NTP broken with 2.6.14

[Jean-Christian de Rivaz]

Since I have installed the new kernel 2.6.14, ntpd is unable to
synchronize the time:

talla:~# ntpq
ntpq> pe
     remote           refid      st t when poll reach   delay   offset 
 jitter
==============================================================================
 10.0.0.1        129.132.2.21     3 u   25   64  377    0.871  -88310. 
4885.09
ntpq> as

ind assID status  conf reach auth condition  last_event cnt
===========================================================
  1 14484  9014   yes   yes  none    reject   reachable  1
ntpq> rv 14484
assID=14484 status=9014 reach, conf, 1 event, event_reach,
srcadr=10.0.0.1, srcport=123, dstadr=10.0.33.10, dstport=123, leap=00,
stratum=3, precision=-17, rootdelay=37.842, rootdispersion=59.311,
refid=129.132.2.21, reach=377, unreach=0, hmode=3, pmode=4, hpoll=6,
ppoll=6, flash=00 ok, keyid=0, ttl=0, offset=-88310.312, delay=0.871,
dispersion=2.484, jitter=4885.096,
reftime=c713bf2b.ed424e59  Wed, Nov  2 2005 23:41:47.926,
org=c713c16b.0e8ee6b8  Wed, Nov  2 2005 23:51:23.056,
rec=c713c1c6.a420b3d4  Wed, Nov  2 2005 23:52:54.641,
xmt=c713c1c6.a3c7f77a  Wed, Nov  2 2005 23:52:54.639,
filtdelay=     0.89    0.89    0.87    0.88    0.90    0.88    0.90    0.90,
filtoffset= -91583. -90207. -88310. -86973. -85104. -83843. -81507. -79682.,
filtdisp=      0.01    0.96    1.93    2.88    3.85    4.83    5.79    6.75
ntpq>

The offset alway grow without correction from ntpd. This was perfectly
working with the previouse 2.6.8 kernel used on this machine and the
10.0.0.1 router still work as others machines on the network work well
at the same time:

craie:~# ntpq -p
     remote           refid      st t when poll reach   delay   offset 
 jitter
==============================================================================
*10.0.0.1        129.132.2.21     3 u  636 1024  377    1.170    2.184 
0.369

From the /var/log/ntpstats/peerstats history, the offset start growing
exactly at the same time I rebooted with the new 2.6.14 kernel. The ntpd
is the from the Debian Sarge version "ntpd 4.2.0a@1:4.2.0a+stable-2-r
Fri Aug 26 10:30:12 UTC 2005 (1)".
--
Jean-Christian de Rivaz
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/