static inline int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
		struct qeth_qdio_out_buffer *buf, struct sk_buff *skb,
		struct qeth_hdr *hdr, int offset, int hd_len)
{
	struct qdio_buffer *buffer;
	int flush_cnt = 0, hdr_len, large_send = 0;

	buffer = buf->buffer;
	atomic_inc(&skb->users);
	skb_queue_tail(&buf->skb_list, skb);

	/*check first on TSO ....*/
	if (hdr->hdr.l3.id == QETH_HEADER_TYPE_TSO) {
		int element = buf->next_element_to_fill;

		hdr_len = sizeof(struct qeth_hdr_tso) +
			((struct qeth_hdr_tso *)hdr)->ext.dg_hdr_len;
		/*fill first buffer entry only with header information */
		buffer->element[element].addr = skb->data;
		buffer->element[element].length = hdr_len;
		buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
		buf->next_element_to_fill++;
		skb->data += hdr_len;
		skb->len  -= hdr_len;
		large_send = 1;
	}

	if (offset >= 0) {
		int element = buf->next_element_to_fill;
		buffer->element[element].addr = hdr;
		buffer->element[element].length = sizeof(struct qeth_hdr) +
							hd_len;
		buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
		buf->is_header[element] = 1;
		buf->next_element_to_fill++;
	}

	__qeth_fill_buffer(skb, buffer, large_send,
		(int *)&buf->next_element_to_fill, offset);

	if (!queue->do_pack) {
		QETH_CARD_TEXT(queue->card, 6, "fillbfnp");
		/* set state to PRIMED -> will be flushed */
		atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
		flush_cnt = 1;
	} else {
		QETH_CARD_TEXT(queue->card, 6, "fillbfpa");
		if (queue->card->options.performance_stats)
			queue->card->perf_stats.skbs_sent_pack++;
		if (buf->next_element_to_fill >=
				QETH_MAX_BUFFER_ELEMENTS(queue->card)) {
			/*
			 * packed buffer if full -> set state PRIMED
			 * -> will be flushed
			 */
			atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
			flush_cnt = 1;
		}
	}
	return flush_cnt;
}

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.