__smb_init(int smb_command, int wct, struct cifs_tcon *tcon,
			void **request_buf, void **response_buf)
{
	*request_buf = cifs_buf_get();
	if (*request_buf == NULL) {
		/* BB should we add a retry in here if not a writepage? */
		return -ENOMEM;
	}
    /* Although the original thought was we needed the response buf for  */
    /* potential retries of smb operations it turns out we can determine */
    /* from the mid flags when the request buffer can be resent without  */
    /* having to use a second distinct buffer for the response */
	if (response_buf)
		*response_buf = *request_buf;

	header_assemble((struct smb_hdr *) *request_buf, smb_command, tcon,
			wct);

	if (tcon != NULL)
		cifs_stats_inc(&tcon->num_smbs_sent);

	return 0;
}

This weakness involves numeric computation errors, such as integer overflows, underflows, or precision losses, which can lead to miscalculations and exploitable behaviors in software.