BIND 9.4.3-P2 assertion failure

[Oleksii Krykun]

Hi,

I used BIND 9.4.3-P2 on FreeBSD 7.2-RELEASE (which is built-in) about two
years without problems.

Since last Friday sometimes I see  error messages like following:

Mar 28 16:44:06 gate2 named[60455]:
/usr/src/lib/bind/isc/../../../contrib/bind9/lib/isc/unix/socket.c:2361:
INSIST(!sock->pending_accept) failed
Mar 28 16:44:06 gate2 named[60455]: exiting (due to assertion failure)
Mar 28 16:44:06 gate2 kernel: pid 60455 (named), uid 53: exited on signal 6

What is a reason of this problem? No any system configuration changes were
made last time.

I use BIND as caching DNS server for a my LAN. Squid server only queries
this BIND.

My named.conf is:

options {
        // Relative to the chroot directory, if any
        directory       "/etc/namedb";
        pid-file        "/var/run/named/pid";
        dump-file       "/var/dump/named_dump.db";
        statistics-file "/var/stats/named.stats";
        listen-on       { 127.0.0.1; };
        forward first;
        //provider's dns
        forwarders { xx.xx.xx.xx; yy.yy.yy.yy;  };
        allow-recursion { 127.0.0.1; };
};

zone "." { type hint; file "named.root"; };

// RFC 1912
zone "localhost"        { type master; file "master/localhost-forward.db";
};
zone "127.in-addr.arpa" { type master; file "master/localhost-reverse.db";
};
zone "255.in-addr.arpa" { type master; file "master/empty.db"; };

// Private Use Networks (RFC 1918)
zone "10.in-addr.arpa"          { type master; file "master/empty.db"; };
zone "16.172.in-addr.arpa"      { type master; file "master/empty.db"; };
zone "17.172.in-addr.arpa"      { type master; file "master/empty.db"; };
zone "18.172.in-addr.arpa"      { type master; file "master/empty.db"; };
zone "19.172.in-addr.arpa"      { type master; file "master/empty.db"; };
zone "20.172.in-addr.arpa"      { type master; file "master/empty.db"; };
zone "21.172.in-addr.arpa"      { type master; file "master/empty.db"; };
zone "22.172.in-addr.arpa"      { type master; file "master/empty.db"; };
zone "23.172.in-addr.arpa"      { type master; file "master/empty.db"; };
zone "24.172.in-addr.arpa"      { type master; file "master/empty.db"; };
zone "25.172.in-addr.arpa"      { type master; file "master/empty.db"; };
zone "26.172.in-addr.arpa"      { type master; file "master/empty.db"; };
zone "27.172.in-addr.arpa"      { type master; file "master/empty.db"; };
zone "28.172.in-addr.arpa"      { type master; file "master/empty.db"; };
zone "29.172.in-addr.arpa"      { type master; file "master/empty.db"; };
zone "30.172.in-addr.arpa"      { type master; file "master/empty.db"; };
zone "31.172.in-addr.arpa"      { type master; file "master/empty.db"; };
zone "168.192.in-addr.arpa"     { type master; file "master/empty.db"; };

zone "lan.local"       {
          type forward;
          forward first;
          forwarders { 10.1.1.1; 10.1.1.2; };
};
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