cifs_get_tcon(struct cifs_ses *ses, struct smb_vol *volume_info)
{
	int rc, xid;
	struct cifs_tcon *tcon;

	tcon = cifs_find_tcon(ses, volume_info->UNC);
	if (tcon) {
		cifs_dbg(FYI, "Found match on UNC path\n");
		/* existing tcon already has a reference */
		cifs_put_smb_ses(ses);
		if (tcon->seal != volume_info->seal)
			cifs_dbg(VFS, "transport encryption setting conflicts with existing tid\n");
		return tcon;
	}

	if (!ses->server->ops->tree_connect) {
		rc = -ENOSYS;
		goto out_fail;
	}

	tcon = tconInfoAlloc();
	if (tcon == NULL) {
		rc = -ENOMEM;
		goto out_fail;
	}

	tcon->ses = ses;
	if (volume_info->password) {
		tcon->password = kstrdup(volume_info->password, GFP_KERNEL);
		if (!tcon->password) {
			rc = -ENOMEM;
			goto out_fail;
		}
	}

	/*
	 * BB Do we need to wrap session_mutex around this TCon call and Unix
	 * SetFS as we do on SessSetup and reconnect?
	 */
	xid = get_xid();
	rc = ses->server->ops->tree_connect(xid, ses, volume_info->UNC, tcon,
					    volume_info->local_nls);
	free_xid(xid);
	cifs_dbg(FYI, "Tcon rc = %d\n", rc);
	if (rc)
		goto out_fail;

	if (volume_info->nodfs) {
		tcon->Flags &= ~SMB_SHARE_IS_IN_DFS;
		cifs_dbg(FYI, "DFS disabled (%d)\n", tcon->Flags);
	}
	tcon->seal = volume_info->seal;
	/*
	 * We can have only one retry value for a connection to a share so for
	 * resources mounted more than once to the same server share the last
	 * value passed in for the retry flag is used.
	 */
	tcon->retry = volume_info->retry;
	tcon->nocase = volume_info->nocase;
	tcon->local_lease = volume_info->local_lease;
	INIT_LIST_HEAD(&tcon->pending_opens);

	spin_lock(&cifs_tcp_ses_lock);
	list_add(&tcon->tcon_list, &ses->tcon_list);
	spin_unlock(&cifs_tcp_ses_lock);

	cifs_fscache_get_super_cookie(tcon);

	return tcon;

out_fail:
	tconInfoFree(tcon);
	return ERR_PTR(rc);
}

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