Pgpool接続を強制切断すると

pgpool.logに下記のようなログがいっぱい出力された〜

ERROR: ・・・ read_startup_packet: incorrect packet length (-465498)
ERROR: ・・・ read_startup_packet: out of memory

これは、接続が不正に接続された場合に出力されるエラーのようで、今回は、TELNETで接続していた接続を、Ctrl+Cで強制切断したから出たみたい。

少しだけソースを調べてみると、Pgpoolの「read_startup_packet」という関数の中で、このエラーは発生しているようでした。
http://www.jonahharris.com/osdb/pgsql/pgpool2/pgpool-II-1.0.1/child.c

static StartupPacket *read_startup_packet(POOL_CONNECTION *cp)
{
	StartupPacket *sp;
	StartupPacket_v2 *sp2;
	int protov;
	int len;
	char *p;

	sp = (StartupPacket *)calloc(sizeof(*sp), 1);
	if (!sp)
	{
		pool_error("read_startup_packet: out of memory");
		return NULL;
	}

	/* read startup packet length */
	if (pool_read(cp, &len, sizeof(len)))
	{
		return NULL;
	}
	len = ntohl(len);
	len -= sizeof(len);

	if (len <= 0)
	{
		pool_error("read_startup_packet: incorrect packet length (%d)", len);
	}

	sp->startup_packet = calloc(len, 1);
	if (!sp->startup_packet)
	{
		pool_error("read_startup_packet: out of memory");
		pool_free_startup_packet(sp);
		return NULL;
	}

	/* read startup packet */
	if (pool_read(cp, sp->startup_packet, len))
	{
		pool_free_startup_packet(sp);
		return NULL;
	}

	sp->len = len;
	memcpy(&protov, sp->startup_packet, sizeof(protov));
	sp->major = ntohl(protov)>>16;
	sp->minor = ntohl(protov) & 0x0000ffff;
	p = sp->startup_packet;

	switch(sp->major)
	{
		case PROTO_MAJOR_V2: /* V2 */
			sp2 = (StartupPacket_v2 *)(sp->startup_packet);

			sp->database = calloc(SM_DATABASE+1, 1);
			if (!sp->database)
			{
				pool_error("read_startup_packet: out of memory");
				pool_free_startup_packet(sp);
				return NULL;
			}
			strncpy(sp->database, sp2->database, SM_DATABASE);

			sp->user = calloc(SM_USER+1, 1);
			if (!sp->user)
			{
				pool_error("read_startup_packet: out of memory");
				pool_free_startup_packet(sp);
				return NULL;
			}
			strncpy(sp->user, sp2->user, SM_USER);

			break;

		case PROTO_MAJOR_V3: /* V3 */
			p += sizeof(int);	/* skip protocol version info */

			while(*p)
			{
				if (!strcmp("user", p))
				{
					p += (strlen(p) + 1);
					sp->user = strdup(p);
					if (!sp->user)
					{
						pool_error("read_startup_packet: out of memory");
						pool_free_startup_packet(sp);
						return NULL;
					}
				}
				else if (!strcmp("database", p))
				{
					p += (strlen(p) + 1);
					sp->database = strdup(p);
					if (!sp->database)
					{
						pool_error("read_startup_packet: out of memory");
						pool_free_startup_packet(sp);
						return NULL;
					}
				}
				p += (strlen(p) + 1);
			}
			break;

		case 1234:		/* cancel or SSL request */
			/* set dummy database, user info */
			sp->database = calloc(1, 1);
			if (!sp->database)
			{
				pool_error("read_startup_packet: out of memory");
				pool_free_startup_packet(sp);
				return NULL;
			}
			sp->user = calloc(1, 1);
			if (!sp->user)
			{
				pool_error("read_startup_packet: out of memory");
				pool_free_startup_packet(sp);
				return NULL;
			}
			break;

		default:
			pool_error("read_startup_packet: invalid major no: %d", sp->major);
			pool_free_startup_packet(sp);
			return NULL;
	}

	pool_debug("Protocol Major: %d Minor: %d database: %s user: %s", 
			   sp->major, sp->minor, sp->database, sp->user);

	return sp;
}