Assertion debug information

David Ford david at blue-labs.org
Sat Aug 2 03:24:39 UTC 2008


01-Aug-2008 20:23:22.079 zone.c:2514: REQUIRE((((source) != ((void *)0))
&& (((const isc__magic_t *)(source))->magic == ((('Z') << 24 | ('O') <<
16 | ('N') << 8 | ('E')))))) failed
01-Aug-2008 20:23:22.080 exiting (due to assertion failure)


Suddenly today named is crashing (assert exit) frequently.  BIND
9.5.0-p1 is NOT compiled with threads.  Where is magic getting set from
and why might it not be 'ZONE' (0x5a4f4e45)?

lines leading up to the crash:


01-Aug-2008 20:23:12.867 too many timeouts resolving
'10.225.127.203.in-addr.arpa/PTR' (in '127.203.in-addr.arpa'?):
disabling EDNS
01-Aug-2008 20:23:14.393 client 127.0.0.1#53798: view internal-in:
query: 10.225.127.203.in-addr.arpa IN PTR +
01-Aug-2008 20:23:14.436 createfetch: 10.225.127.203.in-addr.arpa PTR
01-Aug-2008 20:23:14.868 too many timeouts resolving
'10.225.127.203.in-addr.arpa/PTR' (in '127.203.in-addr.arpa'?):
disabling EDNS
01-Aug-2008 20:23:18.131 client 72.34.249.230#51292: view internal-in:
query: 176.11.135.125.in-addr.arpa IN PTR +
01-Aug-2008 20:23:18.172 createfetch: 176.11.135.125.in-addr.arpa PTR
01-Aug-2008 20:23:18.869 too many timeouts resolving
'10.225.127.203.in-addr.arpa/PTR' (in '127.203.in-addr.arpa'?):
disabling EDNS
01-Aug-2008 20:23:21.600 client 217.70.177.40#32785: view external-in:
query: itys.net IN SOA -E
01-Aug-2008 20:23:22.011 client 217.70.177.40#46068: view external-in:
query: itys.net IN AXFR -
01-Aug-2008 20:23:22.079 zone.c:2514: REQUIRE((((source) != ((void *)0))
&& (((const isc__magic_t *)(source))->magic == ((('Z') << 24 | ('O') <<
16 | ('N') << 8 | ('E')))))) failed
01-Aug-2008 20:23:22.080 exiting (due to assertion failure)



It looks like it's related to a zone transfer request (which is a
legitimate and approved request).

I use DLZ/pg, and I hope the following is useful information:

  dlz "postgres zone" {
    database "postgres 2
      {host=localhost dbname=*** user=*** password=***}
      {SELECT 'TRUE' FROM canonical WHERE lower(content) =
lower('%zone%') limit 1}
      {SELECT ttl, type, priority, data FROM record, canonical WHERE
lower(content) = lower('%zone%') AND host = '%record%' AND zone = domain}
      {}
      {SELECT ttl, type, host, priority, data FROM record, canonical
WHERE zone = domain AND lower(content) = lower('%zone%')}
      {SELECT 'TRUE' FROM xfr, canonical WHERE zone = domain AND
lower(content) = lower('%zone%') AND client = inet '%client%'}";
  };


# SELECT 'TRUE' FROM canonical WHERE lower(content) = lower('itys.net')
limit 1;
 ?column?
----------
 TRUE


# SELECT host, zone, ttl, type, priority, data FROM record, canonical
WHERE lower(content) = lower('itys.net')  AND zone = domain ORDER BY
type DESC,data;
   host    | zone |  ttl  | type | priority
|                                    data
-----------+------+-------+------+----------+-----------------------------------------------------------------------------
 @         |    2 | 21600 | TXT  |          | "v=spf1 a:itys.net mx ptr
?all"
 @         |    2 | 21600 | SOA  |          | ranger.blue-labs.org.
mjharmon.gmail.com. 1217217996 21600 3600 604800 3600
 @         |    2 | 21600 | NS   |          | colt.blue-labs.org.
 @         |    2 | 21600 | NS   |          | ns6.gandi.net.
 @         |    2 | 21600 | NS   |          | ranger.blue-labs.org.
 @         |    2 | 21600 | MX   | 10       | mail.itys.net.
 localhost |    2 | 21600 | A    |          | 127.0.0.1
 lrv       |    2 | 21600 | A    |          | 127.0.0.1
 lrv-test  |    2 | 21600 | A    |          | 198.106.134.21
 ns.tunnel |    2 | 21600 | A    |          | 207.145.202.29
 nes       |    2 | 21600 | A    |          | 64.74.153.123
 www       |    2 | 21600 | A    |          | 66.214.255.78
 canon     |    2 | 21600 | A    |          | 66.214.255.78
 @         |    2 | 21600 | A    |          | 72.34.249.230
 mail      |    2 | 21600 | A    |          | 72.34.249.230
 colt      |    2 | 21600 | A    |          | 72.34.249.230
 qed       |    2 | 21600 | A    |          | 83.246.72.247
 autoid    |    2 | 21600 | A    |          | 83.246.72.247
 jabber    |    2 | 21600 | A    |          | 83.246.72.247


# SELECT 'TRUE' FROM xfr, canonical WHERE zone = domain AND
lower(content) = lower('itys.net') AND client = inet '217.70.177.40';
 ?column?
----------
 TRUE


# select * from xfr where zone=2;
 xid | zone |      client
-----+------+------------------
   1 |    2 | 217.70.177.40/32



-david


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