Serge Bets wrote:
> Hello Danny,
>
> On Monday, May 8, 2006 at 3:32:29 +0000, Danny Mayer wrote:
>
>> Danny Mayer wrote:
>>> Please try with -D2 and not just -d. It should print out more
>>> information. If it is what I think then you are just looping through
>>> the same thing over and over again and you never get out.
>
> Here it is with -D2, beginning just before the storm:
>
> | sendpkt(fd=22 dst=192.168.7.5, src=192.168.7.10, ttl=0, len=48)
> | transmit: at 3 192.168.7.10->192.168.7.5 mode 3
> | poll_update: at 3 192.168.7.5 flags 0601 poll 6 burst 8 last 3 next 5
> | get_full_recv_buffer() called and full_recvbufs is 1
> | receive: at 3 192.168.7.10<-192.168.7.5 flags 19 restrict 000
> | receive: at 3 192.168.7.10<-192.168.7.5 mode 4 code 1 auth 0
> | addto_syslog: peer 192.168.7.5 event 'event_reach' (0x84) status 'unreach,
> conf, 1 event, event_reach' (0x8014)
> | peer 192.168.7.5 event 'event_reach' (0x84) status 'unreach, conf, 1 event,
> event_reach' (0x8014)
> | clock_filter: n 1 off -0.009194 del 0.003643 dsp 7.939454 jit 0.000002, age > 0
> | filegen 2 3356085458 0 3356035200
> | receive: at 3 192.168.7.10<-192.168.7.5 flags 19 restrict 000
> | receive: at 3 192.168.7.10<-192.168.7.5 mode 4 code 1 auth 0
>
> And the last 2 lines are repeated thousands times per second, until ^C.
>
>
>> Also change the following line in ntpd (line 961) from:
>> while (full_recvbuffs()) to: while (full_recvbuffs() > 0)
>
> No such line in ntp-dev-4.2.1p247-RC? ntpd/ntpd.c doesn't seem to
> contain any "full_recvbuffs". Lines 961 and next are:
>
Sorry I was looking at an older version.
> | rbuf = get_full_recv_buffer();
> | while (rbuf != NULL)
>
The loop is broken. It never requests another recvbuf after the first
one. Try replacing the loop with this:
rbuf = get_full_recv_buffer();
while (rbuf != NULL)
{
/*
* Call the data procedure to handle each received
* packet.
*/
if (rbuf != NULL) /* This should always be true */
{
(rbuf->receiver)(rbuf);
freerecvbuf(rbuf);
} else {
msyslog(LOG_ERR, "receive buffer corruption -
receiver found to be
NULL - ABORTING");
abort();
}
rbuf = get_full_recv_buffer();
}
I'm not sure why it was unblocking io in the middle of this.
Danny
> I don't know if it's relevant, but a recursive grep finds
> "full_recvbufs" spelled both with one and two "f".
>
>
> Serge.
_______________________________________________
questions mailing list
[email protected]
https://lists.ntp.isc.org/mailman/listinfo/questions
