DNSSec on FreeBSD 9.0-RELEASE causes CPU 100%

[George Kontostanos]

Greetings everyone,

I was testing DNSSec resolution on BIND 9.8.1-P1 by adding the
following options:

options {
...
dnssec-enable yes;
dnssec-validation auto;
...
};

Unfortunately immediately after named is restarted one CPU reaches
100% utilization.

CPU: 30.1% user,  0.0% nice, 23.6% system,  0.0% interrupt, 46.3% idle
Mem: 111M Active, 14M Inact, 255M Wired, 852K Cache, 3558M Free
Swap: 2048M Total, 2048M Free

  PID USERNAME    THR PRI NICE   SIZE    RES STATE   C   TIME   WCPU COMMAND
 2178 bind          5  20    0 51364K 13828K kqread  0   0:17 84.18% named

The system is running GENERIC kernel, and it not an authoritative DNS.
Mainly used for testing purposes. My logs don't show anything strange:

Jan  5 02:03:55 hp named[2178]: starting BIND 9.8.1-P1 -t /var/named -u bind
Jan  5 02:03:55 hp named[2178]: built with '--prefix=/usr'
'--infodir=/usr/share/info' '--mandir=/usr/share/man'
'--enable-threads' '--enable-getifaddrs' '--disable-linux-caps'
'--with-openssl=/usr' '--with-randomdev=/dev/random' '--without-idn'
'--without-libxml2'
Jan  5 02:03:55 hp named[2178]: using built-in root key for view _default
Jan  5 02:03:55 hp named[2178]: command channel listening on 127.0.0.1#953
Jan  5 02:03:55 hp named[2178]: command channel listening on ::1#953
an  5 02:03:55 hp named[2178]: running

Anybody has come across a similar behavior ?

Cheers,

-- 
George Kontostanos
Aicom telecoms ltd