_overflow(char *to, unsigned long n)
{
	__gr_check_mem("overflow", to, n);
}

void
gr_check_mem_leak(char *to, unsigned long n)
{
	__gr_check_mem("information leak", to, n);
}